Method and apparatus for providing a sidetone in a wireless communication device

摘要

A wireless communication device is disclosed that provides a sidetone to the device user. The device converts an outbound analog audio signal to an outbound audio bitstream from which a sidetone bitstream is extracted. The device also converts an inbound digital audio signal to an inbound audio bitstream. A filter in the device both adds the sidetone bitstream to the inbound audio bitstream and filters the resultant added bitstreams to provide an analog audio signal with sidetone.