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Issue No.04 - April (1976 vol.9)
pp: 27-32
R. Kitai , McMaster University
ABSTRACT
The spectrum of a frequency-limited periodic wave may be obtained rapidly by measuring its truncated Walsh spectrum, and then converting from Walsh spectrum to Fourier spectrum after the measurement. The conversion process consists of a matrix multiplication in which a measured Walsh spectrum vector, of dimension 2<sup>k</sup>, is multiplied by a 2<sup>k</sup>X 2<sup>k</sup>conversion matrix that is compensated for Walsh-spectrum truncation, to yield the corresponding Fourier spectrum vector. The microprocessor is well suited to this end; it is also useful in monitoring instrument panel switches and driving a display and print-out. This paper compares available microprocessors from the viewpoint of BCD processing?and concludes that the Fairchild PPS25 processor is the one best suited to meet the requirements.
INDEX TERMS
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CITATION
R. Kitai, I. Renyi, F. Vajda, "Using a Microprocessor in a Walsh-Fourier Spectral Analyzer", Computer, vol.9, no. 4, pp. 27-32, April 1976, doi:10.1109/C-M.1976.218557
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