Multi-channel audio center speaker device

Electrical audio signal processing systems and devices – Having non-electrical feature – And loudspeaker

Reexamination Certificate

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Details

C381S186000, C381S351000, C181S145000, C181S199000

Reexamination Certificate

active

06940990

ABSTRACT:
This invention discloses a multi-channel audio center speaker device that has a low-frequency sound box working together with a mid-frequency sound box each on both sides, and the low-frequency sound box works with a high-frequency sound box having a forward sound direction and a mid-frequency sound box having a backward sound direction, and both sound boxes are tilted up to an appropriate angle such that after the sound frequencies are mixed, the audio image provided by the sound frequency of the mixed sound is extended backward through the mid/high frequency speaker, and then the image at the back is reflected to the audience in the front, such that the position of placing the center sound box becomes more flexible, and produces a sound together with the simulated video screen at the back. In the meantime, the present invention can reduce or eliminate the impact of the sound being acted directly on the audience to prevent uneasiness and broaden the range of the multi-channel audio sound.

REFERENCES:
patent: 3582553 (1971-06-01), Bose
patent: 4006311 (1977-02-01), Carlsson
patent: 4051919 (1977-10-01), Buettner
patent: 4119799 (1978-10-01), Merlino
patent: 4122315 (1978-10-01), Schroeder et al.
patent: 4266092 (1981-05-01), Barker, III
patent: 4451928 (1984-05-01), Murayama
patent: 4884655 (1989-12-01), Freadman et al.
patent: 6243477 (2001-06-01), Ruiz
patent: 6719090 (2004-04-01), Tracy
patent: 6778675 (2004-08-01), Maruo

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