Chant Developer Workbench Releases

Released: Jan 18, 2021

Updates in 2020 (


Audio Search

  • Chant Audio Search enables applications to find the time offsets for specific words, phrases and sub-phrases in audio recordings.
  • The search terms can be a simple string or Regular Expression pattern.
  • An audio recording is transcribed first from which one or more searches may be performed. Matches are returned for the entire recording as offsets in seconds.
  • Audio Search class libraries are available for C++, Embarcadero C++Builder, Embarcadero Delphi, Java, C#, and VB .NET...

Released: Dec 23, 2020

Updates in 2020 (


  • Added support for Acapela:
    • Synthesize text to speech with a simple request.
    • Generate Acapela TTS Tags for enhancing speech synthesis.
    • Edit word pronunciations for enhancing synthesis clarity.
    • Select and adjust synthesizer and audio options and property settings dynamically.
    • Integrate with almost any application type, architecture, programming language, and development environment used for Microsoft Windows platforms.

Released: Sep 11, 2020

Updates in 2020 (7.0.1)


  • Added SpeechKit Android libraries for voice-enabling Android apps.
  • Includes samples for Android Studio, Embarcadero C++Builder, Embarcadero Delphi, and Xamarin.
  • Added support for Google android.speech (recognition) and Google android.speech.tts (synthesis) speech APIs.

Released: May 28, 2020

Updates in 2020


  • Learn by Example - See how easy it is to develop software that speaks, listens, and detect movement with example apps. Simply compile and run sample apps using your favorite IDE and programming language.
  • Direct Speech Recognition Requests - Now you can recognize speech directly bypassing vocabulary management and queue processing. StartRecognition method enables continuous speech recognition if no vocabularies are enabled and the Transcribe method directly passes requests to a...

Released: Dec 20, 2017

Updates in 2016 Build 6113


  • Unable to add child elements to Phrase and Optional Phrase elements.
  • Enabling a grammar defined from a source string fails.
  • Stopping VoiceXML document crashes CDW.

Released: May 30, 2017

Updates in 2016 Build 6112


  • Selecting document tab in CDW causes the document window to float.
  • Context menu Float command closes tabbed document window in CDW.

Released: Apr 27, 2017

Updates in 2016 Build 6111


  • Validating a VoiceXML document in the CDW runs fine. However, running the VoiceXML document causes CDW to crash.
  • The Delphi TTS sample only generates a wave file if the memo field is empty.
  • Delphi throws error E2250 on the following statement: ChantSR1.StartRecording(TempFileName, 0, CROFile, CAFDefault, CRSSynchronous).
  • Updated Delphi .pas file, updated Delphi TTS Samples, and new VS 2017 and RAD Studio 10.2 Tokyo project samples.

Released: Mar 13, 2017

Updates in 2016 Build 611


  • Now you can develop Microsoft HoloLens applications that speak and listen using SpeechKit. Simply use the SpeechKit classes to recognize and synthesize speech with the Windows.Media speech API.
  • Manage pronunciations using dictionaries for Nuance VoCon speech recognition with the latest Chant Developer Workbench 2016 IDE and class libraries.
  • Develop applications that speak with latest Nuance Vocalizer Expressive 3 voices using the Chant Developer Workbench 2016 class libraries.

Released: Dec 1, 2016

Updates in 2016


  • Voice enable Windows 10 Apps - Now you can develop Windows 10 Apps that speak and listen across Universal Windows Platform (UWP) devices. Simply use the SpeechKit classes to recognize and synthesize speech with the Windows.Media speech API.
  • Windows 10 Apps Speech Recognition Grammars - Now you can design and test Windows 10 Apps Speech Recognition Grammars(SRGS) in a full-featured IDE. Simply open a grammar tab in the Chant Developer Workbench and begin editing.
  • Windows 10 Apps Speech...

Released: Jul 22, 2015

Updates in this release

Updates in 2015

  • Kinect for Xbox One Sensor - Track movement with Kinect for Xbox One sensors. Simply install the sensor with the Kinect Adapter for Windows, install the Kinect for Windows SDK 2.0, and code with the KinesicsKit 3 class library for rendering color, depth, and body data in Windows applications.
  • Localized UI - Select from 17 language choices for the Chant Developer Workbench IDE UI. Simply select the language choice under International Settings and restart the Chant Developer...