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Groups > linux.debian.user > #234591

Re: Multichannel audio playback

From Rodolfo Medina <rodolfo.medina@gmail.com>
Newsgroups linux.debian.user
Subject Re: Multichannel audio playback
Date 2021-04-28 21:00 +0200
Message-ID <C8XzH-RL-9@gated-at.bofh.it> (permalink)
References (6 earlier) <C8O3n-3xZ-1@gated-at.bofh.it> <C8QRz-5hl-1@gated-at.bofh.it> <C8WaC-ag-13@gated-at.bofh.it> <C8X6F-Ij-3@gated-at.bofh.it> <C8Xgl-Lm-1@gated-at.bofh.it>
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Joel Roth <joelz@pobox.com> writes:

>> So we could consider problem 1) solved.
>> 
>> Let's try to go to problem 2).  The above command properly sends channel 1
>> to loudspeaker 1 and channel 2 to loudspeaker 2, but it doesn't manage to
>> send channel 3 into loudspeaker 3.  Actually, the Behringer seems to behave
>> in stereo mode.  But the strange thing is that outputs `B' (i.e. 3 and 4) do
>> not work at all and seems to be dead.  So please help: how can I - if ever
>> possible - send channel 3 to loudspeaker 3?  And, more in general: is it
>> possible, even with some other device, to achive what I want?
>
> The soundcard capabilities that linux sees are documented
> in the /proc/asound filesystem. That's worth investigating.

Here's the output:

$ cat /proc/asound/cards
 0 [HDMI           ]: HDA-Intel - HDA ATI HDMI
                      HDA ATI HDMI at 0xfea64000 irq 38
 1 [Generic        ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xfea60000 irq 16
 2 [U192k          ]: USB-Audio - UMC404HD 192k
                      BEHRINGER UMC404HD 192k at usb-0000:00:12.0-1.2, high speed

It does not help me...

> Here's one reference to what you can find there:
>
> https://www.ti.com/lit/an/sprac10/sprac10.pdf
>
> Another helpful source for guidance would be the Linux Audio
> Users mailing list, with many knowledgeable and helpful
> members. 

Yes, I wrote to it before buying the Behringer and I will again now.  Some
lister was unkind and called me ignorant...  ;-)

Rodolfo

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Thread

Re: Multichannel audio playback (was: Multichannel audio listening) Joel Roth <joelz@pobox.com> - 2021-04-27 22:40 +0200
  Re: Multichannel audio playback (was: Multichannel audio listening) Joel Roth <joelz@pobox.com> - 2021-04-27 23:20 +0200
    Re: Multichannel audio playback Rodolfo Medina <rodolfo.medina@gmail.com> - 2021-04-28 09:40 +0200
      Re: Multichannel audio playback didier gaumet <didier.gaumet@gmail.com> - 2021-04-28 10:50 +0200
        Re: Multichannel audio playback Rodolfo Medina <rodolfo.medina@gmail.com> - 2021-04-28 13:50 +0200
          Re: Multichannel audio playback didier gaumet <didier.gaumet@gmail.com> - 2021-04-28 15:00 +0200
          Re: Multichannel audio playback Joel Roth <joelz@pobox.com> - 2021-04-28 19:30 +0200
            Re: Multichannel audio playback Rodolfo Medina <rodolfo.medina@gmail.com> - 2021-04-28 20:30 +0200
              Re: Multichannel audio playback Joel Roth <joelz@pobox.com> - 2021-04-28 20:40 +0200
                Re: Multichannel audio playback Rodolfo Medina <rodolfo.medina@gmail.com> - 2021-04-28 21:00 +0200
              Re: Multichannel audio playback didier gaumet <didier.gaumet@gmail.com> - 2021-04-29 09:30 +0200
                Re: Multichannel audio playback Rodolfo Medina <rodolfo.medina@gmail.com> - 2021-04-29 15:00 +0200
                Re: Multichannel audio playback didier gaumet <didier.gaumet@gmail.com> - 2021-04-29 19:20 +0200
              Re: Multichannel audio playback David Wright <deblis@lionunicorn.co.uk> - 2021-04-30 06:00 +0200
                Re: Multichannel audio playback Dan Ritter <dsr@randomstring.org> - 2021-04-30 15:30 +0200
                Re: Multichannel audio playback David Wright <deblis@lionunicorn.co.uk> - 2021-05-01 06:50 +0200
                Re: Multichannel audio playback Rodolfo Medina <rodolfo.medina@gmail.com> - 2021-05-01 10:30 +0200
                Re: Multichannel audio playback David Wright <deblis@lionunicorn.co.uk> - 2021-05-04 18:10 +0200

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