What is longitudinal time code (LTC)? - Definition from WhatIs.com

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.

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

  • pixel

    - The pixel (a word invented from "picture element") is the basic unit of programmable color on a computer display or in a computer image. (WhatIs.com)

  • lossless and lossy compression

    - Lossless and lossy compression are terms that describe whether or not, in the compression of a file, all original data can be recovered when the file is uncompressed. (WhatIs.com)

  • image metadata

    - Image metadata is information about an image that is associated with the image file either automatically or deliberately added. (WhatIs.com)

Glossaries

  • Multimedia and graphics

    - Terms related to multimedia, including graphics, animation and video definitions and words and phrases about images and sound.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question About longitudinal time code (LTC)Powered by ITKnowledgeExchange.com

Get answers from your peers on your most technical challenges

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.