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Development environment for scientific research

Overflow is a "data flow oriented" development environment which lets users build complex programs by visually connecting small, reusable building blocks. It is primarily designed as a research tool, but can also be used for real-time data processing. The package includes a visual debugger. It currently includes toolboxes for signal, speech, and image processing, vector quantization, fuzzy logic, real-time audio effect processing, and neural networks.


User guide available in HTML format from http://freespeech.sourceforge.net/FreeSpeech/html/Overflow/doc.html



version 0.9.1 (beta)
released on 10 October 2007

VCS Checkout

:pserver:anonymous@cvs.freespeech. sourceforge.net:/cvsroot/freespeech




Verified by

Verified on


Verified by

Janet Casey

Verified on

24 April 2002

Leaders and contributors

Jean-Marc Valin Maintainer

Resources and communication

AudienceResource typeURI
DeveloperVCS Repository Webviewhttp://sourceforge.net/cvs/?group_id=590
Bug Tracking,Developer,SupportMailing List Info/Archivehttp://lists.sourceforge.net/mailman/listinfo/freespeech-overflow
Python (Ref)https://pypi.org/project/overflow
Ruby (Ref)https://rubygems.org/gems/overflow

Software prerequisites

Required to useglib 1.2.7 or later
Weak prerequisiteautoconf
Required to usePerl
Weak prerequisitelibtool (all three for working from the CVS code)
Required to useFFTW library
Required to usegcc 2.95.x (2.96 has problems)
Required to useGnome including libmxl
Weak prerequisiteautomake

This entry (in part or in whole) was last reviewed on 29 March 2018.


"Python (Ref)" is not in the list (General, Help, Bug Tracking, Support, Developer) of allowed values for the "Resource audience" property.

"Ruby (Ref)" is not in the list (General, Help, Bug Tracking, Support, Developer) of allowed values for the "Resource audience" property.

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