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Device for Noise Suppression
Категория: Инж. тех. м. и а. |
Новость от: Admin |
27-12-2005
1. One of the shortages of the device for noise suppression by active compensation is its inerrable operation in time (that is, their tendency to generation). According to c.a. N590807 the developed device eliminates this shortage by introduction of microphone into the system – loudspeaker of the feedback circuit which includes delay line, phase- shifting network.
Besides, bandwidth of the suppression frequencies depends on the number of receiving blocks with different selective filters.
2. Equalizing acoustic field is formed in device by loudspeakers for noise suppression. By certificate of authorship N836655 suppressive field is excited by equalizing chamber together with the chamber of the noise source being connected by waveguides. The given structure allows us to perform active compensation of the noise through the whole acoustic field.
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