PurePitch v 2.7
Contents
1. vis _ fo Rati Ao oc Ng 400 ee 44 Ratio 400 EIS a i 5 gt 3 i I Mes A 2 L E gt ray S 3 SE S Ei i E 6 200 1 200 EN I i i I Pro d i Original i 100 109 100 200 400 800 0 0 2 0 4 0 6 0 8 1 0 Input Frequency Hertz Time Modulation Control Panel Modulation Waveshape Rate Pitch Formant non 3 20 Hz 600 cent The modulation controls are used to add periodic variation to the pitch shift amount formant shift amount or the output level This is useful to create vibrato tremolo chorus effects or other more wild modulations Waveshape The Waveshape control determines the shape of the modulation signal With the mouse clickon the button with the waveshape graphic until it shows the modulation shape that you want The available shapes are To add vibrato the sine waveshape is usually the best choice triangle Do eea a sawtooth pseudo random sample hold since it gives a very smooth pitch modulation The square wave can be used to create trill effects The sample hold waveform creates a stepped random function similar to using a sample hold with a noise generator on an analog synth This is useful for random shift amounts to create realistic doubling effects The pseudo random shape is a bit different from the others At very slow modulation rates it is useful for creating a natural sounding random detune At higher rates it will distort the vocal signal cr2. 8 1 0 Input Frequency Hertz Time In example 3 the expression ratio is set to 1 1 This example shows how negative values for ratio will invert the pitch inflection Every time the pitch goes up in the original signal the pitch will go down in the processed output This is easily seen in the pitch inflection graph below where the processed signal s pitch is a mirror image of the pitch of the original signal Example 3 Expression Curve Ratio 1 1 0 Expression Example Ratio 1 1 0 800 800 E 400 Ta Ratio E B i 2 E x 3 S Rotation Frequency ip estate ee ee eg 3 3 i 3200 i 171 0 Ratio i E i Processeds _ 27 Original i 10 10 Poo 200 400 800 8 0 0 2 0 4 0 6 0 8 1 0 Input Frequency Hertz Time 17 Example 4 illustrates the effect of changing the rotation frequency In this example the ratio is 1 0 5 which is the same value as in the first example The rotation frequency here is set to 500 Hertz Because the pitch of the input signal is always below 500 Hertz the pitch of the processed signal is always shifted up towards the rotation frequency If the ratio setting had been greater than 1 0 the pitch would have been shifted down away from the rotation frequency Example 4 Expression Curve Ratio 1 0 5 Expression Example Ratio 1 0 5 800 800 a Bilis Sa cal A IFOTRTOIIETERUOR ON Ae basal lr al Rotation Frequency mre i AL
3. This mode should also be used with non vocal source material or material that doesn t shift well with the Formant Preserving mode The Formant Preserving mode will maintain the original character of the source vocal for larger shift amounts than Conventional mode However this algorithm is a bit more fragile and may have difficulty shifting certain types of material Typically very rough or raspy vocal sounds are more difficult to shift with this algorithm and may on occasion produce some objectionable artifacts Mixer Control Panel Ep n REE shirt perau 57 0 d Feedback Zool Mix The Mix slider controls the rdative amounts of the dry unpro cessed signal with the wet pitch shifted output A setting of 100 percent will producea pure pitch shifted output A seting of 0 will yield a totally dry signal Dry Delay The Dry Delay parameter adjusts the amount of delay applied to the unprocessed signal before mixing with the pitch shifted signal By having separate parameters for wet and dry delay the relative timing of the original signal and the pitch shifted signal can be completely controlled Shift Delay The Shift Delay parameter adjusts the amount of delay applied to the pitch shifted signal before mixing with the dry signal The Shift Dey also affects the amount of delay in the feedback loop Feedback The Feedback slider controls how much pitch shifted delayed signal gets fed back into the
4. the level to a lesser degree Tweak Control Panel Min Freq The Min Freq parameter is used to optimize the quality of the pitch processing This parameter should beset to beless than the lowest frequency in the audio track that is being processed Usually it is best to set this parameter no lower than is necessary for optimum quality For most vocal tracks a setting of 50 Hertz usually works quite well For high pitched vocals you may want to try increasing this setting and for extremely low pitch vocals or for other instruments you may need to decreasethis setting Max Freq The Max Freq parameter works together with the Min Freq param amp er to optimizethe pitch processing quality This parameter should be set to beat least as high as the highest frequency in the audio track being processed A setting of 1000 Hertz works well for most vocal tracks For higher pitched sounds this may need to be increased For audio tracks that are difficult to process this should be set to the smallest value possible Highpass The Highpass parameter controls a highpass filter that is built in to the pitch processing algorithm This filter removes undesirable DC and very low frequency signals that may degradethe perfor mance of the pitch shifter While the setting of this parameter is not extreney critical it may improve the pitch shift quality for some difficult tracks Pitch Slew The Pitch Slew parameter acts as a portamento control
5. tremolo adjust the Level control The Rate control will affect the vibrato and tremolo speed Octave Doubler Octave doubling usinga slight detune on the octave to make a more pleasing and realistic harmony Greate on vocals Octave Tremolo Slap A simple slap delay with an octave up pitch shift Perfect Intervals Above Parallel intervals in perfect tune Use the pitch keys to select the interval For shifting down see the next preset Perfect Intervals Below Parallel intervals but with a tweak in the formant to make the shifted output more natural for down shifting Use the pitch keys to select the interval Stretched Intervals Above To fix the flat effect of perfectly tuned intervals this preset adds a fewcents of pitch bend to make the intervals more pleasant and realistic Use the pitch keys to select a harmony interval Stretched Intervals Below Like above except that the formant is tweaked for more realistic downward pitch shifting Spacey Presets Altered States An interesting octave modulated reverberant sound created with Square wave modulation on level and pitch with lots of delay and feedback Ascension Ascending formants on tremolo echo trails Cool Cyberia Sounds like your computer s starting to get an attitude MicroTuned Echoes Sweet long echoes with random microtuning Nice on vocals or instruments Space Monkeys Beautiful spacey modulated echoes up an octave This one is re
