Measurement of noise impairments of TV signals
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United States of America Patent
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Aug 26, 1997
Grant Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Jun 7, 1995
priority date (Note) -
In Force
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Abstract
A method for determining the composite triple beat (CTB), composite second order beat (CSO) and/or SNOW noise of cable television signal is obtained by digitizing a quiet line and determining the Fourier transform of the digitized signal and measuring the energy in the frequency range corresponding to the particular impairment of being determined. Repeating this process a significant number of time to accumulate a significant number N of values for the impairment and then using the average of the accumulated intensity to define the amount of the impairment.
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