摘要
基于理想滤波器组,实现了信号序列的更佳频率分辨率分解——小波包分解,分析了分解序列的频域变化,建立了基于二分结构的运算路径与分解序列频带及其形状的关系.
The method of wavelet packet algorithm is exploited to decompose the signal into finer frequency channels on the basis of multirate filter banks. The change of the series of decomposed signal in frequency field is analysed. The relation between the implementation route based on a dyadictree structure and the position and form of decomposed series spectrum is shown.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
1997年第12期130-135,141,共7页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金