Merge pull request #1007 from digisomni/feature/manual-noise-reduction-gate

Add manual mode to noise reduction + add noise reduction threshold

interface/resources/qml/hifi/audio/Audio.qml

@@ -15,6 +15,7 @@
 import QtQuick 2.10
 import QtQuick.Controls 2.2
 import QtQuick.Layouts 1.3
+import QtGraphicalEffects 1.0
 
 import stylesUit 1.0
 import controlsUit 1.0 as HifiControlsUit
@@ -104,6 +105,11 @@ Rectangle {
             AudioScriptingInterface.setSystemInjectorGain(sliderValue);
         }
     }
+    function updateNoiseReductionThresholdFromQML(sliderValue) {
+        if (AudioScriptingInterface.getNoiseReductionThreshold() !== sliderValue) {
+            AudioScriptingInterface.setNoiseReductionThreshold(sliderValue);
+        }
+    }
 
     Component.onCompleted: {
         enablePeakValues();
@@ -164,7 +170,7 @@ Rectangle {
             x: 2 * margins.paddings;
             width: parent.width;
             // switch heights + 2 * top margins
-            height: (root.switchHeight) * 6 + 48;
+            height: (bar.currentIndex === 0) ? (root.switchHeight) * 2 + 48 : (root.switchHeight) * 4 + 48;
             anchors.top: firstSeparator.bottom;
             anchors.topMargin: 10;
 
@@ -175,6 +181,7 @@ Rectangle {
                 height: parent.height;
                 anchors.top: parent.top
                 anchors.left: parent.left;
+
                 HifiControlsUit.Switch {
                     id: muteMic;
                     height: root.switchHeight;
@@ -193,45 +200,11 @@ Rectangle {
                     }
                 }
 
-                HifiControlsUit.Switch {
-                    id: noiseReductionSwitch;
-                    height: root.switchHeight;
-                    switchWidth: root.switchWidth;
-                    anchors.top: muteMic.bottom;
-                    anchors.topMargin: 24
-                    anchors.left: parent.left
-                    labelTextOn: "Noise Reduction";
-                    labelTextSize: 16;
-                    backgroundOnColor: "#E3E3E3";
-                    checked: AudioScriptingInterface.noiseReduction;
-                    onCheckedChanged: {
-                        AudioScriptingInterface.noiseReduction = checked;
-                        checked = Qt.binding(function() { return AudioScriptingInterface.noiseReduction; }); // restore binding
-                    }
-                }
-
-                HifiControlsUit.Switch {
-                    id: acousticEchoCancellationSwitch;
-                    height: root.switchHeight;
-                    switchWidth: root.switchWidth;
-                    anchors.top: noiseReductionSwitch.bottom
-                    anchors.topMargin: 24
-                    anchors.left: parent.left
-                    labelTextOn: "Echo Cancellation";
-                    labelTextSize: 16;
-                    backgroundOnColor: "#E3E3E3";
-                    checked: AudioScriptingInterface.acousticEchoCancellation;
-                    onCheckedChanged: {
-                        AudioScriptingInterface.acousticEchoCancellation = checked;
-                        checked = Qt.binding(function() { return AudioScriptingInterface.acousticEchoCancellation; });
-                    }
-                }
-
                 HifiControlsUit.Switch {
                     id: pttSwitch
                     height: root.switchHeight;
                     switchWidth: root.switchWidth;
-                    anchors.top: acousticEchoCancellationSwitch.bottom;
+                    anchors.top: muteMic.bottom;
                     anchors.topMargin: 24
                     anchors.left: parent.left
                     labelTextOn: (bar.currentIndex === 0) ? qsTr("Push To Talk (T)") : qsTr("Push To Talk");
@@ -254,6 +227,7 @@ Rectangle {
                 height: parent.height;
                 anchors.top: parent.top
                 anchors.left: switchContainer.right;
+
                 HifiControlsUit.Switch {
                     id: warnMutedSwitch
                     height: root.switchHeight;
@@ -271,7 +245,6 @@ Rectangle {
                     }
                 }
 
-
                 HifiControlsUit.Switch {
                     id: audioLevelSwitch
                     height: root.switchHeight;
@@ -520,12 +493,263 @@ Rectangle {
             anchors.topMargin: 10;
         }
         
