THE AUDITORY MODELING TOOLBOX

This documentation page applies to an outdated major AMT version. We show it for archival purposes only.
Click here for the documentation menu and here to download the latest AMT (1.6.0).

View the code

Go to function

ZIEGELWANGER2013 - Time of arrival estimates

Usage

[Obj,results]=ziegelwanger2013(Obj,method,model,p0_onaxis)

Input parameters

Obj SOFA object
method (Optional) Select one of the estimation methods
model
(Optional) Correct estimated toa, using geometrical
TOA-Model. If \(model=0\) use TOA estimated, if \(model=1\) use TOA modeled (default).
p0_onaxis (optional) Starting values for lsqcurvefit

Output parameters

Obj SOFA Object
results.toa
data matrix with time of arrival (TOA) for each impulse response (IR):
results.p_onaxis
estimated on-axis model-parameters
results.p_offaxis
estimated off-axis model-parameters

Estimates the Time-of-Arrival for each measurement in Obj (SOFA) and corrects the results with a geometrical model of the head.

The value of method is an integer choosing one of the following methods. XXX Explain for each method a little about how they work:

  1. Threshold-Detection
  2. Centroid of squared IR
  3. Mean Groupdelay
  4. Minimal-Phase Cross-Correlation (Max) (default)

Requirements:

  1. SOFA API from http://sourceforge.net/projects/sofacoustics for Matlab (in e.g. thirdparty/SOFA)
  2. Optimization Toolbox for Matlab
  3. Data in hrtf/ziegelwanger2013

Examples:

To calculate the model parameters for the on-axis time-of-arrival model (p_onaxis) and for the off-axis time-of-arrival model (p_offaxis) for a given HRTF set (SOFA object, 'Obj') with the minimum-phase cross-correlation method, use:

[Obj,results]=ziegelwanger2013(Obj,4,1);

References:

P. Majdak and H. Ziegelwanger. Continuous-direction model of the broadband time-of-arrival in the head-related transfer functions. In ICA 2013 Montreal, volume 19, page 050016, Montreal, Canada, 2013. ASA. [ DOI ]

H. Ziegelwanger and P. Majdak. Modeling the broadband time-of-arrival of the head-related transfer functions for binaural audio. In Proceedings of the 134th Convention of the Audio Engineering Society, page 7, Rome, 2013.

Build with Bootstrap