I have a question/issue regarding the AGC parameters as they apply to Conferencing on a DMV1200BTEPE board.
I want to allow my application to control volume levels for individual conferees, and have added a call to the dcb_SetPartyParm() with the MSPA_OUTPUTVOLABS parameter. The documentation indicates that I should be able to set levels from -24db to +12db. What I see in my results is that anything above a value of 6 has no effect.
I can see volume changes from 0-6db higher than the default, but not up to the expected 12db. And, from a recorded point-of-view, what I'm really seeing is a range of -24db to -18db, which leads me to believe that the parameter is relative to the target AGC level. And that would be ok, except that I cannot seem to get the range I need.
So I looked into the AGC parameters prmAGCk and prmAGCmax_gain to see if I could adjust up the target level. It seems that any change to these parameters in the encoder section of the .config file yields no changes to the resulting levels. (the fcd file gets generated, it seems, automatically upon restarting the DCM).
Should I expect these parameters to work on this specific board (DMV1200BTEPE), and is there some additional step I may be forgetting?
Thanks for reading this far,
Best Regards,
Rick