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audioreactive: better do DC removal after FFT.complexToMagnitude();

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Frank
2024-04-18 13:36:00 +02:00
parent 0e0728b15d
commit 7dc6659e70
1 changed files with 1 additions and 1 deletions
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usermods/audioreactive/audio_reactive.h
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@@ -601,8 +601,8 @@ void FFTcode(void * parameter)
FFT.windowing(FFTWindow::Blackman_Harris, FFTDirection::Forward); // Weigh data using "Blackman- Harris" window - sharp peaks due to excellent sideband rejection
#endif
FFT.compute( FFTDirection::Forward ); // Compute FFT
vReal[0] = 0; // The remaining DC offset on the signal produces a strong spike on position 0 that should be eliminated to avoid issues.
FFT.complexToMagnitude(); // Compute magnitudes
vReal[0] = 0; // The remaining DC offset on the signal produces a strong spike on position 0 that should be eliminated to avoid issues.
#else
FFT.DCRemoval(); // let FFT lib remove DC component, so we don't need to care about this in getSamples()