Sampling rate conversion based on DFT and DCT

Authors:
Guoan Bi;Sanjit. K. Mitra;Shenghong Li
Affiliations:
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore;Department of Electrical and Computer Engineering University of California Santa Barbara, California USA;Department of Electronic Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, China
Venue:
Signal Processing
Year:
2013

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Abstract

This paper presents methods for rational sampling rate conversion performed in the domains of discrete Fourier transform and discrete cosine transform. Several important issues, such as the conversion error performance and the required computational complexity based on the proposed fast transform algorithms, are discussed in detail. Compared to the conventional lowpass filter based time-domain methods that have been commonly used for many applications, the proposed ones are shown to achieve substantial improvements on conversion accuracy at reduced computational costs.