2.11.10 dfilterapply

1 Brief Information
2 Additional Information
3 Command Line Usage
4 X-Function Execution Options
5 Variables
6 Examples
7 Related X-Functions

Brief Information

Apply IIR filter using specified coefficients

Additional Information

Minimum Origin Version Required: Origin 9.0 SR0. This feature is for OriginPro only.

Command Line Usage

dfilterapply -r 2 iy:=1!(1,2) struct:=0 data:=2!

X-Function Execution Options

Please refer to the page for additional option switches when accessing the x-function from script

Variables

Display Name	Variable Name	I/O and Type	Default Value	Description
Input	iy	Input XYRange	<active>	Specify the input signal.
Filter Structture	struct	Input int	0	Specify the structure form of IIR filter. Option list: 0=sos: SOS Matrix Specify the structure form to the second order section(SOS) parameter form. 1=coef:Coefficient Specify the structure form to the numerator coefficients and the denominator coefficients.
Filter Model Data	data	Input Range	<unassigned>	Specify the filter model data
Forward-Backward Filtering	filtfilt	Input int	0	Specify whether to perform both forward and backward filtering on the input signal.
Output	oy	Output XYRange	(<input>,<new>)	The output signal after filtering by the IIR filter.

Examples

This example will show how to import emg recording.dat into Origin, then how to use dfilter X-Function to create an IIR filter, and at last how to apply IIR filter using specified coefficients

newbook;
impasc fname:=system.path.program$+"samples\signal processing\emg recording.dat";
dfilter -r 0 iy:=2 sos:=[<input>]<new>;
dfilterapply iy:=1!(1,2) struct:=0 data:=2! oy:=<new>!(<new>,<new>);