+        Item {
+            id: noiseReductionHeader
+            x: margins.paddings;
+            width: parent.width - margins.paddings * 2;
+            height: 36;
+            anchors.top: secondSeparator.bottom;
+            anchors.topMargin: 10;
+
+            HiFiGlyphs {
+                width: margins.sizeCheckBox;
+                text: hifi.glyphs.mic;
+                color: hifi.colors.white;
+                anchors.left: parent.left;
+                anchors.leftMargin: -size / 4; // The glyph has empty space at left about 25%
+                anchors.verticalCenter: parent.verticalCenter;
+                size: 30;
+            }
+
+            RalewayRegular {
+                anchors.verticalCenter: parent.verticalCenter;
+                width: margins.sizeText + margins.sizeLevel;
+                anchors.left: parent.left;
+                anchors.leftMargin: margins.sizeCheckBox;
+                size: 22;
+                color: hifi.colors.white;
+                text: qsTr("Noise Reduction");
+            }
+        }
+        
+        Item {
+            id: noiseReductionSwitches;
+            x: 2 * margins.paddings;
+            width: parent.width;
+            // switch heights + 2 * top margins
+            height: (root.switchHeight) * 5 + 48;
+            anchors.top: noiseReductionHeader.bottom;
+            anchors.topMargin: 0;
+        
+            Item {
+                 id: noiseReductionSwitchContainer;
+                 x: margins.paddings;
+                 width: parent.width / 2;
+                 height: parent.height;
+                 anchors.top: parent.top;
+                 anchors.left: parent.left;
+            
+                HifiControlsUit.Switch {
+                    id: acousticEchoCancellationSwitch;
+                    height: root.switchHeight;
+                    switchWidth: root.switchWidth;
+                    anchors.top: noiseReductionSwitchContainer.top
+                    anchors.topMargin: 24
+                    anchors.left: parent.left
+                    labelTextOn: "Echo Cancellation";
+                    labelTextSize: 16;
+                    backgroundOnColor: "#E3E3E3";
+                    checked: AudioScriptingInterface.acousticEchoCancellation;
+                    onCheckedChanged: {
+                        AudioScriptingInterface.acousticEchoCancellation = checked;
+                        checked = Qt.binding(function () { return AudioScriptingInterface.acousticEchoCancellation; });
+                    }
+                }
+                
+                HifiControlsUit.Switch {
+                    id: noiseReductionSwitch;
+                    height: root.switchHeight;
+                    switchWidth: root.switchWidth;
+                    anchors.top: acousticEchoCancellationSwitch.bottom;
+                    anchors.topMargin: 24
+                    anchors.left: parent.left
+                    labelTextOn: "Noise Reduction";
+                    labelTextSize: 16;
+                    backgroundOnColor: "#E3E3E3";
+                    checked: AudioScriptingInterface.noiseReduction;
+                    onCheckedChanged: {
+                        AudioScriptingInterface.noiseReduction = checked;
+                        checked = Qt.binding(function () { return AudioScriptingInterface.noiseReduction; }); // restore binding
+                    }
+                }
+                
+                HifiControlsUit.Switch {
+                    id: noiseReductionAutomaticSwitch;
+                    height: root.switchHeight;
+                    switchWidth: root.switchWidth;
+                    anchors.top: noiseReductionSwitch.bottom;
+                    anchors.topMargin: 24;
+                    anchors.left: parent.left;
+                    labelTextOn: "Manual Noise Reduction";
+                    labelTextSize: 16;
+                    backgroundOnColor: "#E3E3E3";
+                    checked: !AudioScriptingInterface.noiseReductionAutomatic;
+                    visible: AudioScriptingInterface.noiseReduction;
+                    onCheckedChanged: {
+                        AudioScriptingInterface.noiseReductionAutomatic = !checked;
+                        checked = Qt.binding(function () { return !AudioScriptingInterface.noiseReductionAutomatic; }); // restore binding
+                    }
+                }
+            }
+        }
+        
+        Item {
+            id: noiseReductionThresholdContainer
+            x: margins.paddings;
+            anchors.top: noiseReductionSwitches.bottom;
+            anchors.topMargin: 16;
+            width: parent.width - margins.paddings * 2;
+            height: avatarGainSliderTextMetrics.height + 10;
+            visible: AudioScriptingInterface.noiseReduction && !AudioScriptingInterface.noiseReductionAutomatic;
+
+            HifiControlsUit.Slider {
+                id: noiseReductionThresholdSlider
+                anchors.right: parent.right
+                height: noiseReductionThresholdSliderTextMetrics.height
+                width: 200
+                minimumValue: 0.0
+                maximumValue: 1.0
+                stepSize: 0.05
+                value: AudioScriptingInterface.getNoiseReductionThreshold()
