An efficient non-uniform filtering method for level-crossing sampling

Level-crossing sampling scheme is a non-uniform sampling way which can lead to lower power consumption. Unlike the classic digital signal processing, it is based on the nature of the signal changes rather than Shannon sampling theory. In this paper, a new non-uniform filtering method based on over-s...

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Bibliographic Details
Main Authors: Han, Kailin, Ying Wei, Xiaojie Ma
Format: Conference Proceeding
Language:English
Subjects:
Digital signal processing
Finite impulse response filters
FIR filter
Information science
level-crossing sampling
over-sample
Power demand
Speech
Table lookup
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Summary:Level-crossing sampling scheme is a non-uniform sampling way which can lead to lower power consumption. Unlike the classic digital signal processing, it is based on the nature of the signal changes rather than Shannon sampling theory. In this paper, a new non-uniform filtering method based on over-sampled FIR filter and look-up table was proposed to process the level-crossing samples. It is shown by the experiments that the computational complexity of the proposed one is lower than that of the uniform filtering and existing non-uniform FIR filtering techniques.
ISSN:2165-3577
DOI:10.1109/ICDSP.2016.7868633