小波变换的wfilters的wname

waveinfo

Wavelets information

获取小波基信息

Syntax
waveinfo
waveinfo(wname)
waveinfo(‘wsys’)

描述

waveinfo 可获取工具包里所有的小波基信息.

waveinfo(wname) 可获取从属于小波基族wname的信息

waveinfo('wsys') 可获取小波基‘wsys’的信息

例子

waveinfo('db')

Information on Daubechies wavelets.

Daubechies Wavelets

General characteristics: Compactly supported
wavelets with extremal phase and highest
number of vanishing moments for a given
support width. Associated scaling filters are
minimum-phase filters.

Family Daubechies
Short name db
Order N N a positive integer from 1 to 45.
Examples db1 or haar, db4, db15

Orthogonal yes
Biorthogonal yes
Compact support yes
DWT possible
CWT possible

Support width 2N-1
Filters length 2N
Regularity about 0.2 N for large N
Symmetry far from
Number of vanishing
moments for psi N

Reference: I. Daubechies,
Ten lectures on wavelets,
CBMS, SIAM, 61, 1994, 194-202.

转载

https://ww2.mathworks.cn/help/wavelet/ref/waveinfo.html