diff --git a/examples/audioReflectorTools.js b/examples/audioReflectorTools.js
index 3cc6a1a21e..76869de578 100644
--- a/examples/audioReflectorTools.js
+++ b/examples/audioReflectorTools.js
@@ -19,6 +19,8 @@ var reflectiveScale = 100.0;
 var diffusionScale = 100.0;
 var absorptionScale = 100.0;
 var combFilterScale = 50.0;
+var originalScale = 2.0;
+var echoesScale = 2.0;
 
 // these three properties are bound together, if you change one, the others will also change
 var reflectiveRatio = AudioReflector.getReflectiveRatio();
@@ -421,6 +423,84 @@ var absorptionThumb = Overlays.addOverlay("image", {
                     alpha: 1
                 });
 
+var originalY = topY;
+topY += sliderHeight;
+
+var originalLabel = Overlays.addOverlay("text", {
+                    x: 40,
+                    y: originalY,
+                    width: 60,
+                    height: sliderHeight,
+                    color: { red: 0, green: 0, blue: 0},
+                    textColor: { red: 255, green: 255, blue: 255},
+                    topMargin: 6,
+                    leftMargin: 5,
+                    text: "Original\nMix:"
+                });
+
+
+var originalSlider = Overlays.addOverlay("image", {
+                    // alternate form of expressing bounds
+                    bounds: { x: 100, y: originalY, width: 150, height: sliderHeight},
+                    subImage: { x: 46, y: 0, width: 200, height: 71  },
+                    imageURL: "https://s3-us-west-1.amazonaws.com/highfidelity-public/images/slider.png",
+                    color: { red: 255, green: 255, blue: 255},
+                    alpha: 1
+                });
+
+
+var originalMinThumbX = 110;
+var originalMaxThumbX = originalMinThumbX + 110;
+var originalThumbX = originalMinThumbX + ((originalMaxThumbX - originalMinThumbX) * (AudioReflector.getOriginalSourceAttenuation() / originalScale));
+var originalThumb = Overlays.addOverlay("image", {
+                    x: originalThumbX,
+                    y: originalY+9,
+                    width: 18,
+                    height: 17,
+                    imageURL: "https://s3-us-west-1.amazonaws.com/highfidelity-public/images/thumb.png",
+                    color: { red: 128, green: 128, blue: 0},
+                    alpha: 1
+                });
+
+var echoesY = topY;
+topY += sliderHeight;
+
+var echoesLabel = Overlays.addOverlay("text", {
+                    x: 40,
+                    y: echoesY,
+                    width: 60,
+                    height: sliderHeight,
+                    color: { red: 0, green: 0, blue: 0},
+                    textColor: { red: 255, green: 255, blue: 255},
+                    topMargin: 6,
+                    leftMargin: 5,
+                    text: "Echoes\nMix:"
+                });
+
+
+var echoesSlider = Overlays.addOverlay("image", {
+                    // alternate form of expressing bounds
+                    bounds: { x: 100, y: echoesY, width: 150, height: sliderHeight},
+                    subImage: { x: 46, y: 0, width: 200, height: 71  },
+                    imageURL: "https://s3-us-west-1.amazonaws.com/highfidelity-public/images/slider.png",
+                    color: { red: 255, green: 255, blue: 255},
+                    alpha: 1
+                });
+
+
+var echoesMinThumbX = 110;
+var echoesMaxThumbX = echoesMinThumbX + 110;
+var echoesThumbX = echoesMinThumbX + ((echoesMaxThumbX - echoesMinThumbX) * (AudioReflector.getEchoesAttenuation() / echoesScale));
+var echoesThumb = Overlays.addOverlay("image", {
+                    x: echoesThumbX,
+                    y: echoesY+9,
+                    width: 18,
+                    height: 17,
+                    imageURL: "https://s3-us-west-1.amazonaws.com/highfidelity-public/images/thumb.png",
+                    color: { red: 128, green: 128, blue: 0},
+                    alpha: 1
+                });
+
 
 // When our script shuts down, we should clean up all of our overlays
 function scriptEnding() {
@@ -460,6 +540,14 @@ function scriptEnding() {
     Overlays.deleteOverlay(absorptionThumb);
     Overlays.deleteOverlay(absorptionSlider);
 
+    Overlays.deleteOverlay(echoesLabel);
+    Overlays.deleteOverlay(echoesThumb);
+    Overlays.deleteOverlay(echoesSlider);
+
+    Overlays.deleteOverlay(originalLabel);
+    Overlays.deleteOverlay(originalThumb);
+    Overlays.deleteOverlay(originalSlider);
+
 }
 Script.scriptEnding.connect(scriptEnding);
 
