Mathieu Lagrange

Mathieu Lagrange

Contact

Tel: ++33-1-4478 4871

Research Interests

Computational Auditory Scene Analysis (CASA),
Music Information Retrieval (MIR),
Sinusoidal Modeling.

Recent Seminars

Oct. 12: CASA Workshop @ ISMIR (Porto)
Sept. 11: CASA Workshop @ DAFx Ircam
Oct. 09: Introduction seminary at Ircam (pdf slides)

Recent Publications

[INLINE]M. Lagrange[year]-1[notitle]

Complete list of Publications

Master and Phd

Subjects
Students

Short Biography

2009----- : Cr2 CNRS Researcher at Ircam
2008-2009 : Post-Doctoral Fellow within the "Groupe Audio, Acoustique et Ondes (AAO)" at Telecom Paristech.
2007-2008 : Post-Doctoral Fellow within the Music Technology Area of McGill University, Montreal, Canada. In charge of the audio/haptics interaction within the Enactive Project.
2006-2007 : Post-Doctoral Fellow and Sessional Instructor whithin the Mistic Team, Computer Science Department, University of Victoria, Canada.
2004-2006 : Non Tenure Track Assistant Professor (ATER) with the Multimedia Team of the LaBRI (Laboratoire Bordelais de Recherche en Informatique), University of Bordeaux, France.
2001-2004 : Phd thesis with the Mutimedia Coding and Indexing Team (TECH/IRIS) of FTR&D (France Telecom Research and Development), Rennes, France, on the "Sinusoidal Modeling of Polyphonic Sounds". These doctoral studies were co-directed by Sylvain Marchand and Myriam Desainte-Catherine from the LaBRI and Jean-Bernard Rault from FTR&D.
2001 : Master Thesis (DEA) whithin the Multimedia Team of the LaBRI, on the "Real-Time Additive Synthesis of Sound by Taking Advantage of Psychoacoustics". These studies were co-directed by Sylvain Marchand and Robert Strandh.

Activity Demonstrations

ORCHIVE: Digitizing and Analyzing Orca Vocalization
This work aim at creating a large digital archive of killer whale or orca vocalizations. The goal of the project is to digitize approximately 20000 hours of existing analog recordings of these vocalizations in order to facilitate access to researchers internationally. We are also developing tools to assist content-based access and retrieval over this large digital audio archive
Tracking Partials of Polyphonic Sounds
This study addresses the problem of tracking partials, i.e. determining the evolution over time of the parameters of a given number of sinusoids with respect to the analyzed audio stream
Long Interpolation of Audio Signals
In this study, the autoregressive (AR) modeling of the amplitude and frequency parameters of sinusoidal components allows us to interpolate realistically missing audio data, especially in the case of musical modulations such as vibrato or tremolo.
Estimation of the Instantaneous Frequency Using Phase-Based Methods
The robust estimation of the frequency of some sinusoidal components is a major prerequisite for many applications, such as in sinusoidal sound modeling, where the estimation has to be done with a low complexity, on short-term spectra.
Evaluation of the Technical Level of Saxophone Performers
We study a new method to evaluate the technical level of a musical performer, by considering only the evolutions of the spectral parameters during one tone.
Singing Voice Separation using the Normalized Cuts
The proposed method is inspired by ideas from Computational Auditory Scene Analysis. We formulate singing voice tracking and formation as a graph partitioning problem and solve it using the normalized cut which is a global criterion for segmenting graphs that has been used in Computer Vision.
Tridimensional Rendering of Tree-Like Vegetal Structures
In this study, we propose an original method for building Tree-Like Vegetal Structures using a generalization of the acretion method used for building sponge-like structures.
Rolling Sound demonstration - 22/03/2011
Analysis / Synthesis of Sounds Generated by Sustained Contact between Rigid Objects

Position: CNRS Researcher
Associated People: Mathieu Lagrange

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