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Simplified and Enhanced LRC File Formats for Audio Synchronization

Learn about the intuitive LRC file format that synchronizes lyrics with audio in a simple syntax, and explore the enhanced syntax for precise word-level synchronization. Discover the advantages, limitations, and available programs for text-to-audio synchronization.

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Simplified and Enhanced LRC File Formats for Audio Synchronization

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  1. Method: LRC File Format • A file that accompanies a piece of audio • The LRC file consists of words and time stamps • Audio file is not modified in any way

  2. LRC File Simple Syntax [mm:ss.xx] lyrics line 1 [mm:ss.xx] lyrics line 2 ... [mm:ss.xx] last lyrics line • Very intuitive to write and read • Will only display one line at a time, not specific words

  3. Example of LRC Functionality

  4. LRC File Enhanced Syntax [mm:ss.xx] <mm:ss.xx> line 1 word 1 <mm:ss.xx> line 1 word 2 <mm:ss.xx> ... line 1 last word <mm:ss.xx> [mm:ss.xx] <mm:ss.xx> line 2 word 1 <mm:ss.xx> line 2 word 2 <mm:ss.xx> ... line 2 last word <mm:ss.xx> ... [mm:ss.xx] <mm:ss.xx> last line word 1 <mm:ss.xx> last line word 2 <mm:ss.xx> ... last line last word <mm:ss.xx> • The enhanced format provides greater flexibility and accuracy while synchronizing text • Limited in that the user is not able to synchronize by syllable

  5. Execution • There are several available programs that allow the end user to view the synchronization • The LRC file typically has the same name as the audio file • Some programs allow for files to be developed for videos, much like subtitles

  6. Advantages • Anyone can synchronize text to audio • Completely separate synchronization file • Easy to modify to improve accuracy • Extensive library of files exists • Cannot synchronize anything smaller than a word • Great effort is needed to generate word level synchronization Limitations

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