Implement saw wave and honk waveform

Changes

2 changed files (+18/-1)

• keyboard.py
  • @@ -10,7 +10,7 @@
    note = [] for i in range(0, 24): - note.append([yue.tone(yue.freq(3, i), j / bitrate) / 4 for j in range(0, 3 * bitrate)]) + note.append([yue.seething(yue.freq(4, i), j / bitrate) / 4 for j in range(0, 3 * bitrate)]) sd.default.samplerate = bitrate print("READY")
• yue.py
  • @@ -8,6 +8,13 @@ bitrate = 44100
    music = [] + def saw(x): + """ + Sawtooth wave + """ + return x / 2 / math.pi % 1 + + def freq(octave, step): """ Returns the frequency of a note
  • @@ -42,6 +49,16 @@ Y += 0.2 * math.sin(2 * w * t) * math.exp(-0.0005 * w * t)
    Y += math.copysign(Y * Y, Y) Y *= 1 + 16 * t * math.exp(-6 * t) Y *= 0.5 * min(24 * t, 1) + return Y + + + def honk(f, t): + """ + Returns the intensity of the "honk" waveform of frequency f sampled at time t + """ + w = 2 * math.pi * f + Y = sum([(saw(i * w * t) / 3 + math.sin(i * w * t)) * math.exp(-0.002 * w * t) for i in range(1, 6)]) / 2 + Y = math.copysign(abs(Y) ** (1 / 2), Y) return Y