Speaker system

Details Speaker system Speaker system

2003-12-11

2008-11-04

Ensey, Brian (Department: 2615)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Pseudo stereophonic

C381S300000, C381S303000

Reexamination Certificate

active

07447316

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: 6801631 (2004-10-01), North
patent: 02-239798 (1990-09-01), None
patent: 05-103391 (1993-04-01), None
patent: 11-196485 (1999-07-01), None
Shigenobu Tsuji, “Audio & Video”, Denkidenshikogaku-Daihyakkajiten, vol. 25, Nov. 1983, from Denkishain, pp. 147-158.
NHK, “Onkyo-kiki”, Hosogijutsusosho, Issue Jul. 1, 1963. from Gihodou, pp. 194-195, 236-255.

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