Signalsmith-Audio/signalsmith-stretch
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Skip the peak-finding if we're not pitch-shifting

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Geraint 2023-05-07 22:58:16 +01:00
parent d1bc2e358d
commit 8395e46da7
1 changed files with 14 additions and 2 deletions
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signalsmith-stretch.h
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@ -356,8 +356,20 @@ private:
Sample smoothingBins = Sample(stft.fftSize())/stft.interval(); Sample smoothingBins = Sample(stft.fftSize())/stft.interval();
int longVerticalStep = std::round(smoothingBins); int longVerticalStep = std::round(smoothingBins);
if (customFreqMap || freqMultiplier != 1) {
findPeaks(smoothingBins); findPeaks(smoothingBins);
updateOutputMap(); updateOutputMap();
} else { // we're not pitch-shifting, so no need to find peaks etc.
for (int c = 0; c < channels; ++c) {
Band *bins = bandsForChannel(c);
for (int b = 0; b < bands; ++b) {
bins[b].inputEnergy = std::norm(bins[b].input);
}
}
for (int b = 0; b < bands; ++b) {
outputMap[b] = {Sample(b), 1};
}
}
// Preliminary output prediction from phase-vocoder // Preliminary output prediction from phase-vocoder
for (int c = 0; c < channels; ++c) { for (int c = 0; c < channels; ++c) {