An active noise reduction method and device for industrial noise control
An industrial noise and noise reduction technology, applied in the direction of sound-generating equipment, speech analysis, instruments, etc., can solve the problems of weakening driving force, high price, losing the public market, etc., to avoid the influence of phase difference offset, simplify product composition, and simplify machinery structure effect
Active Publication Date: 2018-08-17
云南飞侬科技有限公司
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Problems solved by technology
The high-end and special-purpose orientation and the traditional manufacturing thinking mode make the composition of the active noise reduction device very complicated and the price is very expensive
As a result, it almost lost its market competitiveness and lost the public market
And then seriously weaken the driving force of the public to develop such products
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[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0055] Figure 4-5 The shown active noise reduction device for industrial noise control includes a tubular sound insulation body 1, a secondary sound source shield 5 installed in the sound insulation body 1 along the axis of the sound insulation body 1 through a bracket 2, two The secondary loudspeaker 4 installed in the secondary sound source protective cover 5 oppositely through the fixing seat 7 is equipped with a controller 10 for individual modulation of ...
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The invention discloses a method and a device for active noise reduction for industrial noise treatment, aiming at providing the method and the device for the industrial noise treatment which is high in noise processing effect and low in the cost. The method for active noise reduction for industrial noise treatment comprises steps of (1) practical measurement and sampling modeling, (2) industrial personalized modulation, (3) field application simplification, and (4) informatization remote service. The device for active noise reduction for industrial noise treatment comprises a tubular sound insulation body, a secondary sound source protective housing installed inside the sound insulation main body along the axis of the sound insulation main body through a support, two secondary loudspeakers which are installed in the secondary sound source protective housing back to back through a fixed seat, a controller equipped with a personalized modulating subsonic sound code mode and mode switching programming as required in a claim of right, and two flow-guiding sound transmission protective housings which are installed on two ends of the secondary sound source protective housing; and the controller is arranged on the outside of the sound insulation main body and is electrically connected to the secondary loudspeaker.
Description
technical field [0001] The invention relates to the technical field of noise control, in particular to an active noise reduction method and device for industrial noise control. Background technique [0002] Compared with passive noise reduction (that is, passive noise reduction), active noise reduction (that is, active noise reduction) is the most promising technology for noise control. The technology is based on the basic physical principle of anti-phase acoustic interference and destructive interference. The starting point of its application can be traced back to 1933 when the German physicist Pau Lueg obtained the first patent. After more than 80 years, many people have made great efforts to this end, and now there are hundreds of monographs, papers, and nearly 100 patents granted by various countries in the world. However, the application of this technology, especially in the civilian field, is rare. It is believed that there are three main reasons: [0003] 1. Drive...
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IPC IPC(8): G10L21/0208G10K11/175
Inventor 邝勇兴胡寅王勇刘杰黄继友
Owner 云南飞侬科技有限公司