Expert Sleepers Augustus Loop v1.7.0 User Manual
Contents
1. Expert Sleepers Visit www expertsleepers co uk The central section will show your serial Augustus Loop number once you ve bought a registration Version 1 7 0 MIDI In To purchase a licence or to enter a previously purchased serial number please use the Expert F i lication This menu controls how the plug in responds Soe es OE to incoming MIDI CC messages see below Launch Licence Manager MIDI output MIDI in Channels 1 amp 2 B v MIDI output This checkbox enables or disables the output L Rounded tempos for Live of MIDI clock messages see above Legacy filter behaviour E Rounded tempos for Live Essentially this is a workaround for a limitation in Ableton Live in that Live reports rounded tempo values to hosted plug ins when externally synced by MIDI clock For ex ample if Live receives clocks at a tempo of 114 6bpm it will tell its hosted plug ins that the tempo is 115bpm Why it does this remains something of a mystery This is a problem if you are using multiple instances of Augustus Loop in a Live song with one AL set to generate MIDI clock Live synced to that clock and the other ALs set to Host Tempo mode When you use Tap Record to record your loop in the master AL the other ALs will be given a slightly wrong tempo by Live and the loops will be out of sync Turning on rounded tempo in AL solves this problem by only ever generating MIDI clock at rounded values The downside is that t2. However it has a slightly non intuitive relationship with the tap delay times In order that changing the tape direction does not produce any nasty artefacts the position of the tap tape heads has to remain constant This means that their order is reversed For example say in the simplest case you have the L L and R R taps set to 100 time and level and the other taps set to 0 level with the master delay time set to 1s In this sce nario reversing the tape gives you the same result that is a delay of 1s In a more complex example say the tap times are set to 100 75 50 and 25 When the tape is reversed the tap times become 100 125 150 and 175 Note that the dis play of the tap times values does not change only their internal interpretation Because in reverse delay times can reach 200 you should try to make sure that the maximum allocated delay time is set to at least twice the actual delay time Note that the speed at which the tape reverses is controlled by the inertia setting below Stop Stops the virtual tape som Note that the speed at which the tape stops and starts is controlled by the in ertia setting below LFO Speed Controls the speed of the pitch LFO in Hz LFO Depth 5 000 0 000 LFO Speed LFO Depth Controls the depth of the pitch LFO Filter L000 0 1008 Thru 0 200 0 00058 0 00 _ 1 000 Cutoff Q Type LFO Speed LFO Depth Cutoff Controls the filter cut off fre
3. v1 6 5 30th September 2007 e Now responds properly to AudioUnitReset so in e g Logic the delay buffer will be cleared when song playback is started etc v1 6 3 31st October 2006 e Added rounded tempos option v1 6 2 2nd July 2006 e Fixed a GUI issue with certain hosts notably Plogue Bidule on Intel v1 6 1 20th March 2006 e First Universal Binary version for Intel and PowerPC Macs v1 6 0 9th January 2006 e Added digital mode e Fixed bug which could result in orphaned threads being created v1 5 1 5th October 2005 e Added wider range of values for punch in out drop down menus v1 5 0 29th August 2005 e Added new delay intertia free mode v1 4 3 13th July 2005 e Tempo is calculated and displayed even if MIDI clock output is disabled e MIDI clock generation is completely rewritten internally and is generally more com patible with host apps e Once tap recording has been performed changing the beats beat divisor triplet con trols changes the delay time accordingly to maintain the tempo calculated at the end of tap recording v1 4 2 11th June 2005 e Fixed some potential issues with Logic s AU validation v1 4 1 13th March 2005 e Added MIDI control of delay time v1 4 0 27th February 2005 e Added clear loop function to wipe the tape e Added auto fade in out envelope with override and optional auto clear of loop on fade out completion e Current loop length now displayed in ho
