Functional Modeling of Hearing for Assessment of Spatial Sound Reproduction

Marko Takanen

Research output: ThesisDoctoral ThesisCollection of Articles

Abstract

Auditory modeling refers to the design of computational models of the human auditory system using digital signal processing algorithms. Such models can potentially be utilized in various applications including development of hearing aids and cochlear implants as well as to explain psychoacoustical phenomena. Another practical application area is the evaluation of sound reproduction, in which the models provide an interesting alternative to the direct use of human subjects in formal listening tests. This thesis addresses the instrumental evaluation of spatial sound reproduction with a model that emulates the functionality of the auditory pathway based on neurophysiological and psychoacoustical data from the literature. However, the this thesis work also aimed to ensure a more general applicability of the model. The research involved in this work may bedivided into two main categories. The first category consists of developing auditory models and of employing them in the evaluation of sound reproduction. The thesis presents two auditory models with different goals. Namely, one of them is a applicationspecific model designed to evaluate stereophonic sound reproduction capability of small mobile devices. The other demonstrates how several psychoacoustical binaural hearing phenomena may be explained with a more detailed emulation of processing in the auditory pathway. The latter model was also applied to evaluate sound reproduction achieved with both traditional and parametric spatial sound techniques. The second category focuses on the acquisition of psychoacoustical knowledge. This category provides more insight into how the auditory system analyzes complex auditory scenarios. In addition, this category presents a listening test assessing different binaural synthesis methods in terms of coloration aspects.
Translated title of the contributionKuulon toiminnallisuuden mallintaminen tilaäänentoiston arvioimiseksi
Original languageEnglish
QualificationDoctor's degree
Awarding Institution
  • Aalto University
Supervisors/Advisors
  • Pulkki, Ville, Supervising Professor
  • Pulkki, Ville, Thesis Advisor
Publisher
Print ISBNs978-952-60-5782-8
Electronic ISBNs978-952-60-5783-5
Publication statusPublished - 2014
MoE publication typeG5 Doctoral dissertation (article)

Keywords

  • binaural hearing
  • auditory modeling
  • sound quality
  • spatial sound

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