| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide methods of installing and driving a speaker which can form a natural sound field in a closed space. <P>SOLUTION: For main speakers SPA, SPB for reproducing sounds in a vehicle room 10, first auxiliary speakers SPA 1, SPB1 are provided in this vehicle room 10. Sounds having the same frequency band as that of the sounds outputted from the main speakers SPA, SPB are outputted from the auxiliary speakers SPA1, SPB1. The sound output of the first auxiliary speakers SPA1, SPB1 are set so that sound pressures of the sounds coming from the first auxiliary speakers of the SPA1, SPB1 to a listener L may be almost the same as the sound pressures of the sounds coming from the main speakers SPA, SPB. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
