Acoustic device according to bending wave principle

Details Acoustic device according to bending wave principle Acoustic device according to bending wave principle

H - Electricity

04

R

H04R 7/12 (2006.01) H04R 1/02 (2006.01) H04R 1/22 (2006.01) H04R 1/28 (2006.01) H04R 7/04 (2006.01) H04R 7/06 (2006.01)

Patent

CA 2349861

An acoustic device has an outer shell (1) supporting bending waves and enclosing a volume (2). The bending waves couple to the enclosed volume to provide coupled resonant modes. A transducer (3, 5) is coupled to the shell to excite the coupled resonant modes. The coupling of the enclosed volume can improve the distribution of resonant modes.

L'invention concerne un dispositif acoustique qui comporte une enveloppe extérieure (1) supportant des ondes de flexion, et qui définit un volume (2). On assiste à un couplage des ondes de flexion au niveau du volume intérieur en vue d'assurer un couplage des modes résonnants. Un transducteur (3), (5), couplé à l'enveloppe, permet d'exciter les modes résonnants couplés. Le couplage du volume intérieur est destiné à améliorer la distribution des modes résonnants.

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