2.33 ambient noise. All-encompassing sound at a given place, usually a composite of sounds from many sources near and far. Annotation 1 When the intent is...
2.32 noise. (a) Undesired sound. By extension, noise is any unwanted disturbance within a useful frequency band, such as undesired electric waves in a transmission channel or device. (b) Erratic, intermittent, or statistically random oscillation. Annotation...
2.31 signal. (a) Disturbance that conveys information. (b) Information to be conveyed over a communication system.
2.30 subharmonic. Sinusoidal quantity having a frequency which is an integral submultiple of the fundamental frequency of a periodic quantity to which it is related. Annotation An...
2.29 harmonic. Sinusoidal quantity having a frequency which is an integral multiple of the fundamental frequency. Annotation See also...
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