Re: Mysteries of sound in Fedora-9

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Timothy Murphy wrote:
Tim wrote:

Someone mentioned trying something like "cat foo.ogg > /dev/dsp".
In my case, when sound is working this produces a white noise.
Is this testing the sound driver
(in my case snd_intel8x0 , I assume) directly?
If you catted a raw audio format, rather than a compressed one, to the
sound device, you ought to hear sound.  Hearing garbage isn't really
going to prove much.
Thanks for your interest and perseverance.

I gather that .wav is an uncompressed format (according to
<http://www.webopedia.com/DidYouKnow/Computer_Science/2005/digital_audio_formats.asp>),
but I just hear white noise if I cat this,
while I hear the sound properly with aplay:
-----------------------------------
[[email protected] ~]$ cat /usr/share/sounds/alsa/Front_Center.wav > /dev/dsp
[[email protected] ~]$ aplay /usr/share/sounds/alsa/Front_Center.wav
-----------------------------------

Do you actually hear the words if you give the first command above?

If you don't have the alsa oss emulation layer installed, there is nothing to decode the sound as if it is OSS. yum install alsa-oss* The above should play after that. While your at it you might want to install all of the alsa plugins,
yum install alsa-plugins*
They will give you interoperability with applications like jack and oss.


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