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Short-circuit slightly (in output, not so much in efficiency) when ratio is 1

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Chris Cannam
2022-05-27 11:45:28 +01:00
parent 9379908982
commit 4d4bc7b4c3
2 changed files with 37 additions and 9 deletions
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42
src/finer/Guide.h
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@@ -126,7 +126,7 @@ public:
bandFftSize = roundUp(int(ceil(rate/32.0)));
m_configuration.fftBandLimits[1] =
BandLimits(bandFftSize, rate, m_minLower, m_maxHigher);
BandLimits(bandFftSize, rate, 0.0, m_maxHigher);
bandFftSize = roundUp(int(ceil(rate/64.0)));
m_configuration.fftBandLimits[2] =
@@ -146,13 +146,36 @@ public:
const BinSegmenter::Segmentation &nextSegmentation,
Guidance &guidance) const {
bool potentialKick = checkPotentialKick(magnitudes, prevMagnitudes);
guidance.kick.present = false;
guidance.lowPercussive.present = false;
guidance.highPercussive.present = false;
guidance.phaseReset.present = false;
double nyquist = m_parameters.sampleRate / 2.0;
guidance.fftBands[0].fftSize = roundUp(int(ceil(nyquist/8.0)));
guidance.fftBands[1].fftSize = roundUp(int(ceil(nyquist/16.0)));
guidance.fftBands[2].fftSize = roundUp(int(ceil(nyquist/32.0)));
if (fabs(ratio - 1.0) < 1.0e-6) {
guidance.fftBands[0].f0 = 0.0;
guidance.fftBands[0].f1 = 0.0;
guidance.fftBands[1].f0 = 0.0;
guidance.fftBands[1].f1 = m_minHigher;
guidance.fftBands[2].f0 = m_minHigher;
guidance.fftBands[2].f1 = nyquist;
for (int i = 0; i < 5; ++i) {
guidance.phaseLockBands[i].p = 0;
guidance.phaseLockBands[i].beta = 1.0;
guidance.phaseLockBands[i].f0 = nyquist;
guidance.phaseLockBands[i].f1 = nyquist;
}
guidance.phaseLockBands[0].f0 = 0.0;
guidance.phaseLockBands[0].f1 = nyquist;
guidance.channelLock.present = false;
return;
}
guidance.channelLock.present = true;
guidance.channelLock.f0 = 0.0;
guidance.channelLock.f1 = 600.0;
@@ -162,6 +185,8 @@ public:
guidance.lowPercussive.f0 = 0.0;
guidance.lowPercussive.f1 = segmentation.percussiveBelow;
}
bool potentialKick = checkPotentialKick(magnitudes, prevMagnitudes);
if (potentialKick && prevSegmentation.percussiveBelow < 40.0) {
guidance.kick = guidance.lowPercussive;
@@ -195,17 +220,12 @@ public:
double lower = snapToTrough(m_defaultLower, troughs);
if (lower > m_maxLower) lower = m_maxLower;
double nyquist = m_parameters.sampleRate / 2.0;
guidance.fftBands[0].fftSize = roundUp(int(ceil(nyquist/8.0)));
guidance.fftBands[0].f0 = 0.0;
guidance.fftBands[0].f1 = lower;
guidance.fftBands[1].fftSize = roundUp(int(ceil(nyquist/16.0)));
guidance.fftBands[1].f0 = lower;
guidance.fftBands[1].f1 = higher;
guidance.fftBands[2].fftSize = roundUp(int(ceil(nyquist/32.0)));
guidance.fftBands[2].f0 = higher;
guidance.fftBands[2].f1 = nyquist;
@@ -231,6 +251,12 @@ public:
guidance.phaseLockBands[3].f0 = higher;
guidance.phaseLockBands[3].f1 = nyquist;
// Currently unused
guidance.phaseLockBands[4].p = 0;
guidance.phaseLockBands[4].beta = 1.0;
guidance.phaseLockBands[4].f0 = nyquist;
guidance.phaseLockBands[4].f1 = nyquist;
/*
std::ostringstream str;
str << "Guidance: FFT bands: ["