[LAU] Alsa and 24-bit in Ubuntu Studio?

[Grekim Jennings]

On 03/05/2013 02:35 AM, Peder Hedlund wrote:
> Quoting Grekim Jennings <grekimj at acousticrefuge.com>:
>
>
>> Okay, thank you.  I just find it strange that my non-audio Debian
>> Squeeze system will play it and an actual audio distro will not.
>
> Does your Squeeze and Studio box have similar sound cards?
> While "aplay --help" lists  S24_LE and S24_BE as recognized sample 
> formats it also says "Some of these may not be available on selected 
> hardware".
>
> If aplay works on Squeeze it might be that the sound card on that box 
> supports 24bit but your card on Studio doesn't. I'm guessing 
> sndfile-play converts the output to whatever the card wants.
>
> On a side note asound happily plays ordinary text files, like 
> /etc/services .
> Erik, when can we expect sndfile-play to do that :)
>
> - Peder
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The studio computer has an RME 9632 and a stock sound card.  It is 
mainly running Arch (latest Alsa and no problems), but I experiment with 
other systems all the time.   The Debian system (laptop) has just a 
stock soundcard as well and running with relatively older (1.0.23) Alsa 
support and has no problems.  Sometimes I will test things out between 
the two with the Audiobox (usb).   Interestingly, with a 'standard' 
Ubuntu 12.04 (although 32 bit and not 64 bit as is Ubuntu Studio) I did 
not have this problem...so 24 bit files were playable after I compiled 
Alsa-Tools.