Display
Name
|
Variable
Name
|
I/O
and
Type
|
Default
Value
|
Description
|
| Input Signal
|
iy
|
Input
XYRange
|
<active>
|
Specify the input signal.
|
| Response Type
|
type
|
Input
int
|
0
|
Specify the response type of filter.
Option list:
- low:Low Pass
- Allow low frequency components to pass.
- high:High Pass
- Allow high frequency components to pass.
- bandpass:Band Pass
- Allow frequency components within a specified range to pass.
- bandstop:Band Stop
- Allow frequency components outside a specified range to pass.
|
| Method
|
method
|
Input
int
|
0
|
Specify the filter design method.
Option list:
- butter:Butterworth
- Butterworth filter design.
- cheby1:Chebyshev Type I
- Chebyshev Type I filter design.
- cheby2:Chebyshev Type II
- Chebyshev Type II filter design.
- elliptic:Elliptic
- Elliptic filter design.
|
| Filter Order
|
order
|
Input
double
|
10
|
Specify the filter order.
|
| Unit
|
unit
|
Input
int
|
0
|
Specify the unit for the frequency settings.
Option list:
- hz:Hz
- Use Hz as the unit when specifying the frequency specification.
- normalize:Normalize to (0,1)
- The specified frequency is normalized to the region from 0 to 1. It is calculated by Frequency(Hz)/(SampleFrequency(Hz)/2), where SampleFrequency(Hz)/2 is the Nyquist frequency.
|
| Sample Frequency (Fs)
|
sample
|
Input
double
|
<auto>
|
Specify the sampling frequency, available when the Unit is Hz.
|
| Cutoff Frequency (Fc)
|
wn
|
Input
double
|
<auto>
|
When Filter Order is specified (not minimum), this variable is used to specify the cutoff frequency for the low pass and high pass.
|
| Cutoff Frequency 1 (Fc1)
|
wn1
|
Input
double
|
<auto>
|
When Filter Order is specified (not minimum), this variable is used to specify the first cutoff frequency for the band pass and band stop.
|
| Cutoff Frequency 2 (Fc2)
|
wn2
|
Input
double
|
<auto>
|
When Filter Order is specified (not minimum), this variable is used to specify the second cutoff frequency for the band pass and band stop.
|
| Pass Frequency
|
wp
|
Input
double
|
<auto>
|
When Filter Order is minimum, this variable is used to specify the pass frequency for the low pass and high pass.
|
| Stop Frequency
|
ws
|
Input
double
|
<auto>
|
When Filter Order is minimum, this variable is used to specify the stop frequency for the low pass and high pass.
|
| Pass Frequency 1
|
wp1
|
Input
double
|
<auto>
|
When Filter Order is minimum, this variable is used to specify the first pass frequency for the band pass and band stop.
|
| Stop Frequency 1
|
ws1
|
Input
double
|
<auto>
|
When Filter Order is minimum, this variable is used to specify the first stop frequency for the band pass and band stop.
|
| Pass Frequency 2
|
wp2
|
Input
double
|
<auto>
|
When Filter Order is minimum, this variable is used to specify the second pass frequency for the band pass and band stop.
|
| Stop Frequency 2
|
ws2
|
Input
double
|
<auto>
|
When Filter Order is minimum, this variable is used to specify the second stop frequency for the band pass and band stop.
|
| Passband Ripple
|
rp
|
Input
double
|
1
|
Specify the pass band ripples in dB.
|
| Stopband Attenuation
|
rs
|
Input
double
|
80
|
Specify the stop band attenuation in dB.
|
| Forward-Backward Filtering
|
filtfilt
|
Input
int
|
0
|
Specify whether to perform both forward and backward filtering on the input signal.
|
| SOS Matrix
|
sos
|
Output
ReportData
|
[<input>]<new>
|
Output the designed IIR filter as the second order section (SOS) parameters form.
|
| Zeros Poles and Gain
|
zpk
|
Output
ReportData
|
[<input>]<new>
|
Output the designed IIR filter as the zero-pole-gain form.
|
| State-Space Form
|
abcd
|
Output
ReportData
|
[<input>]<new>
|
Output the designed IIR filter as the state-space form.
|
| Coefficients
|
coef
|
Output
ReportData
|
[<input>]<new>
|
Output the designed IIR filter as the numerator coefficients and the denominator coefficients.
|
| Output Signal
|
oy
|
Output
XYRange
|
(<input>,<new>)
|
The output signal after filtering by the designed IIR filter.
|