Compatibility with TTS systems #47
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Various Text-to-Speech(TTS) implementations( Grad-TTS, Matcha-TTS, P-flow ) rely on the mel spectrogram feature extractor code found in hifi-gan
This PR introduces modifications to the feature extractor in order to enable the Vocos to work seamlessly with the outputs generated by the those TTS systems.
To achieve this, the parameters within the
torchaudio.transforms.MelSpectrogramwere adjusted to match the features generated in the hifi-gan codebase. Specifically the changes were made in the frequency limits and the mel scale.We trained Vocos 400k steps using this changes and we're able to obtain a reasonable good quality audio from the output of Matcha-TTS.
Closes #39