4. Pan 1 0 meaning fully mono Init Pan controls the position in the stereo field of the mono signal Levels Dry Controls the amount of the input signal that is fed directly to the plug in s output The level meter to the left of the Dry knob shows the level of the signal entering the plug in The slider to the left of the meter sets the trigger level see below The small button at the bottom right of the meter increases the meter sensitivity which can be useful when setting the trigger level on signals with a low noise floor Effect Controls the amount of the effect signal that is output from the plug in The level meter to the right of the Effect knob shows the level of the signal after the filter section but before the effect level has been applied see the overview diagram Input Controls the amount of the input signal that is fed into the delay loop Loop Tap Rec When first clicked e silences the effect output e sets the pitch to 0 0 e turns off the reverse feature When clicked again sets the delay time to the interval between the two clicks and imme diately begins playback of the signal recorded in that time Hold Rec Same as Tap Rec except the delay time is set by the length of time the button is held down Tap Length amp Hold Length Similar to Tap Rec and Hold Rec except that the only effect is to change the delay time Freeze Loop Similar in effect to se
5. are used in conjunction with Tap Re cord and affect the exact time that the start and end of recording take place This can be useful when creating loops in sync with other material playing in the host application Note that most of these features rely on the host application s concept of tempo and meter Some hosts may support none or only some of these features The indicator in the centre of the group turns red when a punch in or out is pending Punch In Quantize menu When set to None tap recording starts immediately you press the Tap Rec button Oth erwise the start of recording is delayed until a time quantized by the setting of this menu E g if set to 1 4 the recording will not start until the next full beat quarter note arrives Punch Out Quantize menus When set to None tap recording ends immediately you press the Tap Rec button Oth erwise the settings have the following meaning e Length recording ends automatically once the loop has reached the length it had before you started recording e LengthQ recording ends at a time quantized such that the loop has a length that is a multiple of the value selected E g if you select a quantization of 1 Bar when you press Tap Rec to stop recording recording will continue until the loop length is a whole number of bars long e PositionQ similar to Punch In Quantize in that the time of the end of recording is quantized Please note the differ
6. Expert Sleepers Augustus Loop v1 7 0 User Manual Copyright 2008 Expert Sleepers All rights reserved This manual as well as the software described in it is furnished under licence and may be used or copied only in accordance with the terms of such licence The content of this man ual is furnished for informational use only is subject to change without notice and should not be construed as a commitment by Expert Sleepers Expert Sleepers assumes no respon sibility or liability for any errors or inaccuracies that may appear in this document Contents Introduction Installation Mac OS X Windows System Requirements Mac OS X Windows Registration Quickstart Using Augustus Loop Using the controls Knobs Sliders Dropdown menus Value edit boxes Name value display Overview Delay Time Max Delay Delay Time Min Max 10 11 12 12 12 12 12 12 12 13 14 14 14 14 14 Current delay time Delay Slider Delay Taps Delay Time Delay Level Master Pitch Pitch Pitch Slider Piano Keys Reverse Stop LFO Speed LFO Depth Filter Cutoff Q Type LFO Speed LFO Depth Saturate Saturation Shape Host Sync Host Tempo 14 14 15 15 15 15 16 16 16 16 16 17 17 17 18 18 18 18 18 18 18 18 19 19 19 Beat Divisor amp Triplet Beats Clock Out PingPong Mono ize amp Init Pan Levels Dry Effect Input Loop Tap Rec Hold Rec Tap Length amp Hold Length Freeze L
7. a normal stereo delay The left to right and right to left taps allow you create ping pong style de lays By mixing all four you can get some spacious stereo spread effects Master The last control in this group Feedback sets the overall feedback level Effectively it scales the four tap level controls Feedback 5 000 0 000 amp ee Ee 8 eee Um Cum LFO Speed LFO Depth Pitch This text field simply reflects the current pitch value You can type numbers directly in here The values represent semitones 12 semitones is an octave Pitch Slider The slider controls the speed of the virtual tape over a range of two octaves i e you can go from half speed up to double speed If you hold the Option Mac OS X Ctrl Windows key while dragging the slider it will only move to whole number values If you hold the Command Mac OS X Alt Windows key and click on the slider it will return to zero Piano Keys The many small buttons above and below the pitch slider are laid out in a black and white pattern like a piano keyboard These buttons let you set the pitch slider directly to whole semitone values The upper set of buttons just change the pitch The lower set of buttons also reverses the tape direction NB This means that if the tape is already reversed they will change the di rection to forwards Reverse Reverses the direction of the virtual tape fers Of itself this is fairly straightforward
