Indoor noise elimination device

A noise cancellation and noise cancellation technology, applied in the field of indoor noise cancellation devices, can solve the problems of passive noise and poor noise cancellation effect, and achieve the effect of reducing noise pollution and improving noise cancellation effect
CN104064176AInactive Publication Date: 2014-09-24曾斌
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
曾斌
Publication Date
2014-09-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an indoor noise elimination device. The indoor noise elimination device comprises a noise collector, a backward wave frequency transmitter and a controller. The noise collector is used for measuring the waveform and frequency of external noise in a preset direction and transmitting external noise collection signals. The backward wave frequency transmitter is used for attenuating or offsetting noise energy and can emit backward sound waves with the same frequency as the external noise in the direction opposite to the direction of the external noise, or can form a wave attenuating energy field region on a noise transmission channel, wherein the wave attenuating energy field region can prevent the external noise from entering a room. The controller is used for receiving the external noise collection signals and controlling the working status of the backward wave frequency transmitter according to the external noise waveform and frequency corresponding to the external noise collection signals. According to the indoor noise elimination device, the noise collector is used for measuring the external noise, and the controller is used for controlling the backward wave frequency transmitter to eliminate the noise, so that active elimination of the noise is achieved, the effect of noise elimination is improved, and the noise pollution is reduced.
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Description

technical field

[0001] The invention relates to the technical field of reducing environmental noise in the field of environmental protection, and more specifically relates to an indoor noise elimination device. Background technique

[0002] In the era of rapid development of science and technology, the process of industrialization of cities and towns is accelerating. Whether it is an ordinary residential area, or a public place such as a school or a hospital, the problem of noise is becoming more and more serious. Noise reduction is an important part of environmental protection work. The usual measure is to use sound insulation and noise reduction in closed physical spaces. The house is the main place for people to live. It is mainly closed by walls, doors and windows. The sound insulation function of the walls is much better than that of the doors and windows. Therefore, the sound insulation of doors and windows is the weak link of noise prevention, and its effect directly...

Claims

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