介绍了多尺度逼近理论。选Ｈａａｒ函数作尺度母函数。解释了Ｌ＾２（Ｒ）函数空间多尺度逼近与小波正交分解的概念和建造方法。
Signal wavelet analysis period has come.Wavelet analysis is band on the Multiscale Approximation theory. Multisale approximation theory is comsed of the multisale approximation and wavelet orthognal decomposition in L2 (R) space which is expounded systematically in thispoper. The Hear mother wavelet is cited as on instance for illustration of this theory.
徐铭陶 秦树人. L^2（R）的多尺度逼近与小波正交分解[J].重庆大学学报,1996,19(2):1-9.
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