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AGC2 RNN VAD: Spectral features internal API.

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This CL adds helper functions to be used for the spectral features
computation. Namely, it includes the following:
- band boundaries (frequency to FFT coeffcient index)
- band energy coefficients
- log band energy coefficients
- fixed size DCT table and computation

Bug: webrtc:9076
Change-Id: I03a8799b226d986bc1e37cefd0c3039f94b5592a
Reviewed-on: https://webrtc-review.googlesource.com/73687
Reviewed-by: Alex Loiko <aleloi@webrtc.org>
Reviewed-by: Minyue Li <minyue@webrtc.org>
Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23170}
This commit is contained in:
Alessio Bazzica
2018-05-08 11:10:45 +02:00
committed by Commit Bot
parent 496caa9095
commit 0bd0a3fe4c
9 changed files with 385 additions and 9 deletions
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resources/audio_processing/agc2/rnn_vad/band_energies.dat.sha1 Normal file
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resources/audio_processing/agc2/rnn_vad/fft.dat.sha1 Normal file
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