quick links

pro audio plugins
pitch, harmony, loudness
online audio processing

élastique SDK
time and pitch scaling

tempo and beat tracking

key detection

parametric convolution


music/speech classification

effects bundle

parametric reverberation

loudness & level metering

élastique Tune
pitch correction






élastique v3 about to be released!

zplane announces the upcoming major update of élastique, zplane´s time-stretching and pitch-shifting engine.
élastique V3 will feature a highly improved transient preservation even at high stretching ratios while maintaining it's known real-time capabilities. It also introduces the new infiniStretch feature allowing stretch ratios up to infinity which will open up new possibilities for sound design and creative DJ-ing.

Version 3 will be available as élastique efficient and élastiquePro.

DJUCED app powered by zplane

DJUCED app by Guillemot Corporation is powered by our aufTAKT technology.

Halion 5 with élastique

Steinberg's new Halion 5 includes élastique Efficient for time stretching and pitch shifting.
Find out more about Halion at the manufacturer's site

CrossDJ features élastique keylock

MixVibes' CrossDJ for iPad comes with the zplane élastique engine.
Find out more about CrossDJ and its keylock at the manufacturer's site.

zplane present: online audio processing service

Berlin, October 25, 2012: The free public beta of the new online audio processing service was launched earlier today. offers an API for professional grade audio effects and high end music processing engines to web and app developers. For a long time, many of these technologies were only accessible through proprietary C++- interfaces as opposed to the easy-to-use HTTP interface provides.

The featured technologies include effects such as reverberation, time stretching and pitch shifting (changing the tempo and pitch independently) and analysis engines for the detection of tempo, loudness, and musical key. More technologies will be added continuously. They enable developers to build services for automatic audio database tagging, for creating mash-ups of songs with different tempo and key, and for applying state-of-the-art effects to their recordings.

"The increasing diversity of programming languages and platforms used for music processing results in increasing difficulties for developers to integrate our highly optimized C++ software development kits into their apps. Moving these technologies into the cloud and offering an easy, platform-independent interface speeds up the development cycle and allows our technologies to be used on any platform in any programming language", says founder Alexander Lerch.

For more info, please visit

Book on Audio Content Analysis

New text book on signal processing algorithms in Music Information Retrieval (MIR).

An Introduction to Audio Content Analysis zplane co-owner Alexander Lerch explains machine listening algorithms in his recently published book. Detailed info is available on the book's website.

[aufTAKT] tempo tracking now also on Blackberry

The Pacemaker app for the PlayBook uses zplane's [aufTAKT] SDK.
Learn more at the Pacemaker product site.

zplane SDKs in vjay

algoriddim's recently launched app vjay for iPad integrates [aufTAKT] for tempo and beat tracking, fx::pack for audio effects, and élastique for time and pitch scaling.
Learn more on their product page.

Scratch DJ Academy with

Stanton's Scratch DJ Academy MIX! software now includes élastique, [aufTAKT], and [tONaRT] for BPM and key matching.
Check out their website for more info.

4Tune Karaoke Scoring

Signal processing SDK for real-time pitch tracking and karaoke rating.

zplane announce the release of a new signal analysis SDK targeted at embedded and web developers: the 4Tune karaoke scoring SDK.

4Tune automatically detects the pitch of a singer  with a low latency real-time pitch tracking algorithm and rates the pitch deviation from a musical score.

4Tune is highly optimized for embedded devices such as the iPhone. The pitch tracking technology is based on the same core used by the professional grade pitch correction SDK élastique Tune.

élastique: now on Android

zplane's élastique efficient now available for the Android operating system.
zplane's élastique efficient engine, already used by millions of musicians and producers on MacOS, Windows, Linux, and iOS, is now available for Android platforms as well. This brings the well-known studio quality time and pitch scaling to (powerful) Android devices. Watch a demonstration of real-time time-stretching on a phone here:


The new DJ software DJUCED integrates élastique efficient, [tONaRT] and [aufTAKT] for the perfect mix.
Check out

djay for Mac now with 5 different zplane SDKs

The new version of djay 4 for Mac uses multiple zplane SDKs such as [aufTAKT] for tempo detection, S.R.C. for sample rate conversion, fx::pack for numerous audio effects, élastique efficient for time stretching and pitch shifting, and our Metering for loudness measurement.
Learn more at the djay product site.

