Patent ID: 7925221
Filing Date: 2011-04-12
Classification: H04B,H04R

Abstract:
1. An apparatus comprising: a transmit acoustic transducer circuit coupled to convert acoustic waves into an electrical audio signal; a digital conversion module coupled to the transmit acoustic transducer circuit to convert the electrical audio signal into a digital audio signal and also coupled to convert a down-converted receive signal into a digital receive baseband or intermediate frequency (IF) signal, the digital conversion module including a combining module to combine the electrical audio signal with the down-converted receive signal to produce a combined signal, an analog to digital conversion module coupled to convert the combined signal into a digital combined signal, and a separation module coupled to separate the digital combined signal into the digital audio signal and the digital receive baseband or IF signal; a transmit baseband processing module coupled to the digital conversion module to convert the digital audio signal into a digital transmit baseband or IF signal; a receive baseband processing module coupled to the digital conversion module to convert the digital receive baseband or IF signal into a digital receive signal; and an analog conversion module coupled to the transmit baseband processing module to convert the digital transmit baseband or IF signal into an analog transmit baseband or IF signal and also coupled to the receive baseband processing module to convert the digital receive signal into an analog receive signal.