Audio Filter (+WADF)

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

Hi Mark,

Have you checked the AT cmd guide?
http://developer.sierrawireless.com/Resources/Resources/AirPrime/Software/AirPrime%20-%20Firmware%20R7,-d-,51%20AT%20Command%20Interface%20Guide.aspx

Thx.

Hi,

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).

Thanks,
Mark