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Sensory Profiling of High-End Loudspeakers Using Rapid Methods—Part 3: Check-All-That-Apply with Naïve Assessors

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Faster sensory profiling methods are gaining interest because they do not require a training phase and can be performed by trained or untrained assessors. As the 3rd article in a series, this paper considers the check-all-that-apply (CATA) method with high-end loudspeakers. A CATA question is a multiple-choice question where participants are presented with a list of descriptive attributes (words or phrases) and a product to be evaluated. Listeners are then asked to select all the attributes that they think apply to the product. A preliminary test was conducted with naïve assessors to reduce a list of possible attributes to a suitable number appropriate for a CATA question. A listening test was then conducted with naïve assessors using the CATA method, and two methods for characterizing the loudspeakers were explored using Correspondence Analysis (CA) and Hierarchical Cluster Analysis (HCA). CA produced bidimensional plots for each track, allowing characterization inferred from the positioning of loudspeakers and attributes. HCA provided four clusters of loudspeaker-track combinations, with attributes that best describe each cluster. The CATA method was able to produce discriminative and descriptive characterizations of the loudspeakers.

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JAES Volume 66 Issue 5 pp. 329-342; May 2018
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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=19564

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