[Translate to English:] Abschlussarbeiten

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Uniform resolution spherical microphone array encoder

Abstract Recordings of spatial sound scenes with compact spherical microphone arrays resolve low-frequency content at a lower Ambisonics spatial resolution than high frequencies. The resulting decoded Ambisonics signals behave differently than those of artificial object-based sound-scene compositions. This master thesis develops an algorithm that decodes time-variant directional signals of the least-possible correlation and re-encodes them with uniformly high Ambisonics order. The number and constellation of these directional signals depend on the frequency bands of the encoding filters, their respective resolution, and directional content of the recording. The new approach should lead to better compatibility between recordings made by compact spherical microphone arrays and object-based, mixed Ambisonics signals.
Authors Drack, V.
Supervisors Zotter, F., Höldrich, R.
Year of Publication 2022
Publication Type Master's thesis
Note Spatial Audio
Status in progress
Keywords Ambisonics,acoustics,audio recording,B-format,modal array processing,signal processing,Spatial Audio