info-beamer

Sound output through jack


#1

Is there a recommended way to output audio through the 3.5mm jack? I’m not sure which speaker system we will be using in our installation and want to be prepared for both.


#2

Hi Foley, yes, you can either place a file in the config folder on the SD card, and specify either “hdmi” or “local” which is for the 3.5mm jack.

The testing release version of the software has a really easy to use UI for changing this remotely, which is awesome, and it saved me a lot of hassle when I’d incorrectly set the audio output to HDMI and needed to change it :slight_smile:

https://info-beamer.com/doc/device-configuration#specifyaudiotarget


#3

Wow. I wasn’t able to find that page when I first searched. Thank you. Now the audio is playing beautifully.


#4

The client is asking if there is a way to adjust the volume on the pi. Is it just set to full by default? Is there a file to ensure that the volume is set to the same on all of them?


#5

Right now there’s no way to control the volume. It’s always 100% right now. In the future I’ll probably take another look at how I might use alsa instead of the direct Pi audio API, but I don’t have an ETA for that.


#6

Maybe just a simple headphone volume control would work for the time being?

Or if the videos are pre-recorded rather than streamed, you could adjust the audio level before the final render?


#7

Thanks for the suggestion. I’ve forwarded on the suggestion to my client.