公开(公告)号：US06385321B1

公开(公告)日：2002-05-07

申请号：US09180899

申请日：1999-09-02

申请人： Jan Krueger ,  Philip Leistner ,  Helmut Fuchs ,  Roland Lippold

发明人： Jan Krueger ,  Philip Leistner ,  Helmut Fuchs ,  Roland Lippold

IPC分类号： A06F1106

CPC分类号： G10K11/178 ,  G10K2210/112 ,  G10K2210/3026 ,  G10K2210/3217 ,  G10K2210/32271

摘要： A reactive sound attenuator which includes a sensor for detecting a sound parameter in a space, e.g. a duct, consists of a signal amplifier that is used to amplify a detected signal, an electroacoustic transducer and a cavity with at least one membrane. The membrane, which is capable of moving in a vibratory manner, is part of a wall of a space, e.g. a duct wall. A sensor, which is disposed in the immediate vicinity of, in or on the membrane, detects the vibrations of the membrane. The sensor's signal, which is amplified and inverted by the amplifier, controls the membrane vibration via the electroacoustic transducer.

摘要翻译： 一种反应式声音衰减器，其包括用于检测空间中的声音参数的传感器，例如， 导管由用于放大检测信号的信号放大器，电声换能器和具有至少一个膜的空腔组成。 能够以振动方式移动的膜是空间的壁的一部分，例如， 管壁。 设置在膜附近或附近的传感器检测膜的振动。 由放大器放大和反相的传感器信号通过电声换能器控制膜振动。