How can I generate high-def audio with Alsa?

imyourskribe · 07-05-2007, 11:33 AM

Hi all,

I hope I'm sticking this in the right subforum--

I'm trying to generate high-def audio via the command line with alsa v1.0.9 and Azalia on-board audio. I just need to get the audio traffic going; I don't need to do anything special with it.

Is there an app (or feature of alsa that I'm missing) that I can use at the command line to just play a wav file or something in HD? Like I said: I really don't need anything fancy. I just want to get some traffic going that is guaranteed to be high definition.

Thanks!

macemoneta · 07-05-2007, 11:44 AM

Assuming your kernel has been generated with the "Intel HD Audio", you have a suitably sampled file to play, you can just use any command line player. For example, mplayer (yes, it does audio too).

imyourskribe · 07-05-2007, 01:18 PM

Quote:

Originally Posted by macemoneta

Assuming your kernel has been generated with the "Intel HD Audio", you have a suitably sampled file to play, you can just use any command line player. For example, mplayer (yes, it does audio too).

What do you mean by "suitably sampled?" Is there a specific bitrate (or range of bitrates) that a .wav file need be in order to be HD? (I suppose this question is not a "linux" question, but hopefully that's all right)

macemoneta · 07-05-2007, 01:36 PM

HD Audio is defined as 192 kHz/32 bit quality for two channels, and 96 kHz/32 bit for up to eight channels. The Intel HD Audio page is here. In any case, mplayer will report the audio information when it plays the file.