19 lines
882 B
Python
19 lines
882 B
Python
#!/usr/bin/env python3
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"""mk_dist.py — two-tone spacing series: 500Hz + (500+d)Hz, equal amps."""
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import wave, numpy as np
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sr=44100; T=4.0; n=int(sr*T); t=np.arange(n)/sr
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ph=np.random.default_rng(31).uniform(0,2*np.pi,4)
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for d_hz in (200,400,750,1500):
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nm='d%d'%d_hz
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A=0.4248
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y=A*np.sin(2*np.pi*500*t+ph[0])+A*np.sin(2*np.pi*(500+d_hz)*t+ph[1])
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y=np.clip(y,-0.999,0.999)
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w=wave.open('/tmp/opencode/%s_in.wav'%nm,'wb'); w.setnchannels(1); w.setsampwidth(2); w.setframerate(sr)
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w.writeframes((y*32767).astype(np.int16).tobytes()); w.close()
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import re
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src=open('/tmp/opencode/f0.rpp').read()
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src=re.sub(r'RENDER_FILE "[^"]*"','RENDER_FILE "/tmp/opencode/%s_ref.wav"'%nm,src)
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src=src.replace('FILE "/tmp/opencode/f0_in.wav"','FILE "/tmp/opencode/%s_in.wav"'%nm)
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open('/tmp/opencode/%s.rpp'%nm,'w').write(src)
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print('distance series ready')
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