+                onValueChanged: {
+                    updateNoiseReductionThresholdFromQML(value);
+                }
+                onPressedChanged: {
+                    if (!pressed) {
+                        updateNoiseReductionThresholdFromQML(value);
+                    }
+                }
+
+                MouseArea {
+                    anchors.fill: parent
+                    onWheel: {
+                        // Do nothing.
+                    }
+                    onDoubleClicked: {
+                        noiseReductionThresholdSlider.value = 0.0;
+                    }
+                    onPressed: {
+                        // Pass through to Slider
+                        mouse.accepted = false;
+                    }
+                    onReleased: {
+                        // the above mouse.accepted seems to make this
+                        // never get called, nonetheless...
+                        mouse.accepted = false;
+                    }
+                }
+            }
+            TextMetrics {
+                id: noiseReductionThresholdSliderTextMetrics
+                text: noiseReductionThresholdSliderText.text
+                font: noiseReductionThresholdSliderText.font
+            }
+            RalewayRegular {
+                // The slider for my card is special, it controls the master gain
+                id: noiseReductionThresholdSliderText;
+                text: "Audio input threshold";
+                size: 16;
+                anchors.left: parent.left;
+                color: hifi.colors.white;
+                horizontalAlignment: Text.AlignLeft;
+                verticalAlignment: Text.AlignTop;
+            }
+            
+            Item {
+                id: noisePeak
+                anchors.right: parent.right
+                anchors.rightMargin: 5;
+                anchors.top: noiseReductionThresholdSlider.bottom;
+
+                width: noiseReductionThresholdSlider.width - 10;
+                height: 8;
+
+                Text {
+                    id: status;
+
+                    anchors {
+                        horizontalCenter: parent.horizontalCenter;
+                        verticalCenter: parent.verticalCenter;
+                    }
+            
+                    visible: AudioScriptingInterface.muted;
+                    color: "#E2334D";
+            
+                    text: "MUTED";
+                    font.pointSize: 10;
+                }
+            
+                Item {
+                    id: noiseBar;
+                    
+                    property bool gated: false;
+                    property var level: AudioScriptingInterface.inputLevel;
+
+                    width: parent.width;
+                    height: parent.height;
+
+                    anchors { fill: parent }
+
+                    visible: !status.visible;
+
+                    Component.onCompleted: {
+                        AudioScriptingInterface.noiseGateOpened.connect(function () { noiseBar.gated = false; });
+                        AudioScriptingInterface.noiseGateClosed.connect(function () { noiseBar.gated = true; });
+                        AudioScriptingInterface.inputLevelChanged.connect(function () { noiseBar.level = AudioScriptingInterface.inputLevel; });
+                    }
+
+                    Rectangle { // base
+                        radius: 4;
+                        anchors { fill: parent }
+                        color: colors.gutter;
+                    }
+
+                    Rectangle { // noiseMask
+                        id: noiseMask;
+                        width: parent.width * noiseBar.level;
+                        radius: 5;
+                        anchors {
+                            bottom: parent.bottom;
+                            bottomMargin: 0;
+                            top: parent.top;
+                            topMargin: 0;
+                            left: parent.left;
+                            leftMargin: 0;
+                        }
+                    }
+
+                    LinearGradient {
+                        anchors { fill: noiseMask }
+                        source: noiseMask
+                        start: Qt.point(0, 0);
+                        end: Qt.point(noiseBar.width, 0);
+                        gradient: Gradient {
+                            GradientStop {
+                                position: 0;
+                                color: noiseBar.gated ? "#E2334D" : "#39A38F";
+                            }
+                            GradientStop {
+                                position: 1;
+                                color: noiseBar.gated ? "#E2334D" : "#39A38F";
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        
+        Separator {
+            id: thirdSeparator;
+            anchors.top: noiseReductionThresholdContainer.bottom;
+            anchors.topMargin: 14;
+        }
+
         Item {
             id: inputDeviceHeader
             x: margins.paddings;
             width: parent.width - margins.paddings*2;
             height: 36;
-            anchors.top: secondSeparator.bottom;
+            anchors.top: thirdSeparator.bottom;
             anchors.topMargin: 10;
 