@@ -483,6 +571,8 @@ var movingSliderLocalFactor = false;
 var movingSliderReflective = false;
 var movingSliderDiffusion = false;
 var movingSliderAbsorption = false;
+var movingSliderOriginal = false;
+var movingSliderEchoes = false;
 
 var thumbClickOffsetX = 0;
 function mouseMoveEvent(event) {
@@ -546,7 +636,6 @@ function mouseMoveEvent(event) {
         var combFilter = ((newThumbX - combFilterMinThumbX) / (combFilterMaxThumbX - combFilterMinThumbX)) * combFilterScale;
         AudioReflector.setCombFilterWindow(combFilter);
     }
-
     if (movingSliderLocalFactor) {
         newThumbX = event.x - thumbClickOffsetX;
         if (newThumbX < localFactorMinThumbX) {
@@ -598,6 +687,30 @@ function mouseMoveEvent(event) {
         var diffusion = ((newThumbX - diffusionMinThumbX) / (diffusionMaxThumbX - diffusionMinThumbX)) * diffusionScale;
         setDiffusionRatio(diffusion);
     }
+    if (movingSliderEchoes) {
+        newThumbX = event.x - thumbClickOffsetX;
+        if (newThumbX < echoesMinThumbX) {
+            newThumbX = echoesMminThumbX;
+        }
+        if (newThumbX > echoesMaxThumbX) {
+            newThumbX = echoesMaxThumbX;
+        }
+        Overlays.editOverlay(echoesThumb, { x: newThumbX } );
+        var echoes = ((newThumbX - echoesMinThumbX) / (echoesMaxThumbX - echoesMinThumbX)) * echoesScale;
+        AudioReflector.setEchoesAttenuation(echoes);
+    }
+    if (movingSliderOriginal) {
+        newThumbX = event.x - thumbClickOffsetX;
+        if (newThumbX < originalMinThumbX) {
+            newThumbX = originalMminThumbX;
+        }
+        if (newThumbX > originalMaxThumbX) {
+            newThumbX = originalMaxThumbX;
+        }
+        Overlays.editOverlay(originalThumb, { x: newThumbX } );
+        var original = ((newThumbX - originalMinThumbX) / (originalMaxThumbX - originalMinThumbX)) * originalScale;
+        AudioReflector.setOriginalSourceAttenuation(original);
+    }
 
 }
 
@@ -640,7 +753,16 @@ function mousePressEvent(event) {
         movingSliderReflective = true;
         thumbClickOffsetX = event.x - reflectiveThumbX;
     }
+    if (clickedOverlay == originalThumb) {
+        movingSliderOriginal = true;
+        thumbClickOffsetX = event.x - originalThumbX;
+    }
+    if (clickedOverlay == echoesThumb) {
+        movingSliderEchoes = true;
+        thumbClickOffsetX = event.x - echoesThumbX;
+    }
 }
+
 function mouseReleaseEvent(event) {
     if (movingSliderDelay) {
         movingSliderDelay = false;
@@ -672,14 +794,12 @@ function mouseReleaseEvent(event) {
         AudioReflector.setCombFilterWindow(combFilter);
         combFilterThumbX = newThumbX;
     }
-
     if (movingSliderLocalFactor) {
         movingSliderLocalFactor = false;
         var localFactor = ((newThumbX - localFactorMinThumbX) / (localFactorMaxThumbX - localFactorMinThumbX)) * localFactorScale;
         AudioReflector.setLocalAudioAttenuationFactor(localFactor);
         localFactorThumbX = newThumbX;
     }
-
     if (movingSliderReflective) {
         movingSliderReflective = false;
         var reflective = ((newThumbX - reflectiveMinThumbX) / (reflectiveMaxThumbX - reflectiveMinThumbX)) * reflectiveScale;
@@ -687,7 +807,6 @@ function mouseReleaseEvent(event) {
         reflectiveThumbX = newThumbX;
         updateRatioSliders();
     }
-
     if (movingSliderDiffusion) {
         movingSliderDiffusion = false;
         var diffusion = ((newThumbX - diffusionMinThumbX) / (diffusionMaxThumbX - diffusionMinThumbX)) * diffusionScale;
@@ -695,7 +814,6 @@ function mouseReleaseEvent(event) {
         diffusionThumbX = newThumbX;
         updateRatioSliders();
     }
-
     if (movingSliderAbsorption) {
         movingSliderAbsorption = false;
         var absorption = ((newThumbX - absorptionMinThumbX) / (absorptionMaxThumbX - absorptionMinThumbX)) * absorptionScale;
@@ -703,6 +821,18 @@ function mouseReleaseEvent(event) {
         absorptionThumbX = newThumbX;
         updateRatioSliders();
     }
+    if (movingSliderEchoes) {
+        movingSliderEchoes = false;
+        var echoes = ((newThumbX - echoesMinThumbX) / (echoesMaxThumbX - echoesMinThumbX)) * echoesScale;
+        AudioReflector.setEchoesAttenuation(echoes);
+        echoesThumbX = newThumbX;
+    }
+    if (movingSliderOriginal) {
+        movingSliderOriginal = false;
+        var original = ((newThumbX - originalMinThumbX) / (originalMaxThumbX - originalMinThumbX)) * originalScale;
+        AudioReflector.setOriginalSourceAttenuation(original);
+        originalThumbX = newThumbX;
+    }
 }
 
