From b88c300d0467bd65dd9e58b3ae99977434f70fab Mon Sep 17 00:00:00 2001
From: Frank <91616163+softhack007@users.noreply.github.com>
Date: Thu, 18 Apr 2024 12:57:29 +0200
Subject: [PATCH] audioreactive: workaround for ArduinoFFT bug 93

This fix works around a problem that was solved in upstream ArduinoFFT 2.0.2
---
 usermods/audioreactive/audio_reactive.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/usermods/audioreactive/audio_reactive.h b/usermods/audioreactive/audio_reactive.h
index 442a651ea..8741eb14c 100644
--- a/usermods/audioreactive/audio_reactive.h
+++ b/usermods/audioreactive/audio_reactive.h
@@ -282,6 +282,7 @@ void FFTcode(void * parameter)
       //FFT.windowing(FFTWindow::Blackman_Harris, FFTDirection::Forward);  // Weigh data using "Blackman- Harris" window - sharp peaks due to excellent sideband rejection
       FFT.compute( FFTDirection::Forward );                       // Compute FFT
       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.
 
       FFT.majorPeak(&FFT_MajorPeak, &FFT_Magnitude);                // let the effects know which freq was most dominant
       FFT_MajorPeak = constrain(FFT_MajorPeak, 1.0f, 11025.0f);   // restrict value to range expected by effects