Howtosignalprocessing
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- How do you measure the amount of noise in a signal?
- How do you determine the noise floor of a signal?
How do you measure the amount of noise in a signal?
Often the best way to measure the noise is to locate a section of the signal on the baseline where the signal is flat and to compute the standard deviation in that section. This is easy to do with a computer if the signal is digitized.
How do you determine the noise floor of a signal?
Noise Levels in the System
To be exact, one can take the thermal noise floor of the earth at room temperature (PThermal) and add 10 times the log of the 3 dB bandwidth of the system of interest and arrive at the noise floor of the system.
