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AEC3: Correct high-band gain for multi-channel

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The high-band gain is corrected by fixing the computation of the
low-band energy

Bug: webrtc:14108
Change-Id: I5033287de57aedcd91bb71623ca2862519ffb35b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/263201
Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org>
Reviewed-by: Jesus de Vicente Pena <devicentepena@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36972}
This commit is contained in:
Gustaf Ullberg 2022-05-23 13:57:07 +02:00 committed by WebRTC LUCI CQ
parent c80a182e55
commit fbfe6f08a4
1 changed files with 3 additions and 5 deletions
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8
modules/audio_processing/aec3/suppression_gain.cc
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@ -136,11 +136,9 @@ float SuppressionGain::UpperBandsGain(
const auto sum_of_squares = [](float a, float b) { return a + b * b; };
float low_band_energy = 0.f;
for (int ch = 0; ch < num_render_channels; ++ch) {
// TODO(bugs.webrtc.org/14108): Fix the computation below to compute the
// energy for each channel.
const float channel_energy = std::accumulate(
render.begin(/*band=0*/ 0, /*channel=*/0),
render.end(/*band=0*/ 0, /*channel=*/0), 0.f, sum_of_squares);
const float channel_energy =
std::accumulate(render.begin(/*band=*/0, ch),
render.end(/*band=*/0, ch), 0.0f, sum_of_squares);
low_band_energy = std::max(low_band_energy, channel_energy);
}
float high_band_energy = 0.f;