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-rw-r--r--servers/audio/effects/audio_effect_spectrum_analyzer.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/servers/audio/effects/audio_effect_spectrum_analyzer.cpp b/servers/audio/effects/audio_effect_spectrum_analyzer.cpp
index f5ac0afefa..305f9046c3 100644
--- a/servers/audio/effects/audio_effect_spectrum_analyzer.cpp
+++ b/servers/audio/effects/audio_effect_spectrum_analyzer.cpp
@@ -111,9 +111,10 @@ void AudioEffectSpectrumAnalyzerInstance::process(const AudioFrame *p_src_frames
float *fftw = temporal_fft.ptrw();
for (int i = 0; i < to_fill; i++) { //left and right buffers
- fftw[(i + temporal_fft_pos) * 2] = p_src_frames[i].l;
+ float window = -0.5 * Math::cos(2.0 * Math_PI * (double)i / (double)to_fill) + 0.5;
+ fftw[(i + temporal_fft_pos) * 2] = window * p_src_frames[i].l;
fftw[(i + temporal_fft_pos) * 2 + 1] = 0;
- fftw[(i + temporal_fft_pos + fft_size * 2) * 2] = p_src_frames[i].r;
+ fftw[(i + temporal_fft_pos + fft_size * 2) * 2] = window * p_src_frames[i].r;
fftw[(i + temporal_fft_pos + fft_size * 2) * 2 + 1] = 0;
}