8. ant to control the loop length 1 4 corresponds to quarter notes 1 8 to eighth notes etc The Triplet but ton turns the selected value to triplets Beats This is where you set the number of beats you want for the loop length NB this can be a non integer value e g if the beat divisor is 1 8 then setting Beats to 1 5 will give you a dotted eighth note loop length Clock Out These controls set how the plug in generates MIDI clock out NB these controls have no effect if the MIDI output has been disabled in the Prefs dia 120 00 logue Stop Start The tempo of the clock signal produced is set by the loop length and the beats settings in the host tempo section The tempo is displayed in the top left corner of this control group In this version of the plug in this functionality is tied to the Tap Record feature Essen tially the clock is started and stopped by the end and beginning respectively of the record ing However using the three drop down menus you can control exactly what MIDI mes sages are sent The Pause Clock button lets you manually stop and resume the MIDI clock once it s run ning PingPong Mono ize amp Init Pan These controls let you convert a stereo input signal into a mono one which is useful when you have the delay taps configured as a ping pong effect Mono ize controls the degree to which the 1 000 signal is converted to mono from 0 0 meaning no conversion to Mono ize _Init
9. ay time will change to the length of time between your two clicks If you use Tap Rec short for Tap Re cord the delayed material will be cleared out on the first click This is useful when starting afresh on a new loop Other than that just have a play with the controls and then dig into the detailed reference section below Using Augustus Loop Using the controls Knobs Basic use of the knobs is to click on them and drag the mouse up and down However you can obtain different results by holding keys as follows e Shift Values change more slowly as you move the mouse Command Mac OS X Alt Windows The knob assumes its default position Sliders Sliders behave similarly e Shift Values change more slowly as you move the mouse e Command The slider assumes its default position Dropdown menus Clicking on the menu displays the list of options Move the mouse over the desired option and release the mouse to select it Value edit boxes These boxes let you enter parameter values directly Clicking on the value highlights it in green you can then type the desired value using the key board Press enter to finish and accept the new value While you re typing the value the box goes red to indicate that the value you see has not yet been accepted Name value display As you move the mouse around the interface the name and current value of the control currently under the mouse is displayed in the
10. e concept genre of loop ing pay a visit to www loopers delight com The key features of Augustus Loop that make it more than just a big delay effect are e Really long maximum delay 3600 seconds that s one hour e Tap length tap record You can set the loop time while recording your first phrase e Virtual tape The delay simulates an old style tape delay meaning you can e change the tape speed i e pitch up and down e reverse the tape direction e stop the tape e smoothly change the delay time as if changing the head gap on a tape delay e Multimode filter and saturation in the feedback loop e Four feedback taps left to left left to right right to left and right to right with inde pendent delay time and feedback settings for ping pong effects stereo delays etc e Pitch and filter LFOs e Loop length can be set in terms of the host s tempo setting e Output of MIDI clock messages to synchronise other applications to the plug in e Automatic fades up and down to allow smooth transitions in your playing It can even automatically clear the loop for you once it s faded out e Host transport syne d punch in and out when recording e Inertia free mode suppresses the tape like behaviour when changing delay times to allow seamless transitions between loop lengths This is also the route to the popular multiply and divide features found on some popular looping devices Installation Mac OS X Simply co
