2.11.2.3 dwt(Pro)

Menu Information

Analysis: Signal Processing: Wavelet: Decompose

Perform 1D wavelet decomposition

This feature is for OriginPro only.

1. dwt ix:=Col(1);

2. dwt ix:=Col(1) type:=db2;

3. dwt ix:=Col(1) ext:=z;

4. dwt ix:=Col(1) ca:=Col(3) cd:=Col(4);

Display Name	Variable Name	I/O and Type	Default Value	Description
Input	ix	Input vector	<active>	Specify the input signal
Wavelet Type & Order	type	Input int	H	Specify the wavelet type Option list haar:Haar Haar wavelet db 2:DB2 Daubechies wavelet (N=2) db 3:DB3 Daubechies wavelet (N=3) db 4:DB4 Daubechies wavelet (N=4) db 5:DB5 Daubechies wavelet (N=5) db 6:DB6 Daubechies wavelet (N=6) db 7:DB7 Daubechies wavelet (N=7) db 8:DB8 Daubechies wavelet (N=8) db 9:DB9 Daubechies wavelet (N=9) db 10:DB10 Daubechies wavelet (N=10) b11:Bior1.1 Biorthogonal (Nr=1, Nd=1) b13:Bior1.3 Biorthogonal (Nr=1, Nd=3) b15:Bior1.5 Biorthogonal (Nr=1, Nd=5) b22:Bior2.2 Biorthogonal (Nr=2, Nd=2) b24:Bior2.4 Biorthogonal (Nr=2, Nd=4) b26:Bior2.6 Biorthogonal (Nr=2, Nd=6) b28:Bior2.8 Biorthogonal (Nr=2, Nd=8) b31:Bior3.1 Biorthogonal (Nr=3, Nd=1) b33:Bior3.3 Biorthogonal (Nr=3, Nd=3) b35:Bior3.5 Biorthogonal (Nr=3, Nd=5) b37:Bior3.7 Biorthogonal (Nr=3, Nd=7)
Extension Mode	ext	Input int	P	Specify the end extension mode Option list periodic:Periodic The input signal will be viewed as periodic. z:Zero -padded The data points outside the input range will be viewed as zeroes.
Approx Coefficient	ca	Output vector	<new>	Specify the vector for approximation coefficients
Detail Coefficient	cd	Output vector	<new>	Specify the vector for detail coefficients

1. To decompose the signal in Column 1 of the active sheet using Haar wavelet and periodic as the extension mode, use the script command:

dwt ix:=col(1)

2. To perform dwt using a pre-saved analysis theme called MyTheme, use the script command:

dwt -t "MyTheme"

For more information, please refer to our User Guide.

Keywords:discrete , decompose