Method and apparatus for processing sound

G - Physics – 10 – K

Patent

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G10K 11/178 (2006.01) A61F 11/14 (2006.01)

Patent

CA 2272893

The invention relates to a method and an apparatus for sound processing, where sound is attenuated by measuring it and by producing with an actuator a sound field of opposite sign in view of the original sound field. A desired value signal (I) is supplied to the actuator which reproduces the signal. To the actuator is attached a sensor, measuring sound pressure, and the difference of the sensor signal (B) and the desired value signal (I) is applied as high gain feedback to the actuator. As a consequence, sound not pertaining to the desired value signal (I) can be attenuated in a simple manner, and sound in accordance with the desired value signal (I) can be produced simultaneously with the same apparatus.

L'invention a trait à un procédé et à un appareil destinés à traiter des sons, dans lequel les sons sont atténués par mesure de ceux-ci et production au moyen d'un organe d'actionnement un champ sonore de signe opposé par rapport au champ sonore original. Un signal de valeur (I) voulue est fourni à l'organe d'actionnement reproduisant le signal. Un capteur est connecté à l'organe d'actionnement, qui mesure la pression acoustique; la différence entre le signal de capteur (B) et le signal de valeur (I) voulue est appliquée en tant que rétroaction de gain élevé à l'organe d'actionnement. Par conséquent, les sons ne correspondant pas au signal de valeur (I) voulue peuvent être atténués de manière simple, et les sons correspondant au signal de valeur (I) voulue peuvent être produits simultanément avec le même appareil.

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