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    • 8. 发明授权
    • Sound reproduction device
    • 声音再现设备
    • US4394536A
    • 1983-07-19
    • US272548
    • 1981-06-11
    • Kenji ShimaMasahiro Hibino
    • Kenji ShimaMasahiro Hibino
    • H04S1/00H04R5/00
    • H04S1/002
    • A sound reproducing device adapted to be operated in a narrow space such as the passenger compartment of an automobile including a voltage amplifying or attenuating circuit for varying a difference signal between stereophonic right and left signals and a filter circuit. The voltage amplifying or attenuating circuit and filter circuit are provided in a circuit which produces a reverberation effect and an acoustic spreading effect for reproduced sound to decrease the closed-room effect. Each of these circuits is provided with a varible resistor, wherein the listener can vary the reverberation and acoustic spreading effects as desired.
    • 一种声音再现装置,适于在诸如汽车的乘客室的狭窄空间中操作,包括用于改变立体声左右信号之间的差分信号的电压放大或衰减电路和滤波器电路。 电压放大或衰减电路和滤波电路设置在产生混响效果和再现声音的声扩展效果的电路中,以减少闭室效应。 这些电路中的每一个设置有可变电阻器,其中听众可以根据需要改变混响和声音扩展效果。