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spatial decomposition method for UV Image of Corona on a Large Generator Stator Winding

IEEE ELECTRICAL INSULATION MAGAZINE 2022年第2期38卷 6-13页

作者： Zhao, Xia Sun, Yongxin Zhang, Hui Du, Xia Deng, Chi Chen, Qingguo Harbin Univ Sci & Technol Sch Mat Sci & Chem Engn Key Lab Engn Dielect & Its Applicat Minist Educ Harbin 150080 Peoples R China Heilongjiang Univ Sci & Technol Harbin 150027 Peoples R China Harbin Inst Large Elect Machinery State Key Lab Hydropower Equipment Harbin 150040 Peoples R China

This article proposes the regularity of the possible corona sites in space on the large generator stator winding and the spatial decomposition method for the UV image of surface partial discharge and corona.

关键词： stator winding corona partial discharge UV imaging spatial decomposition method

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PERCEPTUAL EVALUATION OF BINAURAL AURALIZATION OF DATA OBTAINED FROM THE spatial decomposition method

PERCEPTUAL EVALUATION OF BINAURAL AURALIZATION OF DATA OBTAI...

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IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA)

作者： Ahrens, Jens Chalmers Univ Technol Audio Technol Grp Div Appl Acoust S-41296 Gothenburg Sweden

ISBN: (纸本)9781728111230

We present a perceptual evaluation of head-tracked binaural renderings of room impulse response data that were obtained from the spatial decomposition method. These data comprise an omnidirectional impulse response as well as instantaneous propagation directions of the sound field. The subjects in our experiment compared auralizations of these data according to the originally proposed method against direct auralizations of dummy head measurements of the exact same scenarios. We tested various parameters such as size of the microphone array, number of microphones, and HRTF grid-resolution. Our study shows that most parameter sets lead to a perception that is very similar to the dummy head data particlarly with respect to spaciousness. The remaining differences that are audible are considered small and relate primarily to timbre. This suggests that the equalization procedure that is part of the approach provides potential for improvement. Our results also show that the elevation of the propagation directions may be quantized coarsely without audible impairment.

关键词： Reverberation spatial decomposition method binaural rendering head-related transfer functions

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AURALIZATION OF OMNIDIRECTIONAL ROOM IMPULSE RESPONSES BASED ON THE spatial decomposition method AND SYNTHETIC spatial DATA 44

AURALIZATION OF OMNIDIRECTIONAL ROOM IMPULSE RESPONSES BASED...

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44th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

作者： Ahrens, Jens Chalmers Univ Technol Div Appl Acoust Audio Technol Grp S-41296 Gothenburg Sweden

ISBN: (纸本)9781479981311

The spatial decomposition method decomposes acoustic room impulse responses into a pressure signal and a direction of arrival for each time instant of the pressure signal. An acoustic space can be auralized by distributing the pressure signal over the available loudspeakers or head-related transfer functions so that the required instantaneous propagation direction is recreated. We present a user study that demonstrates based on binaural auralization that the arrival directions can be synthesized from random data such that the auralization is nearly indistinguishable from the auralization of the original data. The presented concept constitutes the fundament of a highly scalable spatialization method for omnidirectional room impulse responses.

关键词： Reverberation spatial decomposition method binaural rendering head-related transfer functions

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