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audiosculpt_01.jpgAudioSculpt takes a visual approach to modifying a sound file.




AudioSculpt is a software for viewing, analysis and processing of sounds. AudioSculpt offers several graphical representations of the sound signal - Waveform, spectrum and sonagram - to obtain the desired changes and help the user to select optimal control parameters. To perform the processing and analysis, AudioSculpt uses the audio processing kernels SuperVP (extended phase vocoder and audio analysis library) and Pm2 (sinusoidal model). The treatments are organized in a sequencer and can be moved and enabled / disabled individually. The interface for handling the spectrogram use the concepts of graphic design software and allows the deletion and movement of sounds in the form of time-frequency regions. Being able to separate the sounds using time-frequency characteristics provides opportunities very advanced compared to treatment in the time domain.

Consult the online documentation (in Englisch):

AudioSculpt, user manual

AudioSculpt, sound examples

Main Features


Display. Zoom from an overall view
down to sample level, synchronized sonogram (time/frequency), spectral envelope, processing sequencer.

Analysis. FFT, LPC, True Envelope, fundamental frequency, partial following, different methods of automatic segmentation, formants, and tools for listening to selected sections of the spectra with harmonic display.

Sound Processing. A processing sequencer with individual tracks makes it possible to listen to them in real-time prior to creating the final result:

  • Filtering: directly on the sonogram using a pencil or eraser or by specifying with the mouse the points forming a polygon. Manual source separation and denoising are possible.
  • Compression/expansion: allows modification of the length of a sound without changing its pitch or timbre while maintaining the quality of the transitions.
  • Transposition: using a specific editor the user can transpose a sound without changing its length and without loosing sound quality ; separate transpositions for sound and spectral envelope for timbral modifications.
  • Denoising: spectral subtraction with interpolation of sound estimations.
  • Cross Synthesis: application of spectral data from one sound to another in order to create a hybrid sound or a transition from one sound to another.
  • Partial Synthesis: creation of a new sound from partials found via an analysis.

Additional Information

AudioSculpt is based on the analysis/synthesis engines SuperVP (for Super Phase Vocoder) and Pm2 (Partial Manager 2) that bundle together the algorithms necessary for AudioSculpt. The user can control these kernels either graphically using the dialogs provided by AudioSculpt or on a command line interface that is integrated in AudioSculpt.

Legal Information

Audiosculpt is a registered trademark of IRCAM. All other trademarks belong to their owners.

Further Information: IRCAM - Coordination of Scientific and Musical Research 1, place Igor-Stravinsky 75004 Paris France | mail: admin-forum(at)ircam.fr
Access: AudioSculpt is part of the Studio Forum software suite, please see the AudioSculpt Forum Page.


Principal Research Theme: Signal Analysis, Sound Synthesis and Treatment, Signal Transformation
Associated Software: AudioSculpt, Pm2, SuperVP
Associated People: Alain Lithaud, Axel Roebel, Charles Picasso, Xavier Rodet