6. vocal track When you play the track you ll notice that the harmony output is always at the same note by default the root note of that key To perform a harmony simply click on the pitch keyboard or use the keyboard shortcuts just like playing a piano keyboard To record the harmony sequence click on the automation but ton for PurePitch and enable automation for Pitch Keys and any other parameter you may wish to automate possibly Pitch Bend and Formant Shift Bring up the Pro Tools automation enable window and make sure plug in is enabled for automation In the track you re working on select auto write to enable automation data to be written Now when you press play and create harmonies with the pitch keys the data will be recorded by Pro Tools When the transport is stopped the automation will automati cally switch to auto touch which is a convenient way to add new notes or edit the harmony line on the fly To edit the harmony line graphically select Pitch Keys in the Pro Tools waveform selection pop up menu for this track A graph of the harmony notes will appear on top of the audio waveform display Use the mouse to edit the harmony note values locations and to add new pitch transitions The screenshot below shows an example of this To make the result sound more natural the default Harmonist preset adds some vibrato to the synthetic harmony To control the amount of vibrato adjust the Pitch amount in t
7. Getting Started Intro PurePitch is the original high quality pitch processing plug in for Pro Tools TDM systems It is designed to detune or transpose vocal or instrumental tracks over a wide pitch range and still maintain the original natural sound The PurePitch plug in is a versatile tool that can be used to create a wide variety of harmony and detuning effects It can create virtual backing vocals creating new harmony lines from a single lead vocal track With independent control over pitch and formants PurePitch can create truly realistic vocal doubling mutate vocal character and gender or create other worldly crea tures With the built in delay LFO and flexible parameter mod ulation PurePitch can add vibrato tremolo or create extreme sonic modulations For dialogue processing the unique expression controller can be used to enhance reduce eliminate or invert the pitch inflections of vocal dialogue tracks or to create instant robotic effects PurePitch is completely real time which means you don t have to take a coffee break while the computer is chewing on your audio track Move the parameter knobs and hear the effect instantly System Requirements PurePitch is a software plug in for the Digidesign TDM environ ment To use PurePitch you must have a Digidesign Pro Tools system version 5 0 or later equipped with TDM running on a Macintosh computer with OS 9 1 or later Each PurePitch processor
8. User Guide PurePitch TDM Version 2 7 Extreme Vocal Processing for Pro Tools Created by Ken Bogdanowicz Robert Bristow Johnson and Bob Belcher License Agreement By purchasing this package you are hereby granted the right to use this copy of this software subject to the following restrictions You may not copy or distribute any copies of this software or documentation with the exception of copies made for back up purposes We still retain all rights to this software meaning that by purchasing this soft ware you can use it but we still own the code algorithms designs copyrights patents and anything e se related to this software You agree not to reverse engineer this product You understand that this softw are may not be free of bugs or errors We ve done our best to make sure that the software is bug free but sometimes bugs happen We are not liable for any damage caused by this softw are whether it s trashed files or trashed recording sessions We don t expect this to happen but you can t be too careful Back up your data regularly IN ANY CASE OUR LIABILITY IS LIMITED TO THE AMOUNT THAT YOU PAID FOR THIS SOFTWARE That said we want you to be happy with this software If you have a problem with this product tel us and we will try to correct the problem If we can t correct the problem and you choose to retum the product we will refund your money without giving you a hassle This manual and PurePitch sof
9. ally nice Trem olo Vibrato Presets Ambient Tremo Vibe A nice big vibrato with ambience Adjust the tremolo by tweaking the level mod amount Adjust the vibrato with the pitch mod Geat on guitar Delayed Tremo Vibe A straight delay with tremolo and vibrato Delayed Tremolo Tremolo and delay Use the level mod control to control the intensity and the modulation rate to control the speed Delayed Vibrato Vibrato and delay Use the pitch mod control to control the intensity and the modulation rate to control the speed Tremolo Just tremolo Use the level mod control to control the intensity and the modulation rate to control the speed Vibrato Just vibrato Use the pitch mod control to control the intensity and the modulation rate to control the speed Vocal Transforms Presets Diva This preset can turn your singer into an operatic soprano without the ego Estrogen A combination of pitch and formant shifting capable of turning the most macho man into a certifiable wimp Play with the pitch and formant knobs to suit your taste Useful for turning men into women Munchkinizer How to create that old chipmunk sound without changing the pitch Twiddle the formant slider to tweak this to your needs Little Tyke A preset that turns adults into children Testosterone Put your singer on steroids without the side effects Great for creating a basso profundo or turning women into men Tinkerbell For those r
