Abstract
A number of digital integrated circuits are becoming available that are specifically designed for signal processing applications (Godbole and Ali, 1981). The American Microsystems Inc. S2814A is a version of a signal processing circuit that has been specifically programmed to perform the fast Fourier transform (AMI, 1982). (The S2814A is shortly to be replaced by the compatible but redesigned S28214.) A system is described in which this circuit is used to provide frequency analysis of Doppler ultrasound signals from transcutaneous aortovelography measurements. The AMI S2814A has been incorporated into a Z80 microprocessor, S100 bus based system so that the Fourier transform values can be used immediately for further computer processing such as the calculation of the area under the maximum frequency envelope (i.e. relative stroke volume (Cross and Light, 1974)).
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Schedule a callMore From: Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics
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