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What is signal to noise ratio?

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Signal-to-noise ratio (abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. It is defined as the ratio of signal power to the noise power, often expressed in decibels.
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Signal to noise ratio is defined as the ratio of power of signal to the power of noise. The signal is the needed information and the noise is an unwanted signal. This is a parameter used by Shannon to give a relationship between signal power and noise power. SNR=Signal Power/ Noise Power. SNR in decibels(db)...
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Signal to noise ratio is defined as the ratio of power of signal to the power of noise. The signal is the needed information and the noise is an unwanted signal. This is a parameter used by Shannon to give a relationship between signal power and noise power. SNR=Signal Power/ Noise Power. SNR in decibels(db) gives how much the intended signal exceeds noise signal. SNRdb= 10log to the base 10 SNR read less
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