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Proceedings Paper

SI, The Quantitative Measurement Of Distortion Of Smoothed Fourier Transform Infrared Spectra
Author(s): Wang Jin Hai
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Paper Abstract

The smooth is an effective function of data process to improve the quality and the S/N ratio of FTIR spectra. Unfortunately, the smooth results in simultaneously the distortions of spectra and the loss of valuable spectral information in different extent. How many will the distortions be? How can we reduce it? No systematic research was reported up to now [1-- 4,6]. This paper presents the primary answer. Like smooth effect, distortion is proportional to the number of points (Np) and the number of runs (Nr). The distortions include the decrease of absorbance intensity, the disappear-ance of some small and/or shoulder bands and the shift of some bands to higher or lower +requencies C53. A function of smoo-th index (:r) can he used to measure the distortion extent which is de.fined for the first time by the follownd empiric formula:

Paper Details

Date Published: 1 December 1989
PDF: 1 pages
Proc. SPIE 1145, 7th Intl Conf on Fourier Transform Spectroscopy, (1 December 1989); doi: 10.1117/12.969599
Show Author Affiliations
Wang Jin Hai, Shanghai Teachers University (China)

Published in SPIE Proceedings Vol. 1145:
7th Intl Conf on Fourier Transform Spectroscopy

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