Abstract:
A method and apparatus for distinguishing voice signals that are played together over the same speaker employs spectral reshaping of one or more of the audio signals. The spectral reshaping shifts modifies the timber of the voice signal while not modifying the pitch of the voice signal. Additional techniques can be used to further distinguish voice signals, such as dynamic gain offset and frequency shifting. After processing one or more signals to spectrally reshape them, they can be played over the same speaker. A user hearing the resulting acoustic signal will be more able to distinguish between the multiple voice signals being played.
Abstract:
A portable radio communication device is provided that receives communications on a primary channel and a secondary channel as part of a dual-watch mode of operation. The portable radio communication device detects a gesture associated with the portable radio communication device and identifies a channel from one of the primary channel and the secondary channel corresponding to the detected gesture. Further, the portable radio communication device associates controls of a user interface in the portable radio communication device to the identified channel for controlling one or more operational parameters pertaining to the identified channel during the dual-watch mode of operation.