摘要
目的:吞水音信号的处理和特征提取。方法:本论文利用小波阈值算法对吞水音信号进行处理;并且通过带通滤波,利用小波变换的多分辨率分析对信号进行分析。结果:通过信号处理前后对比和分析,小波变换对吞水音信号的处理是有效的;并提出用咽部到贲门后音节的时间代替吞程来作为诊断的一个参数。结论:吞水音的分析在贲门癌的诊断中具有重要价值,利用小波变换,可以有效地对信号进行处理和分析,有助于贲门癌的诊断。
Objective： To dispose phagaquosonogram and extract the features of the signal.Methods： The paper chooses wavelet threshold algorithm to dispose signal,and use multi-resolution analysis of wavelet transform to analysis signal which pass bandpass filter.Results： Through the compare and analysis of signal ,it shows that the wavelet algorithm is effective.Then put forward a proposal that replace old parameter of swallowing course with the time ,which is fi＇om gulllet to syllable after cardiac. Conclusions： Analysis of phagaquosonogram is important to diagnosis cardiac. With the wavelet algorithm ,we can dispose and analyse availably.And the experimental results show that the algorithm has potential application in diagnosising cardiac.
出处
《中国医学物理学杂志》
CSCD
2010年第3期1908-1911,共4页
Chinese Journal of Medical Physics
关键词
小波变换
吞水音
多分辨率分析
wavelet transform
phagaquosonogram
multi-resolution analysis
