https://qiita.com/MachiaWorx/items/a94504a6cce48c8ce4e7

sound2.py

import math
import numpy
import pedalboard.io

wav_hz = 44100
musictime = wav_hz * 5
root = 1/(2**(1/2))

frq1 = 1./440.
frq2 = 440. * root * root

def main():
    rawframes = []
    for t in range(musictime):
        d1 = float(math.sin(2. * math.pi * frq1 * t / wav_hz))
        d2 = float(math.sin(2. * math.pi * frq2 * t / wav_hz))
        r = 12767. * (d1 + d2 / 2.0)
        rawframes.append(r)

    devname = pedalboard.io.AudioStream.output_device_names[0]
    with pedalboard.io.AudioStream(output_device_name=devname) as stream:
        audio = numpy.array(rawframes, dtype=numpy.float32)
        stream.write(audio, wav_hz)

if __name__ == '__main__':
    main()