             HiFiGlyphs {
@@ -597,19 +821,19 @@ Rectangle {
                     }
                 }
                 AudioControls.InputPeak {
-                id: inputLevel
+                    id: inputLevel
-                anchors.right: parent.right
+                    anchors.right: parent.right
-                peak: model.peak;
+                    peak: model.peak;
-                anchors.verticalCenter: parent.verticalCenter
+                    anchors.verticalCenter: parent.verticalCenter
-                visible: ((bar.currentIndex === 1 && isVR) ||
+                    visible: ((bar.currentIndex === 1 && isVR) ||
-                         (bar.currentIndex === 0 && !isVR)) &&
+                             (bar.currentIndex === 0 && !isVR)) &&
-                         AudioScriptingInterface.devices.input.peakValuesAvailable;
+                             AudioScriptingInterface.devices.input.peakValuesAvailable;
                 }
             }
         }
 
         Separator {
-            id: thirdSeparator;
+            id: fourthSeparator;
             anchors.top: inputView.bottom;
             anchors.topMargin: 10;
         }
@@ -617,7 +841,7 @@ Rectangle {
         Item {
             id: outputDeviceHeader;
             anchors.topMargin: 10;
-            anchors.top: thirdSeparator.bottom;
+            anchors.top: fourthSeparator.bottom;
             x: margins.paddings;
             width: parent.width - margins.paddings*2
             height: 36

interface/src/scripting/Audio.cpp

@@ -25,6 +25,8 @@ QString Audio::DESKTOP { "Desktop" };
 QString Audio::HMD { "VR" };
 
 Setting::Handle<bool> enableNoiseReductionSetting { QStringList { Audio::AUDIO, "NoiseReduction" }, true };
+Setting::Handle<bool> enableNoiseReductionAutomaticSetting { QStringList { Audio::AUDIO, "NoiseReductionAutomatic" }, true };
+Setting::Handle<float> setNoiseReductionThresholdSetting { QStringList { Audio::AUDIO, "NoiseReductionThreshold" }, 0.1f };
 Setting::Handle<bool> enableWarnWhenMutedSetting { QStringList { Audio::AUDIO, "WarnWhenMuted" }, true };
 Setting::Handle<bool> enableAcousticEchoCancellationSetting { QStringList { Audio::AUDIO, "AcousticEchoCancellation" }, true };
 
@@ -40,6 +42,8 @@ Audio::Audio() : _devices(_contextIsHMD) {
     auto client = DependencyManager::get<AudioClient>().data();
     connect(client, &AudioClient::muteToggled, this, &Audio::setMuted);
     connect(client, &AudioClient::noiseReductionChanged, this, &Audio::enableNoiseReduction);
+    connect(client, &AudioClient::noiseReductionAutomaticChanged, this, &Audio::enableNoiseReductionAutomatic);
+    connect(client, &AudioClient::noiseReductionThresholdChanged, this, &Audio::setNoiseReductionThreshold);
     connect(client, &AudioClient::warnWhenMutedChanged, this, &Audio::enableWarnWhenMuted);
     connect(client, &AudioClient::acousticEchoCancellationChanged, this, &Audio::enableAcousticEchoCancellation);
     connect(client, &AudioClient::inputLoudnessChanged, this, &Audio::onInputLoudnessChanged);
@@ -47,6 +51,8 @@ Audio::Audio() : _devices(_contextIsHMD) {
     connect(this, &Audio::contextChanged, &_devices, &AudioDevices::onContextChanged);
     connect(this, &Audio::pushingToTalkChanged, this, &Audio::handlePushedToTalk);
     enableNoiseReduction(enableNoiseReductionSetting.get());
+    enableNoiseReductionAutomatic(enableNoiseReductionAutomaticSetting.get());
+    setNoiseReductionThreshold(setNoiseReductionThresholdSetting.get());
     enableWarnWhenMuted(enableWarnWhenMutedSetting.get());
     enableAcousticEchoCancellation(enableAcousticEchoCancellationSetting.get());
     onContextChanged();
@@ -286,6 +292,50 @@ void Audio::enableNoiseReduction(bool enable) {
     }
 }
 
