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The influence of reverberation on externalization

Authors Giller, P.
Year 2019
Thesis Type Master's thesis
Topic Psychoacoustics
Abstract Realistic binaural synthesis produces well externalized sound images. Externalization is a subjective quantity that refers to the sensation of auditory events being located outside the listener's head. It is a fragile experience which, in addition to the sound field at the entrance of the ear canals, also depends on visual cues, training, and expectation. Various studies have examined perceptual and technical aspects of the phenomenon. It was found that the presence of reverberation can increase the degree of externalization. Furthermore, recent findings indicate the benefit of individual HRTFs may be negligible in reverberant conditions. This work investigates how reverberation influences externalization in a listening experiment, considering different HRTFs and listening conditions. Techniques shall be developed to add helpful reverberation cues to generic HRTFs while preserving the original room impression and sound coloration. Ideally, the results will be integrated in an application for robust binaural rendering of virtual sound scenes.
Supervisors Wendt, F., Höldrich, R.