Wideband noise suppressing system for communication machine room

A communication room, noise suppression technology, applied in the direction of reducing electrical interference, etc., can solve the problems of increased space use waste, poor noise reduction effect, etc.

Inactive Publication Date: 2009-08-05
ASIA VITAL COMPONENTS SHENZHEN CO LTD
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  • Abstract
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Problems solved by technology

[0005] 1. The sound-absorbing ability of structures and materials or the ability of sound to penetrate the structure usually has a considerable relationship with the noise frequency. Generally speaking, for high-frequency noise, such as: 1k ~ 20kHZ, the sound-absorbing performance is good, and for low-frequency noise, such as: Below 1kHZ, the noise reduction effect is not good
[0006] 2. Use sound-absorbing cotton, sound-proof panels, etc. to isolate noise in the communication room, which only increases the waste of space and has no real benefit

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  • Wideband noise suppressing system for communication machine room
  • Wideband noise suppressing system for communication machine room
  • Wideband noise suppressing system for communication machine room

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Embodiment Construction

[0014] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0015] The present invention is a broadband noise suppression system for a communication room, please refer to figure 1 , figure 2 It is a preferred embodiment of the present invention. As shown in the figure, this system is an independent single (Standalone) system, and its application method is multi-channel active noise control to deal with the low-frequency noise of the fan and effectively reduce the noise , and do not need to use a personal computer for auxiliary use to save costs; the system at least includes a digital signal microprocessor 1 (Digital Signal Processor, referred to as DSP), a sensing unit 2 (Sensor) and a loudspeaker (Loudspeaker) 4, wherein the sensing unit 2 is respectively provided with four error microphones 20 and two reference microphones 21, the reference microphones 21 are u...

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Abstract

The invention relates to a broadband noise inhibiting system of communication rooms, in particular to a broadband noise inhibiting system that adopts the following technical proposal: a sensing unit detects a noise source that is generated by the running of a fan, obtains a noise signal and sends the signal to a signal amplifying unit, the signal amplifying unit realizes the signal amplification of the noise signal and sends the noise signal to a signal converting unit, thus converting the noise signal to a digital signal; a complex multi-channel controller realizes calibration and quick convergence operation according to the received digital signal, generates a reversed digital signal, and sends the reversed digital signal to the signal converting unit, thus converting the reversed digital signal to a reversed analog signal, and the signal amplifying unit realizes the power amplification of the received reversed analog signal and generates a control signal so as to drive a loudspeaker to emit interference sound wave, thus counteracting the noise source and achieving the goal for eliminating the broadband noise.

Description

technical field [0001] The present invention relates to a broadband noise suppression system, in particular to a noise source detected by an induction unit and converted into a noise signal, which is transmitted to a digital signal microprocessor for signal amplification and signal processing. After conversion, the signal is corrected and quickly converged by a multi-channel composite controller of the digital signal microprocessor, and the signal is converted and amplified in sequence to generate a control signal to drive a speaker to emit interference sound waves to Offset the noise source to achieve the purpose of broadband noise cancellation. Background technique [0002] Nowadays, the technology of communication technology is changing with each passing day. In order to optimize the communication quality and service, practitioners have added communication computer rooms in major metropolitan areas to improve the situation of busy signal, poor reception, and unstable sign...

Claims

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Application Information

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IPC IPC(8): H04B15/02
Inventor 苏富诚廖元良廖翊宏李志仁
Owner ASIA VITAL COMPONENTS SHENZHEN CO LTD
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