+bool Audio::noiseReductionAutomatic() const {
+    return resultWithReadLock<bool>([&] {
+        return _noiseReductionAutomatic;
+    });
+}
+
+void Audio::enableNoiseReductionAutomatic(bool enable) {
+    bool changed = false;
+    withWriteLock([&] {
+        if (_noiseReductionAutomatic != enable) {
+            _noiseReductionAutomatic = enable;
+            auto client = DependencyManager::get<AudioClient>().data();
+            QMetaObject::invokeMethod(client, "setNoiseReductionAutomatic", Q_ARG(bool, enable), Q_ARG(bool, false));
+            enableNoiseReductionAutomaticSetting.set(enable);
+            changed = true;
+        }
+    });
+    if (changed) {
+        emit noiseReductionAutomaticChanged(enable);
+    }
+}
+
+float Audio::getNoiseReductionThreshold() {
+    return resultWithReadLock<float>([&] {
+        return _noiseReductionThreshold;
+    });
+}
+
+void Audio::setNoiseReductionThreshold(float threshold) {
+    bool changed = false;
+    withWriteLock([&] {
+        if (_noiseReductionThreshold != threshold) {
+            _noiseReductionThreshold = threshold;
+            auto client = DependencyManager::get<AudioClient>().data();
+            QMetaObject::invokeMethod(client, "setNoiseReductionThreshold", Q_ARG(float, threshold), Q_ARG(bool, false));
+            setNoiseReductionThresholdSetting.set(threshold);
+            changed = true;
+        }
+    });
+    if (changed) {
+        emit noiseReductionThresholdChanged(threshold);
+    }
+}
+
 bool Audio::warnWhenMutedEnabled() const {
     return resultWithReadLock<bool>([&] {
         return _enableWarnWhenMuted;

interface/src/scripting/Audio.h

@@ -50,6 +50,11 @@ class Audio : public AudioScriptingInterface, protected ReadWriteLockable {
      * @property {boolean} noiseReduction - <code>true</code> if noise reduction is enabled, otherwise <code>false</code>. When
      *     enabled, the input audio signal is blocked (fully attenuated) when it falls below an adaptive threshold set just
      *     above the noise floor.
+     * @property {boolean} noiseReductionAutomatic - <code>true</code> if audio input noise reduction automatic mode is enabled, 
+     *     <code>false</code> if in manual mode. Manual mode allows you to use <code>Audio.noiseReductionThreshold</code>
+     *     to set a manual sensitivity for the noise gate.
+     * @property {number} noiseReductionThreshold - Sets the noise gate threshold before your mic audio is transmitted. 
+     *     (Applies only if <code>Audio.noiseReductionAutomatic</code> is <code>false</code>.)
      * @property {number} inputVolume - Adjusts the volume of the input audio, range <code>0.0</code> &ndash; <code>1.0</code>. 
      *     If set to a value, the resulting value depends on the input device: for example, the volume can't be changed on some 
      *     devices, and others might only support values of <code>0.0</code> and <code>1.0</code>.
@@ -92,6 +97,8 @@ class Audio : public AudioScriptingInterface, protected ReadWriteLockable {
 
     Q_PROPERTY(bool muted READ isMuted WRITE setMuted NOTIFY mutedChanged)
     Q_PROPERTY(bool noiseReduction READ noiseReductionEnabled WRITE enableNoiseReduction NOTIFY noiseReductionChanged)
+    Q_PROPERTY(bool noiseReductionAutomatic READ noiseReductionAutomatic WRITE enableNoiseReductionAutomatic NOTIFY noiseReductionAutomaticChanged)
+    Q_PROPERTY(float noiseReductionThreshold READ getNoiseReductionThreshold WRITE setNoiseReductionThreshold NOTIFY noiseReductionThresholdChanged)
     Q_PROPERTY(bool warnWhenMuted READ warnWhenMutedEnabled WRITE enableWarnWhenMuted NOTIFY warnWhenMutedChanged)
     Q_PROPERTY(bool acousticEchoCancellation
                READ acousticEchoCancellationEnabled WRITE enableAcousticEchoCancellation NOTIFY acousticEchoCancellationChanged)
@@ -124,6 +131,7 @@ public:
 
     bool isMuted() const;
     bool noiseReductionEnabled() const;
+    bool noiseReductionAutomatic() const;
     bool warnWhenMutedEnabled() const;
     bool acousticEchoCancellationEnabled() const;
     float getInputVolume() const;
@@ -271,6 +279,20 @@ public:
     */
     Q_INVOKABLE float getSystemInjectorGain();
     
