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the proper test of fred's low pass algorithm

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Stephen Birarda 2013-03-01 15:47:55 -08:00
parent 1c6fa52357
commit 0c05713955
1 changed files with 7 additions and 2 deletions
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9
mixer/src/main.cpp
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@ -142,7 +142,7 @@ void *sendBuffer(void *args)
? otherAgentBuffer->getBuffer() + RING_BUFFER_SAMPLES - numSamplesDelay ? otherAgentBuffer->getBuffer() + RING_BUFFER_SAMPLES - numSamplesDelay
: otherAgentBuffer->getNextOutput() - numSamplesDelay; : otherAgentBuffer->getNextOutput() - numSamplesDelay;
int16_t *lowPassFrame = new int16_t[(BUFFER_LENGTH_SAMPLES_PER_CHANNEL * 2) / 4];
// calculate the low-pass filter intensity // calculate the low-pass filter intensity
float lowPassIntensity = ((agentBearing - otherAgentBuffer->getBearing()) * BEARING_LOW_PASS_FACTOR) + float lowPassIntensity = ((agentBearing - otherAgentBuffer->getBearing()) * BEARING_LOW_PASS_FACTOR) +
(fabsf(angleToSource) * ANGLE_TO_SOURCE_LOW_PASS_FACTOR); (fabsf(angleToSource) * ANGLE_TO_SOURCE_LOW_PASS_FACTOR);
@ -162,7 +162,11 @@ void *sendBuffer(void *args)
if (s + numSamplesDelay < BUFFER_LENGTH_SAMPLES_PER_CHANNEL) { if (s + numSamplesDelay < BUFFER_LENGTH_SAMPLES_PER_CHANNEL) {
delayedChannel[s + numSamplesDelay] = currentSample; delayedChannel[s + numSamplesDelay] = currentSample;
} }
}
int16_t lowPassFrame[(BUFFER_LENGTH_SAMPLES_PER_CHANNEL * 2) / 4];
for (int s = 0; s < BUFFER_LENGTH_SAMPLES_PER_CHANNEL; s++) {
if ((s + 1) % 4 == 0) { if ((s + 1) % 4 == 0) {
int sampleIndex = ((s + 1) / 4) - 1; int sampleIndex = ((s + 1) / 4) - 1;
// this will be a sample in the lowPassFrame // this will be a sample in the lowPassFrame
@ -171,6 +175,7 @@ void *sendBuffer(void *args)
} }
clientMix[s] = lowPassFrame[s / 4]; clientMix[s] = lowPassFrame[s / 4];
clientMix[s + BUFFER_LENGTH_SAMPLES_PER_CHANNEL] = lowPassFrame[(s + BUFFER_LENGTH_SAMPLES_PER_CHANNEL) / 4];
} }
} }
} }