Exemplo n.º 1
0
func NewWobbleKey(idx int) Key {
	osc := snd.NewOscil(sine, notes[idx], snd.NewOscil(triangle, 2, nil))
	adsr := snd.NewADSR(50*ms, 100*ms, 200*ms, 400*ms, 0.6, 0.9, osc)
	key := &WobbleKey{snd.NewInstrument(adsr), adsr}
	key.Off()
	return key
}
Exemplo n.º 2
0
func NewPianoKey(idx int) Key {
	const phasefac float64 = 0.5063999999999971

	k := &PianoKey{}

	k.freq = notes[idx]
	k.mod = snd.NewOscil(sqsine, k.freq/2, nil)
	k.osc = snd.NewOscil(sawtooth, k.freq, k.mod)
	k.phs = snd.NewOscil(square, k.freq*phasefac, nil)
	k.osc.SetPhase(k.phs)

	freql := k.freq * math.Pow(2, -10.0/1200)
	k.modl = snd.NewOscil(sqsine, freql/2, nil)
	k.oscl = snd.NewOscil(sawtooth, freql, k.modl)
	k.phsl = snd.NewOscil(square, freql*phasefac, nil)
	k.oscl.SetPhase(k.phsl)

	freqr := k.freq * math.Pow(2, 10.0/1200)
	k.modr = snd.NewOscil(sqsine, freqr/2, nil)
	k.oscr = snd.NewOscil(sawtooth, freqr, k.modr)
	k.phsr = snd.NewOscil(square, freqr*phasefac, nil)
	k.oscr.SetPhase(k.phsr)

	oscmix := snd.NewMixer(k.osc, k.oscl, k.oscr)

	k.reldur = 1050 * ms
	k.dur = 280*ms + k.reldur
	k.adsr0 = snd.NewADSR(30*ms, 50*ms, 200*ms, k.reldur, 0.4, 1, oscmix)
	k.adsr1 = snd.NewADSR(1*ms, 278*ms, 1*ms, k.reldur, 0.4, 1, oscmix)
	adsrmix := snd.NewMixer(k.adsr0, k.adsr1)

	k.gain = snd.NewGain(snd.Decibel(-10).Amp(), adsrmix)

	k.Instrument = snd.NewInstrument(k.gain)
	k.Off()

	return k
}
Exemplo n.º 3
0
func NewBeatsKey(idx int) Key {
	osc := snd.NewOscil(sawsine, notes[idx], snd.NewOscil(triangle, 4, nil))
	dmp := snd.NewDamp(bpm.Dur(), osc)
	d := snd.BPM(float64(bpm) * 1.25).Dur()
	dmp1 := snd.NewDamp(d, osc)
	drv := snd.NewDrive(d, osc)
	mix := snd.NewMixer(dmp, dmp1, drv)

	frz := snd.NewFreeze(bpm.Dur()*4, mix)

	adsr := snd.NewADSR(250*ms, 500*ms, 300*ms, 400*ms, 0.85, 1.0, frz)
	key := &BeatsKey{snd.NewInstrument(adsr), adsr}
	key.Off()
	return key
}