Audio Random Access

Audio Random Access (commonly abbreviated to ARA) is an extension for audio plug-in interfaces, such as AU, VST and RTAS, allowing them to exchange a greater amount of audio information with digital audio workstation (DAW) software. It was developed in a collaboration between Celemony Software and PreSonus.

Audio Random Access

Developer(s)	Celemony Software, PreSonus
Initial release	October 2011; 13 years ago (2011-10)
Type	Audio Plug-In Interface Extension

Functionality

ARA increases the amount of communication possible between DAW software and a plug-in, allowing them to exchange important information, such as audio data, tempo, pitch, and rhythm, for an entire song, rather than just at the moment of playback.

This increased amount of information exchange, and availability of data from other points in time, removes the need for audio material to be transferred to & from the plug-in, allowing that plug-in to be used as a more closely integrated part of the DAW's overall interface.^[1]

History

ARA was developed as a joint effort between Celemony Software and PreSonus, driven by the desire to increase the level of integration between Celemony's Melodyne plug-in and the DAWs using it.^[2] It was first published in October 2011 and released as part of PreSonus' Studio One DAW (version 2) and Melodyne (Editor, Assistant and Essential versions 1.3).^[2]

Version 2 of ARA was announced during the NAMM Show in January 2018, introducing new features such as the simultaneous editing of multiple tracks, transfer of chord track information, and undo synchronization with the DAW.^[3][4] DAWs which use ARA version 2 are not automatically backwards compatible with plug-ins using version 1.^[5] The first DAWs to support ARA version 2 were Logic Pro X (version 10.4, released in January 2018)^[6] and Studio One (version 4, released in May 2018).^[7]

ARA implementation

To allow software manufacturers to support ARA, a Software Development Kit has been published by Celemony.^[8][9]

Current software products which support ARA include the following.

Digital audio workstations

DAW	Developer	ARA v1 Support	ARA v2 Support
ACID Pro Next	MAGIX	N/A	Version 1.0.3.32 or later[10]
Cakewalk by BandLab	BandLab Technologies	SONAR X3 or later[11]	Version 2019.05 or later[12]
Cubase	Steinberg	N/A	Version 10.0.30 or later[13]
Digital Performer	MOTU	N/A	Version 11.2 or later[14]
Logic Pro X	Apple Inc.	N/A	Version 10.4 or later[6]
Nuendo	Steinberg	N/A	Version 10.1 or later[13]
Pro Tools	Avid Technology, Inc.	N/A	Version 2022.9 or later[15]
REAPER	Cockos	N/A	Version 5.97 or later[16]
Samplitude Pro	Magix	Version X3 or later[17]	Version X5 or later[18]
Studio One	PreSonus	Version 2 or later[1]	Version 4 or later[19]
Waveform / Tracktion	Tracktion Software Corporation	Version 5 or later[20]	N/A

Audio editors and plug-ins

Plug-In	Developer	ARA v1 Support	ARA v2 Support
Melodyne	Celemony Software	Version 1.3 or later[2]	Version 4.2 or later[21]
VocAlign	Synchro Arts	Project version 3 / Pro version 4 or later[22]	Project version 3.6.0.5 / Pro version 4.5.0.5 or later[23]
RePitch	Synchro Arts	N/A	Version 1
Revoice Pro	Synchro Arts	N/A	Version 4 or later[24][4]
SpectraLayers	Steinberg	N/A	Version 6 or later[25]
WaveLab	Steinberg
Auto-Align Post 2	Sound Radix	N/A	Version 1
Acoustica	Acon Digital	N/A	Version 7.4 or later[26]
ASAP - Spectral Surface	IRCAM	N/A	All versions
ASAP - Pitches Brew	IRCAM	N/A	All versions
ASAP - Stretch Life	IRCAM	N/A	All versions
Vocaloid	Yamaha	N/A	Version 6 or later[27]
Synthesizer V Studio	Dreamtonics	N/A	Version 1.11.0 or later[28]
Sync VX	Waves	N/A

See also

• Celemony Software
• PreSonus
• Studio One (software)
• Audio plug-in