 Controller.mouseMoveEvent.connect(mouseMoveEvent);
diff --git a/interface/src/Application.cpp b/interface/src/Application.cpp
index bd7a82b439..7480b16334 100644
--- a/interface/src/Application.cpp
+++ b/interface/src/Application.cpp
@@ -1679,8 +1679,12 @@ void Application::init() {
     _audioReflector.setMyAvatar(getAvatar());
     _audioReflector.setVoxels(_voxels.getTree());
     _audioReflector.setAudio(getAudio());
+    _audioReflector.setAvatarManager(&_avatarManager);
+
     connect(getAudio(), &Audio::processInboundAudio, &_audioReflector, &AudioReflector::processInboundAudio,Qt::DirectConnection);
     connect(getAudio(), &Audio::processLocalAudio, &_audioReflector, &AudioReflector::processLocalAudio,Qt::DirectConnection);
+    connect(getAudio(), &Audio::preProcessOriginalInboundAudio, &_audioReflector, 
+                        &AudioReflector::preProcessOriginalInboundAudio,Qt::DirectConnection);
 
     // save settings when avatar changes
     connect(_myAvatar, &MyAvatar::transformChanged, this, &Application::bumpSettings);
diff --git a/interface/src/Audio.cpp b/interface/src/Audio.cpp
index daa7c036eb..830e2fe69b 100644
--- a/interface/src/Audio.cpp
+++ b/interface/src/Audio.cpp
@@ -784,6 +784,7 @@ void Audio::processReceivedAudio(const QByteArray& audioByteArray) {
                 _ringBuffer.readSamples((int16_t*)buffer.data(), numNetworkOutputSamples);
                 // Accumulate direct transmission of audio from sender to receiver
                 if (Menu::getInstance()->isOptionChecked(MenuOption::AudioSpatialProcessingIncludeOriginal)) {
+                    emit preProcessOriginalInboundAudio(sampleTime, buffer, _desiredOutputFormat);
                     addSpatialAudioToBuffer(sampleTime, buffer, numNetworkOutputSamples);
                 }
 
diff --git a/interface/src/Audio.h b/interface/src/Audio.h
index 3b19d98146..96def43dd2 100644
--- a/interface/src/Audio.h
+++ b/interface/src/Audio.h
@@ -99,6 +99,7 @@ public slots:
 
 signals:
     bool muteToggled();
+    void preProcessOriginalInboundAudio(unsigned int sampleTime, QByteArray& samples, const QAudioFormat& format);
     void processInboundAudio(unsigned int sampleTime, const QByteArray& samples, const QAudioFormat& format);
     void processLocalAudio(unsigned int sampleTime, const QByteArray& samples, const QAudioFormat& format);
     
diff --git a/interface/src/AudioReflector.cpp b/interface/src/AudioReflector.cpp
index 52558f1d59..67b6120354 100644
--- a/interface/src/AudioReflector.cpp
+++ b/interface/src/AudioReflector.cpp
@@ -25,6 +25,8 @@ const float SLIGHTLY_SHORT = 0.999f; // slightly inside the distance so we're on
 
 const float DEFAULT_ABSORPTION_RATIO = 0.125; // 12.5% is absorbed
 const float DEFAULT_DIFFUSION_RATIO = 0.125; // 12.5% is diffused
+const float DEFAULT_ORIGINAL_ATTENUATION = 1.0f;
+const float DEFAULT_ECHO_ATTENUATION = 1.0f;
 
 AudioReflector::AudioReflector(QObject* parent) : 
     QObject(parent),
@@ -36,6 +38,8 @@ AudioReflector::AudioReflector(QObject* parent) :
     _diffusionFanout(DEFAULT_DIFFUSION_FANOUT),
     _absorptionRatio(DEFAULT_ABSORPTION_RATIO),
     _diffusionRatio(DEFAULT_DIFFUSION_RATIO),
+    _originalSourceAttenuation(DEFAULT_ORIGINAL_ATTENUATION),
+    _allEchoesAttenuation(DEFAULT_ECHO_ATTENUATION),
     _withDiffusion(false),
     _lastPreDelay(DEFAULT_PRE_DELAY),
     _lastSoundMsPerMeter(DEFAULT_MS_DELAY_PER_METER),
@@ -43,20 +47,29 @@ AudioReflector::AudioReflector(QObject* parent) :
     _lastLocalAudioAttenuationFactor(DEFAULT_LOCAL_ATTENUATION_FACTOR),
     _lastDiffusionFanout(DEFAULT_DIFFUSION_FANOUT),
     _lastAbsorptionRatio(DEFAULT_ABSORPTION_RATIO),
-    _lastDiffusionRatio(DEFAULT_DIFFUSION_RATIO)
+    _lastDiffusionRatio(DEFAULT_DIFFUSION_RATIO),
+    _lastDontDistanceAttenuate(false),
+    _lastAlternateDistanceAttenuate(false)
 {
     _reflections = 0;
     _diffusionPathCount = 0;
-    _averageAttenuation = 0.0f;
-    _maxAttenuation = 0.0f;
-    _minAttenuation = 0.0f;
-    _averageDelay = 0;
-    _maxDelay = 0;
-    _minDelay = 0;
+    _averageAttenuationOfficial = _averageAttenuation = 0.0f;
+    _maxAttenuationOfficial = _maxAttenuation = 0.0f;
+    _minAttenuationOfficial = _minAttenuation = 0.0f;
+    _averageDelayOfficial = _averageDelay = 0;
+    _maxDelayOfficial = _maxDelay = 0;
+    _minDelayOfficial = _minDelay = 0;
+    _inboundEchoesCount = 0;
+    _inboundEchoesSuppressedCount = 0;
+    _localEchoesCount = 0;
+    _localEchoesSuppressedCount = 0;
 }
 
