magphase.py 文件源码

def format_for_modelling(m_mag, m_real, m_imag, v_f0, fs, nbins_mel=60, nbins_phase=45):

    # alpha:
    alpha = define_alpha(fs)

    # f0 to Smoothed lf0:
    v_voi = (v_f0>0).astype('float')
    v_f0_smth  = v_voi * signal.medfilt(v_f0)
    v_lf0_smth = la.f0_to_lf0(v_f0_smth)

    # Mag to Log-Mag-Mel (compression):
    m_mag_mel = la.sp_mel_warp(m_mag, nbins_mel, alpha=alpha, in_type=3)
    m_mag_mel_log =  la.log(m_mag_mel)

    # Phase feats to Mel-phase (compression):
    m_imag_mel = la.sp_mel_warp(m_imag, nbins_mel, alpha=alpha, in_type=2)
    m_real_mel = la.sp_mel_warp(m_real, nbins_mel, alpha=alpha, in_type=2)

    # Cutting phase vectors:
    m_real_mel = m_real_mel[:,:nbins_phase]
    m_imag_mel = m_imag_mel[:,:nbins_phase]

    # Removing phase in unvoiced frames ("random" values):
    m_real_mel = m_real_mel * v_voi[:,None]
    m_imag_mel = m_imag_mel * v_voi[:,None]

    # Clipping between -1 and 1:
    m_real_mel = np.clip(m_real_mel, -1, 1)
    m_imag_mel = np.clip(m_imag_mel, -1, 1)

    return m_mag_mel_log, m_real_mel, m_imag_mel, v_lf0_smth