10. are occasions when you need a fairy godmother Works best on female vocals Wacky Presets Add Our impression of a bad trip Not that we d know Bad Connection A bad telephone connection in the days before digital phone lines EMI Aliens Sort of like that movie classic villain Darth something Military Radio The sound of highly compressed battle field communications Not Enough Coffee A really bad Monday morning Small Furry Animals Another classic of a sort Here to remind you what your old pitch shifter sounded like Tone Deaf This turns the best trained vocalists into tin ears Too Much Coffee Starting to get that shaky feeling Chapter 5 Common Problems Questi ons How do get finer resolution on parameter adjustments Mac Hold down the key while dragging the parameter slider WinNT Hold down the Ctrl key while dragging the parameter slider How do return to the default value for a parameter con trol Mac Hold down the option key and dick on the parameter con trol WinNT Hold down the Alt key and click on the parameter control The pitch shifted output sounds chopped up or glitchy First make sure that you are only trying to process a monophonic or single instrument sound Also make sure that the track is as dry as possible which means making sure that any reverb or other effects areinserted after PurePitch Try changing the shift mode to the Conventional pitch shifting mod
11. ase the output frequency will always be at the rotation frequency As the ratio is gradually increased the pitch inflection will increase but will remain cen tered around the rotation frequency assuming the input frequency is approximately centered around the rotation frequency In general the result will be most natural when the rotation frequency is set to the pitch center average p the original signal This is accomplished by clicking on the copy button between the current frequency readout and the rotation frequency control This causes the current average pitch value to be copied into the rotation frequency control Each time a new dialogue track is processed the rotation frequency should be re adjusted This is easily ae ng the new track through PurePitch and clicking on the copys button during a typical dialogue section Shift Limit The Limit control is used to control the maximum amount of pitch shift that is applied by the expression controller Usually it s desirable to keep the amount of pitch shift applied to a dialogue track limited to a small amount so that the final result will be as Hint Make sure to set the Rotation Frequency when altering the expression of a dialogue track Hint Use the Current Frequency readout as a guide in adjusting the Min Freq and Max Freq controls for hard to shift audio tracks If the Current Frequency readout varies too rapidly to read try looping the seg
12. default value Hold down Alt then click the parameter control with the mouse Automation With Pro Tools 4 0 or later parameter adjustments to PurePitch may be automated For basic information about how to use automation refer to your Pro Tools user guide Virtually all parameters on the control panel of PurePitch are available for automation To enable a parameter for automation click on the automation button at the top of the PurePitch control panel The Plug In Automation window will appear At the left is a list of parameters available for automation On the right is the list of parameters currently enabled for automation To enable a parameter for automation select one or more of the parameters in the list at the left and click on the Add button The parameter will appear on the list at the right enabled for automation To begin recording automation data bring up the Pro Tools automation enable Plug In Automation Pitch Interval Pitch Bend Add gt gt Formant Shift Shift Mode Mix Remove Shift Delay E Dru Delay Feedback Bupass Mute Expression Ratio m Rotate Frequency None Mod Waveshape PitchDoctor dore i amp PurePitch Pitch Mod Formant Mod Level Mod J None Min Freq Max Freq Pitch Slew Inserts 5 None window and make sure plug in is enabled for automation In the track you re working on select auto write to enable automation data to be wri
13. downward pitch shifting set the Formant Shift slider to somewhere between 100 and 300 cents Hint When mixing the wet and dry signals you may hear some unnatural phase can cellation To eliminate this set the Dry Delay and the Shift Delay to slightly different set tings creating a more realistic mix Even more extreme formant shifts can be used to recreate the familiar animated chipmunk sounds or evil alien humanoid voices Positive amounts of formant shift will make the source sound more female then more childlike and ultimately like a chipmunk A negative formant shift acts like digital testosterone yielding deeper more masculine sounds PurePitch can shift the pitch using one of two different pitch shifting algorithms depending on the setting in the Shift Mode Control panel The two algorithms are provided because each has different strengths and weaknesses The Conventional mode is in general the cleanest of the two algorithms but will give rise to the chipmunk effect for large amounts of pitch shift This effect is caused by a warping of the formant structure of vocal sounds For an explanation of formants see the above Formant Shift control description Conventional pitch shifting should be used when you are making small modifications in pitch roughly plus or minus 50 or 100 cents At larger shift amounts vocals may start to suffer from the chipmunk effect with this mode
14. e E 20 Tweak Control Panel 21 Min Freg ER EE E TTE TET TOT TEES 21 Max FrOQ esses iua tides cee REGUM KG ER EY ka KR E ee Y S 21 A PD zl PICO SIS Los ebr re SERO isis rior date ETAT Ad AE REA EA S 22 Stat s Panel A yi siR a PE rE nE EKE DEER RR 22 MUTE ek decane bicis dera 22 iilo e P TT 22 qi o T rer 22 E IIo PR CPC 23 Keyboard Shortcuts ce 2ievis tara RRRR RED E RES 24 A C IE TC EDT E 28 Chapter 3 Doing Real Stuff With PurePitch Fixing Out Of Tune Vocal and Instrumental Tracks 30 Creating Realistic Harmonies isses 30 Re Scoring Vocal and Instrumental TrackS 31 Chapter 4 PurePitch Preset Patches CHORUS POSS cusa curb carac ERE e ses ew E RETI 33 Dialogue Presets cele ope Eb eA T shaw eh ciertos EE 34 A prnii enee nn nipi kia ni Eai 35 Spacey Presets lauu 37 Tremolo Vibrato Presets isses e 37 Vocal Transforms Presets isses eh 38 Wacky Presta scsocrosbiedass mininci sii ikiii paid 39 Chapter 5 Common Problems Questions How Do Get Finer Resolution on Parameter Adjustments cece cece eee eee eens 40 How Do Return to the Default Value for a Parameter Control cece cece cece ee eee ees 40 The Pitch Shifted Output Sounds Chopped Up or Gitchy 40 Pro Tools Says that the DSPs are Maxed out When Trying to Insert PurePitCh 0 0 cc cece eee eee 40 Chapter 6 Technical Support cee eee 41 Chapter 1
