Sound field control unit and sound field control device

Details Sound field control unit and sound field control device Sound field control unit and sound field control device

1997-05-21

2000-06-06

Chang, Vivian

Electrical audio signal processing systems and devices

Sound effects

381103, H03G 300

Patent

active

060728795

ABSTRACT:
A sound field control unit includes a microphone collecting sound about a self-unit, a collected sound signal input-output terminal for outputting a collected sound signal of the self-unit to outside of the self-unit and inputting a collected sound signal of other units to the self-unit, a collected sound signal switch for switching the collected sound signal collected by the self-unit and that collected by the other units sequentially and repeatedly, an FIR filter for producing a reflected sound component of the collected sound signals provided by the switch and imparting it to the collected sound signals, an amplifier for amplifying the imparted reflected sound component and the collected sound signal, an equalizer provided in a signal path between an output terminal of the collected sound signal switch and an input terminal of the amplifier for adjusting frequency characteristic of a signal flowing through the signal path, and a loudspeaker for reproducing the amplified output signal. These components are assembled integrally together in the self-unit and the self-unit is adapted to be connected to the other units through the collected sound signal input-output terminal by means of transmission cables.

REFERENCES:
patent: 5065432 (1991-11-01), Sasaki et al.
patent: 5073942 (1991-12-01), Yoshida et al.
patent: 5123051 (1992-06-01), Koinuma
patent: 5257313 (1993-10-01), Fujishita et al.
patent: 5633993 (1997-05-01), Redmann et al.

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