Planar element for the active compensation of noise in an interior room and Anti-noise module therefor

Abstract

The invention relates to a planar element (24), which can be designed as a curtain for a window (13), as a partition or dividing wall, or as a ceiling part or wall part, for the active compensation ofnoise (14') from different directions (17') in an interior room. The planar element is equipped with anti-noise modules (12), each having a microphone and an electronic circuit having a combination of filters for adjusting phase and amplitude and an electronically controllable amplifier and a loudspeaker for active noise cancellation. As a special characteristic, the planar element (24) is equipped over the width thereof with a plurality of anti-noise modules (12) controllable in an analog manner on each of a plurality of different longitudinally extending lines and is to be placed, for example, in front of a window having bounding walls (13). Said anti-noise modules (12) are at most 50 mm thick, at most 150 mm long, and at most 100 mm wide and have a maximum weight of 200 grams per anti-noise module (12) such that said anti-noise modules can be inconspicuously integrated into the planar element (24) and jointly form longitudinally extending chains of anti-noise modules (12), the anti-noise modules of each chain being arranged in succession over electrical supply lines jointly connecting the anti-noise modules in the form of just two electrical cables extending along the longitudinally extending line. The chain, with the supply lines thereof, is connected in parallel by two electrical supply cables or supply rails, which are under low voltage and which extend transversely to the longitudinally extending lines of the chains. The loudspeakers emit a canceling sound (16') with respect to the noise (15'), which canceling sound first passes through the planar element (24) and subsequently largely cancels the noise.

Description

technical field [0001] The invention relates to a planar element for actively compensating indoor background noise and an anti-noise module thereof, wherein the planar element can be designed as a window curtain, a vertical wall, a partition wall or a ceiling part. To compensate for background noise, anti-noise is produced, which is a targeted artificial sound superimposed on the background noise, phased relative to the background noise in such a way that the background noise is canceled or greatly attenuated move in phase. Ideally, the phase difference between the anti-noise and the background noise is 180 degrees, and its magnitude or amplitude also corresponds to that of the background noise, so that the background noise can theoretically be eliminated 100%. The terms Active Noise Reduction (ANR) or Active Noise Cancellation (ANC) are often used for this purpose. The anti-noise module associated with this planar element is also the subject of the invention. Background t...

AI Technical Summary

Problems solved by technology

They are also very complex, difficult to install (except for Sono devices whose functions are unknown) and relatively difficult to adapt to the respective noise situation

All in all, these solutions are far from being such a noise-resistant solution that not only is far from having zero noise in particular, but also far from being able to do it without deep expertise install and install, and cannot impressive effectively Reduce or virtually eliminate background noise

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