Detailed Description

Compute an Fast Fourier Transform.

The Module can be used to compute a Fast Fourier Transform on its input. The resulting transform is available as a vector of fftw_complex numbers. See the documentation for the library fftw3. The data can also be printed to stdout using the ascii(), html(), or json() methods. See the example in examples/FFT for a demonstration.

Parameters

[input]	signal The input signal
[output]	ready 0 when the FFT is still collecting data, and 1 otherwise

Public Member Functions
	FFT (int size)

void	init ()

void	update ()

void	ascii ()
	Print the FFT data to stdout.

void	html ()
	Print a nice plot of the FFT to stdout that can be viewed with a web browser.

std::string	json ()
	Print the FFT data as a json object to stdout.

fftw_complex *	get ()

Public Member Functions inherited from yase::Module
virtual void	init ()=0

virtual void	update ()=0

int	add_input (string name)

int	add_output (string name)

int	get_input_index (string name) const

string	get_input_name (int index) const

string	get_output_name (int index) const

int	get_output_index (string name) const

void	set_input (string name, double value)

void	set_input (int index, double value)

double	get_input (int index) const

double	get_input (string name) const

double	get_output (string name) const

double	get_output (int index) const

void	set_output (int index, double value)

void	copy_inputs (const Module &source)

void	copy_outputs (Module &destination) const

void	configure (std::vector< std::tuple< string, double > > assignments)

int	num_inputs () const

int	num_outputs () const

void	emit (Event e)

void	set_ts (double s)

double	get_ts ()

Constructor & Destructor Documentation

◆ FFT()

yase::FFT::FFT ( int size )

Construct an FFT module with the given size.

Parameters

size	The number of samples to transform

Member Function Documentation

◆ get()

fftw_complex * yase::FFT::get ( )

Get the FFT data. This method has the side effect of resetting the FFT so that it starts over.

◆ init()

void yase::FFT::init ( )

virtual

This method should be overridden by derived classes. It will usually be called once, after all modules and connections objects have been added to a synthesizer, but before the synthesizer starts running.

Implements yase::Module.

◆ update()

void yase::FFT::update ( )