Teleconference microphone arrays

Details Teleconference microphone arrays Teleconference microphone arrays

H - Electricity

04

R

179/4, 379/87

H04R 1/40 (2006.01) B06B 1/08 (2006.01)

Patent

CA 1166166

A B S T R A C T - - - - - - - - A directional array of transducers is disclosed. Acoustic transducers are arranged colinearly and in pairs symmetrically about a center line of the directional array. The distances of the acoustic transducers on either side of the center line of the array are neither linear nor monotonic. These distances are calculated using a recursive far field response formula which effectively reduces sidelobe magnitudes to a desired design amplitude envelope. The response produced is highly directional, comprising one main lobe and a plurality of sidelobes each less than the desired design envelope, which is substantially lower than the main lobe but of arbitrary (e.g., stepped) shape.

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