Title: Motor vehicle acoustic capable of regulating volume automatically
Application Number: 200510098276 Application Date: 2005.09.05
Publication Number: 1761150 Publication Date: 2006.04.19
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03G3/20,B60R11/02
Applicant(s) Name: Baili Tech Co., Ltd., Ningbo Address: 315103
Inventor(s) Name: Lin Rongmin
Attorney & Agent: huang ting
Abstract:
     The motor vehicle acoustics includes Hall sensor, comparator, CPU, MP3 decoder, pre amplification circuit, digital audio processor, and power amplifier. Through Hall sensor, the acoustics sends out impulse signal. Then, comparator magnifies the impulse signal; and the impulse signal triggers CPU. Based on the impulse signal, CPU carries out counting, and controls digital audio processor to raise volume automatically. Advantages are: simple operation, easy of installation; volume magnitude of acoustics system can be regulated automatically as drive speed changed; the acoustics system can play MP3 and music files stored in U disk or SD card as well as can listen music from walkman through AUX interface.
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