#9639 NORM 1.5-F11: tweak microphone bias settings

[Zarro Boogs per Child]

#9639: tweak microphone bias settings
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 Reporter:  dsd     |                 Owner:  dsd          
     Type:  defect  |                Status:  new          
 Priority:  normal  |             Milestone:  1.5-F11      
Component:  kernel  |               Version:  not specified
 Keywords:          |           Next_action:  communicate  
 Verified:  0       |   Deployment_affected:               
Blockedby:          |              Blocking:               
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 Our conexant contacts suggested reducing the microphone bias to 50%
 because of the DC coupling.

 I've written a patch to do this but waiting on feedback from conexant
 before applying -- should we also be adjusting the internal mic bias?

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Ticket URL: <http://dev.laptop.org/ticket/9639>
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