Blackman

class Blackman : public Window

Generalized Blackman window class

Inheritance:

Public Methods
Blackman(void): Default constructor
explicit Blackman(int len, double Beta=0.08): Full constructor
~Blackman(): Destructor
double WinFc(double x): Window function

Inherited from Window:

Public Methods
TSeries apply(const TSeries& ts)
TSeries operator)(const TSeries& ts)
void dataCheck(const TSeries& ts) const
bool isDataValid(const TSeries& ts) const
double getRMS(void)
void setWindow(int N)
virtual bool isPiSymmetric(void)

Inherited from Pipe:

Public Methods
virtual void reset(void)
virtual bool inUse(void) const
KeyChain& getInputKeys(void) const
KeyChain& getOutputKeys(void) const
virtual Time getStartTime(void) const
virtual Time getCurrentTime(void) const

Inherited from FilterBase:

Public Methods
virtual bool rootGetStartTime(Time& t) const throw()
virtual bool rootGetCurrentTime(Time& t) const throw()

Documentation

Generalized Blackman window class. The generalized Blackman window function is Wb(x) = (0.5 - Beta) - 0.5*cos(Xj) + Beta*cos(2Xj), where Xj=2*pi*j/(N-1). The classic Blackman window is given by Beta=0.08. A slight change in the parameters of the Blackman window (Beta=0.125) give a 30-dB/octave rolloff. The 30dB window can be implemented using the alternate constructor

Blackman(void)

Default constructor. Use the true Blackman window parameter, beta=0.08.

explicit Blackman(int len, double Beta=0.08)

Full constructor. Construct a generalized Blackman window of length 'len'. If beta isn't specified it defalts to the true hamming window.

~Blackman()