Audio Filter (+WADF)

Legacy Open AT
1

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

2

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.

3

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