fir_interp (MathScript RT Module Function)
LabVIEW 2012 MathScript RT Module Help
Edition Date: June 2012
Part Number: 373123C-01
»View Product Info
Edition Date: June 2012
Part Number: 373123C-01
»View Product Info
 | Download Help (Windows Only) |
Owning Class: filter design
Requires: MathScript RT Module
Syntax
b = fir_interp(r, l, alpha)
b = fir_interp(r, n, 'Lagrange')
[b, a] = fir_interp(r, l, alpha)
[b, a] = fir_interp(r, n, 'Lagrange')
Legacy Name: intfilt
Description
Designs an interpolation FIR filter.
Inputs
| Name | Description |
|---|---|
| r | Specifies the number of zeros to insert between each sample. |
| l | Specifies the number of samples used to interpolate. |
| alpha | LabVIEW multiplies alpha by the Nyquist frequency. alpha is a real number between 0 and 1. |
| n | Specifies the order of the Lagrange polynomial. |
| 'Lagrange' | Directs LabVIEW to design an FIR filter that performs Lagrange polynomial interpolation. |
Outputs
| Name | Description |
|---|---|
| b | Returns the numerator coefficients of the filter. b is a vector. |
| a | Returns the denominator coefficients of the filter. a is a vector. |
Details
The following table lists the support characteristics of this function.
| Supported in the LabVIEW Run-Time Engine | Yes |
| Supported on RT targets | Yes |
| Suitable for bounded execution times on RT | Not characterized |
Examples
r = 3;
n = 2;
[b, a] = fir_interp(r, n, 'Lagrange')
r = 3;
l = 2;
alpha = 1;
b = fir_interp(r, l, alpha)
Related Topics
Helpful
Not Helpful