c65ce78027
This CL separates the NLP gain computation for the different variants of echo estimation. This simplifies the setting of tuning parameters, with resulting transparency improvements and increased echo removal performance. Bug: webrtc:8359 Change-Id: I9b97064396fb6f6e2f418ce534573f68694390a1 Reviewed-on: https://webrtc-review.googlesource.com/7613 Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org> Commit-Queue: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20209}
72 lines
2.7 KiB
C++
72 lines
2.7 KiB
C++
/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_AUDIO_PROCESSING_AEC3_SUPPRESSION_GAIN_H_
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#define MODULES_AUDIO_PROCESSING_AEC3_SUPPRESSION_GAIN_H_
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#include <array>
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#include <vector>
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#include "modules/audio_processing/aec3/aec3_common.h"
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#include "modules/audio_processing/aec3/render_signal_analyzer.h"
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#include "modules/audio_processing/include/audio_processing.h"
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#include "rtc_base/constructormagic.h"
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namespace webrtc {
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class SuppressionGain {
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public:
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SuppressionGain(const AudioProcessing::Config::EchoCanceller3& config,
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Aec3Optimization optimization);
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void GetGain(const std::array<float, kFftLengthBy2Plus1>& nearend,
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const std::array<float, kFftLengthBy2Plus1>& echo,
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const std::array<float, kFftLengthBy2Plus1>& comfort_noise,
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const RenderSignalAnalyzer& render_signal_analyzer,
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bool saturated_echo,
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const std::vector<std::vector<float>>& render,
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bool force_zero_gain,
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bool linear_echo_estimate,
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float* high_bands_gain,
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std::array<float, kFftLengthBy2Plus1>* low_band_gain);
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private:
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void LowerBandGain(bool stationary_with_low_power,
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const rtc::Optional<int>& narrow_peak_band,
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bool saturated_echo,
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bool linear_echo_estimate,
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const std::array<float, kFftLengthBy2Plus1>& nearend,
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const std::array<float, kFftLengthBy2Plus1>& echo,
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const std::array<float, kFftLengthBy2Plus1>& comfort_noise,
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std::array<float, kFftLengthBy2Plus1>* gain);
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class LowNoiseRenderDetector {
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public:
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bool Detect(const std::vector<std::vector<float>>& render);
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private:
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float average_power_ = 32768.f * 32768.f;
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};
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const Aec3Optimization optimization_;
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std::array<float, kFftLengthBy2Plus1> last_gain_;
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std::array<float, kFftLengthBy2Plus1> last_masker_;
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std::array<float, kFftLengthBy2Plus1> gain_increase_;
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std::array<float, kFftLengthBy2Plus1> last_echo_;
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LowNoiseRenderDetector low_render_detector_;
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size_t no_saturation_counter_ = 0;
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const AudioProcessing::Config::EchoCanceller3 config_;
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RTC_DISALLOW_COPY_AND_ASSIGN(SuppressionGain);
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_AEC3_SUPPRESSION_GAIN_H_
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