SCHLAPPI ENGINEERING THREE BODY Manual Download Page 23

Page: 23 / 23

Left as an exercise for the reader

(or a future edition of this manual):

Clocked LFO

Drone bank (chords, free)

Noise box

Replicate some DX7 patches

Replicate the Moog Subharmonicon

Contact Info:

If you have any questions please contact Eric Schlappi at:
[email protected]

Summary of Contents for THREE BODY

Page 1: ...THREE BODY MANUAL S C H L A P P I G N I R E E N I G N E...

Page 2: ...ion Normalization 9 Ratio Normalization 9 Patches to start exploring with 10 Unmodulated Ratios 10 Phase modulation with ratios 11 Stereo Frequency modulation 12 Theory and Usage 13 Phase Vs Frequency...

Page 3: ...nd high quality modulation effects The outputs are implemented with delta sigma modulation on the FPGA itself and are approximately 16 bit quality with 96kHz sample rate Current Draw 12V 95mA 12V 50mA...

Page 4: ...in the panel design Each oscillator has three switches to define it s state or mode as well as a collection of inputs and outputs identified by the boxes around the jack SCHLAPPI ENGINEERING THREE BO...

Page 5: ...NE DIV FM IN PHASE IN WAVEFORM OUTS OUTER OSCILLATOR VCA FREQUENCY IN PHASE IN CENTER SINE OPPOSITE SINE 10V FM INDEX VOCT RATIO SYNC COARSE MULT FINE DIV FM IN PHASE IN WAVEFORM OUTS VCA CENTER OSCIL...

Page 6: ...de the oscillator will track whatever signal is at the SYNC input FREE RATIO EXPO LIN LOW HIGH DIV MULT DESCRIPTION FREE EXPO LOW LFO with exponential frequency modulation FREE EXPO HIGH VCO with expo...

Page 7: ...ncluding those in LFO mode VOCT RATIO Volts per octave input CV adding to multiplier or divider Bipolar can be used at audio rate SYNC Hard sync Tracking input threshold at 1V tracks on rising edge IN...

Page 8: ...small LEDs across the middle are all tied to the output of the index VCA next to it This way you will see both the intensity and the rate of the modulation LABEL NAME DESCRIPTION SINE Sine wave output...

Page 9: ...rs sine for the left side and cosine for the right side The outer oscillators PHASE inputs are normalized to the opposite outer oscillators sine wave output so the left sine goes to the right phase in...

Page 10: ...or or VCA this is important and plug it into the V OCT RATIO input of the right oscillator Depending whether the range ratio mode switch is in LOW DIV or HIGH MULT this will add to either the multipli...

Page 11: ...then they will cross modulate each other resulting in high harmonic content even if you are just listening to the center oscillator If you bring up the cross modulation too high it will disintegrate...

Page 12: ...of the outer oscillators you should hear a gradual build up of harmonics Next insert a modulator like an LFO or envelope into the FM index inputs With very slow modulation on the FM index you should...

Page 13: ...ding to the output of the accumulator a triangle wave representing phase before entering the waveshaper By simply adding to the phase value you get an effect closely related to frequency modulation a...

Page 14: ...les Through Zero Effects The phase and frequency modulation in the Three Body are both implemented with signed addition or subtraction This means the waveform can reverse direction if it changes signs...

Page 15: ...en greatly amplified so that the linear FM is actually much stronger than the exponential FM In using the linear through zero FM you have the option to go so deep that the fundamental is completely ov...

Page 16: ...you are attempting a melodic patch or looking for anything other than unpredictability and chaos This is also one of the reasons that phase modulation was substituted for exponential frequency modula...

Page 17: ...an be used as one stereo pair suitable for use as a voice where modulation is being used to add harmonics and a filter is probably unnecessary The saw and cosaw outputs will also act as a stereo pair...

Page 18: ...xed with the others to create a thicker sound For more information see the Configuration Headers section of this manual Another method to create a stereo image is to use one output each from the outer...

Page 19: ...ckly changing signal The tracking only works for simple waveforms and monophonic signals Anything with more than one zero crossing per cycle or multiple tones with confuse it It also works better with...

Page 20: ...h filters down to around 3kHz high opens the filter up to around 6kHz which sounds a little better but also allows more noise from the 12 bit ADC to come through Square Phase Mod By default phase modu...

Page 21: ...the center oscillator hit LOW calibration button Move the cable into FM on the right oscillator hit LOW calibration button Plug the cable into TRANSPOSE hit LOW calibration button Move the cable into...

Page 22: ...up then start experimenting with turning up the PHASE CV and FM INDEX knobs in all modes Dubstep bass Listen to center oscillator on FREE HIGH Set left oscillator to RATIO HIGH MULT Insert sequence cl...

Page 23: ...a future edition of this manual Clocked LFO Drone bank chords free Noise box Replicate some DX7 patches Replicate the Moog Subharmonicon Contact Info If you have any questions please contact Eric Sch...