The doctoral dissertation of M.Sc. Gaëtan Lorho
08.06.2010 / 12:00 - 15:00
Perceived quality evaluation: What can audio learn from food science?
Name of the dissertation:
Perceived quality evaluation: An application to sound reproduction over headphones
Quality assessment of loudspeakers, headphones and other high-end audio systems is ultimately a perceptual matter and it often requires listening tests in addition to conventional instrumental measures. Techniques relying on a panel of sensory experts have been developed in the food industry to assess and optimize the perceived quality of aliments and beverages and the aim of this thesis is to apply and adapt such methods to the field of audio.
The specific case of signal processing algorithms for the spatial enhancement of music and movie sound reproduction over headphones is addressed and two different types of sensory analysis techniques are exploited to unravel the perceptual characteristics of this application.
The result of this work illustrates the potential of food science techniques and highlights the required adaptations for an effective transfer to the perceptual domain of audio.
Concepts and techniques presented in this thesis are applicable to many audio quality problems and can be adapted to other perceptual domains.
Opponents: Ph.D. Brian FG Katz, France
Prof. El Mostafa Qannari, France
Supervisor: Professor Matti Karjalainen, Aalto University School of Science and Technology, Finland.
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