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| import argparse | |
| import wave | |
| def crop(src_filename, dst_filename, num_frames): | |
| with wave.open(src_filename, 'rb') as src: | |
| with wave.open(dst_filename, 'wb') as dst: | |
| dst.setnchannels(src.getnchannels()) | |
| dst.setsampwidth(src.getsampwidth()) | |
| dst.setframerate(src.getframerate()) | |
| frames = src.readframes(src.getnframes()) | |
| dst.writeframes(frames[:num_frames * src.getsampwidth()]) | |
| def main(): | |
| parser = argparse.ArgumentParser() | |
| parser.add_argument('--input', required=True) | |
| parser.add_argument('--output', required=True) | |
| parser.add_argument('--num_frames', type=int, required=True) | |
| args = parser.parse_args() | |
| crop(args.input, args.output, args.num_frames) | |
| if __name__ == '__main__': | |
| main() |
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