15. e Finally in PurePitch adjust the Min Frequency and Max Frequency parameters see the description of these parameters in the Using PurePitch section Pro Tools says that the DSPs are maxed out when trying to insert PurePitch You ve run out of DSPs on your DSP farm card You must either remove some other DSP plug ins from your current session or add more DSP power by purchasing another DSP farm card from Digidesign Chapter 6 Technical Support Wave Mechanics offers free technical support for all registered users We love to hear from our users but if you are having problems first try to look in the manual for an answer Also check our web site for technical notes and product updates If you are still stumped please e mail us with the following info keep in mind that we won t be able to help you with questions about Pro Tools Apple Windows hardware or software or any other non Wave M echanics stuff The product version and serial number The version number of your Pro Tools system and type of hardware e g HD Mix classic PC or NuBus Your computer type and operating system version number e g System 9 1 etc A detailed description of the problem The e mail address for support is Support wavemechanics com If you don t have access to e mail please fax the same info to fax 802 951 9799 If you don t have e mail or a fax you can call us at phone 802 951 9700 Finally if yo
16. eating a rough noise like effect on the processed sound Rate The Rate control adjusts the speed of the pitch modulation effect in Hertz A setting of 1 Hertz means that the pitch formant or leve will be modulated once per second Adjust this to your taste Pitch Mod The Pitch Mod control adjusts how much the pitch shift amount is modulated To add vibrato to the signal set this in the range of about 50 to 100 cents with a sine wave modulation shape and a rateof 1 to 10 Hertz A more extreme setting of 1200 cents would modulate the pitch shift amount over a range of plus or minus oneoctave Formant Mod The Formant Mod control is used to add modulation to the for mants of the input signal Seethe Formant control for a descrip tion of formants and formant shifting Formant modulation will sound something like a swept filter or wah wah applied to the input signal The formant modulation control is in cents like the formant slider A setting of 1200 cents means that the formant will be modulated over a rangeof plus or minus one octave Level Mod The Level Mod control is used to add level modulation or tremolo to the processed signal This can be used to create more realistic harmonies by adding a slight tremolo to the harmony output or can beused to create radical pulsating effects The adjustment is in percent where a setting of 100 percent will modulate the amplitude from fully off to fully on and lower setings will modulate
17. ent to you to permanently authorize your plug ins Be sure to carefully remove the small license card 15mm x 25mm from the larger plastic card f you have an older pre USB Mac then the challenge and response codes are the appropriate means of authorization To obtain the challenge code while starting up Pro Tools or the authorizer application the challenge code will be displayed The challenge code can be copied and sent to Wave Mechanics by email support wavemechanics com if your purchase is already registered with Wave M echanics or along with your registration Be sure to include the product name and serial number as listed on your product registration card along with the challenge code A response that permanently authorizes your plug ins will be promptly returned f you have an iLok and the iLok license card for the plug ins you wish to authorize simply start up Pro Tools or the autho rizer application for that product Displayed is a window with two button options Authorize or Quit Click on the Authorize button to authorize Confirm that Use license card is checked and click on Next If the license card is not inserted into the iLok you will be prompted to insert a valid license card for the plug in purchased then click on Next and your plug in is authorized If the installation completed successfully PurePitch should now appear in the inserts dialog box next time you start Pro Tools The installation should ha
18. formation Clickon the Continue button In the installer dialog box select either the UltraTools product non authorized plug ins will run in demo mode or use the Custom Install option and select the PurePitch product and any other plug ins you wish to install In the installer dialog box select the drive on which to install PurePitch Select the same drive on which Pro Tools is installed In the installer dialogue box click on the Install button When authorizing any or all of the component plug ins of the UltraTools bundle the iLok USB key is used the older key disks are no longer used for authorization All Digidesign HD and current Mix and OOL systems ship with the iLok key If you have purchased an upgrade to UltraTools or any of its component plug ins a license card is included in the package and you can proceed to authorize your component plug ins If you purchased UltraTools or any of its component plug ins for the first time you must contact Wave Mechanics to register your product and receive the authorization appropriate to your platform Any of the plug ins can run fully functionally for 30 days until your authorization is completed f you have a Mac with the USB the iLok is the means of authorization If your Digidesign system does not already have an iLok key one can be purchase from Wave Mechanics at a nominal cost When you register your purchase with Wave Mechanics an iLok license card will be promptly s
19. he upper half of the keyboard on the control panel with the octave up button engaged Control option shift and 1 2 3 4 5 6 7 8 or qwnt y will imitate the lower half of the keyboard on the control panel with the octave down button engaged control and T 4 gt or nudge the pitch bend and formant values in 10 cent incremerts The cortrol T key combination moves the pitch bend value up and control moves it down The control combination moves the formant value up and control moves the formant down control option and T 4 gt or move the pitch bend and formant values in 1 cert incremerts control shift and T J gt or move the pitch bend and formant values in 100 cert 1 semitone increments The 3 key is used to get finer resolution of all parameter slider adjustments Hold the 38 key and then drag the control slider with the mouse The option key is used to return a parameter control to its default value Hold option and then click the parameter control with the mouse Keyboard Shortcuts Windows NT In combination with the control option and shift keys the top two rows of the keyboard have been arranged to function like the pitch keyboard on the main screen of PurePitch octave shift down shift up octave min 7th min 7th maj 2nd maj 2nd unison maj 7th maj 7th To shift up or down press one of the above keys this will function just like the keyboard on the P
