3c382e94cf3a01f73bf96837eb6428b118555569,librosa/core/audio.py,,stream,#,213

Before Change

    block_stream = __stream(path, sr, block_length, frame_length, hop_length,
                            mono, offset, duration, fill_value, dtype)

    return block_stream, sr


def __stream(path, sr, block_length, frame_length, hop_length,
             mono, offset, duration, fill_value, dtype):

After Change

        start = 0

    if duration:
        frames = int(duration * sr)
    else:
        frames = -1

    blocks = sf.blocks(path,
                       blocksize=frame_length + (block_length - 1) * hop_length,
                       overlap=frame_length - hop_length,
                       fill_value=fill_value,
                       start=start,
                       frames=frames,
                       dtype=dtype,
                       always_2d=False)

    for block in blocks:
        if mono:
            yield to_mono(block.T)
        else:
            yield block.T


@cache(level=20)
def to_mono(y):
    """Force an audio signal down to mono.

Instances