Boots – shoes – and leggings
Patent
1993-08-20
1997-01-14
Ramirez, Ellis B.
Boots, shoes, and leggings
324 7624, 324 7661, G01R 2316
Patent
active
055946550
ABSTRACT:
A data acquisition system includes an analog to digital converter, a computer processor and a waveform memory in which is stored digital data from the A to D converter corresponding to an input signal. The processor provides a trigger responsive to a characteristic of a frequency component or components of the input signal to cause the memory to save the waveform data in the memory. The frequency characteristic may be determined, for example, by carrying out a synchronized recursive discrete Fourier transform which is updated for the selected frequency component or components with each new sample from the A to D converter.
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Nicolet Instrument Corporation
Pipala Edward
Ramirez Ellis B.
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