the ratio of signal intensity to noise intensity

The ratio of audio signal to noise. In dB (decibel) units, this indicates the level of the residual noise that is produced when absolutely no sound is being output.

(signal-to-noise ratio) Comparison of maximum signal strength against the nominal background noise generated by a device or medium to indicate how clean the signal is -- for instance, how much background noise will be heard when a tape is played. Not actually a ratio; expressed as the difference between the 2 values in decibels. The larger the difference, the better the performance of the device or medium.

Signal to Noise Ratio. Ratio of the signal power and noise power. A video S/N of 54 to 56 dB is considered to be an excellent S/N, that is, of broadcast quality. A video S/N of 48 to 52 dB is considered to be a good S/N at the head end for Cable TV.

Signal to Noise Ratio. An audio measurement of the residual noise of a unit, stated as the ratio of signal level (or power) to noise level (or power), normally expressed in decibels.

Signal-to-Noise Ratio. A measure of the quality of an electrical signal, usually at the receiver output. It is the ratio of the signal level to the noise level, measured within a specified bandwidth (typically the bandwidth of the signal). It is usually expressed in decibels. The higher the ratio, the better quality of the signal. See also C/N.

Measured in dB, the difference in level between a signal (usually a standard level) and the residual noise of the component through which it is passed; higher figures are better.

Relative power of the signal to the noise in a channel.

Signal-to-noise ratio. Also called SNR.

See signal-to-noise ratio.