• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2006.05a
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• pp.1209-1211
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• 2006

This paper introduces an experimental study for the noise reduction of a ventilating fan system. For the purpose of noise reduction, conventionally an absorptive duct silencer filled with a glass fiber has been utilized. However, a glass fiber has some disadvantages like hygiene and secondary pollution problems. In order to overcome these problems, in this paper, a perforated duct silencer has been applied to the ventilating fan system. For the designing of a perforated duct silencer, the transmission losses for various perforated panel systems are measured and compared with its noise reduction performance.

• The Science & Technology
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• v.34 no.1 s.380
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• pp.22-23
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• 2001

대전 KAIST 소음 및 진동제어 연구센터의 이정권 교수는 제반 음향이론 및 실험기법과 이에 대한 실제적용을 연구하는 중견과학자이다. 이교수는 음향학 중에서도 덕트 내의 음향전파, 차량의 소음 및 진동제어, 구조음향 및 이에 수반된 음장소음 및 진동제어를 집중적으로 연구하고 있어 주목을 받고 있다.

• 월간 기계설비
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• s.23
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• pp.204-205
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• 1992

• Journal of KSNVE
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• v.9 no.2
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• pp.265-272
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• 1999

A LMS algorithms has been widely used for an adaptive filter algorithm in active noise control systems. But this algorithm has poor convergence and it is very difficult to select optimal convergence parameters in this algorithm. In this paper, a fuzzy LMS algorithm where the convergence parameters are computed using a fuzzy logic controller was proposed. A proposed algorithm was applied to active noise control system in HVAC(central Heating Ventilation and Air Conditioning) ducts. The experimental ducts and experimental apparatus were designed and manufactured for experiments, and the modelling of the experimental ducts was also performed for computer simulations. Computer simulations and experiments were performed to show the effectiveness of a proposed algorithm.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2009.10a
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• pp.336-337
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• 2009

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2013.04a
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• pp.379-380
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• 2013

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2013.04a
• /
• pp.803-804
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• 2013

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.21 no.1
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• pp.35-39
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• 1992

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2009.10a
• /
• pp.605-606
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• 2009

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2014.04a
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• pp.579-580
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• 2014