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Performance evaluation of algorithms for arbitrary sample rate conversion

: Franck, A.

Audio Engineering Society -AES-:
131st Audio Engineering Society Convention 2011. Vol.1 : New York, New York, USA, 20 - 23 October 2011
Red Hook, NY: Curran, 2012
ISBN: 978-1-61839-396-8
Audio Engineering Society (Convention) <131, 2011, New York/NY>
Conference Paper
Fraunhofer IDMT ()

Arbitrary sample rate conversion (ASRC) enables changes of the sampling frequency by flexible, time-varying ratios. It can be utilized advantageously in many applications of audio signal processing. Consequently, numerous algorithms for ASRC have been proposed. However, it is often difficult to choose a minimal-cost algorithm that meets the requirements of a specific application. In this paper, several approaches to ASRC are reviewed. Special emphasis is placed on algorithms that enable optimal designs, which minimize the resampling error with respect to a selectable norm. Evaluations are performed to assess the computational efficiency of different algorithms as a function of the achievable quality. These analyses demonstrate that structures based on oversampling and resampling filters specifically adapted to this structure yield significant performance improvements over established algorithms.