Music OS comes with élastique Pro

The brand new Music OS 3.0 features élastique Pro as time stretching engine.
Learn more at the Open Labs website.

Virtual DJ with élastique

Atomix included élastique efficient in Virtual DJ.
Find out more about Virtual DJ at their product site.

élastique Tune: Pitch Correction SDK

zplane present élastique Tune, a licensable software technology for correcting pitch and timing of single-voiced audio signals.
élastique Tune is a technology for manipulating the pitch and the timing of monophonic audio signals. It provides access to high level musical parameters and allows the developer to easily modify both melody and performance characteristics.
élastique Tune is based on the highly acclaimed élastique SOLOIST engine which powers products such as Steinberg's VariAudio and FL Studio's Newtone.

The key features of élastique Tune are:
  • extensive possibilities of manipulating pitch, pitch contour and timing on a local and global level
  • easy to use Application Programmer's Interface (API)
  • highest audio quality with the well-known élastique time stretching and pitch shifting engine

Visit us on Facebook

Visit our new facebook page and tell us what you think!
Well, yeah, we know we are a bit too late... No reason not to like us 8-)

élastique Pro now in Sequel 3

Steinberg uses élastique Pro as stretch and pitch engine of Sequal V3.
Learn more on Steinberg's product site.

djay for iPad now with élastique key lock

djay 1.2 now includes élastique efficient on the iPad 2.
Learn more at thedjay product site.

Metering SDK V2

EBU R128 compliant loudness measurement
The new version 2 of the Metering SDK offers loudness measurement compliant to EBU recommendation R128. This new long term measure of loudness estimates the perceptual loudness of tracks. This allows simple loudness correction in broadcast streams or playlists with mixed content to ensure a constant perceptual playback level.

Set up a Meeting at Musikmesse 2011

No booth but ...
If you are a manufacturer, distributor or dealer we would be more than happy to meet you in Frankfurt. Please don't hesitate to contact us at to make an appointment. We look forward to meeting you there!

Cubase 6 with élastique Pro

Steinberg's new Cubase 6 now features élastique Pro and élastique efficient as default time stretching engines.
Learn more on Steinberg's product site.

Elastik V2

New version 2 of ueberschall's Elastik loop player has been developed by zplane.
zplane teamed up with ueberschall for the development of Elastik V2, a next generation loop and sample player. Elastik includes zplane's élastique Pro and fx::pack SDKs.
Check out the video below or visit directly to learn more.

élastique Pro in Band-in-a-Box

The new Band-in-a-Box 2011 sounds better than ever with zplane's élastique Pro time stretching engine!
Learn more at the PG Music site.

djaying the iPad

algoriddim's djay now released for the iPad utilizing three zplane SDKs: [aufTAKT] for tempo and beat tracking, S.R.C. for sample rate conversion and the fx::pack for filters and effects.
Learn more at the djay product site.

Newtone Pitch Correction

New FLStudio Pitch Correction Tool developed by zplane.
Check out Newtone for FLStudio, a pitch correction tool developed by zplane in close cooperation with our friends at Image-Line.
To learn more, see the video tutorial below or look at FLStudio 9.7 directly

aufTAKT V3 for iPhone

zplane announces the availability of its [aufTAKT] V3 algorithm for the iPhone.
zplane's tempo and beat tracking algorithm [aufTAKT] V3 is now available for all Apple products (iPhone, iPad, iPod touch) supporting iOS4.

élastique efficient for iPhone

zplane is happy to announce the availability of its elastique efficient algorithm on the iPhone.
Watch a demonstration of real-time time-stretching on iPhone here:

ProDJ and ProVJ in perfect sync with [aufTAKT]

ClubDJ's ProDJ and ProVJ in their version 5 now include [aufTAKT] beat and tempo tracking. 
Visit their site to learn more.

