Efficient Algorithms for Arbitrary Sample Rate Conversion with Application to Wave Field Synthesis
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Beschreibung
Arbitrary sample rate conversion (ASRC) is used in many fields of digital signal processing to alter the sampling rate of discrete-time signals by arbitrary, potentially time-varying ratios.
This thesis investigates efficient algorithms for ASRC and proposes several improvements. First, closed-form descriptions for the modified Farrow structure and Lagrange interpolators are derived that are directly applicable to algorithm design and analysis. Second, efficient implementation structures for ASRC algorithms are investigated. Third, this thesis considers coefficient design methods that are optimal for a selectable error norm and optional design constraints.
Finally, the performance of different algorithms is compared for several performance metrics. This enables the selection of ASRC algorithms that meet the requirements of an application with minimal complexity.
Wave field synthesis (WFS), a high-quality spatial sound reproduction technique, is the main application considered in this work. For WFS, sophisticated ASRC algorithms improve the quality of moving sound sources. However, the improvements proposed in this thesis are not limited to WFS, but applicable to general-purpose ASRC problems.
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Autor*in
Andreas Franck
Themen in »Efficient Algorithms for Arbitrary Sample Rate Conversion with Application to Wave Field Synthesis«
Abtastratenumsetzung Effizienter Algorithmus Leistungsbewertung Oversampling Resampling Wellenfeldsynthese