The recording of sound, esp. by means of a phonautograph or phonograph; the construction and use of phonographs. Now chiefly historical.

the action or process of making a recording using a wire recorder; a recording made in this way.

Stereophonic reproduction; stereophonic sound.

Half the width of a magnetic tape.

= stereophony, n.

With plural and singular agreement. Stereophonic techniques; stereophonic sound.

(see quots.).

Monophonic recording or reproduction; frequently in in mono. Opposed to stereo.

Monaural (monophonic) sound recording or reproduction.

The action of over-record, v. (in various senses). Also: the recording of sound using too large a signal, so that playback is distorted.

A proprietary name used attributively and absol. to designate electronic noise-reduction systems employed esp. in tape recording to reduce hiss.

Usually with singular agreement. = quadraphony, n.

Quadraphonic sound reproduction; the use of quadraphonic techniques.

any of various systems of stereophony involving three or more speakers surrounding the listener so as to give a more realistic effect; esp. a…

Periphonic sound reproduction.

= quadraphony, n.

Sound Recording. Multitrack recording; a multitrack recording, recorder, tape, etc.

= quadraphony, n. Now rare.

= quadraphony, n.

sound reproduction in which signals from two sources are fed to four speakers in such a way as to give a partial effect of quadraphony.

Multitrack sound recording; the use of this technique. Cf. multitrack, adj. 2.

magnetic recording in which the direction of magnetization is at right angles to the plane of the recording medium.

Also with capital initial. A system of digital-to-analogue signal conversion used in some audio CD players, whereby the signal from the CD (which…