5c532d3774
This CL robustifies the echo removal behavior when headsets are used. In particular it: -Introduces a secondary, more refined alignment when no alignment can be found using the delay estimator. -Changes decision logic for when to use the linear filter output. -Changes the decision logic for when to be transparent. -Changes the way that the transparent mode works. -Makes the nonlinear mode less aggressive. -Removes the detector for non-audible echoes. -Makes the attenuation when there are signals with strong narrowband characteristics more mild in scenarios with low render. Furthermore the CL: -Removes the input of external echo leakage information. Bug: webrtc:9047,chromium:824111,webrtc:8314,webrtc:8671,webrtc:5201,webrtc:5919 Change-Id: Ied1fe0c0a35d3c31b47606ed2db319a73644d406 Reviewed-on: https://webrtc-review.googlesource.com/60866 Commit-Queue: Per Åhgren <peah@webrtc.org> Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22548}
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
/*
|
|
* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#ifndef MODULES_AUDIO_PROCESSING_AEC3_SUPPRESSION_GAIN_LIMITER_H_
|
|
#define MODULES_AUDIO_PROCESSING_AEC3_SUPPRESSION_GAIN_LIMITER_H_
|
|
|
|
#include "api/array_view.h"
|
|
#include "api/audio/echo_canceller3_config.h"
|
|
#include "rtc_base/constructormagic.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// Class for applying a smoothly increasing limit for the suppression gain
|
|
// during call startup and after in-call resets.
|
|
class SuppressionGainUpperLimiter {
|
|
public:
|
|
explicit SuppressionGainUpperLimiter(const EchoCanceller3Config& config);
|
|
|
|
// Reset the limiting behavior.
|
|
void Reset();
|
|
|
|
// Updates the limiting behavior for the current capture bloc.
|
|
void Update(bool render_activity, bool transparent_mode);
|
|
|
|
// Returns the current suppressor gain limit.
|
|
float Limit() const { return suppressor_gain_limit_; }
|
|
|
|
private:
|
|
const EchoCanceller3Config::EchoRemovalControl::GainRampup rampup_config_;
|
|
const float gain_rampup_increase_;
|
|
bool call_startup_phase_ = true;
|
|
int realignment_counter_ = 0;
|
|
bool active_render_seen_ = false;
|
|
float suppressor_gain_limit_ = 1.f;
|
|
bool recent_reset_ = false;
|
|
|
|
RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(SuppressionGainUpperLimiter);
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // MODULES_AUDIO_PROCESSING_AEC3_SUPPRESSION_GAIN_LIMITER_H_
|