+    /**jsdoc
+     * Sets the noise gate threshold before your mic audio is transmitted. (Applies only if <code>Audio.noiseReductionAutomatic</code> is <code>false</code>.)
+     * @function Audio.setNoiseReductionThreshold
+     * @param {number} threshold - The level that your input must surpass to be transmitted. <code>0.0</code> (open the gate completely) &ndash; <code>1.0</code>
+     */
+    Q_INVOKABLE void setNoiseReductionThreshold(float threshold);
+
+    /**jsdoc
+     * Gets the noise reduction threshold.
+     * @function Audio.getNoiseReductionThreshold
+     * @returns {number} The noise reduction threshold. <code>0.0</code> &ndash; <code>1.0</code>
+    */
+    Q_INVOKABLE float getNoiseReductionThreshold();
+
     /**jsdoc
      * Starts making an audio recording of the audio being played in-world (i.e., not local-only audio) to a file in WAV format.
      * @function Audio.startRecording
@@ -399,6 +421,23 @@ signals:
      */
     void noiseReductionChanged(bool isEnabled);
     
+    /**jsdoc
+     * Triggered when the audio input noise reduction mode is changed.
+     * @function Audio.noiseReductionAutomaticChanged
+     * @param {boolean} isEnabled - <code>true</code> if audio input noise reduction automatic mode is enabled, <code>false</code> if in manual mode.
+     * @returns {Signal}
+     */
+    void noiseReductionAutomaticChanged(bool isEnabled);
+    
+    /**jsdoc
+     * Triggered when the audio input noise reduction threshold is changed.
+     * @function Audio.noiseReductionThresholdChanged
+     * @param {number} threshold - The threshold for the audio input noise reduction, range <code>0.0</code> (open the gate completely) &ndash; <code>1.0</code>
+     *     (close the gate completely).
+     * @returns {Signal}
+     */
+    void noiseReductionThresholdChanged(float threshold);
+
     /**jsdoc
      * Triggered when "warn when muted" is enabled or disabled.
      * @function Audio.warnWhenMutedChanged
@@ -512,6 +551,7 @@ public slots:
 private slots:
     void setMuted(bool muted);
     void enableNoiseReduction(bool enable);
+    void enableNoiseReductionAutomatic(bool enable);
     void enableWarnWhenMuted(bool enable);
     void enableAcousticEchoCancellation(bool enable);
     void setInputVolume(float volume);
@@ -533,8 +573,10 @@ private:
     float _localInjectorGain { 0.0f };      // in dB
     float _systemInjectorGain { 0.0f };     // in dB
     float _pttOutputGainDesktop { 0.0f };   // in dB
+    float _noiseReductionThreshold { 0.1f }; // Match default value of AudioClient::_noiseReductionThreshold.
     bool _isClipping { false };
     bool _enableNoiseReduction { true };  // Match default value of AudioClient::_isNoiseGateEnabled.
+    bool _noiseReductionAutomatic { true }; // Match default value of AudioClient::_noiseReductionAutomatic.
     bool _enableWarnWhenMuted { true };
     bool _enableAcousticEchoCancellation { true }; // AudioClient::_isAECEnabled
     bool _contextIsHMD { false };

libraries/audio-client/src/AudioClient.cpp

@@ -1266,7 +1266,7 @@ void AudioClient::processWebrtcNearEnd(int16_t* samples, int numFrames, int numC
 void AudioClient::handleLocalEchoAndReverb(QByteArray& inputByteArray) {
     // If there is server echo, reverb will be applied to the recieved audio stream so no need to have it here.
     bool hasReverb = _reverb || _receivedAudioStream.hasReverb();
-    if ((_muted && !_shouldEchoLocally) || !_audioOutput || (!_shouldEchoLocally && !hasReverb)) {
+    if ((_muted && !_shouldEchoLocally) || !_audioOutput || (!_shouldEchoLocally && !hasReverb) || !_audioGateOpen) {
         return;
     }
 
@@ -1342,6 +1342,13 @@ void AudioClient::handleLocalEchoAndReverb(QByteArray& inputByteArray) {
     }
 }
 
+float AudioClient::loudnessToLevel(float loudness) {
+    float level = loudness * (1 / 32768.0f);  // level in [0, 1]
+    level = 6.02059991f * fastLog2f(level);   // convert to dBFS
+    level = (level + 48.0f) * (1 / 42.0f);    // map [-48, -6] dBFS to [0, 1]
+    return glm::clamp(level, 0.0f, 1.0f);
+}
+
 void AudioClient::handleAudioInput(QByteArray& audioBuffer) {
     if (!_audioPaused) {
 
