subband_WaveRNN

A pytorch implementation of the subband_WaveRNN mentioned in DURIAN(https://arxiv.org/pdf/1909.01700.pdf)

Attention

• I did not add local condition, I just implemented the subband framework.
• If you want to use it, you should add local condition for it, and you should aslo implement a sub-band filter.

Reference

• DURIAN: DURATION INFORMED ATTENTION NETWORK FOR MULTIMODAL SYNTHESIS(https://arxiv.org/pdf/1909.01700.pdf)
• fatchord/WaveRNN.