Fixed

Under Section 101 of the 1976 Copyright Act, "a work is fixed in a tangible medium of expression when its embodiment in a copy or phonorecord, by or under the authority of the author, is sufficiently permanent or stable to permit it to be perceived, reproduced, or otherwise communicated for a period of more than transitory duration. A work consisting of sounds, images, or both, that are being transmitted, is fixed for purposes of this title if a fixation of the work is being made simultaneously with its transmission."