AT1

Correct the pitch of a voice singing out of tune

Music & Audio

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About

AT1 is an 'autotuner', normally used to correct the pitch of a voice singing (slightly) out of tune. Compared to 'Autotalent' it provides an improved pitch estimation algorithm, and much cleaner resampling. AT1 does not include formant correction, so it should be used to correct small errors only and not to really transpose a song. The 'expected' pitch can be controlled by Midi (via Jack only), or be a fixed set of notes. AT1 can probably be used on some instruments as well, but is primarily designed to cover the vocal range. It's also usable as a quick and dirty guitar tuner.

Additional information

Project

License: GPL-2.0-or-later (free software)What this license lets you do

Install

Available via: Arch Linux · Debian · Fedora · Void Linux · Nixpkgs

About this data

Sources: Sources disagree on the name: zitaat1 / at1
Catalog data as of: October 12, 2026

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How each source lists it (5)

Source	Name	Version	Built by	License	Description
Debian	zita-at1	0.8.2-1	Distribution build	—	JACK autotuner
Fedora	zita-at1	0.6.2	Distribution build	GPL-2.0-or-later	Audio autotuner for JACK
Arch Linux	zita-at1	0.8.2-1	Distribution build	GPL-3.0-or-later	An 'autotuner' Jack application.
Nixpkgs	zita-at1	0.8.2	Distribution build	GPL-3.0-or-later	Autotuner Jack application to correct the pitch of vocal tracks
Void Linux	zita-at1	0.8.2_1	Distribution build	GPL-3.0-or-later	Audio autotuner for JACK

Known data issues (3)

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Sources disagree on the name — Which name does the project itself use?
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