| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an "audiovisual system", which changes automatically the sound field formed by sound outputted from a speaker, in response to a situation whether the passenger at a rear seat in a vehicle is using a headphone. <P>SOLUTION: When a passenger at a rear seat connects a headphone 7 to a rear operation unit 30, a signal indicative of using of the headphone is outputted from the rear operation unit 30 to a front operation unit 10. According to the signal, a signal for directing switch-over to the sound field of preferred front seat is outputted from the a front operation unit 10 to an amplifier unit 50. According to the signal, a built-in sound field processing portion in the amplifier unit 50 changes over the sound field pattern used for sound field processing and conducts sound field processing. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