20. he modulation min 6th control panel To set the vibrato rate simply adjust the modula tion Rate To add a bit of tremolo set the Level amount in the modulation control panel Re Scoring Vocal and Instrumental Tracks Because PurePitch is quite good at shifting the pitch by large amounts it is possible to actually edit the original melody line of a vocal or instrumental track Start out using the default setting of PurePitch the setting that comes up when the PurePitch plug in is inserted To set up automation for pitch correction click on the automa tion button for PurePitch and enable automation for the Pitch Bend parameter Bring up the Pro Tools automation enable window and make sure plug in is enabled for automation n the track you re working on select auto write or auto touch to enable automation data to be written 31 n Pro Tools locate and select the note that you want to adjust It is helpful to set Pro Tools to Loop Playback Loop the selected section and use the Pitch Keys to transpose the highlighted segment to the note you d like a Once you ve adjusted the pitch store this setting as automation data using Write Automation The transition to the new note can be smoothed by using the Pitch Slew parameter in the Tweaks control panel If Pitch Slew is set to O the pitch transition will be instantaneous which can be a bit unnatural The purpose of the Pitch Slew parameter is
21. ics section It should appear as below About Box Mixer Control Panel Click the Wave M echanics Controls Wet Dry Mix Feedback logo to display program version and Delay hardware key serial number credits and other info Shift Mode Control Panel Selects the type of algorithm used for pitch alteration Shift Mode ventional Fi Formant Preserving Expression E o Cur Freq Rot Freq Lii gt Expression Control Panel EXE lt gt 200Hz 3 00 octi Controls for altering the pitch y inflections of dialogue tracks e Modulation SS Rate BHO we Modulation Control Panel m EE CEST Wr Wir Applies periodic modulations AN to pitch formant or level of S8va t8va Min Freq Max the input signal Formant Pitch Bend sou 600 hz MT 25 0 ms Ez DUI min 7th mint lt dimsth ming min2ad majad majsed dista octav k Tweak Control Panel Fine tunes the operation of the PurePitch processor Pitch Control Panel Status Panel Controls for altering the pitch Displays the state of the and formant of the signal mute and bypass switches being processed the pitch shift quality and the hardware key The About Box accessed by clicking on the Wave Mechanics logo is used to display the program version credits and other info create Ken Bogdanowicz Robert Bris ohnson and Bob Belcher PurePitch release 2 5 2 Release Version Number Block Diagram Below i
22. input Non zero settings here will create regenerative digital delay effects and interesting pitch SW eeps Hint For the best pitch shift quality a minimum amount of delay is necessary If the delay is too small for optimal shifting the quality LED will turn yellow or red Hint Use fairly large amounts of Shift Delay when trying to create regenerative pitch effects Try using only formant shifting with a lot of delay and a fair amount of feedback with no pitch shift to create some interesting sounds Expression Control Panel Expression Ratio Cur Freq Rot Freq Limit 13 00 BRE copys 200 He 3 00 oct The expression processor built into PurePitch is designed to manipulate the pitch inflections of dialogue tracks The expression processor compresses or expands the pitch envelope of the voice similar to what a dynamics processor does to the level of a sig nal By compressing the pitch envelope the pitch inflections are reduced creating a more monotone dialogue track By expanding the pitch envelope the pitch inflections are enhanced creating a more expressive dialogue track Expression Ratio The Expression Ratio control is similar to the ratio control on a traditional compressor The setting of this parameter indicates how much the output pitch changes for each unit of input pitch variation A Ratio setting of 1 1 means that the output pitch changes one unit for every unit the input pi
23. ment of audio that may contain the minimum or maximum frequency that you are trying to measure natural sounding as possible Limit places a hard limit on the amount of pitch shift For example if Limit is set to 200 cents the pitch of the dialogue track will not be altered by more than two semitones in either direction Expression Examples The following graphs illustrate how the expression processor modifies the pitch inflections In example 1 below the expression ratio is set to 1 0 5 which will compress any pitch inflections in signal to be processed The first graph shows how the output or processed pitch will vary as the input pitch varies The input pitch is indicated along the horizontal axis and the output pitch is indicated along the vertical axis The diagonal lines in the plot indicate what the output pitch will be for any given input pitch The solid diagonal line represents a 1 1 expression ratio and is included for reference The dotted line shows what happens for an expression ratio of 1 0 5 The graph to the right shows how the pitch inflection of a typical signal is modified The solid line shows a plot of the pitch variation of the original signal and the dashed line shows the pitch variation after processing In this example the pitch variation is compressed resulting in half as much variation on the output as on the input Pitches above the rotation point are shifted down while pitches below the rotation poi
24. nt are shifted up The pitch at the rotation frequency is not modified at all Example 1 Expression Curve Ratio 1 2 0 Expression Example Ratio 1 2 0 800 7 800 12 1 2 0 Ratio 7 y 2 x B s 7 A dod Y T H y i s i m _ e a Ratio 409 irse N 4 8 E j g I 3 S Output Frequency Hertz 8 S D a m 2 equency Hertz 3 S i i i i i i i i i i i i i i i i i i i i i ae Em cd p e ig g iB A S 9 gt 3 2 im ig i 100 109 00 200 400 800 1 0 0 2 0 4 0 6 0 8 1 0 Input Frequency Hertz Time In example 2 on the following page the ratio is set to 1 2 0 which will result in an expansion of any pitch inflections In this example the pitch inflection in the processed signal is expanded resulting in twice as much pitch variation as in the original signal Pitches above the rotation frequency are increased and pitches below are decreased As in the previous example the pitch at the rotation frequency is not modified Example 2 Expression Curve Ratio 1 0 5 Expression Example Ratio 1 0 5 800 800 Gi hag cce e 400 seas ER 3 S 57 105 Ratio Rotation Frequency 9 7 Output Frequency Hertz 3 3 A Frequency Hertz 3 8 i Hi CREE i d m vo CE ig T is 5 E E E Processed Original 109 109 00 200 400 800 0 0 2 0 4 0 6 0
