From 8c3b18f79707627d0addfe76724842ad3c0b23f7 Mon Sep 17 00:00:00 2001
From: Philip Rosedale <philip@highfidelity.io>
Date: Sun, 23 Feb 2014 19:56:25 -0800
Subject: [PATCH] Finished audio input DC offset correction

---
 interface/src/Audio.cpp | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/interface/src/Audio.cpp b/interface/src/Audio.cpp
index fd8922aa41..1089eeab70 100644
--- a/interface/src/Audio.cpp
+++ b/interface/src/Audio.cpp
@@ -389,9 +389,10 @@ void Audio::handleAudioInput() {
             float measuredDcOffset = 0.f;
             
             for (int i = 0; i < NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL; i++) {
+                measuredDcOffset += monoAudioSamples[i];
+                monoAudioSamples[i] -= (int16_t) _dcOffset;
                 thisSample = fabsf(monoAudioSamples[i]);
                 loudness += thisSample;
-                measuredDcOffset += monoAudioSamples[i];
                 //  Noise Reduction:  Count peaks above the average loudness
                 if (thisSample > (_noiseGateMeasuredFloor * NOISE_GATE_HEIGHT)) {
                     samplesOverNoiseGate++;
@@ -406,8 +407,8 @@ void Audio::handleAudioInput() {
                 _dcOffset = DC_OFFSET_AVERAGING * _dcOffset + (1.f - DC_OFFSET_AVERAGING) * measuredDcOffset;
             }
             
-            //qDebug("DC = %.1f", _dcOffset);
-            _lastInputLoudness = fabs(loudness / NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL - _dcOffset);
+            //
+            _lastInputLoudness = fabs(loudness / NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL);
             
             float averageOfAllSampleFrames = 0.f;
             _noiseSampleFrames[_noiseGateSampleCounter++] = _lastInputLoudness;
@@ -428,7 +429,7 @@ void Audio::handleAudioInput() {
                 averageOfAllSampleFrames /= NUMBER_OF_NOISE_SAMPLE_FRAMES;
                 _noiseGateMeasuredFloor = smallestSample;
                 _noiseGateSampleCounter = 0;
-                qDebug("smallest sample = %.1f, avg of all = %.1f",  _noiseGateMeasuredFloor, averageOfAllSampleFrames);
+
             }
 
             if (_noiseGateEnabled) {