sound recorded on and subsequently played back from an optical or photographic soundtrack, as opposed to a magnetic soundtrack.
sound recorded in the form of a photographic image on cinematograph films
noun 1. the final soundtrack on a motion picture, which appears as a band of black and white serrations along a strip of film to the left of the composite print. Light is shined through the serrations and is converted to audible sound.
- Optical time domain reflectometer
hardware A device used to perform Optical Time Domain Reflectometry. (1995-02-01)
noun 1. the technique of establishing precise reference lines and planes by means of telescopic sights, especially for the purpose of aligning machinery, machine-shop work, etc.
- Optical time domain reflectometry
Measurement of the elapsed time and intensity of light reflected on optical fibre using an optical time domain reflectometer. The reflectometer can compute the distance to problems on the fibre such as attenuation and breaks, making it a useful tool in optical network trouble-shooting. (1995-02-01)