72 lines
2.7 KiB
Python
Executable File
72 lines
2.7 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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Tool for comparing two wav samples
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"""
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import sys
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import argparse
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import numpy as np
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from coqui_stt_training.util.audio import AUDIO_TYPE_NP, mean_dbfs
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from coqui_stt_training.util.sample_collections import load_sample
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def fail(message):
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print(message, file=sys.stderr, flush=True)
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sys.exit(1)
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def compare_samples():
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sample1 = load_sample(CLI_ARGS.sample1).unpack()
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sample2 = load_sample(CLI_ARGS.sample2).unpack()
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if sample1.audio_format != sample2.audio_format:
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fail('Samples differ on: audio-format ({} and {})'.format(sample1.audio_format, sample2.audio_format))
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if abs(sample1.duration - sample2.duration) > 0.001:
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fail('Samples differ on: duration ({} and {})'.format(sample1.duration, sample2.duration))
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sample1.change_audio_type(AUDIO_TYPE_NP)
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sample2.change_audio_type(AUDIO_TYPE_NP)
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samples = [sample1, sample2]
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largest = np.argmax([sample1.audio.shape[0], sample2.audio.shape[0]])
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smallest = (largest + 1) % 2
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samples[largest].audio = samples[largest].audio[:len(samples[smallest].audio)]
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audio_diff = samples[largest].audio - samples[smallest].audio
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diff_dbfs = mean_dbfs(audio_diff)
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differ_msg = 'Samples differ on: sample data ({:0.2f} dB difference) '.format(diff_dbfs)
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equal_msg = 'Samples are considered equal ({:0.2f} dB difference)'.format(diff_dbfs)
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if CLI_ARGS.if_differ:
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if diff_dbfs <= CLI_ARGS.threshold:
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fail(equal_msg)
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if not CLI_ARGS.no_success_output:
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print(differ_msg, file=sys.stderr, flush=True)
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else:
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if diff_dbfs > CLI_ARGS.threshold:
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fail(differ_msg)
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if not CLI_ARGS.no_success_output:
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print(equal_msg, file=sys.stderr, flush=True)
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def handle_args():
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parser = argparse.ArgumentParser(
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description="Tool for checking similarity of two samples"
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)
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parser.add_argument("sample1", help="Filename of sample 1 to compare")
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parser.add_argument("sample2", help="Filename of sample 2 to compare")
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parser.add_argument("--threshold", type=float, default=-60.0,
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help="dB of sample deltas above which they are considered different")
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parser.add_argument(
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"--if-differ",
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action="store_true",
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help="If to succeed and return status code 0 on different signals and fail on equal ones (inverse check)."
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"This will still fail on different formats or durations.",
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)
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parser.add_argument(
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"--no-success-output",
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action="store_true",
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help="Stay silent on success (if samples are equal of - with --if-differ - samples are not equal)",
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)
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return parser.parse_args()
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if __name__ == "__main__":
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CLI_ARGS = handle_args()
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compare_samples()
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