Modify OpenMoko GSM voice

[Ian Stirling]

David daviD wrote:
> I am trying to determine if the OpenMoko GSM voice can be modified by software.
> I have heard "it is possible" and "it is impossible". One of these is true.
> Does anyone know any details about how it is possible?
> 
> The CODEC details are here:
> http://www.wolfsonmicro.com/uploads/documents/en/WM8753.pdf
> 
> Looking at the OpenMoko audio path, it seems that there is no way to
> modify GSM voice.
>

That's the default audio path.
The audio path can be configured to go through a A/D and D/A.