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Small simplification

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This commit is contained in:
Chris Cannam
2022-06-17 16:56:09 +01:00
parent b4e921003f
commit 8c07d06d72
1 changed files with 14 additions and 19 deletions
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33
src/finer/R3StretcherImpl.cpp
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@@ -746,11 +746,12 @@ R3StretcherImpl::analyseChannel(int c, int inhop, int prevInhop, int prevOuthop)
ToPolarSpec spec;
// For the classify scale we always want the full
// range, as all the magnitudes (though not phases)
// are potentially relevant to classification and
// formant analysis. But this case here only happens
// if we don't haveValidReadahead - the normal case is
// above and just copies from the previous readahead.
// range, as all the magnitudes (though not
// necessarily all phases) are potentially relevant to
// classification and formant analysis. But this case
// here only happens if we don't haveValidReadahead -
// the normal case is above and just copies from the
// previous readahead.
if (fftSize == classify) {
spec.magFromBin = 0;
spec.magBinCount = classify/2 + 1;
@@ -956,22 +957,16 @@ R3StretcherImpl::synthesiseChannel(int c, int outhop)
auto &cd = m_channelData.at(c);
for (auto &it : cd->scales) {
auto &scale = it.second;
int bufSize = scale->bufSize;
// copy to prevMag before filtering
v_copy(scale->prevMag.data(),
scale->mag.data(),
bufSize);
}
for (const auto &band : cd->guidance.fftBands) {
int fftSize = band.fftSize;
auto &scale = cd->scales.at(fftSize);
auto &scaleData = m_scaleData.at(fftSize);
// copy to prevMag before filtering
v_copy(scale->prevMag.data(),
scale->mag.data(),
scale->bufSize);
double winscale = double(outhop) / scaleData->windowScaleFactor;
// The frequency filter is applied naively in the frequency
@@ -997,9 +992,9 @@ R3StretcherImpl::synthesiseChannel(int c, int outhop)
scale->advancedPhase.data() + lowBin,
highBin - lowBin);
if (highBin < fftSize/2 + 1) {
v_zero(scale->real.data() + highBin, fftSize/2 + 1 - highBin);
v_zero(scale->imag.data() + highBin, fftSize/2 + 1 - highBin);
if (highBin < scale->bufSize) {
v_zero(scale->real.data() + highBin, scale->bufSize - highBin);
v_zero(scale->imag.data() + highBin, scale->bufSize - highBin);
}
scaleData->fft.inverse(scale->real.data(),