Alsa and 24-bit in Ubuntu Studio?

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On 03/05/2013 02:35 AM, Peder Hedlund wrote:
Quoting Grekim Jennings <grekimj@xxxxxxxxxxxxxxxxxx>:


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.


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