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Real-time high accuracy measurement of multifrequency waveforms

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2 Author(s)
Narduzzi, C. ; Istituto di Elettrotecnica e di Elettronica, Università di Padova, Via Gradenigo, 6/a, 1-35131 Padova, Italy ; Offelli, C.

This paper discusses the operating principles and the main characteristics of a digital instrument for multifrequency signal analysis. The instrument provides real-time performance in a frequency range of 5–6 kHz with high measurement accuracy, obtained by combined windowing and interpolation of computed discrete Fourier transform (DFT) coefficients. Its hardware structure and measurement software for real-time operation are thoroughly illustrated and experimental results are given.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:IM-36 ,  Issue: 4 )