 bool AudioReflector::haveAttributesChanged() {
     bool withDiffusion = Menu::getInstance()->isOptionChecked(MenuOption::AudioSpatialProcessingWithDiffusions);
+    bool dontDistanceAttenuate = Menu::getInstance()->isOptionChecked(MenuOption::AudioSpatialProcessingDontDistanceAttenuate);
+    bool alternateDistanceAttenuate = Menu::getInstance()->isOptionChecked(
+                                                MenuOption::AudioSpatialProcessingAlternateDistanceAttenuate);
     
     bool attributesChange = (_withDiffusion != withDiffusion
         || _lastPreDelay != _preDelay
@@ -64,7 +77,9 @@ bool AudioReflector::haveAttributesChanged() {
         || _lastDistanceAttenuationScalingFactor != _distanceAttenuationScalingFactor
         || _lastDiffusionFanout != _diffusionFanout
         || _lastAbsorptionRatio != _absorptionRatio
-        || _lastDiffusionRatio != _diffusionRatio);
+        || _lastDiffusionRatio != _diffusionRatio
+        || _lastDontDistanceAttenuate != dontDistanceAttenuate
+        || _lastAlternateDistanceAttenuate != alternateDistanceAttenuate);
 
     if (attributesChange) {
         _withDiffusion = withDiffusion;
@@ -74,6 +89,8 @@ bool AudioReflector::haveAttributesChanged() {
         _lastDiffusionFanout = _diffusionFanout;
         _lastAbsorptionRatio = _absorptionRatio;
         _lastDiffusionRatio = _diffusionRatio;
+        _lastDontDistanceAttenuate = dontDistanceAttenuate;
+        _lastAlternateDistanceAttenuate = alternateDistanceAttenuate;
     }
     
     return attributesChange;
@@ -107,19 +124,47 @@ float AudioReflector::getDelayFromDistance(float distance) {
 
 // attenuation = from the Audio Mixer
 float AudioReflector::getDistanceAttenuationCoefficient(float distance) {
-    const float DISTANCE_SCALE = 2.5f;
-    const float GEOMETRIC_AMPLITUDE_SCALAR = 0.3f;
-    const float DISTANCE_LOG_BASE = 2.5f;
-    const float DISTANCE_SCALE_LOG = logf(DISTANCE_SCALE) / logf(DISTANCE_LOG_BASE);
+
+
+    bool doDistanceAttenuation = !Menu::getInstance()->isOptionChecked(
+                                            MenuOption::AudioSpatialProcessingDontDistanceAttenuate);
+
+    bool originalFormula = !Menu::getInstance()->isOptionChecked(
+                                            MenuOption::AudioSpatialProcessingAlternateDistanceAttenuate);
     
-    float distanceSquareToSource = distance * distance;
+    
+    float distanceCoefficient = 1.0f;
+    
+    if (doDistanceAttenuation) {
+    
+        if (originalFormula) {
+            const float DISTANCE_SCALE = 2.5f;
+            const float GEOMETRIC_AMPLITUDE_SCALAR = 0.3f;
+            const float DISTANCE_LOG_BASE = 2.5f;
+            const float DISTANCE_SCALE_LOG = logf(DISTANCE_SCALE) / logf(DISTANCE_LOG_BASE);
+    
+            float distanceSquareToSource = distance * distance;
 