11. ence between quantizing the time of the beginning and end of recording and quantizing the length of the recording Punch In and Out buttons These buttons allow the loop input level the Input knob to be automatically set by the beginning and end of recording The input level is set to 1 0 at the start of recording if Punch In is activated it is set to 0 0 at the end of recording if Punch Out is activated Inertia Pitch Inertia The Inertia knob controls how long the tape speed takes to react to changes in pitch including reversing and stopping the tape Low inertia settings cause the pitch to change more quickly WEL ble Inertia Inertia Fade Delay Inertia The Inertia Free button controls how Augustus Loop behaves when a delay time is changed This includes a change to the overall delay time setting or to one or more of the delay tap times When the button is turned off the behaviour is most like a tape delay in that the play heads slide along the tape to their new positions This will inevitably produce some odd sounds if the tape is not empty which may of course be exactly what you want With the button on the play heads move instantly which is not how a physical tape delay works but allows you to change the delay time without the unusual sounds In fact it is a little more complex than just described the play heads don t move instantly Rather new play heads are created at the new positions and t
12. ertia 20 Dry Level 21 Effect Level 22 Input Level 23 L L Time 24 L R Time 25 R L Time 26 R R Time 27 Filter LFO Speed 28 Filter LFO Depth 29 Pitch LFO Depth 31 Host Tempo 32 Triplet 33 Beats 34 Beat Divisor 70 R L Feedback 71 Filter Q 72 R R Feedback 73 L L Feedback 74 Filter Cutoff 75 L R Feedback 76 Pitch LFO Speed 78 Trigger Arm 79 Saturation 80 Saturation Shape NRPN messages 81 Saturation On Off 85 Filter Type 128 Delay Slider Min 86 Freeze Loop 129 Delay Slider Max 87 Tap Length 130 Master Delay Time 88 Pause Clock 131 Delay Slider 89 Tape Reverse 92 Tap Record 96 Fade In Time 97 Fade Out Time 100 Clear Loop 101 Punch In Quantize 102 Punch Out Quantize 103 Punch Out Type 104 Punch In Set Input Level 105 Punch Out Set Input Level 106 Auto Clear After Fade 107 Fade 108 Fade Override 109 Delay Inertia Mode 110 Delay Inertia Fade Time 111 Digital Mode 112 Tape Stop Version History v1 7 0 14th March 2008 e First Windows version e First Mac OS X VST version e New GUL e Fixed various filter problems In particular the filter cutoff was being limited to about 2kHz now the full range up to 8kHz is usable Therefore this version may sound different to previous versions at the same settings A preferences setting is provided to revert to the previous behaviour which may be useful if you have to re visit an old mix after upgrading e Added Tape Stop feature
13. he loop length will not be quite what you wanted but it may be good enough depending largely on your musical style and whether you record the first loop silent simply to set the tempo With this mode turned on when you use Tap Record the loop end will be slightly later than when you tap to close the loop E g if you record a loop that would have a tempo of 122 3bpm AL actually keeps recording until the loop length matches a tempo of 122bpm Legacy filter behaviour This checkbox causes the filter to revert to its behaviour in versions of the plug in before 1 7 0 see the version history MIDI control NB this section applies to the Audio Unit version only Most of Augustus Loop s controls can be controlled via MIDI There is a preference setting in the Prefs dialog that controls whether Augustus Loop re sponds to MIDI events on all channels or just on channels 1 amp 2 In the latter case the plug in responds to MIDI controller messages on channel 1 see table below and to note on messages to alter the pitch setting on channel 2 This can make it more convenient to play a soft synth and control Augustus Loop from the same keyboard Some parameters are controlled by NRPN messages rather than CC messages because they require the extra 14 bit resolution NB the Delay Slider has both a CC and NRPN assigned to it CC messages 5 Master Feedback 12 Delay Slider 14 Mono ize Input 15 Initial Pan 18 Pitch 19 Pitch In
