I’ve been living with this problem for quite some time now and today I had some time left over at work so I figured I’d have a look into it again. I’ve tried a few different settings from the Ubuntu wiki but they always resulted in the same tinny sound.
My colleague who sits in the same room runs OSX on his iMac and has pretty decent sound, but under Ubuntu the sound is horrible. Today he isn’t here so I have to live with horrible sound and was getting quite annoyed so I decided to have a look at it.. The sound is very tinny, like someone hung an ear-bud into a coke can and cranked up the volume. Thanks to this fix I am now able to enjoy the same quality sound as I had under OSX:
http://ubuntuforums.org/showthread.php?p=8793845#post8793845
In a nutshell it comes down to this:
Add the following line to /etc/modprobe.d/alsa-base.conf :
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