-    // calculate the distance coefficient using the distance to this node
-    float distanceCoefficient = powf(GEOMETRIC_AMPLITUDE_SCALAR,
-                                     DISTANCE_SCALE_LOG +
-                                     (0.5f * logf(distanceSquareToSource) / logf(DISTANCE_LOG_BASE)) - 1);
-
-    distanceCoefficient = std::min(1.0f, distanceCoefficient * getDistanceAttenuationScalingFactor());
+            // calculate the distance coefficient using the distance to this node
+            distanceCoefficient = powf(GEOMETRIC_AMPLITUDE_SCALAR,
+                                             DISTANCE_SCALE_LOG +
+                                             (0.5f * logf(distanceSquareToSource) / logf(DISTANCE_LOG_BASE)) - 1);
+            distanceCoefficient = std::min(1.0f, distanceCoefficient * getDistanceAttenuationScalingFactor());
+        } else {
+        
+            // From Fred: If we wanted something that would produce a tail that could go up to 5 seconds in a 
+            // really big room, that would suggest the sound still has to be in the audible after traveling about 
+            // 1500 meters.  If it’s a sound of average volume, we probably have about 30 db, or 5 base2 orders 
+            // of magnitude we can drop down before the sound becomes inaudible. (That’s approximate headroom 
+            // based on a few sloppy assumptions.) So we could try a factor like 1 / (2^(D/300)) for starters.
+            // 1 / (2^(D/300))
+            const float DISTANCE_BASE = 2.0f;
+            const float DISTANCE_DENOMINATOR = 300.0f;
+            const float DISTANCE_NUMERATOR = 300.0f;
+            distanceCoefficient = DISTANCE_NUMERATOR / powf(DISTANCE_BASE, (distance / DISTANCE_DENOMINATOR ));
+            distanceCoefficient = std::min(1.0f, distanceCoefficient * getDistanceAttenuationScalingFactor());
+        }
+    }
     
     return distanceCoefficient;
 }
@@ -236,11 +281,13 @@ void AudioReflector::injectAudiblePoint(AudioSource source, const AudiblePoint&
                 rightSample = originalSamplesData[(sample * NUMBER_OF_CHANNELS) + 1];
             }
 
-            attenuatedLeftSamplesData[sample * NUMBER_OF_CHANNELS] = leftSample * leftEarAttenuation;
+            attenuatedLeftSamplesData[sample * NUMBER_OF_CHANNELS] = 
+                        leftSample * leftEarAttenuation * _allEchoesAttenuation;
             attenuatedLeftSamplesData[sample * NUMBER_OF_CHANNELS + 1] = 0;
 
             attenuatedRightSamplesData[sample * NUMBER_OF_CHANNELS] = 0;
-            attenuatedRightSamplesData[sample * NUMBER_OF_CHANNELS + 1] = rightSample * rightEarAttenuation;
+            attenuatedRightSamplesData[sample * NUMBER_OF_CHANNELS + 1] = 
+                        rightSample * rightEarAttenuation * _allEchoesAttenuation;
         }
         
         // now inject the attenuated array with the appropriate delay
@@ -249,9 +296,25 @@ void AudioReflector::injectAudiblePoint(AudioSource source, const AudiblePoint&
     
         _audio->addSpatialAudioToBuffer(sampleTimeLeft, attenuatedLeftSamples, totalNumberOfSamples);
         _audio->addSpatialAudioToBuffer(sampleTimeRight, attenuatedRightSamples, totalNumberOfSamples);
+        
+        _injectedEchoes++;
     }
 }
 
+
+void AudioReflector::preProcessOriginalInboundAudio(unsigned int sampleTime, 
+                                QByteArray& samples, const QAudioFormat& format) {
+                                
+    if (_originalSourceAttenuation != 1.0f) {
+        int numberOfSamples = (samples.size() / sizeof(int16_t));
+        int16_t* sampleData = (int16_t*)samples.data();
+        for (int i = 0; i < numberOfSamples; i++) {
+            sampleData[i] = sampleData[i] * _originalSourceAttenuation;
+        }
+    }
+
+}
+
 void AudioReflector::processLocalAudio(unsigned int sampleTime, const QByteArray& samples, const QAudioFormat& format) {
     if (Menu::getInstance()->isOptionChecked(MenuOption::AudioSpatialProcessingProcessLocalAudio)) {
         const int NUM_CHANNELS_INPUT = 1;
@@ -272,6 +335,8 @@ void AudioReflector::processLocalAudio(unsigned int sampleTime, const QByteArray
             _localAudioDelays.clear();
             _localEchoesSuppressed.clear();
             echoAudio(LOCAL_AUDIO, sampleTime, stereoInputData, outputFormat);
+            _localEchoesCount = _localAudioDelays.size();
+            _localEchoesSuppressedCount = _localEchoesSuppressed.size();
         }
     }
 }
@@ -280,9 +345,13 @@ void AudioReflector::processInboundAudio(unsigned int sampleTime, const QByteArr
     _inboundAudioDelays.clear();
     _inboundEchoesSuppressed.clear();
     echoAudio(INBOUND_AUDIO, sampleTime, samples, format);
+    _inboundEchoesCount = _inboundAudioDelays.size();
+    _inboundEchoesSuppressedCount = _inboundEchoesSuppressed.size();
 }
 
 void AudioReflector::echoAudio(AudioSource source, unsigned int sampleTime, const QByteArray& samples, const QAudioFormat& format) {
+    QMutexLocker locker(&_mutex);
+
     _maxDelay = 0;
     _maxAttenuation = 0.0f;
     _minDelay = std::numeric_limits<int>::max();
@@ -292,14 +361,20 @@ void AudioReflector::echoAudio(AudioSource source, unsigned int sampleTime, cons
     _totalAttenuation = 0.0f;
     _attenuationCount = 0;
 