14. he sound from these is faded in as the sounds from the old heads are faded out The duration of this crossfade is con trolled by the Inertia Fade knob set in milliseconds Digital Mode Digital Mode is activated using the button so labelled in the Misc group In this mode some of the tape simulation processing is disabled allowing for perfectly clean digital looping with no colouration degradation of the sound as it loops Even with the digital mode button pressed other settings have to be right for the mode to actually be active The indicator above the button will turn green when digital mode is in fact active These settings are as follows The pitch control must be at zero i e centred e The pitch LFO depth must be zero If delay inertia is active digital mode will also be inactive for a while around delay time changes while the delay times settle down It s worth noting that CPU load is fairly dramatically reduced in digital mode Also note that if you want a totally clean loop you should also set the filter to Thru and turn off the saturation NB setting the saturation knob to zero is not the same as turning it off by pressing the button Preferences Pressing the Prefs button brings up a dialogue where various preferences are set These global settings are shared by all instances of Augustus Loop and are not stored with presets The top section shows the product version About
15. keyboard input Augustus Loop is such a plug in Ableton have done something to address this issue in Live 7 0 2 See http www ableton com forum viewtopic php t 84434 e http www ableton com pages fag options text Basically you can enable keyboard presses in plug ins by creating or editing a file called Options txt which lives here C Documents and Settings lt username gt Application Data Ableton Live 7 0 2 Preferences The file needs to contain the line EnsureKeyMessagesForPlugins Contact The Expert Sleepers website is here http www expert sleepers co uk Or you can email info expertsleepers co uk Or you can use the forum which is here http www kvraudio com forum viewforum php f 85
16. oop Clear Loop Misc Fix Delay Trigger Arm Fade Punch In Out Punch In Quantize menu Punch Out Quantize menus Punch In and Out buttons Inertia Pitch Inertia 19 19 19 20 20 20 20 20 20 20 20 21 21 21 21 21 21 22 22 22 23 23 23 23 23 Delay Inertia Digital Mode Preferences MIDI In MIDI output Rounded tempos for Live Legacy filter behaviour MIDI control CC messages NRPN messages Version History v1 7 0 14th March 2008 v1 6 5 30th September 2007 v1 6 3 31st October 2006 v1 6 2 2nd July 2006 v1 6 1 20th March 2006 v1 6 0 9th January 2006 v1 5 1 5th October 2005 v1 5 0 29th August 2005 v1 4 3 13th July 2005 v1 4 2 11th June 2005 v1 4 1 13th March 2005 v1 4 0 27th February 2005 v1 2 0 3rd January 2005 v1 1 0 30th August 2004 23 24 25 25 25 25 26 27 27 27 28 28 28 28 28 28 28 28 28 28 29 29 29 29 29 v1 0 5th June 2004 Release Notes Issues with keyboard input Contact 30 31 31 32 Introduction O Augustus Loop l Audio TA see ss ee 8 Mono ze InitPan gt oa Sal eia Sse se ae 8 Delay Time 0 2 000 m om 1 000 Triplet Max Max Delay MIDI Clock Our ae STT Fade Uke Clock TA 1 00 Stop Stare kod bent raes 2 008 2 00 N Augustus Loop is an emulation of a tape based delay effect with some extra features to facilitate its use as a looping device If you re unfamiliar with th
17. py the plug in to the appropriate folder Library Audio Plug Ins Components for the Audio Unit version or Library Audio Plug Ins VST for the VST version Windows Simply copy the plug in to your VST plug ins folder System Requirements Mac OS X Augustus Loop requires at least Mac OS X version 10 2 8 Version 10 4 or higher is recom mended The plug ins are Universal Binaries and so will work on PowerPC or Intel Macs The Audio Unit version will work in any Audio Unit host The VST version requires a VST 2 4 compatible host Windows Augustus Loop has been developed and tested with Windows XP SP2 It may work with other versions of Windows Vista included but this is by no means guaranteed The plug in requires a VST 2 4 compatible host 1 VST is a trademark of Steinberg Media Technologies GmbH Registration The downloadable version of Augustus Loop stops working after 15 minutes every time you use it To stop this happening you need to buy a registration You can buy a registration key online using a credit card or PayPal from the Expert Sleep ers Licence Manager application See here for more information Note that on Windows you need at least version 1 0 10 of the Licence Manager The e commerce side of things is handled by eSellerate If you have any security concerns have a look at their website which is pretty informative Your registration key allows you to install Augustus Loop on up to 3 diffe
