User Manual for Scratch Match (Beta Prototype)
Contents
1. don t be discouraged if you don t get it the first few times You could also try using your hands to speed up or slow down the physical record for a split second Scratching Scratching is very much an art and there is no real rules that prevent you from exploring different kinds of sounds you can make One very popular method is the use one hand to move the vinyl back and forth and to use your other hand to tap the cross fader to mute and unmute the sound This is known as cutting Instead of the cross fader we are using the nunchuk joystick Moving the joystick to the left or right will mute the sound Try moving the record with one hand and rapidly cutting the sound with nunchuk You will get some very unique sounding noises Scratching speech over music usually makes for good results so try this Load a music heavy track onto a deck and have it play live Load a track with lots of singing or speaking on the other deck and scratch the vocals on top of the live track The Scratch indicator on top of each deck indicates which deck is connected to the hardware Fast Rewind Transition user feedback wanted to know how to do this There is a relatively easy but smooth sounding method of transition from one song to the next This technique is used a lot in hip hop music as beats from one song to the next are highly irregular What we are essentially doing is inserting a fast rewind sound in between the two songs to act as a bri2. the right of the turntable and sandwich it in place with something like a heavy book Or in our case a roll of duct tape We have not found a really good way of securing it It is also up to you if you want to hold it in mid air We find it easier and faster not to use our thumb to cut the sounds 5 Setup the haptic floor under the desk The haptic floor includes both the vibrating tiles and the amplifier which also acts as a low pass filter We amplify the bass so that you feel the beat and soften the treble so that it is not audible to the audience 6 Connect the stereo splitter into the audio out of the computer One channel is for the haptic floor one channel is for the channel splitter Moojoneg 7 Plug the computer speakers into the L channel of the splitter and headphones into the R channel 8 Turn on the computer and plug in the Bluetooth adapter How to start Scratch Match 1 Setting up Bluesoleil 2 3 a Start IVT Bluesoleil software b Click on the orange sphere to search for Bluetooth devices OS F222 RO PwN r Q c Press 1 2 on the Wiimote The blue lights should flash d Double click on the Wiimote while the lights are flashing e When the mouse icon has a square around it click it to connect f You should see a line connecting the Wiimote to the orange sphere 2 Setting up GlovePIE 0 29 a Start the GlovePIE program by double clicking the GlovePIE exe file in the folder you unzip
3. User Manual for Scratch Match Beta Prototype Introduction Welcome to the world of the disc jockey DJ The role of a DJ is to control the flow of music so that transitions between songs appear as smooth as possible In addition you are putting on a show and your creativity will get you noticed Weaving different pieces of music together can create a musical experience that is unique and greater than the sum of its parts Our program is here to allow you to play with and practice several of the essential skills required to DJ effectively Contents TA feedback Click on any of the links below to jump to a section Getting Started Beginner Techniques Installation Play A Song Hardware Setup Transition to a New Song Start Program Interface Layout Intermediate Techniques Beatmatching Scratching Fast rewind transition Advanced Techniques Mixing Advanced Scratching The elementary techniques are explained in great detail and are a great place to start where as the higher level techniques are more general You will be more familiar with the terms and layout by then and remember put your OWN creative twist on how you use the system Installation Windows Only Software needed Hardware needed Apple Quicktime full installation http www apple com quicktime download The full installation is required Max MSP Runtime free 5mb http www cycling74 com download maxmspruntime463 zip Unzip and run the insta
4. ching and they even have competitions that pit DJs against each other and are judged based on complexity and style With one hand moving the vinyl and the other hand controlling pitch bending and cutting there is a very rich collection of sounds that can be created Research into DJ Q bert one of the pioneers of scratching for creative ideas on how scratch Also check out DJ Kid Koala where on one of his songs he performs a jazz solo using just turntables
5. dge This is especially useful because the two songs do not have to be beatmatched This is how to do it 1 Have your cross fader on the side of the live track 2 Have your new track playing live with the volume up We don t hear it because the cross fader is on the opposite side 3 Select the turntable to control the deck of the live track you want to end 4 Hold your hand on top of the record and wait for the end of a musical bar 5 When the bar ends press on the record and pull back hard causing the vinyl to spin backwards You will hear the rewind sound 6 As the sound is ending use the mouse to slide the cross fader to the side of the new track Advanced Techniques TA feedback Mixing developer addition In addition to getting the beats to match in frequency and phase there is one more component that makes mixing a challenge Expert DJs also have to match bars A very common beat has 4 beats per bar and there is a repetition to each successive bar The problem is that even if the frequency and phase are matched the 1 beat of a bar might fall on the 4 beat of the bar on the other song So although all the sounds are in time the musicality of the mix is not consistent This skill can only be gained through repeated practice and counting bars in your head for both songs to see how to adjust the cue track to match the live Advanced Scratching developer addition Every DJ has their own style with scrat