-    QMutexLocker locker(&_mutex);
-
     // depending on if we're processing local or external audio, pick the correct points vector
     QVector<AudiblePoint>& audiblePoints = source == INBOUND_AUDIO ? _inboundAudiblePoints : _localAudiblePoints;
 
+    int injectCalls = 0;
+    _injectedEchoes = 0;
     foreach(const AudiblePoint& audiblePoint, audiblePoints) {
+        injectCalls++;
         injectAudiblePoint(source, audiblePoint, samples, sampleTime, format.sampleRate());
     }
+    
+    /*
+    qDebug() << "injectCalls=" << injectCalls;
+    qDebug() << "_injectedEchoes=" << _injectedEchoes;
+    */
 
     _averageDelay = _delayCount == 0 ? 0 : _totalDelay / _delayCount;
     _averageAttenuation = _attenuationCount == 0 ? 0 : _totalAttenuation / _attenuationCount;
@@ -308,6 +383,14 @@ void AudioReflector::echoAudio(AudioSource source, unsigned int sampleTime, cons
         _minDelay = 0.0f;
         _minAttenuation = 0.0f;
     }
+    
+    _maxDelayOfficial = _maxDelay;
+    _minDelayOfficial = _minDelay;
+    _maxAttenuationOfficial = _maxAttenuation;
+    _minAttenuationOfficial = _minAttenuation;
+    _averageDelayOfficial = _averageDelay;
+    _averageAttenuationOfficial = _averageAttenuation;
+
 }
 
 void AudioReflector::drawVector(const glm::vec3& start, const glm::vec3& end, const glm::vec3& color) {
@@ -359,6 +442,19 @@ void AudioReflector::addAudioPath(AudioSource source, const glm::vec3& origin, c
     audioPaths.push_back(path);
 }
 
+// NOTE: This is a prototype of an eventual utility that will identify the speaking sources for the inbound audio
+// stream. It's not currently called but will be added soon.
+void AudioReflector::identifyAudioSources() {
+    // looking for audio sources....
+    foreach (const AvatarSharedPointer& avatarPointer, _avatarManager->getAvatarHash()) {
+        Avatar* avatar = static_cast<Avatar*>(avatarPointer.data());
+        if (!avatar->isInitialized()) {
+            continue;
+        }
+        qDebug() << "avatar["<< avatar <<"] loudness:" <<  avatar->getAudioLoudness();
+    }
+}
+
 void AudioReflector::calculateAllReflections() {
     // only recalculate when we've moved, or if the attributes have changed
     // TODO: what about case where new voxels are added in front of us???
diff --git a/interface/src/AudioReflector.h b/interface/src/AudioReflector.h
index 2408b70a96..cd5aaad276 100644
--- a/interface/src/AudioReflector.h
+++ b/interface/src/AudioReflector.h
@@ -15,6 +15,7 @@
 
 #include "Audio.h"
 #include "avatar/MyAvatar.h"
+#include "avatar/AvatarManager.h"
 
 enum AudioSource {
     LOCAL_AUDIO,
@@ -69,25 +70,27 @@ public:
     void setVoxels(VoxelTree* voxels) { _voxels = voxels; }
     void setMyAvatar(MyAvatar* myAvatar) { _myAvatar = myAvatar; }
     void setAudio(Audio* audio) { _audio = audio; }
+    void setAvatarManager(AvatarManager* avatarManager) { _avatarManager = avatarManager; }
 
     void render(); /// must be called in the application render loop
     
+    void preProcessOriginalInboundAudio(unsigned int sampleTime, QByteArray& samples, const QAudioFormat& format);
     void processInboundAudio(unsigned int sampleTime, const QByteArray& samples, const QAudioFormat& format);
     void processLocalAudio(unsigned int sampleTime, const QByteArray& samples, const QAudioFormat& format);
 
 public slots:
     // statistics
     int getReflections() const { return _reflections; }
-    float getAverageDelayMsecs() const { return _averageDelay; }
-    float getAverageAttenuation() const { return _averageAttenuation; }
-    float getMaxDelayMsecs() const { return _maxDelay; }
-    float getMaxAttenuation() const { return _maxAttenuation; }
-    float getMinDelayMsecs() const { return _minDelay; }
-    float getMinAttenuation() const { return _minAttenuation; }
+    float getAverageDelayMsecs() const { return _averageDelayOfficial; }
+    float getAverageAttenuation() const { return _averageAttenuationOfficial; }
+    float getMaxDelayMsecs() const { return _maxDelayOfficial; }
+    float getMaxAttenuation() const { return _maxAttenuationOfficial; }
+    float getMinDelayMsecs() const { return _minDelayOfficial; }
+    float getMinAttenuation() const { return _minAttenuationOfficial; }
     float getDelayFromDistance(float distance);
     int getDiffusionPathCount() const { return _diffusionPathCount; }
-    int getEchoesInjected() const { return _inboundAudioDelays.size() + _localAudioDelays.size(); }
-    int getEchoesSuppressed() const { return _inboundEchoesSuppressed.size() + _localEchoesSuppressed.size(); }
+    int getEchoesInjected() const { return _inboundEchoesCount + _localEchoesCount; }
+    int getEchoesSuppressed() const { return _inboundEchoesSuppressedCount + _localEchoesSuppressedCount; }
 
