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Finished audio input DC offset correction

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This commit is contained in:
Philip Rosedale 2014-02-23 19:56:25 -08:00
parent 9b463dd8cf
commit 8c3b18f797
1 changed files with 5 additions and 4 deletions
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9
interface/src/Audio.cpp
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@ -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) {