Environmental audio noise reduction device

Abstract

An environmental audio noise reduction device mainly applied to road surroundings, residential areas and indoor noise reduction or noise prevention adopts a partition splicing neutralization or isolation mode noise reduction means. The noise reduction device mainly comprises an ECU circuit board, a microphone, a loudspeaker sound box, a housing and a support. The noise reduction device mainly comprises a snow sensor, a centralized manager, or a plurality of noise reduction devices. In a partition splicing neutralization noise reduction mode, a loudspeaker is turned off instantly, and a sound background is sampled at a proper time, and a plurality of horn sub-sectors are spliced to output reversed-phase sound wave for superposition and suppressing noise. In the isolation noise reduction mode, a directional loudspeaker output sound waves in an isolated mode to interfere the original noise propagation direction, so as to change the original noise propagation direction. The same technologyextends to mobile equipment such as a mobile phone, " secret talk " protection, " silent " disturbance-free, " sleep "-assisting and outputting white noise functions can be realized by designing APPapplication software or improving the underlying operation system.

Description

Technical field [0001] The present invention relates to an environmental audio noise reduction device, especially refers to the arrangement of array partitions to track the specific diffusion direction of the noise source and synchronously neutralize it with anti-phase sound wave superposition, or use the method of superimposing sound waves in a specific propagation direction to change the original noise propagation and diffusion direction. Or reduce the noise impact in protected areas. In short, reduce audio sound pressure, or control the direction or range of audio diffusion. Application scenarios mainly include: road edge noise reduction, residential area anti-noise, indoor noise anti-noise, secret conversation protection. Background technique [0002] Noise pollution is serious around railway stations, shipping terminals, airports, railways, urban expressways, elevated expressways, working workshops, etc., which have a great impact on people's work, life, and health. Th...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the applicability, effect, accuracy, and engineering application defects of existing environmental audio noise reduction devices, the present invention provides a relatively reasonable and complete environmental audio noise reduction technical solution. It can be assembled with the sound speaker nearby, not only suitable for the point noise source environment but also suitable for the noise environment of random moving and changing band like highway or working condition workshop noise environment

Images