Define the term "signal-to-noise ratio" (SNR).

The term "signal-to-noise ratio" (SNR) specifically refers to a measure that compares the level of a desired signal to the level of background noise. In communications and electronics, SNR is critical because it quantifies how much a signal has been corrupted by noise. A higher SNR indicates a clearer and more reliable signal, which is crucial for effective communication.

When assessing the quality of any audio, video, or data transmission, understanding SNR helps technicians and engineers determine the fidelity of the communication. This relationship between the signal and the noise allows for adjustments in various systems to improve performance and ensure that the communication remains intelligible.