THE AUDITORY MODELING TOOLBOX

Applies to version: 1.2.0

View the code

Go to function

LYON2011_IHCSTEP - update of inner-hair-cell (IHC) model

Usage

[CF, decim_naps, naps, BM, ohc, agc] = lyon2011(CF, input_waves, AGC_plot_fig_num, open_loop);

Input parameters

detects The CF struct holds the filterbank design and state; if you want to break the input up into segments, you need to use the updated CF to keep the state between segments.
coeffs input_waves is a column vector if there's just one audio channel; more generally, it has a row per time sample, a column per audio channel. The input_waves are assumed to be sampled at the same rate as the CARFAC is designed for. A resampling may be needed before calling this.
state Plot automatic gain control figure. Default is 0.

Output parameters

state The CF struct holds the filterbank design and state; if you want to break the input up into segments, you need to use the updated CF to keep the state between segments.
update decim_naps is like naps but time-decimated by the int CF.decimation.

Description

lyon2011_ihcstep updates the inner-hair-cell (IHC) model, including the detection nonlinearity and one or two capacitor state variables.

References:

R. F. Lyon. Cascades of two-pole–two-zero asymmetric resonators are good models of peripheral auditory function. J. Acoust. Soc. Am., 130(6), 2011. [ http ]