MULTIPLE VOICE REALIZING DEVICE AND METHOD OF A VEHICLE CD-PLAYER

摘要

PURPOSE: A multiple voice realizing device of a vehicle CD-player is provided to realize a multiple voice function without a use of a complex circuit by selectively outputting voice signals of L and R channels according to a key input of a user. CONSTITUTION: The multiple voice realizing device of a vehicle CD-player comprises: a data encoding part(10) which reads data stored in a CD; an amplification part(20) which amplifies voice and image data encoded by the data encoding part; an error correction part(30) which corrects an error when an error is generated at a frame of the amplified data; a CD micom(40) which controls an overall operation of the error correction part; an MPEG decoder part which decompresses the compressed audio and video data; a boot ROM(60) which stores a program for operating the MPEG decoder part; an 4M RAM(70) which temporally stores data generated at decoding the compressed data; an MPEG CPU(80) which controls an overall operation of the MPEG decoder part; a RAM which stores a program for driving the MPEG CPU; an SRAM(100) which temporally stores data generated at driving the MPEG CPU; a video low pass filter(200) part which eliminates a noise of a video signal from the MPEG decoder part; a D/A converting part(300) which converts a digital signal of an audio from the MPEG decoder part to an analog signal; an audio low pass filter part(400) which eliminates a noise of the converted audio signal; and a key select part(500) which selects a voice to be listened by a user.