Method for controlling multi-mode audio gain balance

Details Method for controlling multi-mode audio gain balance Method for controlling multi-mode audio gain balance

2006-08-01

2006-08-01

Grier, Laura A. (Department: 2644)

Electrical audio signal processing systems and devices

Circuitry combined with specific type microphone or loudspeaker

C381S107000, C381S091000

Reexamination Certificate

active

07085390

ABSTRACT:
A method for controlling audio gain balance in a multi-mode communications device (200) includes providing (201) microphone audio input to the multimode communications device. The audio is supplied to an amplifier gain stage while a dynamic instantaneous energy value of the audio input is computed (203) when in a first operational mode such as an analog mode. A predetermined gain algorithm is processed (207) representing an audio input when in a second mode such as a digital mode using the energy value. The audio gain stage in the multi-mode communications device is then adjusted (209) so that audio gain when in the first mode substantially approximates an audio gain when in an second mode. This provides a consistent audio amplitude output when receiving the first and second modes in a radio receiver.

REFERENCES:
patent: 6049722 (2000-04-01), Umemoto et al.
patent: 6256511 (2001-07-01), Brown et al.
patent: 6636609 (2003-10-01), Ha et al.

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