Ci_simulation_ace_cfg Class Reference

Runtime configuration class for generating an electrodogram from an audio signal, using a stimulation strategy similar to a typical ACE (advanced combination encoder, n-of-m) coding strategy with 22 channels. More...

Public Member Functions
	Ci_simulation_ace_cfg (unsigned int n_electrodes, mha_real_t compression_coefficient, mha_real_t base_level, mha_real_t saturation_level, std::vector< mha_real_t > threshold_level, std::vector< mha_real_t > comfort_level, std::vector< int > disabled_electrodes, unsigned int stimulation_order, std::default_random_engine random_number_generator)
	Constructor of the runtime configuration class. More...
mha_spec_t *	process (mha_spec_t *signal, MHA_AC::waveform_t *electrodogram_ac)
	Process function of the runtime configuration class (main signal processing function). More...

Private Attributes
unsigned int	n_electrodes_cfg
	Number of active electrodes (cannot be changed at runtime) More...
mha_real_t	compression_coefficient_cfg
	Compression coefficient of the loudness growth function. More...
mha_real_t	base_level_cfg
	Base level of the input (acoustic) dynamic range / Pa. More...
mha_real_t	saturation_level_cfg
	Saturation level of the input (acoustic) dynamic range / Pa. More...
std::vector< mha_real_t >	threshold_level_cfg
	Vector containing the threshold level of the output (electric) dynamic range for each electrode / CU. More...
std::vector< mha_real_t >	comfort_level_cfg
	Vector containing the comfort level of the output (electric) dynamic range for each electrode / CU. More...
std::vector< int >	disabled_electrodes_cfg
	Vector containing the indices of any disabled electrodes. More...
unsigned int	stimulation_order_cfg
	Electrode stimulation order. More...
std::default_random_engine	random_number_generator_cfg
	Random number generator for randomization of stimulation order. More...

Detailed Description

Runtime configuration class for generating an electrodogram from an audio signal, using a stimulation strategy similar to a typical ACE (advanced combination encoder, n-of-m) coding strategy with 22 channels.

Constructor & Destructor Documentation

Ci_simulation_ace_cfg()

Ci_simulation_ace_cfg::Ci_simulation_ace_cfg	(	unsigned int	n_electrodes,
		mha_real_t	compression_coefficient,
		mha_real_t	base_level,
		mha_real_t	saturation_level,
		std::vector< mha_real_t >	threshold_level,
		std::vector< mha_real_t >	comfort_level,
		std::vector< int >	disabled_electrodes,
		unsigned int	stimulation_order,
		std::default_random_engine	random_number_generator
	)

Constructor of the runtime configuration class.

Parameters

n_electrodes	Number of active electrodes (cannot be changed at runtime)
compression_coefficient	Compression coefficient of the loudness growth function
base_level	Base level of the input (acoustic) dynamic range / Pa
saturation_level	Saturation level of the input (acoustic) dynamic range / Pa
threshold_level	Vector containing the threshold level of the output (electric) dynamic range for each electrode / CU
comfort_level	Vector containing the comfort level of the output (electric) dynamic range for each electrode / CU
disabled_electrodes	Vector containing the indices of any disabled electrodes
stimulation_order	Electrode stimulation order
random_number_generator	Random number generator for randomization of stimulation order

Member Function Documentation

process()

mha_spec_t * Ci_simulation_ace_cfg::process	(	mha_spec_t *	signal,
		MHA_AC::waveform_t *	electrodogram_ac
	)

Process function of the runtime configuration class (main signal processing function).

It leaves the input signal fragment unchanged; its purpose is to compute the AC variable electrodogram_ac for further processing in the plugin chain

Parameters

signal	Pointer to the current input signal fragment
electrodogram_ac	AC variable containing a pointer to the electrodogram

Returns

Pointer to the (unchanged) output signal fragment

Member Data Documentation

n_electrodes_cfg

unsigned int Ci_simulation_ace_cfg::n_electrodes_cfg

private

Number of active electrodes (cannot be changed at runtime)

compression_coefficient_cfg

mha_real_t Ci_simulation_ace_cfg::compression_coefficient_cfg

private

Compression coefficient of the loudness growth function.

base_level_cfg

mha_real_t Ci_simulation_ace_cfg::base_level_cfg

private

Base level of the input (acoustic) dynamic range / Pa.

saturation_level_cfg

mha_real_t Ci_simulation_ace_cfg::saturation_level_cfg

private

Saturation level of the input (acoustic) dynamic range / Pa.

threshold_level_cfg

std::vector<mha_real_t> Ci_simulation_ace_cfg::threshold_level_cfg

private

Vector containing the threshold level of the output (electric) dynamic range for each electrode / CU.

comfort_level_cfg

std::vector<mha_real_t> Ci_simulation_ace_cfg::comfort_level_cfg

private

Vector containing the comfort level of the output (electric) dynamic range for each electrode / CU.

disabled_electrodes_cfg

std::vector<int> Ci_simulation_ace_cfg::disabled_electrodes_cfg

private

Vector containing the indices of any disabled electrodes.

stimulation_order_cfg

unsigned int Ci_simulation_ace_cfg::stimulation_order_cfg

private

Electrode stimulation order.

random_number_generator_cfg

std::default_random_engine Ci_simulation_ace_cfg::random_number_generator_cfg

private

Random number generator for randomization of stimulation order.

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

• ci_simulation_ace.hh
• ci_simulation_ace.cpp