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| author | aluebs@webrtc.org <aluebs@webrtc.org> | 2014-11-26 20:21:38 +0000 |
|---|---|---|
| committer | aluebs@webrtc.org <aluebs@webrtc.org> | 2014-11-26 20:21:38 +0000 |
| commit | 79b9eba3abbf02f7a569280d8a735847ce09ec25 (patch) | |
| tree | 7890d974709afc2a1704e9b0f85222307a1d94ff /webrtc/modules/audio_processing/audio_processing.gypi | |
| parent | 7806d8fe40068570c246898366062d734095175b (diff) | |
| download | webrtc-79b9eba3abbf02f7a569280d8a735847ce09ec25.tar.gz | |
Implement 3 band splitting filter bank by upsampling and splitting twice into 2 bands
Implemented the 3 bands splitting filter bank by:
1. Upsample by 4/3.
2. Split twice into 2 bands.
3. Discard upper most band, because it is empty anyway.
A unittest was also implemented:
1. Generate a signal from presence or absence of sine waves of different frequencies.
2. Split into 3 bands and check their presence or absence.
3. Recombine the bands.
4. Calculate delay (as it is an IIR it depends on frequency).
5. Check that the cross correlation of input and output is high enough at that delay.
BUG=webrtc:3146
R=andrew@webrtc.org, bjornv@webrtc.org, kwiberg@webrtc.org
Review URL: https://webrtc-codereview.appspot.com/31029004
git-svn-id: http://webrtc.googlecode.com/svn/trunk@7754 4adac7df-926f-26a2-2b94-8c16560cd09d
Diffstat (limited to 'webrtc/modules/audio_processing/audio_processing.gypi')
| -rw-r--r-- | webrtc/modules/audio_processing/audio_processing.gypi | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/webrtc/modules/audio_processing/audio_processing.gypi b/webrtc/modules/audio_processing/audio_processing.gypi index b2c9bb4087..c72aa2e7a6 100644 --- a/webrtc/modules/audio_processing/audio_processing.gypi +++ b/webrtc/modules/audio_processing/audio_processing.gypi @@ -56,6 +56,8 @@ 'audio_buffer.h', 'audio_processing_impl.cc', 'audio_processing_impl.h', + 'channel_buffer.cc', + 'channel_buffer.h', 'common.h', 'echo_cancellation_impl.cc', 'echo_cancellation_impl.h', |