# THE AUDITORY MODELING TOOLBOX

Applies to version: 1.1.0

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# takanen2013_lso - Model of the lateral superior olive

## Usage

output = takanen2013_lso(ipsilateral, contralateral, fs, fc);


## Input parameters

 ipsilateral The ipsilateral "where" stream output from the model of the periphery contralateral The contralateral "where" stream output from the model of the periphery fs sampling rate fc characteristic frequencies

## Output parameters

 output Spatial cues for separate narrow bandwidths

## Description

This function models the lateral superior olive (LSO) by processing the output of the periphery model with the following steps:

1. First-order lowpass filter is applied to both the ipsilateral and contralateral sides, and the contralateral side is delayed
2. The output is saturated at a certain dB level and limited signals.
3. Weighted moving average filters with a short and longer time constant are applied, the latter only below 1 kHz in order to slow the response

## References:

V. Pulkki and T. Hirvonen. Functional count-comparison model for binaural decoding. Acta Acustica united with Acustica, 95(5):883 -- 900, Sept./Oct. 2009.

M. Takanen, O. Santala, and V. Pulkki. Visualization of functional count-comparison-based binaural auditory model output. Hearing research, 309:147--163, 2014. PMID: 24513586. [ DOI ]