bbfed4c0b19757ceb913766e4d1fd3ee4cd78b30,librosa/feature/inverse.py,,mfcc_to_mel,#Any#Any#Any#Any#Any#Any#,168

Before Change

        idx = np.arange(1, 1 + n_mfcc, dtype=mfcc.dtype)
        lifter_sine = 1 + (lifter / 2) * np.sin(np.pi * idx / lifter)[:, np.newaxis]
        lifter_sine = np.where(lifter_sine == 0, np.finfo(float).eps, lifter_sine)
        mfcc = np.where(mfcc == 0, np.finfo(float).eps, mfcc) 
        liftered_mfcc = mfcc / lifter_sine
        mfcc = liftered_mfcc

After Change

        lifter_sine = 1 + (lifter / 2) * np.sin(np.pi * idx / lifter)[:, np.newaxis]

        // check lifter array for critical values
        if (lifter_sine == 0).any():
            warnings.warn("Warning: lifter array includes critial values that will likely to invoke underflow.")

        // lifter mfcc values
        mfcc = mfcc / lifter_sine

    elif lifter != 0:
        raise ParameterError("MFCC to mel lifter={} must be a non-negative number".format(lifter))

Instances