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Interactive virtual walkthrough by position-dependent interpolation of first-order room impulse responses

Authors Müller, K.
Year 2019
Thesis Type Master's thesis
Topic Spatial Audio
Abstract The spatial decomposition method (SDM) enables the mapping of first-order ambisonic room impulse responses to arbitrary higher orders. Thus, a sharper directionality of sound sources and reverberation can be achieved. Based on the SDM an efficient method for position-dependent interpolation of ambisonic room impulse responses will be developed first. Then influences of single components of the utilized approach will be evaluated to achieve a computational efficient algorithm which only deals with the necessary components. Finally, utilizing the position-dependent interpolation of a finite number of measured room impulse responses, a virtual acoustic walk through the room will be possible. To preserve natural acoustics when moving in the virtual room, the real-time capable algorithm is focused on consistent source positions, timbre and room impression related to the reference measurements.
Supervisors Zotter, F., Höldrich, R.