Speaker system

Details Speaker system Speaker system

2011-06-21

2011-06-21

Ensey, Brian (Department: 2614)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Pseudo stereophonic

C381S300000, C381S303000

Reexamination Certificate

active

07965847

ABSTRACT:
A speaker system includes a main speaker and a subordinate speaker arranged around the main speaker. A pseudo-spherical wave is generated around the main speaker as a whole such that both speakers are vibrated in the frequency range of piston vibration and are in phase and that the propagation speed of a sound wave produced by the vibration of the subordinate speaker is preferably lower than the propagation speed of a sound wave produced by the vibration of the main speaker.

REFERENCES:
patent: 4322678 (1982-03-01), Capots et al.
patent: 4440259 (1984-04-01), Strohbeen
patent: 6215883 (2001-04-01), Leonarz
patent: 05-103391 (1993-04-01), None
Official communication issued in counterpart European Application No. 04 000 774.2, mailed on Feb. 3, 2009.
Nakamura; “Speaker System”; U.S. Appl. No. 10/733,040, filed Dec. 11, 2003.

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