Signal-to-noise ratio (SNR) is a measure used in various fields such as engineering, telecommunications, and signal processing to quantify the ratio of the strength of a desired signal to the strength of background noise present in a system or environment. It is typically expressed in decibels and represents the quality and clarity of a signal relative to the amount of background noise present. A higher SNR indicates a stronger signal relative to the noise, resulting in clearer and more accurate data transmission or interpretation. Engineers and researchers often strive to maximize the SNR in a system to improve performance and accuracy. Different techniques and technologies can be used to enhance SNR, such as signal processing algorithms, noise reduction mechanisms, and improved signal transmission methods.