Spline wavelet multi-resolution analysis for high-noise digital signal processing in ultraviolet–visible spectrophotometry
- 1 January 1996
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 121 (8) , 1019-1024
- https://doi.org/10.1039/an9962101019
Abstract
The application of B-spline wavelet multi-resolution analysis (MRA) in UV spectrophotometry is presented, with a modified approach to signal processing. The results indicate that if the optimum B-spline wavelet and truncation frequency are selected, the absolute values of the peak relative errors are less than 2% when the signal-to-noise ratio is not less than 0.5, which means that useful signals can be separated from high-frequency noise. Most often third-order B-spline wavelet MRA is the most effective. In this respect, significant differences are observed for the different B-spline wavelets. The processed results of experiment data are also satisfactory.Keywords
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