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Bugfix + added meteor demodulator

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Ryzerth
2021-04-01 16:54:16 +02:00
parent bcc1744a76
commit a9cb6bfe79
13 changed files with 789 additions and 31 deletions
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11
core/src/dsp/pll.h
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@@ -54,7 +54,8 @@ namespace dsp {
for (int i = 0; i < count; i++) {
// Mix the VFO with the input to create the output value
outVal = lastVCO * _in->readBuf[i];
outVal.re = (lastVCO.re*_in->readBuf[i].re) - (lastVCO.im*_in->readBuf[i].im);
outVal.im = (lastVCO.im*_in->readBuf[i].re) + (lastVCO.re*_in->readBuf[i].im);
out.writeBuf[i] = outVal;
// Calculate the phase error estimation
@@ -77,12 +78,12 @@ namespace dsp {
}
if (error > 1.0f) { error = 1.0f; }
if (error < -1.0f) { error = -1.0f; }
else if (error < -1.0f) { error = -1.0f; }
// Integrate frequency and clamp it
vcoFrequency += _beta * error;
if (vcoFrequency > 1.0f) { vcoFrequency = 1.0f; }
if (vcoFrequency < -1.0f) { vcoFrequency = -1.0f; }
else if (vcoFrequency < -1.0f) { vcoFrequency = -1.0f; }
// Calculate new phase and wrap it
vcoPhase += vcoFrequency + (_alpha * error);
@@ -90,8 +91,8 @@ namespace dsp {
while (vcoPhase < (-2.0f * FL_M_PI)) { vcoPhase += (2.0f * FL_M_PI); }
// Calculate output
lastVCO.re = cosf(vcoPhase);
lastVCO.im = sinf(vcoPhase);
lastVCO.re = cosf(-vcoPhase);
lastVCO.im = sinf(-vcoPhase);
}