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dmorris619
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I am trying to get an understanding of what a good signal to noise ratio in terms of decibels. My SNR is roughly 20 dB, and am concerned about being able to resolve the signal from this.
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Signal-Noise Ratio (SNR) is a measure of how much stronger a signal is than the background noise in a system. It is typically measured in decibels (dB) and is used to evaluate the quality of a signal.
SNR is calculated by dividing the power of a signal by the power of the noise in a system. The resulting value is then converted to decibels using the formula SNR(dB) = 10log10(SNR).
SNR is important because it can affect the accuracy and reliability of a signal. A high SNR indicates a strong signal that is not easily corrupted by noise, while a low SNR can result in errors or a poor quality signal.
SNR and decibels (dB) are directly related, with a higher SNR resulting in a larger dB value. For example, an SNR of 20 dB means the signal is 100 times stronger than the noise, while an SNR of 40 dB means the signal is 10,000 times stronger.
In signal processing, SNR is used to determine the minimum detectable signal and the maximum allowable noise for a particular system. It is also used to compare the performance of different systems and to optimize the signal-to-noise ratio for improved signal quality.