[aufTAKT] v3: now in djay

The new version 3.1 of algoriddim's djay includes our new [aufTAKT] v3 tempo and beat-tracking technology.
Learn more at the djay product site.

[aufTAKT] v3 released!

[aufTAKT] v3 now available!
zplane releases [aufTAKT] V3, a technology for automatic tempo and beat analysis of music files. [aufTAKT] is able to identify the tempo and musical beat locations in an audio file and can be found as an integral part of numerous applications in the DJ and music production field.

The [aufTAKT] V3 features:
  • improved tempo detection stability
  • automatic downbeat detection
  • automatic detection of time signature
  • additional "forced straight tempo"- mode for electronic music
  • alternative use of the [aufTAKT] V2 engine for backward compatibility

[aufTAKT] can be licensed as Software Developers Kit (SDK). For further information please visit the [aufTAKT] page or contact us via email.

[aufTAKT] v3 to be released!

zplane announce the impending release of [aufTAKT] v3 tempo tracking technology.
zplane [aufTAKT], a technology for automatic tempo and beat analysis of music files, will be updated to version 3 in early 2010. [aufTAKT] is able to identify the tempo and musical beat locations in an audio file and can be found as an integral part of numerous applications in the DJ and music production field.

The new version will offer:
  • improved tempo detection stability
  • automatic downbeat detection
  • automatic detection of time signature
  • additional "forced straight tempo"- mode for electronic music

[aufTAKT] can be licensed as Software Developers Kit (SDK). For further information please visit the [aufTAKT] page or contact us via email.

Independence: now with élastique SOLOIST

The Independence Pro Software Suite by yellow tools now features élastique SOLOIST as stretching and pitching engine.
Learn more at the yellow tools website.

élastique in Sony Vegas Pro

The latest release of Sony Vegas Pro v9.0c includes now élastique Pro V2.
Learn more at the Sony Creative Software website.

JamVOX 1.5 with élastique

New version 1.5 of VOX's guitar software JamVOX now includes élastique efficient V2!
Learn more at!

élastique efficient V1.3 update for Snow Leopard

An update for élastique efficient V1.3 for MAC is available.
This update fixes a bug causing a crash on OSX 10.6 (Snow Leopard) systems. Versions >1.3 are not affected.
Customers still using version 1.3 of élastique efficient please send an email in order to receive the update.

élastique Pro in Sony Sound Forge Pro 10

The new Sound Forge Pro 10 by Sony Creative Software comes with élastique Pro V2!
Learn more at the Sony Creative Software website.

best service ENGINE with élastique SOLOIST

best service's new sample player ENGINE comes with élastique SOLOIST V2 as time stretching and pitch shifting engine.
Learn more at best service's website.

ELASTIQUE pitch plugin

New RTAS plugin powered by zplane's élastique Pro V2.1 pitch shifting engine.
zplane announces a new commercial product, the ELASTIQUE plugin for real time pitch shifting.
With a plugin interface designed to allow quick and easy interaction with all parameters, elastique is designed to be the optimal plugin for pitch shifting in film and audio conversion applications, for sound design and for adjusting pitch in recording and rehearsal sessions.
The key features of ELASTIQUE are:
  • multi channel: support for synchronous pitching of up to 8 audio channels
  • real time: no offline pre-analysis required
  • program independence: high pitch shifting quality for all types of audio (speech, monophonic, classical music, mixes, etc.)
  • phase coherence: absolute phase stability between all channels
  • MIDI pitch control
  • formant shifting: moving of formants independent from pitch
  • factory presets: typical film pull-up/pull-down settings
ELASTIQUE pitch plugin is available for RTAS (Mac OS X, Windows) at an MSRP of $499/€449.

More information online at

New AtAAK! SDK available for licensing

New licensable technology available: AtAAK! Audio-to-Audio Alignment Kit.

