From f3120b434d125b93e2b7e690f324fab356f6a0c3 Mon Sep 17 00:00:00 2001
From: Alexandre <44178713+alexbelgium@users.noreply.github.com>
Date: Mon, 7 Oct 2024 15:04:03 +0200
Subject: [PATCH] Update DOCS.md

---
 birdnet-pi/DOCS.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/birdnet-pi/DOCS.md b/birdnet-pi/DOCS.md
index 473edcf40..2853045f3 100644
--- a/birdnet-pi/DOCS.md
+++ b/birdnet-pi/DOCS.md
@@ -109,6 +109,8 @@ sleep 5
 # ffmpeg -nostdin -f alsa -acodec pcm_s16le -ac 2 -ar 48000 -i hw:0,0 -f rtsp -acodec pcm_s16le rtsp://localhost:8554/birdmic -rtsp_transport tcp || true & true
 # Using plughw
 ffmpeg -nostdin -f alsa -acodec pcm_s32le -ac 2 -ar 48000 -i plughw:0,0 -f rtsp -acodec pcm_s16be rtsp://localhost:8554/birdmic -rtsp_transport tcp -buffer_size 512k || ffmpeg -nostdin -f alsa -acodec pcm_s32le -ac 2 -ar 48000 -i plughw:1,0 -f rtsp -acodec pcm_s16be rtsp://localhost:8554/birdmic -rtsp_transport tcp -buffer_size 512k || true & true
+# Using plughw with high, lowpass, and limit to avoid clipping
+ffmpeg -nostdin -f alsa -acodec pcm_s32le -ac 2 -ar 48000 -i plughw:0,0 -af "highpass=f=100, lowpass=f=15000, alimiter=limit=1.0:attack=5:release=50" -f rtsp -acodec pcm_s16be rtsp://localhost:8554/birdmic -rtsp_transport tcp -buffer_size 512k || true & true
 
 # Set microphone volume
 sleep 5