Safety device and method for emitting a directional acoustic...

G - Physics – 10 – K

Patent

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G10K 11/26 (2006.01) G10K 1/34 (2006.01)

Patent

CA 2617562

The present invention relates to a safety device for emitting a substantially tonal acoustic alarm signal, the device comprising: - a sound source for generating an acoustic alarm signal, - directing means for directing the alarm signal in substantially one or more preferred directions and attenuating the alarm signal in the other directions. The invention also relates to a method for emitting a substantially tonal acoustic alarm signal, comprising of: - generating an acoustic alarm signal, - directing the alarm signal in substantially one or more preferred directions and attenuating the alarm signal in the other directions.

L'invention concerne un dispositif de sécurité servant à émettre un signal d'alarme acoustique sensiblement tonal. Le dispositif de sécurité selon l'invention comprend : une source sonore servant à générer un signal d'alarme acoustique ; un moyen de direction servant à diriger le signal d'alarme dans sensiblement une ou plusieurs directions préférées, et à atténuer le signal d'alarme dans les autres directions. La présente invention se rapporte également à un procédé pour émettre un signal d'alarme acoustique sensiblement tonal, ce procédé consistant : à générer un signal d'alarme acoustique ; à diriger le signal d'alarme dans sensiblement une ou plusieurs directions préférées, et à atténuer ce signal d'alarme dans les autres directions.

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