estimation.py 文件源码

def hz2erbs(hz):
    """
    Convert values in Hertz to values in Equivalent rectangle bandwidth (ERBs)

    Args:
        hz (float): real number in Hz

    Returns:
        erbs (float): real number in ERBs

    References:
    [1] Camacho, A., & Harris, J. G. (2008). A sawtooth waveform
        inspired pitch estimator for speech and music. The Journal
        of the Acoustical Society of America, 124(3), 1638–1652.
        https://doi.org/10.1121/1.2951592
    """
    erbs = 6.44 * (np.log2(229 + hz) - 7.84)
    return erbs