[LAU] debugging hiss

[Lorenzo Sutton]

On 14/03/2014 14:46, Rustom Mody wrote:
[...]
> For now, I checked with xfce4-mixer.
> If I turn down master or front-mic the hiss reduces

Is the machine a laptop? In that case the 'front-mic' could be the 
inbuilt one?
Anyhow, mute all mic-related controls it in the _Playback_ tab of the 
mixer. You only want the microphone(s) enabled in the Capture section, 
unless you explicitly want to 'monitor' them.
Also check that any 'mic boost' or similar is turned off/down, still in 
the Playback section.

Ciao,
Lorenzo.