rcos (MathScript RT Module Function)
LabVIEW 2011 MathScript RT Module Help
Edition Date: June 2011
Part Number: 373123B-01
»View Product Info
Edition Date: June 2011
Part Number: 373123B-01
»View Product Info
Owning Class: filter design
Requires: MathScript RT Module
Syntax
b = rcos(Fd, Fs)
[b, a] = rcos(Fd, Fs, type)
[b, a] = rcos(Fd, Fs, type, r)
[b, a] = rcos(Fd, Fs, type, r, d)
[b, a] = rcos(Fd, Fs, type, r, d, t)
Legacy Name: rcosine
Description
Designs a raised cosine filter.
Inputs
| Name | Description | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Fd | Specifies the sampling frequency of the input signal. | ||||||||||
| Fs | Specifies the sampling frequency of the filter. | ||||||||||
| type | Specifies the designed filter's type. type is a string that accepts the following values or their combinations:
|
||||||||||
| r | Specifies the rolloff factor, which is in the range [0, 1]. The default is 0.5. | ||||||||||
| d | Specifies the designed filter's group delay. The default is 3. | ||||||||||
| t | Specifies the threshold when truncating an FIR filter into the IIR filter. The default is 0.01. |
Outputs
| Name | Description |
|---|---|
| b | Returns the numerator of the raised cosine filter under design. |
| a | Returns the denominator of the raised cosine filter under design. |
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
[B, A] = rcos(4, 20, 'iir/sqrt', 0.15, 4, 0.12);