genish.js
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JavaScript
/* garden of earthly delays
* original gen~ patch by Gregory Taylor
* https://cycling74.com/2011/11/07/gen-tutorial-1-the-garden-of-earthly-delays/
*
* adapted to genish.js by thecharlie 5/2/2016
* after executing code, use GUI (will appear top right) to control feedback network
*/
// passing string to data loads resource via xmlhttprequest.
// run rest of script once the audiofile has loaded
audiofile = data( './resources/audiofiles/dead-presidents.wav' ).then( ()=> {
'use jsdsp'
// 'ssd', or single-sample delay, is pseudonym for gen~ history, since history
// is a default property of the window object in the browser...
feedback1 = ssd()
feedback2 = ssd()
feedback3 = ssd()
feedback4 = ssd()
damp = param( 'damping', .5 )
damp2 = param( 'damping2', .5 )
damp3 = param( 'damping3', .5 )
delayTime= param( 'delayTime', 556 )
gateCtrl = param( 'feedbackRouter', 0 )
// read through audiofile sample by sample
in1 = peek(
audiofile, // data
accum( 1,0,{ max:audiofile.buffer.length } ), // indexing
{ interp:'none', mode:'samples' } // attributes
)
gate1 = gate( gateCtrl, feedback1.out, { count:4 } )
gate2 = gate( gateCtrl, feedback2.out, { count:4 } )
gate3 = gate( gateCtrl, feedback3.out, { count:4 } )
gate4 = gate( gateCtrl, feedback4.out, { count:4 } )
delay1In = in1 + gate1.outputs[0] + gate2.outputs[1] + gate3.outputs[2] + gate4.outputs[3]
delay2In = in1 + gate1.outputs[1] + gate2.outputs[0] + gate3.outputs[3] + gate4.outputs[2]
delay3In = in1 + gate1.outputs[2] + gate2.outputs[3] + gate3.outputs[0] + gate4.outputs[1]
delay4In = in1 + gate1.outputs[3] + gate2.outputs[2] + gate3.outputs[1] + gate4.outputs[0]
// inlets and feedbacks feed our delays
delay1 = delay( delay1In, delayTime, { size: 44100 })
delay2 = delay( delay2In, delayTime / 2, { size: 44100 })
delay3 = delay( delay3In, delayTime / 3, { size: 44100 })
delay4 = delay( delay4In, delayTime / 4, { size: 44100 })
// delays are folded
foldedDelay1 = fold( delay1, -1,1 )
foldedDelay2 = fold( delay2, -1,1 )
foldedDelay3 = fold( delay3, -1,1 )
foldedDelay4 = fold( delay4, -1,1 )
// damp feedback with folded delays
feedbackMix1 = mix( foldedDelay1, feedback1.out, damp )
feedbackMix2 = mix( foldedDelay2, feedback2.out, damp )
feedbackMix3 = mix( foldedDelay3, feedback3.out, damp2 )
feedbackMix4 = mix( foldedDelay4, feedback4.out, damp2 )
// record output of mix ugens for use in next sample
feedback1.in( feedbackMix1 ); feedback2.in( feedbackMix2 );
feedback3.in( feedbackMix3 ); feedback4.in( feedbackMix4 );
ssdLeft = ssd()
ssdRight = ssd()
left = mix( .5 * (feedbackMix1 + feedbackMix3), ssdLeft.out, damp3 )
right = mix( .5 * (feedbackMix2 + feedbackMix4), ssdRight.out, damp3 )
// record left and right output to use in next sample
ssdLeft.in( left )
ssdRight.in( right )
// limit output to {-1,1}
limitL = clamp( left, -1,1 )
limitR = clamp( right, -1,1 )
// play stereo out & print callback to console for potential debugging
cb = play( [ limitL, limitR ], true )
gui = new dat.GUI({ width:400 })
gui.add( cb, 'damping', 0, 1 )
gui.add( cb, 'damping2', 0, 1 )
gui.add( cb, 'damping3', 0, 1 )
gui.add( cb, 'delayTime', 64, 4096 )
gui.add( cb, 'feedbackRouter', 0,3 ).step(1)
})