# ust

CEFR C2 · Noun

Source: https://englishreference.com/word/ust
Updated: 2026-05-08

## Definition

a file used in a specific singing software called UTAU. It contains the notes and lyrics that a digital voice will sing.

For teachers: a project file format used by the UTAU vocal synthesis software. It stores sequence data including pitch, duration, and phoneme assignments for a vocal performance.

## Examples

- I downloaded a new ust to make the digital singer perform a song.
- The producer shared the ust file so that other creators could tune the vocals for their own covers.
- Advanced users often manipulate the parameters within a ust to achieve more realistic vibrato and smoother transitions between different phonetic samples in the voicebank.

## Usage notes

- Commonly used as an acronym for 'UTAU Sequence Text'; often functions as a file extension (.ust).

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