PAUSCH2022 - ITD prediction in the horizontal plane for adult listeners with hearing aids

Usage

[itd, itd_max, itd_arg_max_phi, coef, fig] = pausch2022(featVec, varargin)

Input parameters

featVec

Vector containing magnitudes in mm of the features used for the specific model implementation, see [1; Tab. 2 and Sec. 3.4]

if 'type_stf'=='hrtf': [x1, x2, x3, x4, x5]
if 'type_stf'=={'hartf_front','hartf_rear'}: [x1, x2, x3, d13, d14]
x1: head width in mm [double]
x2: head height in mm [double]
x3: head depth in mm [double]
x4: pinna offset down in mm (only required if type_stf=='hrtf') [double]
x5: pinna offset back in mm (only required if type_stf=='hrtf') [double]
d13: HA-microphone offset up in mm (only required if type_stf=={'hartf_front','hartf_rear'}) [double]
d14: HA-microphone offset back in mm (only required if type_stf=={'hartf_front','hartf_rear'}) [double]

Output parameters

`itd`	predicted ITDs in s for type_stf as per type_mod [double]
`itd_max`	interaural-time-difference maximum, max{ITD} [double]
`itd_arg_max_phi`	argument of the interaural-time-difference maximum, arg max_phi{ITD} [double]
`coef`	model coefficients as estimated after applying the polynomial regression weights to the subset of individual features [double]
`fig`	figure handle [matlab.ui.Figure]

Description

pausch2022() contains a novel hybrid model to predict the interaural time differences (ITDs) in the horizontal plane for adults with normal hearing, listening via head-related transfer functions (HRTFs), or adults fitted with behind-the-ear hearing aids (HA), listening via hearing-aid-related transfer functions (HARTFs). It also contains two previous analythical ITD models [2,3,4]. The ITD predictions in all models are based on invividual anthropometric features, or features describing the individual placement of the HAs, see [1] for further details.

The type_mod flag may be used to select the ITD model for the ITD predictions (only required if type_stf=='weights'):

`'pausch'`	hybrid ITD model by Pausch et al. [1] (default)
`'kuhn'`	analytic ITD model by Kuhn [2]
`'woodworth'`	analytic ITD model by Woodworth [3]
`'woodworth_ext'`	analytic ITD model by Woodworth [3] extended by Aaronson and Hartmann (far-field assumption) [4]

Note: To evaluate type_mod=='woodworth_ext', additional key/value pairs for the features x5 (only if type_stf=={'hartf_front','hartf_rear'}), d9, d10, and Theta3 have to be specified.

The type_stf flag may be used to choose between one of the following:

`'hrtf'`	load individual HRTF datasets
`'hartf_front'`	load invidual front HARTF datasets
`'hartf_rear'`	load invidual rear HARTF datasets

The plot flags may be:

`'no_plot'`	No plot (default).
`'plot'`	plot predicted ITDs over azi_min:azi_res:azi_max (default: false) [logical]

Additional key/value pairs include:

`'d9'`	HA-microphones-to-ear-canal offset in mm (default: []) [double]
`'d10'`	HA-microphones-to-scalp offset in mm (default: []) [double]
`'Theta3'`	frontal HA-microphones angle in deg (default: []) [double]
`'azi_min'`	minimum evaluation angle of azimuth range in deg (default: 0) [double]
`'azi_max'`	maximum evaluation angle of azimuth range in deg (default: 180) [double]
`'azi_res'`	angular resolution of the evaluated azimuth range in deg (default: 2.5) [double]
`'c'`	speed of sound in m/s (default: 343) [double]

References: