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Initial investigation of signal capture techniques for objective measurement of spatial impression considering head movement

Kim, C, Mason, R and Brookes, T (2008) Initial investigation of signal capture techniques for objective measurement of spatial impression considering head movement In: 124th Audio Engineering Society Convention, 2008-05-17 - 2008-05-20, Amsterdam, The Netherlands.

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Abstract

In a previous study it was discovered that listeners normally make head movements attempting to evaluate source width and envelopment as well as source location. To accommodate this finding in the development of an objective measurement model for spatial impression, two capturing models were introduced and designed in this research, based on binaural technique: 1) rotating Head And Torso Simulator (HATS), and 2) a sphere with multiple microphones. As an initial study, measurements of interaural time difference (ITD), level difference (ILD) and cross-correlation coefficient (IACC) made with the HATS were compared with those made with a sphere containing two microphones. The magnitude of the differences was judged in a perceptually relevant manner by comparing them with the just-noticeable differences (JNDs) of these parameters. The results showed that the differences were generally not negligible, implying the necessity of enhancement of the sphere model, possibly by introducing equivalents of the pinnae or torso. An exception was the case of IACC, where the reference of JND specification affected the perceptual significance of its difference between the two models.

Item Type: Conference or Workshop Item (Paper)
Related URLs:
Divisions: Faculty of Arts and Human Sciences > School of Arts > Sound Recording
Depositing User: Symplectic Elements
Date Deposited: 10 Oct 2012 14:33
Last Modified: 23 Sep 2013 19:35
URI: http://epubs.surrey.ac.uk/id/eprint/712917

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