(1) The subjective environment which a listener perceives while listening to sound, such as a stereo field. See stereophonicambisonic.

(2) The area around one or more microphones; the acceptance angle of the microphone.

(3) The spatial area of electromagnetic force. (4) In video, a subgroup of visual data consisting of either the odd- or even-numbered lines of any frame. In NTSC, for example, each field is displayed separately for of a second within the total frame duration of second. For each frame, field number one contains line #1, #3…#525; field number two contains lines #2, #4…#524. PAL television broadcasts use an analogous scheme, but has a different frame rate and number of lines per frame.