6. dphones Any set of headphones or ear buds will work although we recommend DJ monitor style headphones where each cup can rotate outwards Computer speakers Any powered speakers with a 1 8 male connector will work Stereo Splitter Adapter optional 1 1 8 male stereo splitter to 2x 1 8 female stereo Provided by the SM group Haptic Floor optional Provided by the SM group Not aware of any haptic floors on the market The optional hardware is not vital to the enjoyment of DJ ing but may help facilitate faster and more natural beatmatching TA feedback How to position yourself at the system Notice the legs are on one tile each on the haptic floor the left hand is on the record player and the right hand hidden is controlling the mouse next to the laptop How to setup the Hardware 1 Setup a record player on a desk Keep it to the left if you are right handed of where you expect to sit Plug it in 2 Place vinyl with LEDs on platter Vinyl MUST be spinning for tracks to play Make sure the slipmat is between the vinyl and the platter 3 Attach a Wiimote to a shelf such that the camera is facing down towards the turntable 30cm above Tip If you leave the battery cover off there is a nice indent with which to hold the Wiimote up Our implementation was a simple computer expansion slot cover and duct tape How you attach your Wiimote is entirely up to you 4 Place the nunchuk to
7. ll script msi file with default options This program allows you to interact with but not edit Scratch Match GlovePIE 0 29 free 1 61mb http carl kenner googlepages com glovepie download Unzip anywhere in the computer This program runs a script file that converts the rotating LED lights on the record into a speed of rotation Do NOT use version 0 30 IVT Bluesoleil 2 3 trial 27mb http www bluesoleil com download index asp topic bluesoleil edr Unzip and install Being a trial it will only let you transmit 5mb of data per session which translates into about an hour Restart as necessary Scratch Match free 135mb http www cim mcgill ca alvinlaw sm docs beta SM_beta zip The zip file includes the program PIE script along with all the songs it uses Unzip everything to the same folder anywhere Audio Separation Adapter 1 1 8 male stereo splitter to 2x 1 8 female mono Provided by the SM group Computer Any WindowsXP or higher computer with a headphone out jack and a usb port will be sufficient Wiimote Nunchuk A Nintendo Wiimote and its attachment is necessary 2xAA batteries too of course Turntable slipmat Any old turntable will do Our system only uses the spinning platter so even if the needle or arm is broken it will still work The slipmat is essential for scratching Vinyl disc IR LEDs This disc is custom made from an old record IR LEDs and batteries Hea
8. ped it to b File gt gt Open choose the file SM_rotation PIE from the Scratch Match zip package c Click the Run button d Look at the values in the debug output Rotate the disc around and check that they change If they do not try restarting GlovePIE and check the Bluetooth connection It is not your fault this is happens sometimes 3 Start Scratch Match in Max MSP 4 6 Runtime a Start the Max MSP Runtime program b File gt gt Open then choose the file named SM_beta pat from the Scratch Match zip package c Maximize both windows and recenter the interface so that it looks like this You are done Now you can try to figure out how to DJ or read our short guide for some pointers Remember to start the turntable Interface Layout Map TA feedback Beraich Match Preloaded Track Menus 120 bpm slow 126 bpm medium 130 bpm fast es E A Indicates which deck the F Track position display for the turntable controls live track B Button to switch which deck G Countdown timer for the live the turntable controls track C Displays the titles of the tracks H Track position display for the and where they are playing cue track D Pitch control I Volume control for the live track E Button to recenter the pitch J Cross fader Beginner Techniques How to Start Playing a Song Using the mouse 2 Click the Load button to load the song onto whichever deck you want Le
9. t s start off with Deck A 3 Click the Cue button to play the song through the headphones If you don t hear anything check that the record is spinning If not make it spin by pressing the on button The physical record now controls the track You can fast foward or rewind by using your hand to turn the record If you press down on the record the track will pause Click the Play button to play the song through the speakers You should not hear anything at this point Move the volume slider up You along with your audience will start to hear the music How to Mix in a New Song This is very much like how to start playing a song While the live song is playing Using the mouse 1 Set the volume on deck B to zero if not already set This is so that the audience does not hear a sudden jump in of a song Songs should be first beat matched then faded in slowly De Eor Virdee Be 3 Click the Load button to load the track to deck B 4 Click the Cue button to preview the song The song will play through your headphones so use your free hand to hold one side of the headphones to your ear The physical record now controls deck B Eee Eor yreow Hey oS lt gt Soe 5 Click the Play B button to play the song through the speakers The music will stop playing through the headphones and play through the speakers Again you should hear nothing as the volume button is se
10. t to zero a EOE YAOS RoD SEN Track Menu 6 Slowly fade in the new song The beat frequencies should ideally be matched and there will be a period where both songs are overlayed on one another If it sounds good hold this mix for long If not fade out the old song quickly It s entirely up to you De Eor Wind Be 7 Slowly fade out the old song Be sure to fade out the old song before the track finishes De Eo Windom Bep a And that s all there is to it To continue mixing just repeat the above steps but switching B with A and then vice versa Happy mixing Intermediate Techniques Beatmatching developers change felt like there was information overload in the previous guide and that beatmatching is not absolutely necessary to transition from song to song After Step 5 in Mixing in a new song listening to the cue track you should be able to hear both the live track and the cue track since only one ear is listening to the headphones Judging by what you hear use the pitch shifter of deck B to either speed up or slow down the cue track It may be challenging at first but it will come with practice We want the beat frequencies to match After you find the appropriate frequency we need to adjust for phase We do this by first noting the position of the pitch that matches Then move pitch slightly higher for 1 sec and then back down again Repeat until the beats line up This skill is challenging so
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