A Volume Control Unit Based on TMS320C54

摘要

A unit controlling the volume of audio system in an automobile is designed. Main component in the unit is TMS320C54. We will realize an adaptive algorithm with the chip to distinguish noise from outside and signal from the audio system. And the volume is controlled by signal to noise ratio (SNR). One microphone should be located at somewhere in automobile. The unit picks up electrical signal from the microphone and electrical signals at all speakers in the audio system. Multi-channel signal will be considered in the adaptive algorithm. We should decrease complexity of the algorithm as lower as possible with regard of our specific problem so that a TMS320C54 chip can implement the algorithm.