Devin Dominguez devin-dominguez

## m8_shortcuts.md

      
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    Dirtywave M8 Shortcuts

Extracted from the resources page at dirtywave.com.
Global Key Shortcuts


[DIRECTION] Move the cursor on the screen.
[SHIFT]+[DIRECTION] Navigate between Views
[EDIT] Start editing a value; also functions as a “YES” or “ENTER”


## mid-side processing
// stereo to mid-side
M = (L + R) / 2
S = (L - R) / 2

// mid-side to stereo
L = (M + S)
R = (M - S)

## polyblep_waveforms
// phase in range 0 <= phase < 1
// pwm in range -1 <= pwm <= 1

dt = frequency / samplerate

saw(phase, dt) {
  return phase * 2 - 1 - polyBlep(phase, dt)
}

pulse(phase, dt, pwm = 0) {

## fdn_reverb
Feedback Delay Network for Reverb

A = (a + b) + (c + d) + L
B = (a - b) + (c - d) + R
C = (a + b) - (c + d)
D = (a - b) - (c - d)

Max feedback should be 0.5 at the very most to avoid nastiness.

Each delay line should have a delay time that is not correlated to any other delay line's time.

## cppan
sqrt(2) / 2 = 0.7071067811865476
p in range of -PI/2 to PI/2, or -0.125 to 0.125 when normalized
A = (sqrt(2) / 2) * (cos(p) - sin(p))
B = (sqrt(2) / 2) * (cos(p) + sin(p))

## ez_pd_osc
phasor -> variable angle unipolar triangle function -> * 0.5 -> cosine lookup
adjust the angle on the triangle to morph between sine and pseudo-saw
can offset saw phase and subtract to get a psuedo-square (as per ususal)

triangle function:
  angle range 0 to 1 with 0.5 being symetrical
  if (phase <= angle) phase / angle
  if (phase > angle) phase - 1 / angle -1

by scaling by 0.5 we get the first half of the cosine, and then that same first half but in reverse (which is == to the 2nd half)

## euclidean_rhythm
(((stepNumber + offset) * numberOfHits) % cycleLength) < numberOfHits
true for hits, false for rests

## overtone_intervals
24TET	CENTS	RATIO	DEC
-------------------------------
0.0	0	1/1	1.0

0.5	0.5327	33/32	1.03125

1.0	1.0496	17/16	1.0625

1.5	1.5514	35/32	1.09375
	// stereo to mid-side
	M = (L + R) / 2
	S = (L - R) / 2

	// mid-side to stereo
	L = (M + S)
	R = (M - S)
	// phase in range 0 <= phase < 1
	// pwm in range -1 <= pwm <= 1

	dt = frequency / samplerate

	saw(phase, dt) {
	return phase * 2 - 1 - polyBlep(phase, dt)
	}

	pulse(phase, dt, pwm = 0) {
	Feedback Delay Network for Reverb

	A = (a + b) + (c + d) + L
	B = (a - b) + (c - d) + R
	C = (a + b) - (c + d)
	D = (a - b) - (c - d)

	Max feedback should be 0.5 at the very most to avoid nastiness.

	Each delay line should have a delay time that is not correlated to any other delay line's time.
	sqrt(2) / 2 = 0.7071067811865476
	p in range of -PI/2 to PI/2, or -0.125 to 0.125 when normalized
	A = (sqrt(2) / 2) * (cos(p) - sin(p))
	B = (sqrt(2) / 2) * (cos(p) + sin(p))
	phasor -> variable angle unipolar triangle function -> * 0.5 -> cosine lookup
	adjust the angle on the triangle to morph between sine and pseudo-saw
	can offset saw phase and subtract to get a psuedo-square (as per ususal)

	triangle function:
	angle range 0 to 1 with 0.5 being symetrical
	if (phase <= angle) phase / angle
	if (phase > angle) phase - 1 / angle -1

	by scaling by 0.5 we get the first half of the cosine, and then that same first half but in reverse (which is == to the 2nd half)
	(((stepNumber + offset) * numberOfHits) % cycleLength) < numberOfHits
	true for hits, false for rests
	24TET CENTS RATIO DEC
	-------------------------------
	0.0 0 1/1 1.0

	0.5 0.5327 33/32 1.03125

	1.0 1.0496 17/16 1.0625

	1.5 1.5514 35/32 1.09375