50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
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/*
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* Copyright (c) 2019 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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#include "modules/audio_processing/ns/suppression_params.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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SuppressionParams::SuppressionParams(
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NsConfig::SuppressionLevel suppression_level) {
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switch (suppression_level) {
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case NsConfig::SuppressionLevel::k6dB:
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over_subtraction_factor = 1.f;
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// 6 dB attenuation.
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minimum_attenuating_gain = 0.5f;
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use_attenuation_adjustment = false;
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break;
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case NsConfig::SuppressionLevel::k12dB:
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over_subtraction_factor = 1.f;
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// 12 dB attenuation.
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minimum_attenuating_gain = 0.25f;
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use_attenuation_adjustment = true;
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break;
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case NsConfig::SuppressionLevel::k18dB:
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over_subtraction_factor = 1.1f;
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// 18 dB attenuation.
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minimum_attenuating_gain = 0.125f;
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use_attenuation_adjustment = true;
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break;
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case NsConfig::SuppressionLevel::k21dB:
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over_subtraction_factor = 1.25f;
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// 20.9 dB attenuation.
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minimum_attenuating_gain = 0.09f;
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use_attenuation_adjustment = true;
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break;
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default:
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RTC_DCHECK_NOTREACHED();
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}
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}
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} // namespace webrtc
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