Acoustic device relying on bending wave action

Details Acoustic device relying on bending wave action Acoustic device relying on bending wave action

H - Electricity

04

R

H04R 7/06 (2006.01) H04R 7/04 (2006.01) H04R 7/22 (2006.01)

Patent

CA 2326161

Acoustic device comprising a member relying on bending wave action with beneficial distribution of resonant modes thereof, wherein the member has its acoustically active area at least partly bounded by means having a substantially restraining nature in relation to bending wave vibration. Operation can be below coincidence, or above if desired for active acoustic device further having beneficial location of bending wave transducer means determined with reference to and taking account of such bounding means.

Ce dispositif acoustique comporte un élément reposant sur l'action d'une onde de flexion avec répartition avantageuse des modes résonnants de celle-ci. La région active du point de vue acoustique de cet élément est, au moins en partie, encadrée par des moyens de nature sensiblement restrictive relativement à la vibration de l'onde de flexion. Le dispositif est susceptible de fonctionner, le cas échéant, en dessous ou au-dessus de la fréquence de coïncidence et ce, pour un dispositif acoustique actif dont les structures de transduction d'onde de flexion sont avantageusement situées, cet emplacement étant déterminé en tenant compte de l'encadrement.

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