normalization, filtering and noise reduction

[morrowwm]

Following discussion at #253

Might want to add configuration around this?

• enable/disable
• highpass filter cutoff frequency

[alexbelgium]

Hi, very interesting option !

Have you tried it and see a positive impact on your detections? I've experimented a bit with highpass to remove things below 150khz and actually it decreased my detection values as the latest version of the model is trained on 0-15khz. A good way to test is import a file in the desktop analyzer, which has a cut-off option embedded in it.

Btw this repository is not active anymore, this one is the one where all activity happens : https://github.com/Nachtzuster/BirdNET-Pi I would highly recommend it

[morrowwm]

Hi, very interesting option !

Have you tried it and see a positive impact on your detections?

As far as I can tell from the birdnet-pi flow, I'm only doing this after analysis. It's for final presentation only.

I've thought about it pre-detection, but haven't done any serious investigation.

Btw this repository is not active anymore, this one is the one where all activity happens : https://github.com/Nachtzuster/BirdNET-Pi I would highly recommend it

Oh! That explains the lack of activity. I'll go over to Nachtzuster's repository. Thank you!

[alexbelgium]

Hi, very interesting option !
Have you tried it and see a positive impact on your detections?

As far as I can tell from the birdnet-pi flow, I'm only doing this after analysis. It's for final presentation only.

I've thought about it pre-detection, but haven't done any serious investigation.

Btw this repository is not active anymore, this one is the one where all activity happens : https://github.com/Nachtzuster/BirdNET-Pi I would highly recommend it

Oh! That explains the lack of activity. I'll go over to Nachtzuster's repository. Thank you!

Ah interesting! So it improved the mp3 quality it's a great idea!