HASSAGER2016
Sound externalization based on interaural level differences

Usage:

Pext = hassager2016(target,template)

Input parameters:

`target`	Binaural signal with the target sounds. Size: (time x ear).
`template`	Binaural reference signals. Size: (time x ear).

Output parameters:

Pext

Predicted degree of externalization.

Description:

Optional input parameters:

`'JND',jnd`	ILD JND used as minimum limit for evaluation of ILD devations. Default is 1.5 [dB].
`'c1',c1`	Gain of ILD-deviation-to-externalization mapping function (decaying exponential) acc. to Eq. (14). Default is 3.78.
`'c2',c2`	Intercept of mapping function (Eq. (14)). Default is 1.
`'z1',z1`	Scaling parameter of mapping function (Eq. (14)). Default is 0.99.
`'flow',flow`	Lowest frequency considered in auditory filterbank. Default is 50 [Hz].

This model calculates the externalization based on interaural level differences.

References:

H. G. Hassager, F. Gran, and T. Dau. The role of spectral detail in the binaural transfer function on perceived externalization in a reverberant environment. The Journal of the Acoustical Society of America, 139(5):2992--3000, 2016. [ www: ]