espnet2.enh.layers.bsrnn.get_mel_subbands

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espnet2.enh.layers.bsrnn.get_mel_subbands(input_dim, n_mels=40, target_fs=48000)

Get mel division of subbands.

Reference: : https://github.com/lucidrains/BS-RoFormer/blob/main/bs_roformer/mel_band_roformer.py#L432-L464

• Parameters:
  • input_dim (int) – number of frequency bins corresponding to target_fs Assumed to be n_fft // 2 + 1, where n_fft is the FFT size.
  • n_mels (int) – number of mel frequency bands to be used.
  • target_fs (int) – target sampling frequency in Hz.
• Returns: a tuple of overlapping subbands (start and end indices)
• Return type: subbands (tuple)