webrtc_m130/modules/audio_processing
Alessio Bazzica 4d4cce8b3f RNN VAD: Switch to PFFFT
This CL replaces KissFFT with PFFFT for the spectral features
computation.

Remarks:
- Extra FFT output vector copy eliminated
- Scaling and windowing merged into a single vector for efficiency
- Nyquist frequency hack to keep the iteration in
  BandFeaturesExtractor::ComputeSpectralCrossCorrelation simple

Bug: webrtc:9577, webrtc:10480
Change-Id: I436563bd257f66a243f5402be270ffcf859bd184
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/130221
Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
Reviewed-by: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27536}
2019-04-10 09:54:54 +00:00
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