Hiss on sound card

Have you tried running "alsamixer" in a terminal and then lowering the volume (using the arrow keys) on all capture/recording channels like microphone/CD/line-in (you may have to press tab once or twice in the interface to go through them all). That is a common cause of hiss on many sound cards.

Dumb question how do you get to a terminal?

On Sat, 2007-09-15 at 21:14 +0000, Bah Humbug wrote:
> Have you tried running "alsamixer" in a terminal and then lowering the
> volume (using the arrow keys) on all capture/recording channels like
> microphone/CD/line-in (you may have to press tab once or twice in the
> interface to go through them all). That is a common cause of hiss on
> many sound cards.
>

Applications->accessories->Terminal, then just type in "alsamixer" (without quotes) and press return.

tried it and it did not work.

On Sat, 2007-09-15 at 21:14 +0000, Bah Humbug wrote:
> Have you tried running "alsamixer" in a terminal and then lowering the
> volume (using the arrow keys) on all capture/recording channels like
> microphone/CD/line-in (you may have to press tab once or twice in the
> interface to go through them all). That is a common cause of hiss on
> many sound cards.
>

Do you still have this problem with Gutsy or Hardy? The problem only happens on startup? Otherwise it works ok?

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!.

I had the same problem.
Muting the microphone (&other input sound devices) did stop my PC hissing.

The problem is that KMix options are quite confusing for me:
what does Microphone and Microphone amplifier have in common with sound output?