The improvement in S/N in progressing from top to bottom spectrum in figure 5-10 needs to be calculated. The factor that improvesthe S/N value in progressing from middle spectrum to bottom in figure 5-10 needs to be determined.
Signal-to-noise ratio (S/N) is a scale used in engineering and science to compare the level of the signal to the background noise. It is defined as ratio of power of signal to the noise and it is expressed in decibels.
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