AtAAK! provides the mechanism for the automatic synchronization of two similar audio files. By analyzing the similarity over time between the files AtAAK! automatically applies time stretching to one file to synchronize the audio files. Thus, timing differences between different tracks of recordings can be automatically or semi-automatically be removed.

This SDK is a fusion of our research results on new music analysis systems with our work on artifact-free time-stretching solutions.

Typical applications are the adjustment of timing between two vocal lines, the automatic tempo correction of different recording takes when editing classical music and the automatic synchronization of overdubbed and (distorted) original speech.

Key features of AtAAK! are:

  • Simultaneous measurement in four domains: Pitch, Timbre, Loudness and Onset Times, providing optimal customization for each file the process is applied to
  • industry standard élastique Pro time stretching engine integrated into the SDK
  • User-definable reference synchronization points
The SDK is immediately available from us. Please contact us directly.

zplane @ Musikmesse 2009

Proudly presenting prodigious plugin products!
If you are interested what's new at zplane, visit us at our demo station at the best service booth (Hall 5.1 A71)! We will certainly have something new to show...

If you are interested in licensing our technology, please contact us via email so we can set up a personal appointment with you.

Looking forward to see you there!

Beta Testers Needed!

Beta phase for a new real time plugin about to start.
We are looking for beta testers for an upcoming plugin product of ours. It will be a simple, real time and straight forward RTAS plugin.

We plan to enter the beta phase during the next two weeks, so if you are interested, we would appreciate it if you could contact us at info [at]

Before you apply to beta testing this plugin, please make sure that you have Pro Tools as a test host installed as this plugin will be RTAS only. In your email, please include a short description what qualifies you as a beta tester, your user name in our forum (registration free) as well as your iLok user name.

Disco XT v5 with

The new version of Disco XT features a lot of zplane technology: élastique efficient, [aufTAKT] and parts of the fx::pack SDK.
Learn more at the Disco XT website.

vielklang 1.5 available

zplane release Version 1.5 of vielklang automatic harmony plugin.

zplane.development release version 1.5 of vielklang. vielklang is an audio harmonization instrument for easy generation of vocal or instrumental harmonies with up to four voices. The utilization of voice leading and harmony progression models allows vielklang to create harmony parts in a more musical way than traditional harmony processors and makes it a versatile and creative tool for musicians, songwriters and producers.

The new version adds the following main features:

  • live MIDI input: play chords or voicings directly with the keyboard to control vielklangs harmonization
  • new harmonization styles: 3-voice intelligent, Block Chords, Fauxbourdon, Organum
  • new export options: Audio/MIDI File Export for individual voices, MIDI export of harmony tracks
  • improved input melody analysis: new note detection algorithm improves accuracy and robustness
  • Ready for Pro Tools 8

Read more at the vielklang page.

ACID with élastique Pro

Sony's ACID Pro 7 will feature élastique Pro v2 as time-stretching engine!
Learn more at Sony's website.

élastique V2.1

Version 2.1 of élastique Pro and efficient is available now!
The new version offers many fixes and performance improvements - the detailed list of changes is:
  • performance improvements:
    • élastique Pro: general performance optimizations (up to 10% gain in certain applications)
    • élastique efficient: performance optimizations for pitching modes (up to 25% gain)
    • improved workload usage of Reset () API method
  • new features:
    • new synchronization mode for real-time pitch shifting applications
  • fixes:
    • several minor and major fixes in Reset () API method
    • élastique Pro: frame calculation in FlushBuffer () API method
    • élastique efficient: frame calculation in ProcessData () API method

New Format Conversion SDK: <dns>

<dns> extends our technology line with licensable high quality audio format conversion functionality: word length reduction and sample rate conversion.
Who doesn't want to present the highest audio quality to his customers even if the final product has to be a CD with 16 Bit at 44.1 kHz? With carefully tuned Dithering, Noise-Shaping and Sample Rate Conversion algorithms, the <dns> SDK now offers the optimal solution to this dilemma!

z.matrix is back

z.matrix surround panning plugin is available again for purchase!
Years ago, we had to discontinue our Scope-Plugin z.matrix. Now we are glad to announce that our friends at Sonic Core have taken over: z.matrix surround panning plugin is now developed, supported and distributed by Sonic Core. Learn more at their product site!

z.matrix surround panning plugin can control the movement of 16 sound sources in a field of up to 16 loudspeakers. Each source can be controlled individually or within a group via mouse or MIDI. Both live sources and recorded sounds can be processed with only 1 sample latency!

