Address Axel Röbel IRCAM 1, place Igor-Stravinsky 75004 Paris, France phone: +33 1 4478 4845 fax: +33 1 4478 1540 Contact

Axel Röbel is researcher and developer working on audio signal analysis, modeling, and transformation using especially frequency domain signal representations.

Research:

• high quality signal transformation based on the phase vocoder representation
• additive signal models using advanced algorithms for the analysis and representation of non-stationary signals and the development of Pm2, IRCAMs software for sinusoidal analysis/synthesis.
• structured signal models and perceptually pertinant signal descriptors (fundamental frequency, spectral envelope, ...)
• signal decomposition
• polyphonic f0 estimation

Development:

• SuperVP: an extended phase vocoder software allowing high quality transformations of music and speech signals, implementing new techniques for spectral envelope estimation and transformation. SuperVP is a cross platform library that is used in from of a command line application (SuperVP) that is used in AudioSculpt and OpenMusic as well as in form of a real time signal transformation modules which is used in Max/MSP and SuperVP-TRaX.
• VoiceForger: real time voice transformation library based on SuperVP.
• Pm2 library and application for analysis/synthesis using advanced sinusoidal signal models
• MatMTL a matlab compatible c++ template library
• Mat2MTL a matlab to c++ compiler based on MatMTL
• LibFFT a support library for cross platform vectorized FFT calculation

More Information For more information please visit my personal site