"Chopper" sound with DS-2CD2432F-IW

[Cor]

Greetings,

I bought some years ago this DS-2CD2432F-IW from hikvison , working fine witin Blue iris, never used the sound option in that camera.

Today I enabled the sound option, but it isn't working correctly , when I enable it , there is a very loud "chopper" kind of noise. Unable to hear anything else.

When I logon the Camera directly the noise is also there , I tried the different audio formats , but still the same, changing the gain also has no efect.

Anyone has an idea what this annoying sound can be?

many thanks,
Cor

 

[fenderman]

Disable the noise filter

 

[Cor]

Hello Fenderman,

Just switched it to off , but still that awfull noise. Anything else I can try?

Thanks,
Cor

 

[fenderman]

Hello Fenderman,

Just switched it to off , but still that awfull noise. Anything else I can try?

Thanks,
Cor

post a clip of the noise

 

[Cor]

Here is a small video of the sound.
Thanks,
Cor

 

[fenderman]

Here is a small video of the sound.
Thanks,
Cor

that is not normal...not sure what the cause is..you can try a different power supply...