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don't use a trailing average for loudness

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Stephen Birarda 2014-03-21 11:42:02 -07:00
parent 6e41d93e0a
commit 1580896ec4
1 changed files with 1 additions and 10 deletions
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11
libraries/audio/src/AudioRingBuffer.cpp
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@ -67,16 +67,7 @@ void AudioRingBuffer::updateAverageLoudnessForBoundarySamples(int numSamples) {
nextLoudness /= numSamples; nextLoudness /= numSamples;
nextLoudness /= MAX_SAMPLE_VALUE; nextLoudness /= MAX_SAMPLE_VALUE;
const int TRAILING_AVERAGE_FRAMES = 100; _averageLoudness = nextLoudness;
const float CURRENT_FRAME_RATIO = 1.0f / TRAILING_AVERAGE_FRAMES;
const float PREVIOUS_FRAMES_RATIO = 1 - CURRENT_FRAME_RATIO;
const float LOUDNESS_EPSILON = 0.05;
_averageLoudness = (_averageLoudness * PREVIOUS_FRAMES_RATIO) + (CURRENT_FRAME_RATIO * nextLoudness);
if (_averageLoudness < LOUDNESS_EPSILON) {
_averageLoudness = 0;
}
} }
qint64 AudioRingBuffer::readSamples(int16_t* destination, qint64 maxSamples) { qint64 AudioRingBuffer::readSamples(int16_t* destination, qint64 maxSamples) {