Opens in a new tab

AES E-Library

← Back to search

Convention Paper

Multidimensional Perceptual Unfolding of Spatially Processed Speech I: Deriving Stimulus Space Using INDSCAL

Authors: Martens, William L.; Zacharov, Nick

AES Convention 109 · Paper 5224 · September 2000

Abstract

Multidimensional perceptual unfolding was executed for a set of spatially processed speech samples reproduced via headphones. This paper describes only the first stage of a two-part study employing the analytic technique termed external unfolding. In this first stage, global dissimilarity ratings were made for all pair-wise comparisons of the experimental stimuli under each of four listening conditions, which included broadband or band-limited speech samples presented either simultaneously or sequentially. These four data sets were analyzed independently using INDSCAL (INdividual Differences SCALing), a method for processing inter-stimulus dissimilarity data, which has specific advantages over classical MultiDimensional Scaling (MDS) analysis. First, it is designed to characterize quantitatively the individual differences in responses obtained from a group of experimental subjects. Second, the spatial configuration of points derived for the experimental stimuli, termed the stimulus space, has an inherently unique orientation that has none of the ambiguity that makes the interpretation of classical MDS results problematic. The stimulus space derived in the first stage of this study is one of two inputs required for external unfolding. It is combined with discrete attribute ratings collected in the second stage of this study to reveal the principal perceptual attributes of the set of spatially processed speech samples and their relative salience under various conditions.:

Details

Published in
AES Convention 109
AES Convention
109
Paper number
5224
Publication date
September 6, 2000
Session subject
Perception and Psychoacoustics
Affiliation
University of Aizu, Aizuwakamatsu-shi, Japan ; Nokia Research Center, Tampere, Finland (See document for exact affiliation information.)
Type
Convention Paper