A method for analyzing an acoustical environment and a...

Details A method for analyzing an acoustical environment and a... A method for analyzing an acoustical environment and a...

H - Electricity

04

R

H04R 29/00 (2006.01) G01S 3/808 (2006.01) G01S 5/20 (2006.01) G10L 15/28 (2006.01) H04R 3/00 (2006.01) H04R 25/00 (2006.01)

Patent

CA 2390844

So as to discriminate acoustical signals not only as a function of the angular impinging direction, but also as a function of the distance of an acoustical signal's source, the acoustical signals are registered by at least two mutually distant acoustical/electrical converters (1, 2), and from the output signals thereof the distance is calculated electronically (S3). The distance- representing signal is then amplitude filtered (6), and at least one of the output signals of the acoustical/electrical converters (1, 2) is weighted (8) by the amplitude filtered distance-indicating signal, before beam forming is realized.

Afin de distinguer les signaux acoustiques non seulement en tant que fonction de la direction d'incidence angulaire, mais également comme fonction de la distance par rapport à une source d'un signal acoustique, les signaux acoustiques sont enregistrés par au moins deux convertisseurs (1, 2) acoustique/électrique éloignés l'un de l'autre, et la distance est calculée électroniquement (S¿3?) à partir des signaux de sortie de ces convertisseurs. Le signal représentant la distance est alors filtré par amplitude (6), et au moins un des signaux de sortie des convertisseurs (1, 2) acoustique/électrique est pondéré (8) par le signal représentant la distance filtré par amplitude, avant que la formation du faisceau ne soit effectuée.

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