élastique: going to the max

Simon Adcock created the MaxMSP external elastic~ that finally makes high quality stretching and shifting with élastique efficient V2 available to the MaxMSP community!
Learn more at their product site!

[aufTAKT] goes VJ

The tempo and beat tracking engine [aufTAKT] will be part of the upcoming version of resolume (Avenue 3), an application for live video performances.
Learn more at the resolume site.

Bison with élastique Pro

The upcoming version of the Bison DJ software by EKS now offers élastique Pro V2 time-stretching.
Learn more at the EKS site.

élastique V2 in Reaper

Cockos Reaper 2.2 the first software to include the brand new élastique Pro V2.
Learn more at the Cockos site.

élastique Pro V2.0.2

New version of élastique Pro available: maintenance release V2.0.2.
The SDK is immediately available from us as an upgrade or evaluation copy. Please contact us directly. The demo has also been updated and fixes some SSE3 issues.

élastique Pro/efficient V2.0.1

New version of élastique Pro and efficient available: maintenance release V2.0.1.
The SDK is immediately available from us as an upgrade or evaluation copy. Please contact us directly.

MixVibes CROSS with élastique

CROSS, MixVibes' new cross platform DJ software comes with zplane élastique for time stretching and pitch shifting.
Learn more at the MixVibes site.

élastique V2

élastique Pro V2 and élastique efficient V2 available now!
zplane unveil version 2 of the time stretching and pitch shifting engines élastique Pro and élastique efficient. élastique stretching can be found as an integral part of numerous digital audio workstations and DJ applications.

The new version offers many audio quality enhancements, including better transient preservation, increased bass resolution and improved high tonal frequency processing. Many optimizations and new interface functionality improve the performance, integration and handling of élastique significantly.
The win32 demo and the SDK documentation will be available online soon. Meanwhile, please find some more detailed information on the élastique page.

about élastique

The élastique time stretching engines are used in many applications of the music, film, broadcast, and entertainment industry. Transparent audio quality combined with real-time processing capabilities have made élastique the de facto standard for time scaling in real-time audio applications.

Typical applications are:
  • master tempo and key lock for DJ applications
  • beat and pitch modification for audio applications
  • slowdown of recordings for practice and transcription
  • time and pitch adjustment for film post-production

Handbuch der Audio­technik

The new german reference on audio technology.
Handbuch der AudiotechnikThe "Handbuch der Audiotechnik", edited by Stefan Weinzierl, is a comprehensive reference book for audio technology, written by scientists and developers including zplane staff member Alexander Lerch.

M-Audio Torq 1.5 features zplane tech­nology

Torq 1.5 DJ software now integrates zplane élastique for time stretching and pitch shifting.
Learn more at the M-Audio Torq page.

élastique public beta

Preliminary release of élastique Pro/efficient V2.
zplane announces the impending release of the second generation of our élastique time stretching and pitch shifting family. [The preliminary demo is not available anymore. For more info and a current demo application, please visit the élastique page].
Feel free to discuss the new élastique in our forum.

DJ-1800 with [aufTAKT] tempo detection

Mac-based DJ software DJ-1800 now utilizes [aufTAKT] tempo detection.
Learn more at their website

launch of new website

zplane.web with new look and feel.
We have completely overhauled our website: new design, new content, new structure. Take a look at the new site and tell us what you think!

