03-21-2012 11:22 AM
I've passed all this on to one of our Audio Engineers for review. I'll let you know what I get back from them, and what resolution options we have.
05-09-2012 05:16 PM
I apologize, I wasn't able to look at this very much with the BB10 Jam conference.
This is the response that I got from the audio engineer:
The schematic provided is incomplete, as Left, Right and Mic are left open, what they are connected to will impact detection; I am assuming it is an active circuit of some sort. The 200nF caps on L and R will cause us issues.
To form a LPF, the designers of this dongle should not rely on the output impedance of the headphone amp but implement differently; I am speculating given the diagram attached off course.
In short, please provide:
- Complete schematic
- Sample for us to look at