A DSP library for telephony
  • Overview
  • Builds
  • Updates
  • Bugs
  • Contents
  • Changelog
  • Sources


SpanDSP is a library of DSP functions for telephony, in the 8000 sample per second world of E1s, T1s, and higher order PCM channels. It contains low level functions, such as basic filters. It also contains higher level functions, such as cadenced supervisory tone detection, and a complete software FAX machine. The software has been designed to avoid intellectual property issues, using mature techniques where all relevant patents have expired. See the file DueDiligence for important information about these intellectual property issues.

Active Releases Overview

Release Latest Released Version Version in Testing
{{html release}} 
{{html stable_version}} {{html testing_version}}

Upstream Summary

Project Homepage



sharkcz's spandsp-0.0.6-0.13.pre21.fc22 tagged into SHADOWBUILD-f22-build by sharkcz (s390)

Details 2 days ago - 2015-07-05 05:57:57


sharkcz's spandsp-0.0.6-0.12.pre21.fc21 tagged into SHADOWBUILD-f22-build by sharkcz (s390)

Details 4 days ago - 2015-07-04 01:51:10


Koji build spandsp-0.0.6-0.14.pre21.fc23.x86_64.rpm signed with sigkey '34ec9cba'

Details 12 days ago - 2015-06-25 13:24:57


sharkcz's spandsp-0.0.6-0.14.pre21.fc23 tagged into f23 by sharkcz (s390)

Details 12 days ago - 2015-06-25 12:00:26

sharkcz's spandsp-0.0.6-0.14.pre21.fc23 completed (s390)

Details 12 days ago - 2015-06-25 11:59:17

Found a bug? File a ticket. Note: There's some caching going on here. If you expect something and don't see it, check back in 5 minutes.

This Web Site is licensed under the GNU Affero General Public License. You may get sources for the current running code from these repositories: