Patent ID: 6768776
Filing Date: 2004-07-27
Classification: H04M

Abstract:
A transcoder-codec circuit arrangement that supports voice-switched hands-free radio operation, comprising:a first register arranged to store a value indicative of a peak signal in a receive signal path; a first attenuator coupled to the receive signal path; a second register arranged to store a value indicative of a peak signal in a transmit signal path; a second attenuator coupled to the transmit signal path; a digital signal processor coupled to the first and second registers and configured and arranged to update the value in the first register with a present peak receive signal level if the value in the first register is less than the present peak receive signal level, and arranged to update the value in the second register to a present peak transmit signal level if the value in the second register is less than the present peak transmit signal level; and a microcontroller coupled to the first and second registers and to the first and second attenuators and configured to read values from the first and second register and adjust the first and second attenuators in response to the values.