NOVEL APPROACH FOR ENABLING MIXED MODE BEHAVIOR USING MICROPHONE PLACEMENT ON RADIO TERMINAL HARDWARE
First Claim
1. A method for operating a portable communication device (PCD), comprisingwhen 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;
- andwhen 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.
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Accused Products
Abstract
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.
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Citations
21 Claims
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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, and selectively 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for operating a land mobile radio (LMR), comprising
in a half-duplex mode, reproducing output audio by communicating a high band portion of the output audio signal to a first speaker adjacent a first end of the LMR and concurrently communicating a low band portion of the output audio signal to a second speaker, the high band portion containing a higher range of audio frequencies as compared to the low band portion; -
in a full-duplex mode, reproducing said output audio by communicating a full bandwidth audio signal exclusively to the first speaker, said full bandwidth audio signal comprising audio frequencies of said high band and said low band; in the half-duplex mode of communication, selectively using at least a first microphone to acquire a transmitted audio input for the LMR, and selectively using a second microphone adjacent to a second end of the LMR opposed from the first end, to acquire audio signals for a first audio processing algorithm noise cancellation process; and automatically selectively controlling the function of the first and second microphone so that in the full duplex mode, the second microphone is used to acquire a transmitted audio input for the LMR, and the first microphone is used for a second audio processing algorithm different from the first audio processing algorithm. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification