static CloseableItIt<short[]> decodeWAVToMonoSamples_iterator(File wavFile, int windowSize) {
  ret decodeWAVToMonoSamples_iterator(wavFile, 4096);
}

static CloseableItIt<short[]> decodeWAVToMonoSamples_iterator(File wavFile, int windowSize) ctex {
  WAVDecoder decoder = new(newFileInputStream(wavFile));
  ret iteratorFromFunction_f0_autoCloseable(func -> short[] {
    short[] buf = new short[windowSize];
    int n = decoder.readMonoSamples(buf);
    if (n <= 0) null;
    ret subArray(buf, 0, n);
  }, decoder);
}