End-fire microphone and loudspeaker structures

Details End-fire microphone and loudspeaker structures End-fire microphone and loudspeaker structures

H - Electricity

04

R

400/4601, 349/49

H04R 1/00 (2006.01) H04R 1/34 (2006.01)

Patent

CA 1177574

END-FIRE MICROPHONE AND LOUDSPEAKER STRUCTURES Abstract Highly directional response patterns can be obtained by connecting microphones or loudspeakers with tubular coupling path structures. The coupling paths comprise a plurality of elements arranged in pairs so that for every element below a center line there is an element above the line. Furthermore, the relationship between the element pairs is nonlinear. The desired directional response comprises one main lobe and a plurality of substantially smaller lobes below a determinable threshold value. The elements may be a bundle of tubes or a plurality of apertures in a single tube.

404315

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