25. on monophonic audio tracks only If you try to run a mix through it you might not get what you expect Keyboard Shortcuts Macintosh In combination with the control option and shift keys the top two rows of the keyboard have been arranged to function like the pitch keyboard on the main screen of PurePitch unison maj 2nd maj 3rd 4th 5th maj 6th maj 7th octave min 7th min 6th dim 5th min 3rd min 2nd To shift up hold down the control key and press one of the above keys this will function just like the upper half of the keyboard on the PurePitch control panel To shift the pitch down hold down control and option and press the above keys this is like the lower half of the keyboard on the control panel Holding the shift key while doing any of the above will shift the pitch an additional octave up or down like the octave keys on the control panel Here s a Summary of all keyboard shortcuts for PurePitch control b bypasses the PurePitch processor When bypass is engaged the bypass LED will be illuminated control m mutes the output of the PurePitch processor When mute is engaged the mute LED will be illuminated control and 1 2 3 4 5 6 7 8 or q w rty will imitate the upper half of the keyboard onthe control panel control option and 1 2 3 4 5 6 7 8 or qwrt y will imitate the lower half of the keyboard on the control panel control shift and 1 2 3 4 5 6 7 8 or qw rt y will imitate t
26. on the pitch shift amount When composing harmonies using PurePitch it is often useful for the pitch to smoothly glide between the various intervals being programmed Usethis to control how fast the pitch will glide from one seting to the next Status Panel Mute m E A The status pane indicates the state of Mute Bypass pitch shift Quality Mute When thered Mute LED is illuminated the output of the PurePitch processor is muted Muteis toggled with a keyboard shortcut Mac control M Win M or through a DAE aware application that supports the mute function Bypass When the red Bypass LED is illuminated PurePitch is in the bypass state meaning that it simply passes the audio signal without modifying it in any way Bypass is toggled with a keyboard shortcut Mac control B Win B or by pressing the bypass button abovethe PurePitch control pand Quality The Quality LED turns yellow or red when the Shift Delay control has been set too low A ydlow indicator indicates that PurePitch is possibly producing less than optimum pitch shift quality A red indicator indicates severe quality degradation and that the dday should be increased to obtain cleaner pitch shifting Caveats No pitch shifter is perfect If you ve had experience with other pitch processors you probably know this already PurePitch is quite good but occasionally you ll find a track that causes PurePitch to glitch our technical term fo
27. r a pitch shifting artifact that you d rather not hear If this is the case first try to adjust the Min Freq and Max Freq parameters Also experiment with the Shift Mode control using the pitch shifting mode which gives the best results Also check our web site to make sure you have the latest version of PurePitch We are constantly working on improving our algorithms and occasionally we will release new improved versions of PurePitch If everything you try fails send us a DAT of the offending track and we ll try to come up with settings that work We can t promise you anything but we ll try Use PurePitch on dry tracks only Reverberation and other effects will degrade the pitch shift quality If you want reverb or other effects on your pitch shifted track add the processing after PurePitch Use a bit of delay PurePitch needs a bit of time to analyze the audio before it processes it This is accomplished with the Pitch Delay parameter If you set this parameter to zero you will notice a slight degradation of the pitch shift quality For the best pitch shifting quality leave this parameter at its default setting or greater If this small amount of delay throws off the feel of your mix you can always bounce the processed track and slide it ahead in time to compensate for the delay Possibly future ver sions of Pro Tools will automatically compensate for the process ing delay of DSP plug ins PurePitch is designed to work
28. rePitch is the ability to shift the pitch of vocals without affecting the formant structure Formants are what gives each vocal sound and each person a unique character A formant is simply a resonance a narrow peak in the frequency spectrum similar to the peak created by a parametric equalizer with a narrow bandwidth and high gain Each vocal sound has several of these resonances all at different frequencies with dif ferent bandwidths These formant characteristics are also different from person to person Many pitch processors distort the location of these resonances yielding the familiar chipmunk effect when shifting pitch by more than a hundred cents or so While it s usually desirable to preserve the formant structure when changing the pitch the Formant Shift slider gives you the ability to warp the formant structure independent of the amount of pitch change Small amounts of formant shift can be used to create more realistic harmonies or double tracking by subtly altering the character of the original voice More extreme changes in the formant can be used to deepen voices or to perform digital gender changes without the need to visit your plastic surgeon Hint To get finer adjust ment of the Pitch Bend amount or any other parameter hold down the dor Grl key while dragging the slider To return to the default O cents value option click or Alt click on the slider Hint To get more realistic sounding
29. s a simplified block diagram showing the signal flow through the PurePitch processor FEEDBACK FORMANT SHIFTER EXPRESSION PROCESSOR Legend Summing Junction 2 signals added together gt Adjustable Gain Block MIX Pitch Control Panel Pitch Keys Pitch Bend Slider Formant Shift Slider Formant Pitch Bend ro ei Pitch Keys Click on one of the Pitch Keys to select a musical interval for pitch shifting The Pitch Keys together with the Pitch Bend slider function similar to a MIDI keyboard If you would like to detune the pitch from one of the diatonic intervals to get an in betw een note you can add some additional pitch shift with the Pitch Bend slider The pitch keys are laid out like a sideways piano keyboard with the unison key corresponding to middle C For easier harmony generation there are also quick keyboard accelerators that mirror the function of clicking on these keys with the mouse See the Keyboard Shortcuts section o shift the pitch by more than 1 octave click on the or 48 ya buttons Pitch Bend The Pitch Bend slider adds an additional pitch shift to the interval programmed by the Pitch Keys The Pitch Bend slider alters the amount of pitch shift by a given number of cents There are 1200 cents per octave and 100 cents equals 1 semitone For double tracking or detuning use Pitch Bend amounts in the range of 47 5to 15 cents Formant Shift A powerful feature of Pu
