International Journal of Engineering Research

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Active Noise Control in Air-Conditioning Ducts


Affiliations
1 Electronics and Communications Department, El-Azhar University, Egypt
2 National Center for Housing& Building Research, India
 

A proposed model is set up for a Noise-cancelling of air conditioning by means of active noise control. Essentially, this involves using a microphone, placed near the fan, and an electronic circuitry which generates an "anti-noise" sound wave with the opposite polarity of the sound wave of the microphone. This results in destructive interference, which cancels out the noise within the enclosed volume of the fan. The best sat is factory result was obtained at 2000 Hz equal 11 dB.

Keywords

Active Noise, Noise Cancelling, Electronic System, Sound Pressure Level.
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  • Active Noise Control in Air-Conditioning Ducts

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Authors

AL-Sair Ragab Mohamed
Electronics and Communications Department, El-Azhar University, Egypt
Hoda Soliman Siddiq
National Center for Housing& Building Research, India
Mohamed Mahmoud Kamel Mahmoud
National Center for Housing& Building Research, India

Abstract


A proposed model is set up for a Noise-cancelling of air conditioning by means of active noise control. Essentially, this involves using a microphone, placed near the fan, and an electronic circuitry which generates an "anti-noise" sound wave with the opposite polarity of the sound wave of the microphone. This results in destructive interference, which cancels out the noise within the enclosed volume of the fan. The best sat is factory result was obtained at 2000 Hz equal 11 dB.

Keywords


Active Noise, Noise Cancelling, Electronic System, Sound Pressure Level.