Electrical audio signal processing systems and devices – Having non-electrical feature – Loudspeakers driven in given phase relationship
Patent
1990-07-23
1991-12-17
Dwyer, James L.
Electrical audio signal processing systems and devices
Having non-electrical feature
Loudspeakers driven in given phase relationship
381158, 381159, 381184, 381186, H04R 124, H04R 128
Patent
active
050739450
ABSTRACT:
An improved dipole type characteristic loudspeaker system has a pair of loudspeakers (1 and 2) which are mounted on the front baffle board (4) and the back baffle board (5) of a console (3) and are connected to be driven in each-other opposite phase relation and have substantially the same acoustic characteristics in the medium and high frequency range but different acoustic characteristic in low frequency range; such loudspeaker system produces good surround-sound effect when used as back loudspeakers only with small number.
REFERENCES:
patent: 41467444 (1979-03-01), Veranth
patent: 1969704 (1964-08-01), D'Alton
patent: 4783820 (1988-11-01), Lyngdorf et al.
patent: 4799264 (1989-01-01), Plummer
patent: 4805221 (1989-02-01), Quaas
patent: 4987601 (1991-01-01), Goto
R. J. Newman, "Dipole Radiator Systems", J. Audio Eng. Soc., vol. 28 pp. 35-39, (1980 Jan.Feb.).
Fukuhara Suemei
Kageyama Satoshi
Dwyer James L.
Le Huyen D.
Matsushita Electric - Industrial Co., Ltd.
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