30. s preset uses the expression processor to create a monotone voice and then adds extreme pitch and formant shifting to make it sound even more synthetic Useful for special effects or animation voices Harmony Presets Deep Octave This preset illustrates how formant shifting can be used to make large downward pitch shifts sound more natural This patch is useful for harmony doubling of vocal tracks Deeper and Longer Like above with a long delay and a deeper sound This could be used to create a male accompaniment to a female vocal track Harmonist A Ab Bh B C Cf Use one these presets to compose synthetic harmonies using the pitch keys as a piano keyboard The unison key becomes the root note of the key that you re working in and the output will be at whatever pitch you play on the keyboard For Harmonist C the unison key will shift the audio to middle C By playing the keyboard you can compose completely new harmony lines See the keyboard shortcuts to use the keyboard to control the pitch To adjust the tuning use the rotation pitch control to set the frequency for middle C By automating the pitch control you can compose completely arbitrary melodies using any vocal track as source material This preset adds a bit of tremolo and vibrato to the source to make the synthetic harmonies more realistic To adjust the depth of the vibrato adjust the Pitch control in the modulation control panel To adjust the depth of the
31. tch changes or in other words the pitch inflection is unchanged Asetting of 1 0 0 5 means that the output pitch will move half as much as the input pitch moves compressing the pitch inflections resulting in a more monotone dialogue track Asetting of 1 0 2 0 means that the output pitch will change twice as much as the input pitch expanding the pitch inflections creating a more expressive vocal Asetting of 1 0 0 0 will completely eliminate pitch inflections which is an easy way to create a monotone classic robot sound The pitch inflection can even be inverted by setting Ratio to a negative value In general small amounts of expression variation will give the most natural results A Ratio setting of 1 0 1 1 will slightly enhance vocal tracks without adding unnatural artifacts Current Frequency Display The Current Frequency display is a continuously updating readout of the pitch of the input to the PurePitch processor It is used in setting the Rotation Frequency below Rotation Frequency The Rotation Frequency control is used together with the expres sion ratio in altering pitch inflections of dialogue tracks When the pitch inflection is compressed the pitch envelope will be compressed inward towards the rotation frequency During expansion the pitch envelope will be expanded outward away from the rotation frequency This is easier to picture when the expression ratio is set to 1 0 0 yielding a monotone output In this c
32. ter created by modulating the formants with a slow triangle sweep Miarotune Chorus A classic pitch shifter effect created by simply detuning by 12 cents and mixing with unprocessed signal Useful for thickening just about anything Random Microtune A more realistic chorus effect created by randomly detuning the signal Useful for thickening just about anything Unison A subtle but realistic doubling effect created with small amounts of formant and pitch modulation Dialogue Presets Less Expression This preset will slightly reduce the pitch inflections of a dialogue track Make sure to set the rotation frequency according to your source vocal so that the pitch will not be altered at the speaker s average speaking pitch To exaggerate the effect reduce the ratio Monotone This preset will completely eliminate pitch inflection in a dialogue track Make sure to set the rotation frequency according to your source vocal so that the pitch will not be altered at the speaker s average speaking pitch This is an easy way to create a robot sound More Expression This preset will slightly exaggerate the pitch inflections of a dialogue track Make sure to set the rotation frequency according to your source vocal so that the pitch will not be altered at the speaker s average speaking pitch This is useful for enhancing a voice over to add a bit more impact or excitement Robotic An intentionally synthetic sounding vocal effect Thi
33. to smooth out these unnatural sounding pitch transitions Set Pitch Slew so that the transition sounds good to you The default set ting of 25 milliseconds usually works well for most applications Chapter 4 PurePitch Preset Patches The presets for the PurePitch processor are organized into fold ers according to how we expect you might use them The folders are Chorus Dialogue Hamony Spacey Trem olo Vibrato Vocal Transfoms Wacky Chorus Presets Ambient Chorus Chorus and thickening effects for solo vocal and instrument tracks Dialogue inflection manipulation using the expression processor Musical harmony effects for solo vocal and instrument tracks Spacey long delay effects typically with lots of feedback Tremolo and vibrato effects created using level and pitch modulation Effects for manipulating the character of spoken word and musical vocals This is what you get when you ve been star ing at a computer screen and listening to the same vocal track for months Random microtuning and some delay regeneration are used to create an ambient chorus effect Useful for thickening vocal or instrumental tracks Doubler A not so subtle doubling effect created with formant shifting and a fair amount of delay Double Tracker A fairly tight double track effect created by using a small amount of formant shifting Useful for vocals Formant Phasor A unique twist on the classic phase shif
