Audio Filter (+WADF)


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,

Hi Mark,

Have you checked the AT cmd guide?,-d-,51%20AT%20Command%20Interface%20Guide.aspx



I have indeed. They describe the actual command very well, but do not provide an explanation for the parameters (just give the ranges of them).