     /// ms of delay added to all echos
     float getPreDelay() const { return _preDelay; }
@@ -126,12 +129,19 @@ public slots:
     float getReflectiveRatio() const { return (1.0f - (_absorptionRatio + _diffusionRatio)); }
     void setReflectiveRatio(float ratio);
 
+    // wet/dry mix - these don't affect any reflection calculations, only the final mix volumes
+    float getOriginalSourceAttenuation() const { return _originalSourceAttenuation; }
+    void setOriginalSourceAttenuation(float value) { _originalSourceAttenuation = value; }
+    float getEchoesAttenuation() const { return _allEchoesAttenuation; }
+    void setEchoesAttenuation(float value) { _allEchoesAttenuation = value; }
+
 signals:
     
 private:
     VoxelTree* _voxels; // used to access voxel scene
     MyAvatar* _myAvatar; // access to listener
     Audio* _audio; // access to audio API
+    AvatarManager* _avatarManager; // access to avatar manager API
 
     // Helpers for drawing
     void drawVector(const glm::vec3& start, const glm::vec3& end, const glm::vec3& color);
@@ -147,11 +157,18 @@ private:
     float _averageDelay;
     float _maxDelay;
     float _minDelay;
+    float _averageDelayOfficial;
+    float _maxDelayOfficial;
+    float _minDelayOfficial;
     int _attenuationCount;
     float _totalAttenuation;
     float _averageAttenuation;
     float _maxAttenuation;
     float _minAttenuation;
+    float _averageAttenuationOfficial;
+    float _maxAttenuationOfficial;
+    float _minAttenuationOfficial;
+
 
     glm::vec3 _listenerPosition;
     glm::vec3 _origin;
@@ -161,11 +178,15 @@ private:
     QVector<AudiblePoint> _inboundAudiblePoints; /// the audible points that have been calculated from the inbound audio paths
     QMap<float, float> _inboundAudioDelays; /// delay times for currently injected audio points
     QVector<float> _inboundEchoesSuppressed; /// delay times for currently injected audio points
+    int _inboundEchoesCount;
+    int _inboundEchoesSuppressedCount;
 
     QVector<AudioPath*> _localAudioPaths; /// audio paths we're processing for local audio
     QVector<AudiblePoint> _localAudiblePoints; /// the audible points that have been calculated from the local audio paths
     QMap<float, float> _localAudioDelays; /// delay times for currently injected audio points
     QVector<float> _localEchoesSuppressed; /// delay times for currently injected audio points
+    int _localEchoesCount;
+    int _localEchoesSuppressedCount;
 
     // adds a sound source to begin an audio path trace, these can be the initial sound sources with their directional properties,
     // as well as diffusion sound sources
@@ -182,6 +203,7 @@ private:
     void calculateAllReflections();
     int countDiffusionPaths();
     glm::vec3 getFaceNormal(BoxFace face);
+    void identifyAudioSources();
 
     void injectAudiblePoint(AudioSource source, const AudiblePoint& audiblePoint, const QByteArray& samples, unsigned int sampleTime, int sampleRate);
     void echoAudio(AudioSource source, unsigned int sampleTime, const QByteArray& samples, const QAudioFormat& format);
@@ -197,13 +219,16 @@ private:
     float _distanceAttenuationScalingFactor;
     float _localAudioAttenuationFactor;
     float _combFilterWindow;
-
     int _diffusionFanout; // number of points of diffusion from each reflection point
 
     // all elements have the same material for now...
     float _absorptionRatio;
     float _diffusionRatio;
     float _reflectiveRatio;
+    
+    // wet/dry mix - these don't affect any reflection calculations, only the final mix volumes
+    float _originalSourceAttenuation; /// each sample of original signal will be multiplied by this
+    float _allEchoesAttenuation; /// each sample of all echo signals will be multiplied by this
 
     // remember the last known values at calculation    
     bool haveAttributesChanged();
@@ -216,6 +241,10 @@ private:
     int _lastDiffusionFanout;
     float _lastAbsorptionRatio;
     float _lastDiffusionRatio;
+    bool _lastDontDistanceAttenuate;
+    bool _lastAlternateDistanceAttenuate;
+    
+    int _injectedEchoes;
 };
 
 
diff --git a/interface/src/Menu.cpp b/interface/src/Menu.cpp
index 85c3d5b0c3..b05e5c91bc 100644
--- a/interface/src/Menu.cpp
+++ b/interface/src/Menu.cpp
@@ -429,6 +429,14 @@ Menu::Menu() :
                                            Qt::CTRL | Qt::SHIFT | Qt::Key_A,
                                            true);
 
