ADD piano transcription

[kyakuno]

https://github.com/bytedance/piano_transcription

[ooe1123]

torchlibrosaモジュールのコードで、Log10を使わないように修正

• site-packages/torchlibrosa/stft.py

  class LogmelFilterBank(nn.Module):
  ...
  def power_to_db(self, input):
      ...
      log_spec = 10.0 * torch.log10(torch.clamp(input, min=self.amin, max=np.inf))

  ↓

  class LogmelFilterBank(nn.Module):
  ...
  def power_to_db(self, input):
      ...
      x = torch.clamp(input, min=self.amin, max=np.inf)
      log_spec = 10.0 * torch.log(x) / torch.log(torch.tensor(10))