Audio white noise

[Cor]

Hello all,

I have a Dahua Ip camera 4MP and noticed there is a lot of "white noise" coming from the camera. Initially I thought it is the wind , but it is too steady for that , my other cameras don't have this issue.

It is difficult to reach this camera and can't look which type it is exactly.
This is the info on the setup page:
Software Version2.400.0000.23.R, build : 2015-12-15
WEB Version3.2.1.314024
ONVIF Version2.4.2
S/N2E00DEDPAA00055


I read some time ago , it is not wise to update firmware from Dahua cameras bought on Aliexpress.
Is this correct? worth a try or is there a big change I brick the camera?

Thanks,
Cornelis

 

[wittaj]

I would look for interference of cable going over an electric wire.

And yes, it is best to obtain any firmware updates from the vendor you purchased it from so that you do not run into issues. Any firmware you find here or elsewhere is obviously proceed at your own risk. We have many threads here where someone tried an update with a firmware they found on the internet and bricked their unit.

Many units being sold are Chinese hacked units into English that will either brick or go into Chinese upon updating. Some vendors will be upfront and tell consumers that as part of their website, but many do not or the consumer forgets...here is one such example....

 

[Cor]

@wittaj : thanks for your answer . With the updates was what I expected unfortunately. The camera is connected with POE, can not really change any cables there. But I will disconnect the camera and try it somewhere else.

thanks for the tip!

Cornelis

 

[Tapio]

We have been using (in Finland)several years on Eagle and Osprey nests this camera: DH-IPC-HDW5231R-Z.

It has functioned ok but the noise of WIND is disturbing.

Just wondered, if I would put something soft on the microphone? But i can't find the microphone location... (is it the smallest hole on camera?)

Here some of our videos from Osprey nest >

 

[JDreaming]

Usually the microphone looks something like this.

 

[Tapio]

Thank you! Just what I figured out. I already tried to cover it with a piece of hard foam but did not help.

Have to find something else (soft foam?).

Here the web cam live which i am going to move to an Osprey nest in April. >

Live video from Juurusvesi, Pohjois-Savo camera

Osprey live cam in Eastern Finland (Kuopio). Sääksen pesäkamera, Pohjois-Savo, Kuopio, Juurusvesi.

juurusvesi-pohjois-savo.click2stream.com

 

[wittaj]

Did you disable the noise filter? It sounds counter productive, but having it enabled has been the source of hiss for a lot of people.

Most find it works best with it disabled.

 

[Tapio]

Well, I did pu now a better cover, but did not help. I will ask my partner who can manage the camera settings about noise filter.

These cameras are up on the tree tops in summer, and it is often windy. When it is calm the sound is OK.

 

[Tapio]

Did you disable the noise filter? It sounds counter productive, but having it enabled has been the source of hiss for a lot of people.

Excuse my bad English but I did not understand that bolded.

 

[tigerwillow1]

Excuse my bad English but I did not understand that bolded.

I'll translate in my own words: The noise filter makes the audio useless. Shut it off.

 

[Tapio]

I'll translate in my own words: The noise filter makes the audio useless. Shut it off.

Thanks!

 

[Tapio]

We did put the noise filter away > new disturbing noise.
We put it back and I just put a piece of Duck tape over the microphone hole. Much better but still not perfect.

Here out public web which will be moved to an Osprey nest in April, in Eastern Finland.

Just now it is not that windy... Live video from Juurusvesi, Pohjois-Savo camera