Acoustically generated images having selected components

A - Human Necessities – 61 – B

Patent

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A61B 8/00 (2006.01) A61B 1/00 (2006.01) G03H 3/00 (2006.01) H04R 1/34 (2006.01)

Patent

CA 2463576

An acoustically generated image includes only selected acoustical components. When an original acoustic signal interacts with an object, the resultant acoustic signal comprises a diffracted component and an undiffracted component. The acoustical images of the present invention are generated with either the diffracted component only or the undiffracted component only. In an alternative embodiment, the acoustically generated image may comprise selected frequency component(s) from the diffracted component of the acoustic signal.

L'invention concerne une image produite par voie acoustique comprenant uniquement des composantes acoustiques s~lectionn~es. Lorsqu'un signal acoustique s~lectionn~ interagit avec un objet, le signal acoustique obtenu comprend une composante diffract~e et une composante non diffract~e. Les images acoustiques de l'invention sont produites soit uniquement avec la composante diffract~e soit uniquement avec la composante non diffract~e. Dans un autre mode de r~alisation, l'image produite par voie acoustique peut comprendre une ou des composantes de fr~quence s~lectionn~es provenant de la composante diffract~e du signal acoustique.

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