fractional sampling

fractional sampling

[¦frak·shən·əl ′sam·pliŋ]
(mining engineering)
Mechanical selection of samples of uniformly graded material without segregation.
References in periodicals archive ?
MATLAB code examples illustrate the implementation of FIR and IIR filters for sampling rate conversion, fractional sampling rate conversion, the design of Lth-band filters, complementary filter pairs, multi-rate techniques for filter design, frequency-response masking techniques, and comb-based filters.
Of primary concern with existing fractional sampling systems is the transfer tube that transports hot undiluted exhaust from the engine stack to the dilution tunnel, Graze explained.
Measurement variability in fractional sampling systems has been shown to result primarily from thermal deposition (thermophoresis), electrophoresis of charged ions, and to a lesser extent, deposition caused by inertial impaction.
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