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longitudinal time code (LTC)

Definition

longitudinal time code (LTC)

Part of the Multimedia and graphics glossary:

Longitidinal time code (LTC) is a timing signal that is part of an audio tape recording. It is recorded on a track that runs lengthwise along the tape, which is why it is called longitudinal.

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vertical interval time code (VITC)
Vertical interval time code (abbreviated VITC a...
(WhatIs.com)

LTC is one of two timing codes adopted by the Society of Motion Picture and Television Engineers ( SMPTE ) in the 1960s. The other, known as vertical interval time code ( VITC ), is used with video recordings.

LTC assigns a specific time in hours, minutes, and seconds to various points along the tape. The LTC can therefore be used to keep a playback machine synchronized with a master time source. This can be useful in broadcasting applications where program lengths and time-slot scheduling are critical. Because the timing signal is recorded lengthwise along the tape, it is necessary for the tape to be in motion for the signal to be read.

This was last updated in March 2011

Posted by: Margaret Rouse

Related Terms

Definitions

vertical interval time code (VITC)
- Vertical interval time code (abbreviated VITC and sometimes pronounced VIHT-see) is a timing signal that is part of a video recording. (WhatIs.com)

Glossaries

Multimedia and graphics
- Terms related to multimedia, including graphics, animation and video definitions and words and phrases about images and sound.
Computing fundamentals
- Terms related to computer fundamentals, including computer hardware definitions and words and phrases about software, operating systems, peripherals and troubleshooting.
IT standards and organizations
- Terms related to information technology (IT) standards, including definitions about IT organizations and words and phrases about policies and compliance.

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