PAUSCH2022 - ITD prediction in the horizontal plane for 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 Pausch et al. (2022), 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: Kuhn (1977), Woodworth and Schlosberg (1954), and Woodworth and Schlosberg (1954) extended by Aaronson and Hartmann (2014). The ITD predictions in all models are based on invividual anthropometric features, or features describing the individual placement of the HAs, see Pausch et al. (2022) 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. (2022) (default)
`'kuhn'`	analytic ITD model by Kuhn (1977)
`'woodworth'`	analytic ITD model by Woodworth and Schlosberg (1954)
`'woodworth_ext'`	analytic ITD model by Woodworth and Schlosberg (1954) extended by Aaronson and Hartmann (2014) (far-field assumption)

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:

F. Pausch, S. Doma, and J. Fels. Hybrid multi-harmonic model for the prediction of interaural time differences in individual behind-the-ear hearing-aid-related transfer functions. Acta Acust., 6:34, 2022. [ DOI | http ]

G. F. Kuhn. Model for the interaural time differences in the azimuthal plane. The Journal of the Acoustical Society of America, 62(1):157--167, 1977. [ DOI | arXiv | http ]

R. S. Woodworth and H. Schlosberg. Experimental psychology, Rev. ed. Holt, Oxford, England, 1954.