并行移相干涉的时空滤波降噪

2020 6th International Conference on Engineering, Applied Sciences and Technology (ICEAST) Pub Date : 2020-07-01 DOI:10.1109/ICEAST50382.2020.9165356

N. Chitanont, Pannarong Thongtangsai, Dabasvee Tachatanachai, Praewa Chatsuksiridech, Fumihiko Imaeda, Risako Tanigawa, K. Yatabe, Yasuhiro Oikawa

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引用次数: 1

摘要

声场可视化对于充分理解声行为和声现象具有重要意义。近年来，人们提出了一种利用平行移相干涉仪(PPSI)实现声场可视化的方法。PPSI可以在不放置任何物体的情况下对声场进行定量、瞬时的观测。然而，该系统在输出条纹图像中引入了一些不必要的噪声。为了降低PPSI系统中的噪声，信号处理方法不断得到发展。本文在PPSI系统建立后，对不同类型的时空滤波器进行了测试，以提高系统的降噪效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Noise reduction by spatio-temporal filtering on parallel phase-shifting interferometry

Visualizing sound field is important to fully understand the acoustic behavior and phenomena. Recently, sound field visualization by using parallel phase-shifting interferometer (PPSI) has been proposed. PPSI can observe sound field quantitively and instantaneously without placing any object inside the field. However, the system has introduced some unwanted noise to the output fringe image. There is continuous development in signal processing method to reduce the noise in PPSI system. In this paper, different type of spatio-temporal filter has been tested to improve noise reduction in PPSI system upon establishing.

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2020 6th International Conference on Engineering, Applied Sciences and Technology (ICEAST)

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