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@@ -1,6 +1,29 @@
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+import typing
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+
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import scipy.io.wavfile
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+def trim_where(
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+ # https://docs.python.org/3.8/library/collections.abc.html#collections-abstract-base-classes
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+ sequence: typing.Sequence,
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+ condition: typing.Sequence[bool],
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+) -> typing.Sequence:
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+ start = 0
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+ for item_condition in condition:
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+ if item_condition:
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+ start += 1
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+ else:
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+ break
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+ stop = len(sequence)
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+ assert stop == len(condition)
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+ for item_condition in condition[::-1]:
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+ if item_condition:
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+ stop -= 1
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+ else:
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+ break
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+ return sequence[start:stop]
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+
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+
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def wavfile_read_mono(path):
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# https://docs.scipy.org/doc/scipy/reference/generated/scipy.io.wavfile.read.html
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rate, data = scipy.io.wavfile.read(path)
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