Directivity controlling apparatus

Details Directivity controlling apparatus Directivity controlling apparatus

1997-12-24

1999-11-02

Lee, Ping

Electrical audio signal processing systems and devices

Directive circuits for microphones

381107, 381120, H04R 300

Patent

active

059784903

ABSTRACT:
A directivity controlling apparatus and method of a microphone system for collecting audio signals in an audio recording/reproducing system. A certain microphone in the system is selected to have directivity according to a result of comparing levels of input signals supplied into plural partial microphones in a supervisory mode by categorizing directional microphones into a directional mode and the supervisory mode. An automatic shift operation is performed during the supervisory mode, in which audio signal levels received via the plural partial microphones are compared to select a certain microphone to have the specific directivity and, then, the input level of the particular microphone having the directivity is monitored to repeat the supervisory mode according to the monitored input level.

REFERENCES:
patent: 5208864 (1993-05-01), Kaneda
patent: 5414776 (1995-05-01), Sims, Jr.
patent: 5602962 (1997-02-01), Kellermann
patent: 5673327 (1997-09-01), Julstrom

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