MHASignal::spectrum_t Class Reference

a signal processing class for spectral data (based on mha_spec_t) More...

Inheritance diagram for MHASignal::spectrum_t:

Public Member Functions
	spectrum_t (const unsigned int &frames, const unsigned int &channels)
	constructor of spectrum class More...
	spectrum_t (const mha_spec_t &)
	Copy constructor. More...
	spectrum_t (const MHASignal::spectrum_t &)
	Copy constructor. More...
	spectrum_t (const std::vector< mha_complex_t > &)
virtual	~spectrum_t (void)
mha_complex_t &	operator() (unsigned int f, unsigned int ch)
	Access to element. More...
mha_complex_t &	operator[] (unsigned int k)
	Access to a single element, direct index into data buffer. More...
mha_complex_t &	value (unsigned int f, unsigned int ch)
	Access to element. More...
void	copy (const mha_spec_t &)
	copy all elements from a spectrum More...
void	copy_channel (const mha_spec_t &s, unsigned sch, unsigned dch)
	Copy one channel of a given spectrum signal to a target channel. More...
void	export_to (mha_spec_t &)
	copy elements to spectrum structure More...
void	scale (const unsigned int &, const unsigned int &, const unsigned int &, const mha_real_t &)
	scale section [a,b) in channel "ch" by "val" More...
void	scale_channel (const unsigned int &, const mha_real_t &)
	scale all elements in one channel More...

Additional Inherited Members
Public Attributes inherited from mha_spec_t
mha_complex_t *	buf
	signal buffer More...
unsigned int	num_channels
	number of channels More...
unsigned int	num_frames
	number of frames in each channel More...
mha_channel_info_t *	channel_info
	detailed channel description More...

Detailed Description

a signal processing class for spectral data (based on mha_spec_t)

Constructor & Destructor Documentation

spectrum_t() [1/4]

spectrum_t::spectrum_t	(	const unsigned int &	frames,
		const unsigned int &	channels
	)

constructor of spectrum class

Allocates buffers and initializes memory to zeros.

Parameters

frames	number of frames (fft bins) in one channel. Number of Frames is usually fftlen / 2 + 1
channels	number of channels

spectrum_t() [2/4]

spectrum_t::spectrum_t ( const mha_spec_t &  src )

explicit

Copy constructor.

spectrum_t() [3/4]

spectrum_t::spectrum_t

(

const MHASignal::spectrum_t &

src

)

Copy constructor.

spectrum_t() [4/4]

spectrum_t::spectrum_t

(

const std::vector< mha_complex_t > &

src

)

~spectrum_t()

spectrum_t::~spectrum_t ( void  )

virtual

Reimplemented in MHA_AC::spectrum_t.

Member Function Documentation

operator()()

mha_complex_t& MHASignal::spectrum_t::operator() ( unsigned int  f, unsigned int  ch  )

inline

Access to element.

Parameters

f	Bin number
ch	Channel number

Returns

Reference to element

operator[]()

mha_complex_t& MHASignal::spectrum_t::operator[] ( unsigned int  k )

inline

Access to a single element, direct index into data buffer.

Parameters

k	Buffer index

Returns

Reference to element

value()

mha_complex_t& MHASignal::spectrum_t::value ( unsigned int  f, unsigned int  ch  )

inline

Access to element.

Parameters

f	Bin number
ch	Channel number

Returns

Reference to element

copy()

void spectrum_t::copy

(

const mha_spec_t &

src

)

copy all elements from a spectrum

Parameters

src	input spectrum

copy_channel()

void spectrum_t::copy_channel	(	const mha_spec_t &	s,
		unsigned	sch,
		unsigned	dch
	)

Copy one channel of a given spectrum signal to a target channel.

Parameters

s	Input spectrum signal
sch	Channel index in source signal
dch	Channel index in destination (this) signal

export_to()

void spectrum_t::export_to

(

mha_spec_t &

dest

)

copy elements to spectrum structure

Parameters

dest	destination spectrum structure

scale()

void spectrum_t::scale	(	const unsigned int &	a,
		const unsigned int &	b,
		const unsigned int &	ch,
		const mha_real_t &	val
	)

scale section [a,b) in channel "ch" by "val"

Parameters

a	starting frame
b	end frame (excluded)
ch	channel number
val	scale factor

scale_channel()

void spectrum_t::scale_channel	(	const unsigned int &	ch,
		const mha_real_t &	src
	)

scale all elements in one channel

Parameters

ch	channel number
src	scale factor

---

The documentation for this class was generated from the following files:

• mha_signal.hh
• mha_signal.cpp