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b6b00dc180
This CL adds functionality to allow removal of any echo occurring before the render and capture signals have been properly aligned. The functionality is added in such a manner that the transparency to nearend is maintained as much as possible. Bug: webrtc:8883 Change-Id: I813cbbc4c48822e7dffcd9ab6233be4c222089de Reviewed-on: https://webrtc-review.googlesource.com/49941 Commit-Queue: Per Åhgren <peah@webrtc.org> Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22107}
121 lines
3.1 KiB
C++
121 lines
3.1 KiB
C++
/*
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* Copyright (c) 2018 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 API_AUDIO_ECHO_CANCELLER3_CONFIG_H_
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#define API_AUDIO_ECHO_CANCELLER3_CONFIG_H_
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#include <stddef.h> // size_t
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namespace webrtc {
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// Configuration struct for EchoCanceller3
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struct EchoCanceller3Config {
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EchoCanceller3Config();
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struct Delay {
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size_t default_delay = 5;
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size_t down_sampling_factor = 4;
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size_t num_filters = 5;
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size_t api_call_jitter_blocks = 26;
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size_t min_echo_path_delay_blocks = 0;
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size_t delay_headroom_blocks = 2;
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size_t hysteresis_limit_1_blocks = 1;
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size_t hysteresis_limit_2_blocks = 1;
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} delay;
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struct Filter {
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struct MainConfiguration {
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size_t length_blocks;
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float leakage_converged;
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float leakage_diverged;
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float error_floor;
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float noise_gate;
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};
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struct ShadowConfiguration {
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size_t length_blocks;
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float rate;
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float noise_gate;
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};
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MainConfiguration main = {13, 0.005f, 0.1f, 0.001f, 20075344.f};
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ShadowConfiguration shadow = {13, 0.7f, 20075344.f};
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MainConfiguration main_initial = {12, 0.05f, 5.f, 0.001f, 20075344.f};
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ShadowConfiguration shadow_initial = {12, 0.9f, 20075344.f};
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} filter;
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struct Erle {
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float min = 1.f;
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float max_l = 8.f;
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float max_h = 1.5f;
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} erle;
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struct EpStrength {
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float lf = 10.f;
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float mf = 10.f;
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float hf = 10.f;
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float default_len = 0.f;
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bool echo_can_saturate = true;
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bool bounded_erl = false;
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} ep_strength;
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struct Mask {
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float m1 = 0.01f;
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float m2 = 0.0001f;
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float m3 = 0.01f;
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float m4 = 0.1f;
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float m5 = 0.1f;
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float m6 = 0.0001f;
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float m7 = 0.01f;
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float m8 = 0.0001f;
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float m9 = 0.1f;
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} gain_mask;
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struct EchoAudibility {
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float low_render_limit = 4 * 64.f;
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float normal_render_limit = 64.f;
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} echo_audibility;
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struct RenderLevels {
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float active_render_limit = 100.f;
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float poor_excitation_render_limit = 150.f;
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} render_levels;
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struct GainUpdates {
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struct GainChanges {
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float max_inc;
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float max_dec;
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float rate_inc;
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float rate_dec;
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float min_inc;
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float min_dec;
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};
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GainChanges low_noise = {2.f, 2.f, 1.4f, 1.4f, 1.1f, 1.1f};
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GainChanges initial = {2.f, 2.f, 1.5f, 1.5f, 1.2f, 1.2f};
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GainChanges normal = {2.f, 2.f, 1.5f, 1.5f, 1.2f, 1.2f};
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GainChanges saturation = {1.2f, 1.2f, 1.5f, 1.5f, 1.f, 1.f};
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GainChanges nonlinear = {1.5f, 1.5f, 1.2f, 1.2f, 1.1f, 1.1f};
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float floor_first_increase = 0.00001f;
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} gain_updates;
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struct EchoRemovalControl {
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struct GainRampup {
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float first_non_zero_gain = 0.001f;
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int non_zero_gain_blocks = 187;
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int full_gain_blocks = 312;
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} gain_rampup;
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} echo_removal_control;
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};
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} // namespace webrtc
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#endif // API_AUDIO_ECHO_CANCELLER3_CONFIG_H_
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