How to select num_taps and beta for PQMF?

kan-bayashi / ParallelWaveGAN

Unofficial Parallel WaveGAN (+ MelGAN & Multi-band MelGAN & HiFi-GAN & StyleMelGAN) with Pytorch

https://kan-bayashi.github.io/ParallelWaveGAN/

MIT License

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How to select num_taps and beta for PQMF? #404

Closed bfs18 closed 1 year ago

bfs18 commented 1 year ago

Hi, thanks for the great repo. How to select num_taps and beta for PQMF? I tried scipy.signal.kaiserord(100, 1 / (2*4)), however the result is different from the parameter in the code.

bfs18 commented 1 year ago

62, 9.0 seems conforms to the following equation num_taps, beta = kaiserord(90, 0.5 / num_subbands * 1.5)

kan-bayashi commented 1 year ago

You can check the notebook: https://github.com/kan-bayashi/ParallelWaveGAN/blob/master/notebooks/filter_design_example.ipynb