Journal ArticleDOI
Computers in NMR. IV. Strategies in developing high-dynamic-range fourier transforms
TLDR
It is found that the rewriting of the Fourier transform to scale data only when arithmetic overflow occurs, rather than before each pass, results in a twofold increase in the available dynamic range.About:
This article is published in Journal of Magnetic Resonance.The article was published on 1977-12-01. It has received 12 citations till now. The article focuses on the topics: Discrete sine transform & Non-uniform discrete Fourier transform.read more
Citations
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Journal ArticleDOI
Solvent suppression in Fourier transform nuclear magnetic resonance
TL;DR: New pulse sequences for solvent suppression in Fourier transform NMR are derived and evaluated, and the most satisfactory sequences consist of equally spaced hard pulses with lengths in the ratio of binomial coefficients and phases alternating between 0 and 180°.
Journal ArticleDOI
Digitisation and data processing in Fourier transform NMR
Book ChapterDOI
[3] Solvent suppression
TL;DR: In this article, the authors discuss the practical advantages and disadvantages of the major methods of solvent suppression, without going into the theory behind them, focusing on techniques developed during the past 5 years; earlier methods have been extensively reviewed elsewhere.
Journal ArticleDOI
Ultra-high resolution NMR
Adam Allerhand,Steven R. Maple +1 more
TL;DR: The authors show that methodology recently developed in their laboratory increases the power NMR for analysis of complex mixtures, and illustrate the many important analytical problems that can be solved by means of ultra-high resolution NMR methods.
Journal ArticleDOI
Coupling of hplc and NMR. 2. Analysis of flowing liquid chromatographic fractions by proton magnetic resonance in the presence of hydrogen-containing eluting solvents
TL;DR: In this paper, the Fourier transform NMR spectra of flowing high-pressure liquid chromatography (hplc) fractions of barbituric acids dissolved in hydrogen-chloroform were obtained.
References
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Journal ArticleDOI
Suggestion for a Fast Binary Sine/Cosine Generator
TL;DR: A combinational two-dimensional array for the rapid generation of sines and cosines is described, a spatial realization of a continued product algorithm which uses multiplication by (1 + jEk2-k).
Journal ArticleDOI
Computers in NMR. II. experimental investigation of noise and dynamic range in the fourier transform process
TL;DR: In this paper, the Fourier transform noise was examined experimentally using specially prepared programs, and it was found that the dynamic range observable following a Fourier transformation is proportional to the computer's word length and inversely proportional to both the number of transformed words and the memory locations full at the outset of the transform.
Journal ArticleDOI
Computers in NMR—I: Signal averaging in Fourier transform NMR
TL;DR: Techniques for dealing with signals having a high dynamic range in Fourier transform nmr are discussed, and the limitations imposed by the transform itself are pointed out.
Journal ArticleDOI
Computers in nmr—III.: Algorithm for continuously variable knob-controlled CRT display expansion
TL;DR: An algorithm for reading two knobs using an ADC and using one to shift any point in a spectrum to the center of the CRT and the other to describe the number of points to be displayed allows continuously variable expansion of the display from full scale to a single point so that flicker is minimized.