Sound field control device

Details Sound field control device Sound field control device

1996-09-04

1997-06-24

Kuntz, Curtis

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 94, 381 83, 381 93, 84630, H03G 300, H04B 1500

Patent

active

056424256

ABSTRACT:
A sound field control device includes an acoustic feedback signal path including a chamber and one or more loudspeaker or loudspeakers and one or more microphone or microphones provided in the chamber, the loudspeakers being disposed at a predetermined distance from the microphones, and at least either the loudspeakers or the microphones being provided in the plural, an electrical feedback signal path for feeding back a collected sound signal collected by the microphone or microphones to the loudspeaker or loudspeakers, and a collected sound signal supply control circuit provided in the electrical feedback signal path for changing, with lapse of time, a signal level of each collected sound signal fed back from the microphones to the loudspeakers. The transmission route of the collected sound signal is completely switched or the ratio of distribution of the collected sound signal is changed. Coloration in hearing is thereby reduced and a margin of howling is expanded without causing unnaturalness in hearing.

REFERENCES:
patent: 4581759 (1986-04-01), Takahashi
patent: 4727581 (1988-02-01), Bray
patent: 5025472 (1991-06-01), Shimizu et al.
patent: 5091983 (1992-02-01), Tretter
patent: 5187692 (1993-02-01), Waneda et al.
patent: 5201005 (1993-04-01), Matsushita et al.
patent: 5325437 (1994-06-01), Doi et al.
DC-Controlled Audio Switches and Filter Electronics Components and Applications. vol. 2 No. 1., Nov. 1979.

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