@@ -1352,9 +1359,14 @@ void AudioClient::handleAudioInput(QByteArray& audioBuffer) {
             int numSamples = audioBuffer.size() / AudioConstants::SAMPLE_SIZE;
             int numFrames = numSamples / (_isStereoInput ? AudioConstants::STEREO : AudioConstants::MONO);
 
-            if (_isNoiseGateEnabled) {
+            if (_isNoiseGateEnabled && _isNoiseReductionAutomatic) {
                 // The audio gate includes DC removal
                 audioGateOpen = _audioGate->render(samples, samples, numFrames);
+            } else if (_isNoiseGateEnabled && !_isNoiseReductionAutomatic &&
+                       loudnessToLevel(_lastSmoothedRawInputLoudness) >= _noiseReductionThreshold) {
+                audioGateOpen = _audioGate->removeDC(samples, samples, numFrames);
+            } else if (_isNoiseGateEnabled && !_isNoiseReductionAutomatic) {
+                audioGateOpen = false;
             } else {
                 audioGateOpen = _audioGate->removeDC(samples, samples, numFrames);
             }
@@ -1750,6 +1762,24 @@ void AudioClient::setNoiseReduction(bool enable, bool emitSignal) {
     }
 }
 
+void AudioClient::setNoiseReductionAutomatic(bool enable, bool emitSignal) {
+    if (_isNoiseReductionAutomatic != enable) {
+        _isNoiseReductionAutomatic = enable;
+        if (emitSignal) {
+            emit noiseReductionAutomaticChanged(_isNoiseReductionAutomatic);
+        }
+    }
+}
+
+void AudioClient::setNoiseReductionThreshold(float threshold, bool emitSignal) {
+    if (_noiseReductionThreshold != threshold) {
+        _noiseReductionThreshold = threshold;
+        if (emitSignal) {
+            emit noiseReductionThresholdChanged(_noiseReductionThreshold);
+        }
+    }
+}
+
 void AudioClient::setWarnWhenMuted(bool enable, bool emitSignal) {
     if (_warnWhenMuted != enable) {
         _warnWhenMuted = enable;

libraries/audio-client/src/AudioClient.h

@@ -218,6 +218,12 @@ public slots:
     void setNoiseReduction(bool isNoiseGateEnabled, bool emitSignal = true);
     bool isNoiseReductionEnabled() const { return _isNoiseGateEnabled; }
     
+    void setNoiseReductionAutomatic(bool isNoiseGateAutomatic, bool emitSignal = true);
+    bool isNoiseReductionAutomatic() const { return _isNoiseReductionAutomatic; }
+    
+    void setNoiseReductionThreshold(float noiseReductionThreshold, bool emitSignal = true);
+    float noiseReductionThreshold() const { return _noiseReductionThreshold; }
+
     void setWarnWhenMuted(bool isNoiseGateEnabled, bool emitSignal = true);
     bool isWarnWhenMutedEnabled() const { return _warnWhenMuted; }
 
@@ -265,6 +271,8 @@ signals:
     void inputVolumeChanged(float volume);
     void muteToggled(bool muted);
     void noiseReductionChanged(bool noiseReductionEnabled);
+    void noiseReductionAutomaticChanged(bool noiseReductionAutomatic);
+    void noiseReductionThresholdChanged(bool noiseReductionThreshold);
     void warnWhenMutedChanged(bool warnWhenMutedEnabled);
     void acousticEchoCancellationChanged(bool acousticEchoCancellationEnabled);
     void mutedByMixer();
@@ -310,6 +318,8 @@ private:
     friend class CheckDevicesThread;
     friend class LocalInjectorsThread;
 
+    float loudnessToLevel(float loudness);
+
     // background tasks
     void checkDevices();
     void checkPeakValues();
@@ -397,6 +407,8 @@ private:
     bool _shouldEchoLocally{ false };
     bool _shouldEchoToServer{ false };
     bool _isNoiseGateEnabled{ true };
+    bool _isNoiseReductionAutomatic{ true };
+    float _noiseReductionThreshold{ 0.1f };
     bool _warnWhenMuted;
     bool _isAECEnabled{ true };