Super 8mm was also specified with an optical sound track.

It was the first professionally produced feature film with an optical sound track.

The original optical sound track used a studio-sized orchestra and apparently sounds terrible.

Since the mid-1990s her films have not included commentary, but are instead accompanied by often understated optical sound tracks.

Other similar musical instruments have been made from motion picture film projectors that have an optical sound track.

He arranged these shapes in sequences on the analog optical sound track to produce notes and chords.

One major application of the phototube was the reading of optical sound tracks for projected films.

The image is exposed into the region ordinarily reserved for the analog optical sound track which is rarely used now.

In the era of optical sound tracks, it was difficult to mix more than eight tracks at once without accumulating excessive noise.

As in the Carnegie Hall demonstrations six months earlier, Fantasound used a separate film containing four optical sound tracks.

The time code is a series of dots and dashes along the side of each frame between the image and the analog optical sound tracks.

Darkness congealed into a dense strip of jumbled cubes and triangles that pulsed with the roar like an optical sound track.

The time code is placed between the optical sound tracks and the actual picture, and is read by an optical LED ahead of the gate.

Optical sound tracks are visual renditions of sound wave forms and provide sound through a light beam and optical sensor within the projector.

The films were printed with an optical sound track (amateur films use magnetic sound), and spooled into proprietary cassettes that often held a whole 2-hour movie.

Magnetic recording had magnetic media in the area where the optical sound track recorded on optical SOF or on release prints.

Mr. Sutherland argued that it is routine in international film agreements to get a special magnetic sound track rather than the optical sound track that Merchant Ivory sent.

A major breakthrough in practical stereo sound was made by Bell Laboratories, who in 1937 demonstrated a practical system of two-channel stereo, using dual optical sound tracks on film.

The first film with Dolby sound was A Clockwork Orange (1971), which used Dolby noise reduction on all pre-mixes and masters, but a conventional optical sound track on release prints.

It even surpassed the sound quality of Western Electric's own sound-on-film system, developed concurrently with the sound-on-disc system but still in the laboratory at that time, because at first the discs yielded better fidelity than an optical sound track.

Film of this form is no longer manufactured, but single-perforated film without the magnetic track (allowing an optical sound track) or, in the case of 16mm, utilising the soundtrack area for a wider picture (Super 16 format) is readily available.