34. tten for that track Now when you press play and manipulate the parameters within PurePitch the data will be recorded by Pro Tools When the transport is stopped the automa tion will automatically switch to auto touch The next time you press play the parameter changes you recorded will be played back along with the audio With auto touch enabled as long as the mouse is clicked new parameter changes will be written over the previous automation data The most obvious use for automating the parameters of PurePitch is to re harmonize a vocal track For information on how to do this see the next section Chapter 3 Doing Real Stuff with PurePitch Fixing Out Of Tune Vocal and Instrumental Tracks To correct out of tune performances use the PitchDoctor plug in which is specifically designed for this task Creating Realistic Harmonies With the current version of PurePitch an easy way to create a harmony track is to arrange it using one of the Harmonist presets combined with the pitch keyboard on the control panel or the pitch keyboard shortcuts This gives you ultimate control over the harmony line like playing a musical instrument Using the automation feature of Pro Tools 4 0 the harmony line that you create can be stored and edited just like a MIDI sequencer track First insert PurePitch on the vocal track that you want to use as your source Next select the Harmonist preset that is in the same key as the
35. tw are Gropyright 1998 2002 W ave Mechanics Inc Wave Mechanics the Wave Mechanics logo and PurePitch are trademarks of Wave Mechanics Inc Pro Tools is a registered trademark of Digidesign Inc W ave Mechanics Inc PO Box 528 Burlington VT 05401 www wavemechanics com e mail support wavemechanics com fax 802 951 9799 phone 802 951 9700 Contents Chapter 1 Getting Started lj reaa EE E een yaaa a caste panes ece4 1 System Requirements asasan nananana 2 Istat ome erg Ed E ces ee ee E IE 2 Chapter 2 Using PurePitch TM opo T ee ee eee are bi re ee rere Teer eee 6 zb ART v P O 9 Pitch Coritrol Panels is es linvesius ides bx RR RR REY RE REDE 10 PIC KEYS acaso tuus dus some ues ma Vom a det 10 Ateh BODIE sarai eR EXER cerrar ia NUES S ULREER eevee cat 11 Formant Shift oi RE RIRERPERRE ERE RR TA 11 Shift Mode Control Panel cocivossionsci narrada a 12 Mixer Control Pales see ax eic ue RE EP AREbEeExd b NAAR bee 13 A rer I3 Dy Delays PCI L 13 Shift Dela Im 13 Feedba Karoseri erae O 13 Expression Control Panel aaa a 14 Expression Ratio mn 14 Current Frequency Dsplay cece eee eee 15 E 15 SHG LMM PCT 15 Expression Bamples os crocoiar rr rnm rh EXER ERE 16 rci DP Se Wie es be eedSeenuy es key 19 Rates siani C21 era ich tee DV Edda nV ERN ERE Ads NE Ed 20 PU reo TT 20 Formant MOG isere ch th repro vao ri EG GR Ra r red 20 RS o ceive ssn ch stewie ead a NAN EEEE oge
36. u are completely un wired you can write to us at Wave M echanics Inc P O Box 528 Burlington VT 05401 Notes
37. urePitch control panel Holding the shift key while pressing any of the above keys will shift the pitch an additional octave up or down like the octave keys on the control panel Here s a Summary of all keyboard shortcuts for PurePitch B bypasses the PurePitch processor When bypass is engaged the bypass LED will be illuminated M mutes the output of the PurePitch processor When mute is engaged the mute LED will be illuminated The keys 1 2 3 4 5 6 7 8 9 0 1 and qw ert yu o p will imi tate the keyboard onthe control panel Shift and 89 0 2 and uj o pL will imitate the upper half of the keyboard on the control panel with the octave up button engaged Shift and1 2 3 4 5 6 and qwerty will imitate the lower half of the keyboard on the control panel with the octave down button engaged P 1 5 or nudge the pitch bend and formant values in 10 cent increments The T key moves the pitch bend value up and moves it down The gt key moves the formant value up and lt moves the formant down Alt and T 4 gt or move the pitch bend and formant values in 1 cent increments Shift and 1 2 or move the pitch bend and formant values in 100 cent 1 semitone increments The Gr key is used to get finer resolution of all parameter slider adjustments Hold the Ctrl key and then drag the control slider with the mouse The Alt key is used to return a parameter control to its
38. uses one DSP chip on the DSP farm card Your current setup must have at least one free DSP of sufficient memory resource This manual assumes that you are familiar with the Digidesign Pro Tools TDM environment If you are uncertain about how DSP plug ins work within the TDM environment please read the Digidesign documentation and spend some time getting comfortable with the basic TDM system and the DSP plug ins that come with it before using this package Installation PurePitch software comes on a UltraTools CD ROM and uses an iLok USB hardware key device for software authorization The UltraTools CD ROM contains software for every current Wave Mechanics Pro Tools TDM plug in in the UltraTools family The PurePitch plug in that is authorized by the iLok will run without restriction whereas other Wave M echanics plug ins not autho rized will run in Demo Mode for a limited period of time Install PurePitch Macintosh Exit from Pro Tools and any other applications that use the Digidesign DAE Insert the WaveMechanics Plug ins CD ROM into your com puter and double click the WaveMechanics installer applica tion Gickon the Continue button with the mouse when the initial splash screen appears Read the license agreement If you agree to these terms click the Accept button If you don t agree click Decline and the installation will be terminated Read the Read Me file for last minute updates and important in
39. ve installed the following on your computer AWaveMechanics folder located in the drive or folder you specified during installation containing a readme file and the user manual Acopy of the PurePitch plug in located in your TDM Plug Ins or Plug Ins folder located within your DAE Folder which is located in your System Folder The PurePitch settings files located in your Plug In Settings folder located within your DAEfolder which is located in your System Folder If you are upgrading the previous version of PurePitch will be moved to the Removed Items folder within the Wave Mechanics folder Please take a moment to fill out the enclosed registration card Chapter 2 Using PurePitch Basics Within Pro Tools to process a track with PurePitch click on the Inserts button for that track and select PurePitch from the pop up menu Sams a rec sr In 2 solo mute MA PitchDoctor mono o PurePitch mono WE E Each time this is done a new PurePitch processor is created You may create as many PurePitch processors as you want until you run out of DSP resources each processor uses one of the four DSPs available on the DSP farm card To access the control panel for PurePitch within Pro Tools click on the PurePitch insert button in either the Edit window or the Mix window Using PurePitch The control panel for PurePitch is accessed as described previously in the bas
Download Pdf Manuals
Related Search