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mk-wav
39 lines (33 loc) · 856 Bytes
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mk-wav
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#!/usr/bin/env python
import numpy as np
from pprint import pprint
import re
import sys
import wave
line_regex = r'b([01]*) 98\Z'
match_line = re.compile(line_regex).match
def read_samples():
for line in open('b98'):
line = line.strip()
m = match_line(line)
if not m:
print(f'mystery line: {line!r}')
bin_str = m.group(1)
samp = int(bin_str, 0b10)
if samp > 32767:
samp -= 65536
yield samp
samples = np.array(list(read_samples()))
int_samples = samples.astype(np.int16)
byte_samples = int_samples.tobytes()
print(len(samples))
print(samples[:10])
print(byte_samples[:10])
wav_file_name = sys.argv[1]
wf = wave.open(wav_file_name, 'wb')
wf.setnchannels(1)
wf.setsampwidth(2)
wf.setframerate(187500)
wf.setnframes(len(samples))
wf.writeframes(byte_samples)
wf.close()