The internal structural support of a loudspeaker when holds the voice coil and the diaphragm. (21) The basic unit of SMPTE timecodetime code, corresponding to one frame of a film or video image. Depending on the format used, SMPTE time can be defined with 24, 25 30 or 29.97 frames per second (fps). (32) In digital audio, a frame is a unit of digital information. In the CD, a frame covers six sampling periods, or 136µs.

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