Hi everyone.

I was able to get audio working on the Octocard. If you are curious.

I installed Index of /pub/raspberrypi/raspbian/images/raspbian-2018-11-15


I followed some of the instructions at How to setup - AudioInjector Forums


Then I did the manual process but I skept updating the kernel. If you update the kernel, it will be a too new of a version and audio and wireless interfaces would stop working.

No need to uninstall pulseaudio nor run the ~pi/.config/lxpanel/LXDE-pi/panels/panel command because the panel file doesn't exist in this version of OS.

So I just modified so the last two lines are:
#dtparam=audio=on dtoverlay=audioinjector-addons

Then, I created the file /etc/asound.conf with the content:

pcm.!default { # type hw # card 0 type plug slave.pcm "anyChannelCount" } ctl.!default { type hw card 0 } pcm.anyChannelCount { type route slave.pcm "hw:0" slave.channels 8; ttable { 0.0 1 1.1 1 2.2 1 3.3 1 4.4 1 5.5 1 6.6 1 7.7 1 } } ctl.anyChannelCount { type hw; card 0; }

Finally, I created the file ~/.asoundrc with the content:

pcm.!default { # type hw # card 0 type plug slave.pcm "anyChannelCount" } ctl.!default { type hw card 0 }

After rebooting, the card is listed and I can play media files.

Somehow the multichannel media files I have are downmixed to mono or to the first two output channels. I will test with more in-depth channel patching. But it does work. I get audio and no noise.

Cheers,

Fausto Daniel





El martes, 14 de marzo de 2023, 12:05:20 p. m. EDT, Holguin Daniel via People <people@lists.audioinjector.net> escribió:


Hi all!
I installed mplayer, then played a stereo wav. Same result, noise out of the 6 channels.
Has anyone made work the octocard? Would you please share the steps to replicate?

Imagen integrada


Thanks!
Daniel

El lunes, 13 de marzo de 2023, 11:12:06 p. m. EDT, Holguin Daniel via People <people@lists.audioinjector.net> escribió:


Hi!

So I wrote some test file with jackaudio and the output was noisy. Therefore I started to debug.

1. aplay -l and -L both look apparently correct.
Imagen integrada
2. So I decided to install audacity and produce a test file to verify each channel independently.
3. The octocard device appears in the software
4. When playing it sounds noise through all the channels disregarding the audio content.

Here's a video of the tests in which I show the problem to my friend.




Can you guys help me make my Octocard work?

I'm using Raspbian
Linux ampd 6.1.13-v7+ #1632 SMP Thu Feb 23 12:19:08 GMT 2023 armv7l GNU/Linux

Thanks.

Fausto


--
People mailing list
People@lists.audioinjector.net
https://lists.audioinjector.net/mailman/listinfo/people