THE AUDITORY MODELING TOOLBOX

Applies to version: 1.1.0

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DAU1997 - Linear filtering for monaural masking (improved)

Usage

[outsig, fc] = dau1997(insig,fs);
[outsig, fc] = dau1997(insig,fs,...);


Description

Input parameter:
insig : input acoustic signal. fs : sampling rate.

dau1997(insig,fs) computes the internal representation of the signal insig sampled with a frequency of fs Hz.

[outsig,fc,mfc]=dau1997(...) additionally returns the center frequencies of the filter bank and the center frequencies of the modulation filterbank.

The model consists of the following stages:

1. a gammatone filter bank with 1-erb spaced filtes.
2. an envelope extraction stage done by half-wave rectification followed by low-pass filtering to 1000 Hz.