From 42cc30215978cfec2f37ebb2655bd0c99b6227dc Mon Sep 17 00:00:00 2001
From: Frank <91616163+softhack007@users.noreply.github.com>
Date: Mon, 19 Dec 2022 11:15:37 +0100
Subject: [PATCH] enable bandpass filter for analog input

Analog input seems to sometime have a very strong negative DC offset, when the signal is not centered at 1.8V. The bandpass filter should help to reenter such "off limits" signals.
See discussions in issue #10 .
---
 usermods/audioreactive/audio_reactive.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usermods/audioreactive/audio_reactive.h b/usermods/audioreactive/audio_reactive.h
index c27d7268..77bca04c 100644
--- a/usermods/audioreactive/audio_reactive.h
+++ b/usermods/audioreactive/audio_reactive.h
@@ -1284,7 +1284,7 @@ class AudioReactive : public Usermod {
         case 0:
         default:
           DEBUGSR_PRINTLN(F("AR: Analog Microphone (left channel only)."));
-          //useBandPassFilter = true;
+          useBandPassFilter = true;
           audioSource = new I2SAdcSource(SAMPLE_RATE, BLOCK_SIZE);
           delay(100);
           if (audioSource) audioSource->initialize(audioPin);