fft_bandblock

 

Description

Performs band block filtering of signal. The filtering is performed by using FFT functions.

Syntax

int fft_bandblock( Curve & crvSignal, double dFLow, double dFHigh, bool bAddOffset = true )

int fft_bandblock( vector & vecSignal, double dFLow, double dFHigh, vector * vecTime = NULL, bool bAddOffset = true )

Parameters

crvSignal
[modify]Input: signal data; Output: filtered signal
dFLow
[Input] lower cutoff frequency
dFHigh
[Input] higher cutoff frequency
bAddOffset
[Input] add back DC offset after filtering(true) or not (false).
default is true.

vecSignal
[modify]Input: signal data; Output: filtered signal
dFLow
[Input] lower cutoff frequency
dFHigh
[Input] higher cutoff frequency
vecTime
[Input] frequence sequence. default is NULL.
bAddOffset
[Input] add back DC offset after filtering(true) or not (false).
default is true.

Return

OE_NOERROR: success

positive: FFT error code


OE_NOERROR: success

positive: FFT error code

Examples

EX1

//Before compile this example, run the following LabTalk command in Command Window:
//                run.LoadOC("Originlab\fft_utils.c", 16);
 
#include <fft_utils.h> 
void fft_bandblock_ex1()
{
    double dFLow = 1.0, dFHigh = 6.5;
    vector vecX ;
    vector vecY;
    vecX.Data(1.0,10.0,1.0);
    vecY.Normal(10);
    Curve crvSignal(vecX, vecY);
    int iRet = fft_bandblock(crvSignal, dFLow, dFHigh);
}


EX2

//Before compile this example, run the following LabTalk command in Command Window:
//                run.LoadOC("Originlab\fft_utils.c", 16);
 
#include <fft_utils.h> 
void fft_bandblock_ex2()
{
    double dFLow = 1.0, dFHigh = 6.5;
    vector vecX;
    vector vecY;
    vecY.Normal(10);
    vecX.Data(1.0,10.0,1);
    int iRet = fft_bandblock(vecY, dFLow, dFHigh, &vecX);
}

Remark

See Also

fft_bandpass

Header to Include

fft_utils.h

Reference