Thesis

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Perceptually Motivated Ambient Scene Recording and Parametric Source Embedding

Authors Frauscher, E.
Year 2018
Thesis Type Master's thesis
Topic Audio Signal Processing
Keywords Spatial Audio
Abstract Various auditory experiments rely on the availability of highly authentic or highly plausible reference reproductions of real acoustic environments, for which the required capture, reproduction, and customization methods are investigated in this work. Most of the current approaches are based on simulated room impulse responses which allows a great freedom in customization; however, they can still be challenging as not all simulation settings will sound natural. As an alternative, this thesis targets a hybrid spatial recording and reproduction technique that allows to record real 3-dimensional acoustic scenes, and to customize them by parameterising embedded source material or the given recording by modifying its content. To preserve naturalness, parameterization requires to utilize estimated sound field parameters derived either from features captured in the recording environment or the recording itself. The proposed capture and parameterization approaches target loudspeaker-based reproduction. They are tested against reference dummy head and main microphone recordings in listening experiments to evaluate their authenticity and plausibility, among some relevant attributes.
Supervisors Zotter, F., Höldrich, R.