+    addCheckableActionToQMenuAndActionHash(spatialAudioMenu, MenuOption::AudioSpatialProcessingDontDistanceAttenuate,
+                                           Qt::CTRL | Qt::SHIFT | Qt::Key_Y,
+                                           false);
+
+    addCheckableActionToQMenuAndActionHash(spatialAudioMenu, MenuOption::AudioSpatialProcessingAlternateDistanceAttenuate,
+                                           Qt::CTRL | Qt::SHIFT | Qt::Key_U,
+                                           false);
+
     addActionToQMenuAndActionHash(developerMenu, MenuOption::PasteToVoxel,
                 Qt::CTRL | Qt::SHIFT | Qt::Key_V,
                 this,
diff --git a/interface/src/Menu.h b/interface/src/Menu.h
index a62f54b0c6..c17c9cc507 100644
--- a/interface/src/Menu.h
+++ b/interface/src/Menu.h
@@ -268,6 +268,10 @@ namespace MenuOption {
     const QString AudioSpatialProcessingSlightlyRandomSurfaces = "Slightly Random Surfaces";
     const QString AudioSpatialProcessingStereoSource = "Stereo Source";
     const QString AudioSpatialProcessingWithDiffusions = "With Diffusions";
+    const QString AudioSpatialProcessingDontDistanceAttenuate = "Don't calculate distance attenuation";
+    const QString AudioSpatialProcessingAlternateDistanceAttenuate = "Alternate distance attenuation";
+    
+    
 
     const QString Avatars = "Avatars";
     const QString Bandwidth = "Bandwidth Display";
diff --git a/interface/src/ui/Stats.cpp b/interface/src/ui/Stats.cpp
index 64616cbdf8..a2d615e04d 100644
--- a/interface/src/ui/Stats.cpp
+++ b/interface/src/ui/Stats.cpp
@@ -343,7 +343,7 @@ void Stats::display(
 
     lines = _expanded ? 12 : 3;
     if (_expanded && Menu::getInstance()->isOptionChecked(MenuOption::AudioSpatialProcessing)) {
-        lines += 8; // spatial audio processing adds 1 spacing line and 7 extra lines of info
+        lines += 9; // spatial audio processing adds 1 spacing line and 8 extra lines of info
     }
 
     drawBackground(backgroundColor, horizontalOffset, 0, glWidget->width() - horizontalOffset, lines * STATS_PELS_PER_LINE + 10);
@@ -540,11 +540,19 @@ void Stats::display(
                 
         verticalOffset += STATS_PELS_PER_LINE;
         drawText(horizontalOffset, verticalOffset, 0.10f, 0.f, 2.f, reflectionsStatus, color);
+        
+        bool distanceAttenuationDisabled = Menu::getInstance()->isOptionChecked(
+                                                        MenuOption::AudioSpatialProcessingDontDistanceAttenuate);
 
-        sprintf(reflectionsStatus, "Attenuation: average %5.3f, max %5.3f, min %5.3f, Factor: %5.3f", 
+        bool alternateDistanceAttenuationEnabled = Menu::getInstance()->isOptionChecked(
+                                                        MenuOption::AudioSpatialProcessingAlternateDistanceAttenuate);
+
+        sprintf(reflectionsStatus, "Attenuation: average %5.3f, max %5.3f, min %5.3f, %s: %5.3f", 
                 audioReflector->getAverageAttenuation(),
                 audioReflector->getMaxAttenuation(),
                 audioReflector->getMinAttenuation(),
+                (distanceAttenuationDisabled ? "Distance Factor [DISABLED]" : 
+                    alternateDistanceAttenuationEnabled ? "Distance Factor [ALTERNATE]" : "Distance Factor [STANARD]"),
                 audioReflector->getDistanceAttenuationScalingFactor());
                 
         verticalOffset += STATS_PELS_PER_LINE;
@@ -585,6 +593,13 @@ void Stats::display(
         verticalOffset += STATS_PELS_PER_LINE;
         drawText(horizontalOffset, verticalOffset, 0.10f, 0.f, 2.f, reflectionsStatus, color);
 
+        sprintf(reflectionsStatus, "Wet/Dry Mix: Original: %5.3f Echoes: %5.3f", 
+                    audioReflector->getOriginalSourceAttenuation(), 
+                    audioReflector->getEchoesAttenuation());
+                
+        verticalOffset += STATS_PELS_PER_LINE;
+        drawText(horizontalOffset, verticalOffset, 0.10f, 0.f, 2.f, reflectionsStatus, color);
+
     }
 
 }