Vehicle audio system and noise removal method thereof

摘要

A vehicle audio system includes: a tune knob configured to select a frequency of a desired radio broadcast; a microcomputer configured to detect a broadcast frequency input through the tune knob and to determine an optimal sampling frequency of a full digital amplifier based on the detected broadcast frequency; a tuner configured to receive only a broadcast signal corresponding to the frequency selected through the tune knob; and the full digital amplifier configured to generate a digital signal by sampling the broadcast signal received by the tuner at the optimal sampling frequency determined by the microcomputer and to amplify and output the generated digital signal.

主权项

1. A vehicle audio system, comprising:
a tune knob configured to select a frequency of a desired radio broadcast; a microcomputer configured to detect a broadcast frequency input through the tune knob and to determine an optimal sampling frequency of a full digital amplifier based on the detected broadcast frequency; a tuner configured to receive only a broadcast signal corresponding to the frequency selected through the tune knob; and the full digital amplifier configured to generate a digital signal by sampling the broadcast signal received by the tuner at the optimal sampling frequency that is previously determined and stored in a map by the microcomputer before the full digital amplifier samples the broadcast signal of the tuner and to amplify and output the generated digital signal, wherein the microcomputer is configured to store the map that is previously set by confirming the optimal sampling frequency not influenced by noise at every broadcast frequency of a predetermined band, and when a broadcast frequency is input from the tune knob, the map stored in the microcomputer outputs the optimal sampling frequency matched to the input broadcast frequency.