NOVEL APPROACH FOR ENABLING MIXED MODE BEHAVIOR USING MICROPHONE PLACEMENT ON RADIO TERMINAL HARDWARE

摘要

Method for operating a portable communication device (PCD) (100) such as a land mobile radio (LMR) involves, when operating the PCD in a half-duplex mode, a first speaker (330) adjacent a first end of the PCD being selectively used to reproduce received audio. In this mode, a first microphone (324a) is used to acquire a transmitted audio input for the PCD, and a second microphone (325) is used to acquire audio information for a first noise cancellation process. Conversely, when operating the PCD in a full-duplex mode of communicating, the function of the first and second microphones are reversed so that the second microphone is used to acquire a transmitted audio input for the PCD, and the first microphone is used for a second noise cancellation process.

主权项

1. A method for operating a portable communication device (PCD), comprising
when operating the PCD in a half-duplex mode of communicating,
selectively using a first speaker to reproduce received audio,selectively using at least a first microphone to acquire a transmitted audio input for the PCD, andselectively using a second microphone, to acquire audio information for a first audio processing algorithm selected from the group consisting of a noise cancellation process and an echo cancellation process; and when operating the PCD in a full-duplex mode of communicating, automatically selectively modifying the function of the first and second microphone so that the first and second microphones are each used for a function different as compared to operations in the half-duplex mode of communicating.