초록 ▼

The invention relates to an arrangement for generating sound waves or anti-sound waves. For the sound waves. For the sound wave transducer, use can be made of window glass (1) or other types of transparent material, which is set into vibration by means of one or a plurality of actuators (6), such as

The invention relates to an arrangement for generating sound waves or anti-sound waves. For the sound waves. For the sound wave transducer, use can be made of window glass (1) or other types of transparent material, which is set into vibration by means of one or a plurality of actuators (6), such as piezo elements or actuators based on electrostatic attraction and repulsion.

대표청구항 ▼

[ I claim:] [1.] A noise dampening system for dampening acoustic vibrations entering a building via a window, comprising:a first substantially flat windowpane;a second substantially flat windowpane parallel to the first windowpane, said first windowpane having a vibrational rigidity higher than the

[ I claim:] [1.] A noise dampening system for dampening acoustic vibrations entering a building via a window, comprising:a first substantially flat windowpane;a second substantially flat windowpane parallel to the first windowpane, said first windowpane having a vibrational rigidity higher than the second windowpane;an actuator configured to generate acoustic vibrations in at least one of the first and second windowpanes;a sensor attached to the second windowpane and configured to sense motion of the second windowpane; anda control unit coupled to the sensor and the actuator, said control unit being configured to control the actuator to minimize the motion of the second windowpane using signals received from the sensor, said signals corresponding to the motion of the second windowpane sensed by the sensor.