# upmix

> English word · Verb

## Definitions
1. To demix a downmixed track and increase the number of channels: convert mono into stereo, or stereo into surround sound, etc.

## Etymology
From up- + mix, formed from downmix.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/upmix