Hi,
I would like to attempt a better audio quality on a hands free kit type setup for in-vehicle use that has loud engine and road noise.
Enabling the audio tx high pass filter (at+wadf=1,1) with default values appears to improve the audio quality. However, there is space for improvement, but I can not find any description of the filter parameters anywhere, so that I can try attempt to adjust them for better quailty.
Anyone have any ideas on what the different parameters are?
Kind Regards,
Mark