class SweptSine

Swept sine analysis

Inheritance:

Public Methods

	SweptSine () Default constructor.
	SweptSine (double fsample, double fstart, double fstop, int points = 101, const char* type = "log", double cycles = 10, double mintime = 0.1, double settle = 0.3, const Window* window = 0) Default constructor.
	SweptSine (const SweptSine& prm) Copy constructor.
	~SweptSine () Destructor.
SweptSine&	operator= (const SweptSine& prm) Assignment operator.
bool	Sweep (const Pipe& filter, float* f, fComplex* tf) const Sweep.
fComplex	operator) (const Pipe& filter, float f) const Sine response.
fComplex	Response (const Pipe& filter, float f) const Sine response.
double	GetSampling () const Get sampling rate.
void	SetSampling (double fsample) Set sampling rate.
double	GetFStart () const Get start frequency.
void	SetFStart (double fstart) Set start frequency.
double	GetFStop () const Get stop frequency.
void	SetFStop (double fstop) Set stop frequency.
int	GetPoints () const Get number of points.
void	SetPoints (int points) Set number of points.
const char*	GetSweepType () const Get sweep type.
void	SetSweepType (const char* type) Set sweep type.
double	GetCycles () const Get number of measurement cycles.
void	SetCycles (double cycles) Set number of measurement cycles.
double	GetMinTime () const Get minimum measurement time.
void	SetMinTime (double mintime) Set minimum measurement time.
double	GetSettlingTime () const Get settling time.
void	SetSettlingTime (double settle) Set settling time.
Window*	GetWindow () const Get window.
void	SetWindow (const Window* w) Set window.

Protected Fields

double	fFsample Sample frequency
double	fFstart Start frequency
double	fFstop Stop frequency
int	fPoints Number of points
std::string	fType Sweept type: Linear or Logarithmic
double	fCycles Number of cycles to measure
double	fMinTime Minimum time to measure
double	fSettlingTime Settling time (relative to the measurement time)
Window*	fWindow Window function

Protected Methods

bool	ComputeCoeff (Pipe& f1, float f, fComplex& tf, Window& win) const Compute a transfer coefficient

double fFsample

Sample frequency

double fFstart

Start frequency

double fFstop

Stop frequency

int fPoints

Number of points

std::string fType

Sweept type: Linear or Logarithmic

double fCycles

Number of cycles to measure

double fMinTime

Minimum time to measure

double fSettlingTime

Settling time (relative to the measurement time)

Window* fWindow

Window function

SweptSine()

Constructs a swept sine class with default parameters.

SweptSine(double fsample, double fstart, double fstop, int points = 101, const char* type = "log", double cycles = 10, double mintime = 0.1, double settle = 0.3, const Window* window = 0)

Constructs a swept sine class with default parameters.

SweptSine(const SweptSine& prm)

Copy constructor.

~SweptSine()

Destructor.

SweptSine& operator= (const SweptSine& prm)

Assignment operator.

bool Sweep(const Pipe& filter, float* f, fComplex* tf) const

Sweep a filter. The return arrays f and tf must hold at least fPoints data values.

Returns:

true if successful

Parameters:

filter - Filter
f - frequency array (return)
tf - transfer function (return)

fComplex operator) (const Pipe& filter, float f) const

Computes the filter response at a given frequency.

Returns:

transfer coefficient at frequency f

Parameters:

filter - Filter
f - frequency

fComplex Response(const Pipe& filter, float f) const

Computes the filter response at a given frequency.

Returns:

transfer coefficient at frequency f

Parameters:

filter - Filter
f - frequency

double GetSampling() const

Get sampling rate.

Returns:

sampling rate

void SetSampling(double fsample)

Set sampling rate.

Returns:

void

Parameters:

fsample - sampling rate

double GetFStart() const

Get start frequency.

Returns:

start frequency

void SetFStart(double fstart)

Set start frequency.

Returns:

void

Parameters:

fstart - start frequency

double GetFStop() const

Get stop frequency.

Returns:

stop frequency

void SetFStop(double fstop)

Set stop frequency.

Returns:

void

Parameters:

fstop - stop frequency

int GetPoints() const

Get number of points.

Returns:

number of points

void SetPoints(int points)

Set number of points.

Returns:

void

Parameters:

points - number of points

const char* GetSweepType() const

Get sweep type (linear or log).

Returns:

sweep type

void SetSweepType(const char* type)

Set sweep type (linear or log).

Returns:

void

Parameters:

type - sweep type

double GetCycles() const

Get number of measurement cycles.

Returns:

number of measurement cycles

void SetCycles(double cycles)

Set number of measurement cycles.

Returns:

void

Parameters:

cycles - number of measurement cycles

double GetMinTime() const

Get minimum measurement time (s).

Returns:

minimum measurement time

void SetMinTime(double mintime)

Set minimum measurement time (s).

Returns:

void

Parameters:

mintime - minimum measurement time

double GetSettlingTime() const

Get settling time (relative to measurement time).

Returns:

settling time

void SetSettlingTime(double settle)

Set settling time (relative to measurement time).

Returns:

void

Parameters:

settle - settling time

Window* GetWindow() const

Get window. The window is never 0. Default is Hanning.

Returns:

window

void SetWindow(const Window* w)

Set window. Window is not adopted! If set to 0, Hanning is used.

Returns:

void

Parameters:

w - window

bool ComputeCoeff(Pipe& f1, float f, fComplex& tf, Window& win) const

Compute a transfer coefficient

This class has no child classes.

Author:

Written July 2002 by Daniel Sigg

Version:

1.0

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Please send questions and comments to zweizig_j@ligo.caltech.edu

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