11/24/2002
Noise: An Introduction
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Noise: An Introduction
•What is noise?
•Waveforms with incomplete information
–Analysis: how?
–What can we determine?
•Example: sine waves of unknown phase
–Energy Spectral Density
–Probability distribution function: P(v)
–Probability density function: p(v)
–Averages
•Common probability density functions
–Gaussian
–Exponential
•Noise in the real-world
•Noise Measurement
•Energy and Power Spectral densities