18. quency in Hz Q Controls the filter resonance Type Allows you to smoothly change between the following filter types e Thru no filtering e Low lowpass filter e Band bandpass filter e High highpass filter LFO Speed Controls the speed of the filter LFO in Hz which modulates the cutoff frequency LFO Depth Controls the depth of the filter LFO The value is a number of octaves to sweep the cutoff frequency by Saturate The button below the Saturation control where the knob s label would normally be turns the saturation effect on and off NB when this is turned off the signal in the loop can reach very high levels which may cause problems further down the line Saturation Controls the level of saturation overdrive applied to the signal before being fed into the filter Shape Controls the shape of the saturation At 1 0 the effect is that of soft saturation and clip ping At 0 0 the effect is of hard digital clipping Note that at shape settings other than 0 0 some alteration is applied to the signal even if the Saturation level is zero Host Sync The 4 controls to the right of the delay slider controls allow you to sync the delay time to the tempo of the host application NB 40 not all plug in hosts provide tempo information Host Tempo This button activates the host tempo mode Beat Divisor amp Triplet The Beat Divisor drop down menu lets you set the units in which you w
19. rectly or use the delay slider or tap buttons to set it indirectly Min This field sets the value corresponding to the leftmost position of the delay slider Max This field sets the value corresponding to the rightmost position of the delay slider Current delay time This field immediately below the delay slider shows one of the following e The current delay time in use as set by the delay slider text box e The current delay time in use as set by the host tempo settings if host tempo is ac tive e The time since tap recording began during tap recording The time is shown in seconds and in bars beats 480ths if the host application supports the concept of bars beats etc Delay Slider This slider lets you adjust the delay time between the two values set in Min and Max Delay Taps A total of nine knobs make up this section Eight of these are in pairs giving you control of delay time and feedback level for each of the four taps Delay Time Sets the delay time for the tap expressed as a percentage of the master delay time set in the delay time section L L Time L R Time R L Time R R Time Delay Level Sets the feedback level for the tap This is the same as the actual output level of the tap in our architecture 100 05 0 0K 0 0K 100 0 The four taps let you feedback sound be L L Level L R Level R L Level R R Level tween the two stereo channels The left to left and right to right taps give you
20. rent computers useful if for example you have a desktop computer in the studio and a laptop for live use You need an internet connection to activate the software though not necessarily on the computer on which you want to use it Quickstart Augustus Loop is designed to be used as an insert effect but you can use it as a send effect if you wish By default the effect produces a straightforward one second delay with fairly high feed back Play a note through it you should hear it echo once a second for quite some time The GUI consists of two sliders a number of knobs and a smaller number of buttons The shorter of the two sliders and the cluster of edit boxes around it control the delay time aS By default the slider lets you ad 0 2 000 they just the delay time between zero l 000 al ee Max Max Delay and ten seconds Try dragging the slider and see what hap pens Pitch E E EE E E ENE E ENE E E EN m 5 000 0 000 LFO Speed LFO Depth E E EN E E EN E EN E E EE The longer slider controls the speed of the virtual tape or equivalently the pitch of the de layed material Try playing some notes into the delay and then adjusting the slider You should hear the notes you played at a higher or lower pitch Four of the buttons let you set up a delay time without having to know what you want as a num ber of seconds Try clicking on Tap Length waiting a moment and then clicking on it again The del
21. s altered Trigger Arm Arms the auto record trigger In this mode the plug in will watch for an input signal and when it detects one it will effectively press Tap Rec on your behalf You can adjust the trigger level using the small slider to the left of the input level meter The small button below and to the right of the input level meter controls the sensitivity of the meter When pressed the range of the trigger level slider matches that of the meter Fade The auto fade controls allow you to smoothly and automatically fade the loop in and out effectively turn ing the Effect level control for you 00 The Fade button activates the fade operation Press to fade out press again to fade back in The Fade Override button quickly completes the fade operation in either direction The Fade In and Fade Out knobs set the corresponding fade times in seconds up to 30s The indicator to the left of the Fade button shows the current level of the fade envelope 0 0 being fully faded out 1 0 being fully faded in The menu below the indicator allows you to automatically clear the loop i e as if you pressed the Clear Loop button when the fade out is complete There are two settings plus No Clear e AutoClear simply activates loop clearing after a fade out e AutoClr2 activates loop clearing after a fade out then does an instant fade in after the loop is clear Punch In Out These controls
