CHEN2011 - Fast excitation pattern estimation

Usage:

[Ldn,E,Cam,CF] = chen2011(inputF,inputLdB)

Input parameters:

`inputF`	vector of input frequency values
`inputLdB`	vector of input level

Output parameters:

`Ldn`	loudness
`E`	excitation at the output of the passive filter
`Cam`	ERB-number in Cams (Glasberg and Moore, 1990; Moore, 2003)
`CF`	center frequency of auditory filters

Description:

chen2011 provides a fast way of loudness estimation.

Optional parameters:

`'HLcf',HLcf`	parameters to simulate hearing loss: audiogram frequencies
`'HLohcdB0',HLohcdB0`	parameters to simulate hearing loss: OHC loss at audiogram frequencies
`'HLihcdB0',HLihcdB0`	parameters to simulate hearing loss: IHC loss at audiogram frequencies
`'cambin',cambin`	spacing [ERB] between successive auditory filter CFs
`'flow',flow`	lowest center frequency of an auditory filter
`'fhigh',fhigh`	highest center frequency of an auditory filter

Moreover, the model supports 3 flags for outer ear correction ('FreeField', 'PDR10', 'Eardrum').

References:

Z. Chen, G. Hu, B. R. Glasberg, and C. Moore, Brian. A new model for calculating auditory excitation patterns and loudness for cases of cochlear hearing loss. J. Acoust. Soc. Am., 282(1), 2011.

B. R. Glasberg and B. C. J. Moore. A Model of Loudness Applicable to Time-Varying Sounds. J. Audio Eng. Soc, 50(5):331--342, 2002. [ http ]