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The Analysis of the Environment Sound
Author(s): 
Pages: 161-164
Year: Issue:  3
Journal: CHINESE JOURNAL OF MEDICAL PHYSICS

Keyword:  环境声音信号FFT小波变换三维声图;
Abstract: 利用FFT分析方法,对环境中存在的267种9大类声音信号进行了分析并对其频谱分析参数进行了统计处理,了解其基频与最大谐波频率分布的特点.对基频频率较低的信号进行小波变换处理后,其三维图均发生了明显的变化,低频段变化被明显放大,可以更加清楚地表现信号低频部分的变化,有利于较低频段信息的更精确提取.
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