Rotary low-frequency sound reproducing apparatus and method

Details Rotary low-frequency sound reproducing apparatus and method Rotary low-frequency sound reproducing apparatus and method

H - Electricity

04

R

H04R 23/00 (2006.01) G10K 7/04 (2006.01) H02K 37/24 (2006.01)

Patent

CA 2156166

Apparatus (21) is described for reproducing low frequency sound in response to an applied electrical signal having a rotary acoustic radiator (22) comprised of a chamber (26) having a rotor assembly (58) including a shaft (61) and movable vanes (71, 72) secured to the shaft rotatably mounted in chamber for rotation on a longitudinal axis. Stationary vanes (62, 63) are mounted in the chamber and extend generally radially between the chamber walls and the shaft. The chamber has ports (64, 66, 67, 68) therein opening into the chamber and disposed adjacent the stationary vanes on opposite sides of said stationary vanes. The movable vanes are disposed on opposite sides of the stationary vanes and extend generally radially between the chamber walls and the shaft.

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