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Article ID: 1003-6326(2005)02-0395-05 Noise reduction of punch press mechanical clutch engagement CHEN Wei(陈 威)1, 2, 3, SUN Chang-qing(孙长青)1, LI Yun-liang(李运良)1 (1. Department... added to the spline bush keyways and the clutch running noise reduction has reached 10.7dB(A). Considering such factors as the running characteristics of the punch press clutch, the demand......
are illustrated. Moreover, the cause of the stochastic noise in the stray current sensor is analyzed. The calculation method of the stochastic noise coefficient is presented in detail. And the feasibility... of stochastic noise is proposed based on the Allan variance analysis method. The cause of the typical stochastic noise is analyzed. The calculation method of the stochastic noise coefficient......
J. Cent. South Univ. (2018) 25: 2040-2048 DOI: https://doi.org/10.1007/s11771-018-3893-6 Study of road tunnel threshold zone lighting reduction coefficient DU Feng(杜峰)1, 2, WENG Ji(翁季)1, HU Ying... in threshold zones mostly adopt the reduction coefficient method. However, the determination of reduction coefficient k simply considers tunnel design speed and flow rate, while excluding outside tunnel......
Heidelberg 2016 Abstract: Combustion noise takes large proportion in diesel engine noise and the studies of its influence factors play an important role in noise reduction. Engine noise and cylinder... at low and medium rotating speeds [5–6]. Therefore, the studies of influence factors and optimization of combustion noise play an important role in noise reduction for diesel engines. Combustion noise......
J. Cent. South Univ. (2019) 26: 2878-2890 DOI: https://doi.org/10.1007/s11771-019-4221-5 An improved joint method for onset picking of acoustic emission signals with noise ZHOU Zi-long(周子龙)1, CHENG... of this signal. This improved joint method is tested and validated by the acoustic signals with different signal to noise ratios (SNRs) and waveforms. The results show that the improved joint method......
algorithm with the conventional algorithm. As a result, average PESQ by the proposed algorithm was higher than the average PESQ by the conventional noise reduction algorithm and segSNR was higher as much as 3.2 dB in average than that of the noise reduction algorithm. Key words: speech enhancement; noise reduction; psychoacoustic property; human hearing property 1 Introduction One......
vector nonlinearities [J]. Signal Processing, 2011, 91(8): 2091-2100. [41] BENDOUMIA R, DJENDI M. Two-channel variable-step-size forward-and-backward adaptive algorithms for acoustic noise reduction...J. Cent. South Univ. (2017) 24: 900-911 DOI: 10.1007/s11771-017-3492-y Noise cancellation of a multi-reference full-wave magnetic resonance sounding signal based on a modified sigmoid variable step......
J. Cent. South Univ. (2012) 19: 2541-2547 DOI: 10.1007/s11771-012-1308-7 Novel Retinex algorithm by interpolation and adaptive noise suppression LI Wu-jing(李武劲)1, GU Bo(古博)1, HUANG Jiang-tao(黄... by an interpolation technique. When attempting to recover the reflectance image, an adaptive method which can be considered as an optimization problem was employed to suppress noise in dark environments and keep......
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J. Cent. South Univ. (2018) 25: 2733-2753 DOI: https://doi.org/10.1007/s11771-018-3950-1 Noise comparison of centrifugal pump operating in pump and turbine mode DONG Liang(董亮)1, DAI Cui(代翠)2, 3... and Springer-Verlag GmbH Germany, part of Springer Nature 2018 Abstract: Investigations regarding the relation of noise performance for centrifugal pump operating in pump and turbine modes continue......