نتایج جستجو برای: active noise control

تعداد نتایج: 1876473  

Journal: :journal of advances in computer research 2010
pooya davari

in many active noise control (anc) applications, an online secondary pathmodelling method that uses a white noise as a training signal is required. this paperproposes a new feedback anc system. here we modified both the fxlms and thevss-lms algorithms to raised noise attenuation and modelling accuracy for theoverall system. the proposed algorithm stops injection of the white noise at theoptimum...

Journal: :international journal of automotive engineering 0
younesian hamzavi rostam

in recent years, need to increase the convenience of trips in railway vehicles causes that train operators and manufacturers focus on reducing the noise level which is sensed by passengers. in this paper, first the state of modeling acoustic noise in cab train is discussed and natural frequencies and acoustic mode shapes are derived and then formulation of acoustic pressure in the cab will be o...

Journal: :Journal of the Japan Society for Precision Engineering 1998

Journal: :Advances in Acoustics and Vibration 2008

Journal: :JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 1997

Journal: :Journal of the Japan Society for Precision Engineering 1998

In many active noise control (ANC) applications, an online secondary path modelling method that uses a white noise as a training signal is required. This paper proposes a new feedback ANC system. Here we modified both the FxLMS and the VSS-LMS algorithms to raised noise attenuation and modelling accuracy for the overall system. The proposed algorithm stops injection of the white noise at the op...

In many active noise control (ANC) applications, an online secondary path modelling method that uses a white noise as a training signal is required. This paper proposes a new feedback ANC system. Here we modified both the FxLMS and the VSS-LMS algorithms to raised noise attenuation and modelling accuracy for the overall system. The proposed algorithm stops injection of the white noise at the op...

Hamzavi, Rostam, Younesian,

In recent years, need to increase the convenience of trips in railway vehicles causes that train operators and manufacturers focus on reducing the noise level which is sensed by passengers. In this paper, first the state of modeling acoustic noise in cab train is discussed and natural frequencies and acoustic mode shapes are derived and then formulation of acoustic pressure in the cab will be o...

Journal: :jundishapur journal of health sciences 0
gholam abbas shirali department of occupational health engineering, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran gholam abbas shirali department of occupational health engineering, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran mohammad javad zareh sakhvidi department of occupational health engineering, school of health, shahid sadoughi yazd ,university of medical sciences, hamedan, ir iran mohammad javad zareh sakhvidi department of occupational health engineering, school of health, shahid sadoughi yazd ,university of medical sciences, hamedan, ir iran

this paper tries to determine efficiency of noise control method using fuzzy logic and based on collected data. from among various methods of noise control in workplace, sex methods (enclosure, installing noise absorber, enclosure and absorber, active, and administrative control, and personal protective equipment) were typically selected based on experts' judgment. for each of selected control ...

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