DynComp::gaintable_t Class Reference

Gain table class. More...

Public Member Functions
	gaintable_t (const std::vector< mha_real_t > &LInput, const std::vector< mha_real_t > &FCenter, unsigned int channels)
	Constructor. More...
	~gaintable_t ()
void	update (std::vector< std::vector< std::vector< mha_real_t > > > newGain)
	Update gains from an external table. More...
mha_real_t	get_gain (mha_real_t Lin, mha_real_t Fin, unsigned int channel)
	Read Gain from gain table. More...
mha_real_t	get_gain (mha_real_t Lin, unsigned int band, unsigned int channel)
	Read Gain from gain table. More...
void	get_gain (const mha_wave_t &Lin, mha_wave_t &Gain)
	Read Gains from gain table. More...
unsigned int	nbands () const
	Return number of frequency bands. More...
unsigned int	nchannels () const
	Return number of audio channels. More...
std::vector< std::vector< mha_real_t > >	get_iofun () const
	Return current input-output function. More...
std::vector< mha_real_t >	get_vL () const
std::vector< mha_real_t >	get_vF () const

Private Attributes
unsigned int	num_L
unsigned int	num_F
unsigned int	num_channels
std::vector< mha_real_t >	vL
std::vector< mha_real_t >	vF
std::vector< mha_real_t >	vFlog
std::vector< std::vector< std::vector< mha_real_t > > >	data

Detailed Description

Gain table class.

This gain table is intended to efficient table lookup, i.e, interpolation of levels, and optional interpolation of frequencies. Sample input levels and sample frequencies are given in the constructor. The gain entries can be updated with the update() member function via a gain prescription rule from an auditory profile.

Constructor & Destructor Documentation

gaintable_t()

gaintable_t::gaintable_t	(	const std::vector< mha_real_t > &	LInput,
		const std::vector< mha_real_t > &	FCenter,
		unsigned int	channels
	)

Constructor.

Parameters

LInput	Input level samples, in equivalent LTASS_combined dB SPL.
FCenter	Frequency samples in Hz (e.g., center frequencies of filterbank).
channels	Number of audio channels (typically 2).

~gaintable_t()

gaintable_t::~gaintable_t

(

)

Member Function Documentation

update()

void gaintable_t::update

(

std::vector< std::vector< std::vector< mha_real_t > > >

newGain

)

Update gains from an external table.

Parameters

newGain

New gain table entries.

Dimension change is not allowed. The number of entries are checked.

get_gain() [1/3]

mha_real_t gaintable_t::get_gain	(	mha_real_t	Lin,
		mha_real_t	Fin,
		unsigned int	channel
	)

Read Gain from gain table.

Parameters

Lin	Input level
Fin	Input frequency (no match required)
channel	Audio channel

get_gain() [2/3]

mha_real_t gaintable_t::get_gain	(	mha_real_t	Lin,
		unsigned int	band,
		unsigned int	channel
	)

Read Gain from gain table.

Parameters

Lin	Input level
band	Input frequency band
channel	Audio channel

get_gain() [3/3]

void gaintable_t::get_gain	(	const mha_wave_t &	Lin,
		mha_wave_t &	Gain
	)

Read Gains from gain table.

Parameters

Lin	Input levels.
Gain	Output gain.

The number of channels in Lin and Gain must match the number of bands times number of channels in the gaintable.

nbands()

unsigned int DynComp::gaintable_t::nbands ( ) const

inline

Return number of frequency bands.

nchannels()

unsigned int DynComp::gaintable_t::nchannels ( ) const

inline

Return number of audio channels.

get_iofun()

std::vector< std::vector< mha_real_t > > gaintable_t::get_iofun

(

)

const

Return current input-output function.

get_vL()

std::vector<mha_real_t> DynComp::gaintable_t::get_vL ( ) const

inline

get_vF()

std::vector<mha_real_t> DynComp::gaintable_t::get_vF ( ) const

inline

Member Data Documentation

num_L

unsigned int DynComp::gaintable_t::num_L

private

num_F

unsigned int DynComp::gaintable_t::num_F

private

num_channels

unsigned int DynComp::gaintable_t::num_channels

private

vL

std::vector<mha_real_t> DynComp::gaintable_t::vL

private

vF

std::vector<mha_real_t> DynComp::gaintable_t::vF

private

vFlog

std::vector<mha_real_t> DynComp::gaintable_t::vFlog

private

data

std::vector<std::vector<std::vector<mha_real_t> > > DynComp::gaintable_t::data

private

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

• gaintable.h
• gaintable.cpp