matlab中小波变换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