gnuspeech  0.9
About: Gnuspeech is an extensible, text-to-speech and language creation package, based on real-time, articulatory, speech-synthesis-by-rules.
  Fossies Dox: gnuspeech-0.9.tar.gz  ("inofficial" and yet experimental doxygen-generated source code documentation)  

gnuspeech Documentation

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Use GnuSpeech.xcworkspace to build the applications and frameworks. It currently builds with Xcode 6.4 on OS X 10.10, and deploys to 10.9 or later.

Documentation for Monet and TRAcT are available in the Documenation directory.



The main interactive application that synthesizes speech and allows for experimentation with many speech parameters and settings. The actual synthesis occurs in the framework GnuSpeech.framework. The articulatory tube model that is used by GnuSpeech.framework is located in Tube.framework.


An interactive application that allows a user (usually a language developer or someone interested in the behaviour of the tube model) to interact directly with the tube model, listen to the output under different static conditions, and analyse the output.


An application that allows users to create and maintain their own dictionaries. This application is not yet fully functional.


A simple text-to-speech client application that accesses the functionality of the text-to-speech server (GnuTTSServer) programmatically.



The main framework for all reusable components in the GnuSpeech project. This is bundled within the applications that use it.


The underlying articulatory tube resonance model for speech synthesis. This is bundled within the applications that use it.



This is the GnuSpeech text-to-speech server. The server is implemented using the OS X Distributed Objects architecture. To install the server, build the GnuTTSServer project, locate the GnuTTSServer executable, diphones.xml, org.gnu.GnuSpeech.GnuTTSServer.plist file, and then issue the following commands to install the server and configuration files:

$ sudo mkdir -p /Library/GnuSpeech
$ sudo cp GnuTTSServer /Library/GnuSpeech/
$ sudo cp diphones.xml /Library/GnuSpeech/
$ sudo cp org.gnu.GnuSpeech.GnuTTSServer.plist /Library/LaunchDaemons/

Now restart your computer.

Alternatively, instead of restarting your computer, you can unload, load, and restart the server by issuing these commands from the terminal:

$ sudo launchctl unload /Library/LaunchDaemons/org.gnu.GnuSpeech.GnuTTSServer.plist
$ sudo launchctl load /Library/LaunchDaemons/org.gnu.GnuSpeech.GnuTTSServer.plist
$ sudo launchctl start org.gnu.GnuSpeech.GnuTTSServer

Note: All logging for the GnuTTSServer appears in the logfile /Library/Logs/GnuSpeechDaemon.log and is accessible from the Console.



A GnuSpeech text-to-speech OS X service that appears in the standard OS X service menu under the menu title "GnuSpeech". Build the project, locate the GnuSpeechService.service bundle, and issue the following commands from the terminal:

$ mkdir -p ~/Library/Services
$ cp -rf GnuSpeechService.service ~/Library/Services
$ chmod -R go-w ~/Library/Services/GnuSpeechService.service

Alternatively, if you want to install the service for all users on the system and not just for your own user account, type the following instead:

$ sudo cp -rf GnuSpeechServices.service /Library/Services
$ sudo chmod -R go-w /Library/Services/GnuSpeechService.service

Now log out and log back in so that OS X services recognizes the newly installed service and places a menu item in the Services menu.

Note: If you install the GnuTTSServer and have chosen not to reboot your system and instead have issued the terminal commands to start the server, make sure you kill the GnuSpeechService.service process using the /Applications/Utilities/Activity application (or similar). When you invoke the GnuSpeech service for the first time from the Services menu it will be automatically launched.


This folder contains the OS X Package Maker (.pmdoc) and/or WhiteBox IceBerg package maker (.packproj) documents that are used to create the package installer which is placed within a disk image file (.dmg) for distribution.


Legacy folders and documents that are no longer pertinent in the latest version of the OS X GnuSpeech project but remain for reference purposes only.


A cross platform version of the synthesizer is also available in a separate project.


Contact David Hill (hilld-at-ucalgary-dot-ca) if you have questions.

David Hill's web site has Gnuspeech-specific papers:

The developers disclaim any warranty of merchantability or fitness for a particular purpose in connection with the User's acquisition and use of units of any software. Acqisition or use of any of the software or documentation indicates acceptance by the User of this condition.