Method of and apparatus for controlling sound field through...

Details Method of and apparatus for controlling sound field through... Method of and apparatus for controlling sound field through...

2008-04-30

2011-10-25

Nguyen, Dao H (Department: 2818)

Electrical audio signal processing systems and devices

Monitoring/measuring of audio devices

C381S080000, C381S098000, C381S099000, C381S100000, C381S123000, C381S124000, C381S182000, C381S346000, C381S347000, C381S357000, C381S358000, C700S055000, C700S068000, C700S094000

Reexamination Certificate

active

08045722

ABSTRACT:
Provided are a method and apparatus for controlling a sound field through an array speaker. The method includes calculating a coefficient of a filter that controls sound pressure of an input signal, based on a sound pressure ratio of a suppression area that suppresses sound emitted from an array speaker and an emphasis area that emphasizes the sound, and sound pressure efficiency in the emphasis area, generating a plurality of output signals that focuses the sound to the emphasis area by filtering the input signal based on the calculated coefficient of the filter, and outputting a sound field controlled sound based on the generated plurality of output signals. Accordingly, a listener in a predetermined direction and distance from the array speaker can clearly hear sound, without wearing an earphone or a headset so as to focus the sound only to the listener.

REFERENCES:
patent: 7158643 (2007-01-01), Lavoie et al.
patent: 7769183 (2010-08-01), Bharitkar et al.
patent: 2009/0141915 (2009-06-01), Ko et al.
patent: 2010/0150382 (2010-06-01), Ko et al.

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