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decimate (MathScript RT Module Function)

LabVIEW 2012 MathScript RT Module Help

Edition Date: June 2012

Part Number: 373123C-01

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Owning Class: resampling

Requires: MathScript RT Module

Syntax

c = decimate(a, b)

c = decimate(a, b, n)

c = decimate(a, b, option)

c = decimate(a, b, n, option)

Description

Uses a type 1 Chebyshev filter to resample a signal.

Examples

Inputs

Name Description
a Specifies the original signal. a is a real vector.
b Specifies the new sampling rate. b is a positive integer.
n Specifies the order of the type 1 Chebyshev filter to use. n is a positive integer.
option Specifies the type of filter to use. option is a string that accepts the following values.

'FIR' Directs LabVIEW to use an FIR filter to perform the resampling.
'IIR' Directs LabVIEW to use an IIR filter to perform the resampling.

Outputs

Name Description
c Returns a resampled version of a at 1/b times the original rate. The length of c is 1/b times the length of a. c is a real 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

A = [1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7];
B = 2;
N = 3;
C = decimate(A, B, N)

Related Topics

fir_win
iir_cheby1
iir_cheby1ord
iir_cheby1zpk


 

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