Ok couple of things on noise on the audio from camera…
1. Are you running a balanced or unbalanced cable
2.Are the extension cables matching balance or unbalanced
3. How long is your audio snake.. if it’s over 25 feet..It IS balanced cable
4. If you are using unbalanced cables, What a lot of folks do is add a DI (also called a direct box)…
between the mixer and audio source. What this does is to make a unbalanced line a balanced line..it will not make a balanced line into a unbalanced line… unless you know what type of cables you have, it’s like a dog chasing it’s tail..
Goto the internet and lookup balanced an unbalanced 3.5mm male cable..
Then look up audio snake cables
Then look up a balanced an unbalanced xlr an 1/8” cables…
I HATE NOSY AUDIO…so I trained myself..
the above also applies your aux out… this is the signal output of the mixer going to 3.5mm camera INPUT signal.
I still have a lot to learn..but please solve your balanced and unbalanced cables and signals.
Good luck
Omar
The latest upgrade should fix the audio noise floor issue for any of the 12x, 20x, or 30x NDI models.
Hi Grant,
I posted an update in this thread previously but the latest firmware for the 30X models does include the "noise floor fix".
It looks like it is not explicitly listed under the Changelog for the 30X but it was part of recent updates.
The latest version for the 30X models as of 1/6/22 is v6.3.20.
You can download the latest firmware for the cameras from the Firmware Files page.
I'm still waiting to see the "improved audio quality" fix to appear in the PT30X-SDI firmware. Its been a year since I posted to this topic about it.
I don't see a fix for the audio noise floor on the USB models yet, it should show up on the firmware changelog once it gets fixed. https://ptzoptics.com/firmware-changelog/
Hello! Just thought I'd ping this conversation again and see if there are firmware updates yet for the USB camera models that fix the noise floor issue? We have the USB 20x model at our church building and the noise floor is around -33db. I've gotten it to around -38db by fiddling with the gain/input levels, but would like to get it down further if possible. Should it be possible to get lower than that by adjusting gain/input levels? Thanks!
Hi Dan,
Unfortunately, we do not have a fix for the USB models yet.
We are working on it for the USB cameras and we will post an update here once it is released.
In the meantime, we have found increasing the input volume coming from the audio source and lowering the gain on the cameras in the Web GUI can help eliminate the noise floor.
Hi Josiah,
We do not have firmware for the USB models that fixes the noise floor issue.
We do expect to release firmware that addresses that problem sometime by the end of April.
Hello,
Has there been a fix yet for the USB models for the noise issue? We like being able to pull our audio over RTSP but the ringing noise in the background is terrible.
Hi Marius,
Are you doing a direct RTMP stream from the camera or bringing the video feed into software on the production PC and streaming out from there?
Assuming you are using software (something like OBS, vMIx, or Wirecast) on your production PC it would be fine to run the audio directly to the PC.
At that point you would be able to add the audio as a source within the software. And you can disable the audio feed on the camera if needed through the web interface, under the Audio section.
Also, are you sure your camera is up to date on firmware? The newest firmware for the 30X NDI models should have corrected the noise floor issue.
You can download the latest firmware from the Firmware Finder.
Hello,
Our church purchased one of your PTZ Optics 30x NDI/HX camera for streaming. We have the church mixing board output connected to the 3.5 mm audio input of the camera. With this configuration, the sound has a very audible noise in the background.
Is it possible to unplug the 3.5 mm connection and go directly from the board to an audio interface to USB to the PC? This would feed the audio directly to the production PC / Box using a USB Audio Converter.
At this point, the camera is our actual streaming method. How do I tell the camera to ignore the line input and use the USB audio coming in the PC?
So, we had our first big show on the weekend going direct to YouTube live from the camera. And I'm happy to report that it was a complete success and the audio s/n quite decent - though I never was able to compare it to what it was before the firmware upgrade so can't comment on the difference. In our case, leaving the "Input Vol" at 0 for both left and right seemed to work best overall.
Thanks so much for the fix. :)
Great to hear about the SDI and NDI update. Any update on the timeline for the USB models?
Jerry Cates
We successfully set-up a live stream church service and were able to control the camera on Studio 6 by vimeo and on to YouTube. Our problem is a background static coming over the network with the video. The camera is located about 100' away from our sound rack and network drop, so both the cat6 and audio line (shielded XLR and a XLR to 3.5mm patch cable) are running together to the camera where we use the line in jack to drop in the audio to the stream. At first I thought it might be interference picked up on the way so I disconnected the audio jack from the camera and we still have the same static. Then I ran a separate clean cat6 line away from all possible interference to the camera and I still have the same noise. Do you have any suggestions?
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