independent recording from 6 mono inputs

[darkopop]

Hy,

I am newbie to Raspberry Pi and linux , bought octo and install - audioinjector.octo.setup_0.3_all.deb.tar.gz
1.sudo dpkg -i Downloads/audioinjector.octo.setup_0.3_all.deb
2. sudo apt remove pulseaudio
3. sudo reboot

it and I'm trying to record 6 individual files from 6 inputs at same time , sample rate should be low 22050 or 11025 16 bit . Help is needed. Is my Config table correct

the content of asound.cnfg
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;
}

----

the contest of .asoundrc

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

ctl.!default {
type hw
card 0
}

---

When i try to record from 3 input with comand

arecord -D hw:0,3 1.wav

get respond

arecord: main:788 audio open error : No such file or directory

QUESTION :

Do I need to change config files to get independent 6 audio inputs max 22050 sample rate and achieve to record 6 independent files at same time from different sources?

Best Regars,
Darko

[flatmax]

ok - to record from 6 channels, you probably want to do the following :

Code: Select all

arecord -c 6 -r 22050 -f S32 /tmp/test.wav

That should record 6 channels to the file /tmp/test.wav
If that fails, try 8 channels for sanity testing :

Code: Select all

arecord -c 8 -r 22050 -f S32 /tmp/test.wav

thanks
Matt

[tilimil]

Thinking about buying one of these boards for a project. Any reason that I could not record each channel to a separate file with the right channel map in avconv or ffmpeg?

[flatmax]

Check here for more information on how to split recording to individual files :
http://forum.audioinjector.net/viewtopic.php?f=9&t=2728

Also you can use the encorder software on each file if you like. There may be a way to do something similar directly with avconv ... not sure- let us know what you find out.

MAtt

[wira]

Dear all,

Need your kind advice on how to get my 6 channel RCA inputs working for mic recording.
Hope to get step by step guidelines for it.
So far I did manage to get my 8 channel RCA outputs working for mono and stereo.
Below is the photo of my hardware setup. The asound.conf and asoundrc files are shown below as well.
Appreciate very much for your kind help.

1. Hardware setup


2.asound.conf


3..asoundrc



Best Regards
Wira