Auditory Modelling Toolbox (AMT) 0.2 released
July 29th, 2010The article below is copied directly from the Spatial Audio Research blog of the Quality and Usability Lab at TU Berlin in order to help spread the word on this toolbox. The toolbox comes from the AABBA Project (aural assessment by means of binaural algorithms) [pdf], which was introduced by Jens Blauert at the 2009 International Symposium on Auditory and Audiological Research (ISAAR).
I’ve been using their Auditory Modelling Toolbox for the Lindemann analysis below, and found it to be very well developed.
July 26, 2010 in MATLAB by Hagen Wierstorf | No comments
A new version of the growing Auditory Modelling Toolbox has been released. The main new feature is a binaural model after Lindemann (1986a) that uses a running cross-correlation with inhibition to predict the perceived lateralization of an auditory event. The output of the model depends on the auditory filters and on the time (see figure below).
To install it, you can download it from Sourceforge. You also have to install the Linear Time/frequency Toolbox. Then in Matlab or Octave just go to the directories of the toolboxes and run:
>> ltfatstart >> amtstart
After this you are able to use the Lindemann model, see help lindemann for an introduction. To produce the figure below, you can run:
>> demo_lindemann;
Another very nice feature is the function exp_lindemann1986a that is able to reproduce the figures of the Lindemann paper. For example to reproduce figure 6 of the paper, just type exp_lindemann('fig6'). The model is under further development and will include in the next release a version of the method proposed byGaik (1993) to identify natural combinations of ITDs and ILDs. Further a version of theBreebaart model will also be included in one of the next releases.
