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35
tools/pm3_pm32wav.py
Executable file
35
tools/pm3_pm32wav.py
Executable file
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#!/usr/bin/env python3
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# Simple script to convert pm3 traces to something audible
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sampleRate = 16000.0 # hertz, so we're scaling the 125kHz to 16kHz
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default_repeat = 10
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import sys
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import numpy as np
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import wave
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import struct
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with open(sys.argv[1]) as pm3:
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data = np.fromfile(pm3, dtype=int, sep="\n")
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if len(sys.argv) > 2:
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repeat = int(sys.argv[2], 10)
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else:
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repeat = default_repeat
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ofile = sys.argv[1].replace('pm3', 'wav')
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if ofile == sys.argv[1]:
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ofile = sys.argv[1]+'.wav'
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obj = wave.open(ofile,'w')
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obj.setnchannels(1) # mono
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obj.setsampwidth(2)
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obj.setframerate(sampleRate)
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factor = (2**16)//512
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for i in range(repeat):
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for d in data:
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try:
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obj.writeframesraw( struct.pack('<h', d*factor) )
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except:
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print("B:" , d, d*factor)
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raise
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obj.close()
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