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Fix Hann window on Spectrum Analyzer.

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This commit is contained in:
Julian Todd
2026-02-27 09:32:57 +00:00
parent ebc126193a
commit cc38aa6d30
1 changed files with 4 additions and 3 deletions
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servers/audio/effects/audio_effect_spectrum_analyzer.cpp
+4 -3
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@@ -47,7 +47,8 @@ static void smbFft(float *fftBuffer, long fftFrameSize, long sign)
{
float wr, wi, arg, *p1, *p2, temp;
float tr, ti, ur, ui, *p1r, *p1i, *p2r, *p2i;
long i, bitm, j, le, le2, k;
long i, bitm, j, le, le2, k, logN;
logN = (long)(Math::log((double)fftFrameSize) / Math::log(2.) + .5);
for (i = 2; i < 2 * fftFrameSize - 2; i += 2) {
for (bitm = 2, j = 0; bitm < 2 * fftFrameSize; bitm <<= 1) {
@@ -67,7 +68,7 @@ static void smbFft(float *fftBuffer, long fftFrameSize, long sign)
*p2 = temp;
}
}
for (k = 0, le = 2; k < (long)(std::log((double)fftFrameSize) / std::log(2.) + .5); k++) {
for (k = 0, le = 2; k < logN; k++) {
le <<= 1;
le2 = le >> 1;
ur = 1.0;
@@ -109,7 +110,7 @@ void AudioEffectSpectrumAnalyzerInstance::process(const AudioFrame *p_src_frames
while (p_frame_count) {
int to_fill = fft_size * 2 - temporal_fft_pos;
to_fill = MIN(to_fill, p_frame_count);
const double to_fill_step = Math::TAU / (double)fft_size;
const double to_fill_step = Math::TAU / (double)(fft_size * 2);
float *fftw = temporal_fft.ptrw();
for (int i = 0; i < to_fill; i++) { //left and right buffers