Sound issue - pulsing sonar sound

mcguirepr89 / BirdNET-Pi

A realtime acoustic bird classification system for the Raspberry Pi 4B, 3B+, and 0W2 built on the TFLite version of BirdNET.

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Sound issue - pulsing sonar sound #351

Closed EdLaverne closed 2 years ago

EdLaverne commented 2 years ago

Hi - I'm a newb at this - trying to find a solution to the pulsing "sonar"-like sound that is the background to all audio coming from my RP. I have tried different usb mics, no change. I have even tried two different RPis, both a model 3 and model 4, to no avail. When I listen to other nodes on Birdweather.com I don't hear the pulsing, but on my node I do, although it is diminished compared to what I hear locally. Is there a separate reference for troubleshooting this? Thanks in advance.

mcguirepr89 commented 2 years ago

:thinking: Have you tried relocating the BirdNET-Pi to eliminate the possibility that there is something nearby introducing the noise?

ehpersonal38 commented 2 years ago

Could you upload a snippet of the sound?

EdLaverne commented 2 years ago

Hi - my suspicion is that it is power quality related. I will see if changing to a different circuit helps. I guess I could also try a low-noise or noise-cancelling power supply. Here is a sample file.

On Sun, Jun 5, 2022 at 9:14 AM ehpersonal38 @.***> wrote:

Could you upload a snippet of the sound?

— Reply to this email directly, view it on GitHub https://github.com/mcguirepr89/BirdNET-Pi/issues/351#issuecomment-1146841464, or unsubscribe https://github.com/notifications/unsubscribe-auth/AZPXMJV76DBBVI53ZVHW6R3VNTG5DANCNFSM5X5FAIDQ . You are receiving this because you authored the thread.Message ID: @.***>

EdLaverne commented 2 years ago

Thanks Patrick - it's definitely not a local ambient noise.

On Sun, Jun 5, 2022 at 9:12 AM Patrick McGuire @.***> wrote:

🤔 Have you tried relocating the BirdNET-Pi to eliminate the possibility that there is something nearby introducing the noise?

— Reply to this email directly, view it on GitHub https://github.com/mcguirepr89/BirdNET-Pi/issues/351#issuecomment-1146841151, or unsubscribe https://github.com/notifications/unsubscribe-auth/AZPXMJVA6XSNT7ZCKSYQGU3VNTGW7ANCNFSM5X5FAIDQ . You are receiving this because you authored the thread.Message ID: @.***>

ehpersonal38 commented 2 years ago

Unfortunately no file was attached - try directly through github.com instead of email?

EdLaverne commented 2 years ago

Here is a sample sound file - I had to embed it into LibreOffice Impress as it appears audio files won't attach to these comments: birdnet-pi-soundtest.odp

EdLaverne commented 2 years ago

I just tried plugging the RBpi into a battery backup I have, and the sound is the same. This battery was not plugged into the wall, so I guess it isn't the house power that is at fault. Are there any known issues with Pulse audio on the Raspberry Pi using this build?

mcguirepr89 commented 2 years ago

Are there any known issues with Pulse audio on the Raspberry Pi using this build?

Nope -- there are far too many installations that don't see this issue for the issue to have to do with PulseAudio or BirdNET-Pi itself. Sorry :/

EdLaverne commented 2 years ago

Yes, tried it with another usb mic I had. I will continue to work on it and let you know if I am able to resolve. Thanks for your help!

ehpersonal38 commented 2 years ago

So you've ruled out:

the pi
the mic
the power circuit

This leaves:

the 5v power supply
an external source of electronic interference (use aluminum foil? 😄 )

EdLaverne commented 2 years ago

Same issue with two different 5v power supplies on two different RPis, so probably not that. The shielding idea is a good one. I'll give it a try.

kk4pqr commented 2 years ago

Have you tried to connect the Rpi to a hotspot and take it to a different location?

phrozen77 commented 2 years ago

Does it sound like in #327 ? Currently on mobile, can’t open the LibreOffice doc…

EdLaverne commented 2 years ago

So today I tried fussing with alsamixer settings, to no avail, and then upon reboot the mic died. So not having another usb mic I hooked the RPi up to a usb audio interface and a XLR dynamic mic and voila! Noise gone! The alternate usb mic I used previously was borrowed, so maybe that one was of poor quality as well. Anyway, consider this issue closed. Thanks all for your help and suggestions. Great experience!

mcguirepr89 commented 2 years ago

Thanks for keeping us updated on your troubleshooting -- I'm glad that you were able to find the root of your issue and am selfishly glad it had nothing to do with BirdNET-Pi :)

Please accept my very best regards and please don't hesitate to let us know if you encounter any other issues. Please also feel invited to share your data with the community over on our "Share your BirdNET-Pi Stuff" page

Happy birding!

EdLaverne commented 2 years ago

Will do thanks!

EdLaverne commented 2 years ago

ok will do.

On Sun, Jun 5, 2022 at 12:32 PM ehpersonal38 @.***> wrote:

Unfortunately no file was attached - try directly through github.com instead of email?

— Reply to this email directly, view it on GitHub https://github.com/mcguirepr89/BirdNET-Pi/issues/351#issuecomment-1146870522, or unsubscribe https://github.com/notifications/unsubscribe-auth/AZPXMJRBWCUPI3QDFS5B63DVNT6F7ANCNFSM5X5FAIDQ . You are receiving this because you authored the thread.Message ID: @.***>