Abschlussarbeit

Objective and subjective evaluation of sound coloration perception of virtual sound sources

Steckbrief

Eckdaten

Professur:
HTA
Status:
angeboten
Forschungsgebiet:
Binauraltechnik,
Psychoakustik
Art der Arbeit:
Master

Betreuer

When a listener perceives two sounds as different, this can relate to different loudness levels or different source locations. All other cases, where the sounds seem to be "different" yet of equal loudness and identical sound incidence direction, are summed up by the term "sound coloration" or "timbre". Much research has been conducted on timbre in relation to music and speech, but mostly with a focus on absolute magnitude spectra only (neglecting phase information) and often with little relation to virtual audio. This Master thesis examines coloration perception in the context of HRTFs. The goal is to predict audible timbral differences between HRTF spectra, relating both to magnitude and (more importantly) phase changes. Attempts will be made to quantify the differences in coloration through objective metrics, i.e. calculations. A listening experiment will then be designed for the purpose of subjective validation, using virtual sound sources with differently processed HRTF sets. Requirements: Basic knowledge in acoustics and digital signal processing MATLAB skills