International Computer Music Conference 2016 Papers Track

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Effects of Test Duration in Subjective Listening Tests

In perceptual listening tests, subjects have to listen to short sound examples and rate their sound quality.
As these tests can be quite long, a serious and practically relevant question is if participants change their rating behaviour over time, because the prolonged concentration while listening and rating leads to fatigue.
This paper presents first results of and hypotheses about changes in the rating behaviour of subjects taking a long-lasting subjective listening test evaluating different algorithms for environmental sound texture synthesis.
We found that ratings present small but statistically significant upwards tendency towards the end of the test. We put forward the hypotheses that this effect is due to the accustomation of the subjects to the artefacts present in the test stimuli.
We present the analysis of a second test evaluating wind noises in interor car recordings and find similar effects.

Author(s):

Diemo Schwarz     web site
R&D
Ircam
France

Guillaume Lemaitre    
R&D
Ircam
France

Mitsuko Aramaki    
LMA
France

Richard Kronland-Martinet    
LMA
France

 

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