keyboard script using Python sounddevice

Changes

2 changed files (+52/-1)

• keyboard.py (new)
  • @@ -0,0 +1,51 @@
    + import math + import sounddevice as sd + import os + import sys + + # Number of times to sample each second + bitrate = 44100 + + + def freq(octave, step): + """ + Returns the frequency of a note + """ + return 55 * 2 ** (octave + step / 12 - 1) + + + def tone(f, t): + """ + Returns the intensity of a tone of frequency f sampled at time t + """ + # https://dsp.stackexchange.com/questions/46598/mathematical-equation-for-the-sound-wave-that-a-piano-makes + # https://youtu.be/ogFAHvYatWs?t=254 + # return int(2**13*(1+square(t, 440*2**(math.floor(5*t)/12)))) + # Y = sum([math.sin(2 * i * math.pi * t * f) * math.exp(-0.0004 * 2 * math.pi * t * f) / 2**i for i in range(1, 4)]) + # Y += Y * Y * Y + # Y *= 1 + 16 * t * math.exp(-6 * t) + w = 2 * math.pi * f + Y = 0.6 * math.sin(w * t) * math.exp(-0.001 * w * t) + Y += 0.2 * math.sin(2 * w * t) * math.exp(-0.001 * w * t) + Y += 0.05 * math.sin(3 * w * t) * math.exp(-0.001 * w * t) + Y += Y * Y * Y + Y *= 1 + 16 * t * math.exp(-6 * t) + return Y + + + note = [] + for i in range(0, 24): + note.append([tone(freq(3, i), j / bitrate) / 4 for j in range(0, 3 * bitrate)]) + + sd.default.samplerate = bitrate + print('READY') + + while True: + os.system('stty raw -echo') + c = sys.stdin.read(1) + os.system('stty -raw echo') + + x = '`1234567890-~!@#$%^&*()_'.index(c) + print(x) + + sd.play(note[x])
• music.py
  • @@ -327,4 +327,4 @@
    # Print out music encoded in s16 to standard output for i in range(0 * bitrate, 84 * bitrate): - sys.stdout.buffer.write(struct.pack("i", at(i / bitrate))) + sys.stdout.buffer.write(struct.pack('i', at(i / bitrate)))