Reaper 2 comes with élastique

Cockos Reaper 2 supports full élastique Pro time stretching and pitch shifting functionality and quality!
Please learn more at the Cockos website.

vielklang 1.1 released

The new version 1.1 of vielklang as the easiest harmonization tool for musicians is now available.

vielklang harmony plugin

zplane.development released version 1.1 of vielklang, the audio harmonization instrument for easy generation of vocal or instrumental harmonies with up to four voices. The utilization of voice leading and harmony progression models allows vielklang to create harmony parts in a more musical way than traditional harmony processors and makes it a versatile and creative tool for musicians, songwriters and producers.

Version 1.1 now offers support for the RTAS interface and includes the following new features:

  • two-voice harmonization mode, generating only a second voice in a typical backing vocal style
  • availability of 7th chords
  • timing humanization control
  • single note splitting and muting
  • drag’n’drop and file export of audio and midi data

Find the new version directly on the vielklang download page.

vielklang - The world needs more harmony!

vielklang audio harmonization instrument for Mac/PC unveiled!

vielklang harmony plugin

Today zplane.development announced the availability of vielklang, a plug-in instrument for instant audio harmonization. vielklang generates up to four voices from a single-voiced audio input. The progression of each individual voice is controlled by sophisticated harmony progression and voice leading models, resulting in musically meaningful harmonization without any configuration efforts.
With vielklang musicians can easily generate and prototype natural-sounding background vocals and brass sections, modify melodies and single-voiced loops in terms of pitch and scale, and experiment with various harmonizations or chords triggered by different MIDI-inputs. It allows the user to synthesize up to four voices, edit harmonies and single pitches, and convert audio to MIDI.
The four voices don't simply move in parallel, their individual progression is controlled by a complete set of voice leading rules and sophisticated harmony progression models. This musical intelligence and knowledge lets the user focus entirely on musical issues, rather than technical or theoretical ones. vielklang helps to achieve musically meaningful results without having to bother about root note, scale, tuning frequency, harmony progression and voice leading.
While vielklang provides instant and meaningful results, experienced users also have the option of changing harmonization parameters like the range (ambitus) or distribution of the voices, modifying root note and scale, editing single harmonies and changing individual pitches in each of the voices.

vielklang’s main features:

  • instant 4-voice harmonization of any single-voiced audio input
  • integrated voice leading and harmony progression models, resulting in entirely natural-sounding automatic harmonization
  • one-click modification of key scales and harmonies
  • high quality, formant preserving, flexible pitch shifting
  • audio-to-MIDI functionality for all voices
  • customizable user interface

vielklang is available for AU and VST for OSX and Windows at for an introductory offer of Euro 159,- / USD 199,- until May 31st, 2007. After that vielklang retails for Euro 179,-/ USD 249,-

[tONaRT] automatic key detection V2

zplane releases new version of [tONaRT] key detection SDK.
Version 2 of [tONaRT] automatic key detection focusses on internal optimizations. It contains a complete rewrite of the polyphonic pitch estimation [tONaRT] utilizes for the key detection. Furthermore, due to the weighted combination of several different key detection approaches, the overall reliability has been significantly improved.
[tONaRT] key detection can be licensed as software developers kit (SDK) for various operating systems and platforms. 

[museg] music/speech segmentation

zplane releases new music/speech classification SDK.
The previously released music/speech segmentation SDK is now re-released, and includes an additional training SDK. This allows the user to customize the classification and adapt the algorithm towards his specific use cases.

z.reverb v2.0

zplane releases new version of z.reverb.
Version 2 of the reverberation SDK z.reverb provides a new high quality mode that features a significant quality improvement to previous versions. Naturally, the previous quality modes are still available.

élastique Pro 1.5 features polyphonic formant preserving pitch shifting

The new version 1.5 of the élastique Pro SDK offers formant preserving pitch shifting also for polyphonic input files.
The latest release augments the high quality time stretching and pitch shifting algorithm élastique Pro (V1.5) with a polyphonic formant preserving pitch shifting option. This way polyphonic instruments or choirs keep their natural character when being pitch shifted.

IntelMac compatibility for all products and SDKs

zplane announces full IntelMac compatibility for all products and SDKs.
As one of the first companies, zplane reacted to the official release of the new IntelMacs, and makes all zplane products and SDKs are available for this new platform.