This application note shows how to use low-power CC111x and CC251x SoC RF transceivers to provide a low-cost 16-bit 16-kHz audio to USB interface.    Sample code and hardware designs are given for the 900 MHz ISM bands using the CC1110 and CC1111;   these can be easily modified for the 2.4GHz ISM band using the CC2510 and CC2511.

http://www-s.ti.com/sc/techlit/swra368

Download associated code files:  http://www-s.ti.com/litv/zip/swra368