22. st s bar beat units as well as seconds e Added auto punch in out quantized to loop length seconds or host units or host transport position e Loop input level can be controlled by punch in out e Extensive CPU efficiency improvements e Now correctly reports silent output to downstream processing resulting in further efficiency improvements in hosts that support this feature e Fixed potential crash when using Freeze Loop and Host Tempo e Improved behaviour of Freeze Loop in conjunction with Reverse e Maximum delay time is now limited according to installed system RAM v1 2 0 3rd January 2005 e MIDI output ports now uniquely named e Added option to disable MIDI output ports e Added option for MIDI receive channel e Added display of current loop length when sync d and while using tap record e Added saturation shape control e CPU efficiency improvements v1 1 0 30th August 2004 e Added host tempo mode e Added ability to output MIDI clock messages e Added audio triggered recording e Tap tempo renamed Tap length e Fixed issue with 48kHz operation e Fixed behaviour of MIDI remote control of pitch parameter e Fixed problem with Freeze Loop button staying on after tap record e Rebuilt with Core Audio SDK 1 3 1 v1 0 5th June 2004 e First release Release Notes Issues with keyboard input There are known issues with some hosts in particular Ableton Live and all plug ins that require
23. top right of the window This area also provides tooltips for buttons 1 The Command key is also known as the Apple key the one next to the spacebar Delay Time Overview Here s a block diagram of the circuitry of Augustus Loop It can help to visualise this when understanding the effect of some settings particularly the delay time settings m Dry Effect level level Input level 7 Wu _ g Effect Saturation Master feedback Feedback ACL B levels A ry Read heads Write head Virtual Tape Delay Time The delay time controls consist of a slider and four text boxes _1 000 Max Delay Delay Time l Om 10 This field sets the maximum de i Max Delay lay time the plug in is capable of using The highest value that you can enter here is 3600 which is an hour 60 minutes times 60 seconds NB Changing this value causes the plug in to reallocate its delay buffers This can be a slow operation especially if the value entered is large So don t do it when there s actually audio flowing through the plug in as you ll most likely get an ugly stutter or momentary silence Also NB You ll want a lot of RAM to use high values for the delay time At 44 1kHz you ll need about 20MB per minute If you ask for the maximum 3600 seconds that s about 1 2GB of RAM you re asking the plug in to use Delay Time This field reflects the current delay time in seconds You can enter a value here di
24. tting the Input control to zero so no input signal is passed into the loop and setting the feedback to 100 so the loop doesn t decay In fact though the be haviour is different because the loop is completely locked down so e g the filter is not ap plied in the feedback loop While the loop is locked you can still change the pitch and the filter is applied to the loop output The audio on the virtual tape remains unchanged however until the freeze is re leased Because in this mode the same bit of recorded audio is simply being replayed you may notice slight discontinuities if you record your loop with the LFOs in operation You will also experience slight anomalies if the delay time is set to more than half the maximum allocated delay time see also reverse above Clear Loop Wipes the virtual tape Because this can be a lengthy operation especially when the max delay time is large you should not expect to press this button and immediately be able to begin recording again During the clear operation the Clear Loop button remains lit and the output level meters show a decreasing level to indicate progress Misc Fix Delay Normally when you change the pitch the delay time is changed as well E g if EA you change the pitch an octave up the delay time effectively halves If you turn on Fix Delay the delay time is changed automatically as the pitch changes so the effective delay time remains the same as the pitch i
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