diff --git a/birdnet-pi/README.md b/birdnet-pi/README.md
index cf3c4a332..892f5ab64 100644
--- a/birdnet-pi/README.md
+++ b/birdnet-pi/README.md
@@ -92,6 +92,12 @@ Option 1 : Install let's encrypt addon, generate certificates. They are by defau
 
 Option 2 : enable port 80, define your BirdNET-Pi URL as https. Certificate will be automatically generated by caddy
 
+## Microphone comparison
+
+Conclusion, using mic from Dahua is good enough, but Boya by-lm40 is more optimal for range as birndet model analysis the 150-15000Hz range
+
+![image](https://github.com/alexbelgium/hassio-addons/assets/44178713/df992b79-7171-4f73-b0c0-55eb4256cd5b)
+
 ## Common issues
 
 Not yet available