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-   -   How to fix "hissing sound" problem in Slackware 9.1? (http://www.linuxquestions.org/questions/linux-general-1/how-to-fix-hissing-sound-problem-in-slackware-9-1-a-120363/)

linuxlah 11-27-2003 01:46 AM

How to fix "hissing sound" problem in Slackware 9.1?
 
my sound card is a built in ac97(rev 5). If I remember correctly I don't have this problem when I was using RH9.

meldroc 11-27-2003 02:12 AM

Have you tried adjusting the mixer settings?

linuxlah 11-27-2003 08:59 PM

Already.

/bin/bash 11-27-2003 10:56 PM

What driver does it use?

linuxlah 11-27-2003 11:12 PM

I'm using OSS driver. The only working driver for my Slackware 9.1 is either OSS or SDL.. alsa dosen't work. And both of the working driver gives the hissing sound

Electro 11-28-2003 03:03 AM

Hissing sound is normal. Every sound device hisses. AC97 is a codec standard. It does not tell me or anyone a thing.

Since you are using a different driver that you had in Redhat, its the driver you are using in Slackware. You can try setting up ALSA again in Slackware or live with what you got until the next OSS driver version.

The hissing sound comes from the Total Harmonic Distortion or THD although not a lot of devices are measured in N+THD. N+THD is noise added to the THD equation. N+THD is the realistic number that you will hear in the real world. Low numbers of THD will give the least amount of hissing. Computers makes a mess to audio devices so expect near 1% N+THD or more.


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