[alsa-devel] Microphone bias

Daniel Drake dsd at laptop.org
Mon Jul 13 10:50:45 CEST 2009


I'm working on CX20582 HDA support for OLPC.

We have a choice of 50% or 80% microphone bias on the 2 microphone ports
(one inbuilt, one socket for external devices). Any suggestions on which
one we should pick or how to decide?

We can't hear any difference between the 2 settings..should we choose
50% for potential power savings?


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