Optimum driver spacing for a line array with a minimum...

Details Optimum driver spacing for a line array with a minimum... Optimum driver spacing for a line array with a minimum...

2007-08-21

2007-08-21

Swerdlow, Daniel (Department: 2615)

Electrical audio signal processing systems and devices

Having non-electrical feature

Loudspeakers driven in given phase relationship

C381S182000, C381S387000

Reexamination Certificate

active

10796199

ABSTRACT:
The loudspeaker has a first pair of drivers arranged in a line, a center point along the line, wherein the pair of drivers are substantially centered about the center point with a center to center distance, d0, between the drivers in the first pair of drivers, whereby the maximum frequency with out high amplitude side lobes is equal to c/2d0, and at least a subsequent pair of drivers arranged in the line array with the first pair of drivers and substantially centered about the center point, wherein the subsequent pair of drivers are spaced such that the center to center distance between each driver in the subsequent pair, dn, is equal to 4nd0, where n=0 at the innermost pair of drivers and n increases by 1 with each pair of drivers sequentially added. Each pair of drivers for n>0 has a first order low pass filter with a frequency equal to 2c/dn.

REFERENCES:
patent: 4363115 (1982-12-01), Cuomo
patent: 4653606 (1987-03-01), Flanagan
patent: 4991687 (1991-02-01), Oyaba et al.
patent: 5359664 (1994-10-01), Steuben
patent: 5568560 (1996-10-01), Combest
patent: 6128395 (2000-10-01), De Vries

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