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Developer(s)FreqTweak team
Stable release
0.7.2 / July 11, 2009; 11 years ago (2009-07-11)
Preview release
? scr-only[1] / July 4, 2010; 10 years ago (2010-07-04)
Written inC++
Operating systemLinux
TypeAudio software

FreqTweak[2][3][4][5] is an open-source[6] tool for real-time audio spectral manipulation and display. It is free software, available under the GNU General Public License. FreqTweak can (and is supposed to) be connected to other audio software using the JACK Audio Connection Kit.


FreqTweak is FFT-based, and supports up to four channels. An FFT analysis is applied to each audio channel, and every individual frequency band can have a different effect applied to it. In version 0.6.1 the following effects are available:


  1. ^ "FreqTweak project's page at Sourceforge". Retrieved 19 November 2011.
  2. ^ Werner, Niklas (2007). Entwicklung eines nativen Programms unter Unix zur synchronen Visualisierung von Audiosignalen im Spektralbereich (in German). GRIN Verlag. p. 61. ISBN 978-3-638-70202-7.
  3. ^ Berdahl, Edgar (August 25, 2005). "Acoustic Feedback Cancellation For Public Address Systems" (PDF)., technical report. p. 8.
  4. ^ Guo, Yu-Hung (June 2007). "An Embedded Middleware for Component-Based Software Development and the Development Environment" (PDF) (in Chinese). National Cheng Kung University, Taiwan, Master's thesis. pp. 73–74, 89–91. Archived from the original (PDF) on 2011-08-15. Retrieved 2009-09-14.
  5. ^ Phillips, Dave (April 2005). Where Are We Going And Why Aren't We There Yet?. 3rd International Linux Audio Conference (LAC2005). Karlsruhe, Germany: Zentrum fur Kunst und Medientechnologie. p. 148. CiteSeerX
  6. ^ "FreqTweak Open-Source Project". SourceForge.