Open AccessThunder acoustic spectrum obtained by using digital signal processing and propagation effects
Author(s) -
Yen-Chieh Ouyang,
Yuan Pan,
Jia Xiang-Dong,
Xiaoyun Wang,
Simin Xue
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.084303
Subject(s) - thunder , acoustics , attenuation , signal (programming language) , frequency spectrum , lightning (connector) , physics , telecommunications , spectral density , computer science , optics , meteorology , power (physics) , quantum mechanics , programming language
There are a few references on thunder at present, moreover they are all about thunder frequency spectrum at observation location. However, thunder frequency spectrum in observation location is a distorted signal because of noises and sound attenuation effects. In this paper, thunder signal from lightning discharge channels is obtained in Lanzhou of China. By using digital filter and Fourier transform, thunder frequency spectrum at the observation location is gained. Then, thunder frequency spectrum near lightning discharge channel is computed with the theory of sound propagation effects.