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Noise and Finite Register Effects in Infrared Fourier Transform Spectroscopy

Volume 30, Number 5 (Oct. 1976) Page 531-539

Foskett, C.T.


Finite registers used in computations act as additional noise sources in infrared Fourier transform spectroscopy. The relationship between these noise sources and classical noise sources is examined. The impact of finite register lengths on data acquisition, computation of the fast Fourier transform (FFT), and post-FFT spectral manipulations leads to the conclusion that the minimum recommended register length is 27 bits.