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    The fundamental principle of IRCAM is to encourage productive interaction among scientific research, technological developments, and contemporary music production. Since its establishment in 1977, this initiative has provided the foundation for the institute’s activities. One of the major issues is the importance of contributing to the renewal of musical expression through science and technology. Conversely, sp…

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  • Research

    The fundamental principle of IRCAM is to encourage productive interaction among scientific research, technological developments, and contemporary music production. Since its establishment in 1977, this initiative has provided the foundation for the institute’s activities. One of the major issues is the importance of contributing to the renewal of musical expression through science and technology. Conversely, sp…

    • Research Topics
    • The STMS Lab
    • Research Teams
    • Sound Systems and Signals: Audio/Acoustics, InstruMents
    • Acoustic and Cognitive Spaces
    • Perception and Sound Design
    • Sound Analysis-Synthesis
    • Sound Music Movement Interaction
    • Musical Representations
    • Analysis of Musical Practices
    • Projects
    • Sound Workshop
    • The Musical Body
    • Creative Dynamics
    • Musique/Sciences Collection
  • Creation

    IRCAM is an internationally recognized research center dedicated to creating new technologies for music. The institute offers a unique experimental environment where composers strive to enlarge their musical experience through the concepts expressed in new technologies.

    • Composers & Artists in Studio
    • In Ex Machina
    • Jazz Ex Machina
    • Improvise cum machina 1/2
    • Improvise cum machina 2/2
    • Like Sound, Like Flesh
    • Silent Talks
    • Music-Fictions
    • Tablado
    • Musical creation around Outer Space
    • Campo Abierto
    • Musical creation around Dream Work
    • Biotope
    • EROR
    • IDEA
    • Artistic Research Residency
    • Artistic Residencies: The Blog
    • Rendez Vous 20.21
    • Season 2021.22
    • Seasons from 1996 to present
    • ManiFeste-2022 Website
    • Replay: ManiFeste-2022 Concerts
    • ManiFeste festival from 2012 to 2022
    • L’Étincelle, IRCAM’s journal of creation
  • Transmission

    In parallel to its fundamental missions of research and creation, IRCAM is committed to sharing its knowledge and know-how, its technologies with the general public. Cutting-edge research and diffusion of innovations, an international reference for education and the democratization of artistic practices are the driving forces behind the institute’s educational activities.

    • 2022.23 Training Courses
    • Max, Max for Live
    • OpenMusic
    • Modalys
    • TS2 and Partiels
    • Sound spatialization
    • From PureData to audio plugins
    • Sensors, Interfaces, and Interactive Machine Learning
    • Other training programs
    • Practical Information
    • Advanced Programs
    • Cursus Program on Composition and Computer Music
    • Supersonic Chair
    • Master ATIAM
    • Sound Design Master's Program
    • Music Doctorate
    • AIMove Master
    • School Programs
    • Studios of Creation
    • Mixed-Music
    • Artistic and Cultural Education
    • Career Discovery Visit
    • Images of a Work Collection
    • ManiFeste-2022, the Academy
  • Innovations

    At the center of societal and economic concerns combining culture and information technologies, the current research at IRCAM is seen by the international research community as a reference for interdisciplinary projects on the sciences and technologies for sound and music, constantly exposed to society’s new needs and uses.

    • The IRCAM Forum
    • Subscribe to the Forum
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Effective Searches of Temporal Series

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Code that makes it possible to carry out effective searches on temporal forms
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Searching for sounds can be a painful and tedious task when dealing with large-scale databases. Even when metainformation is available, query results are often far from the mental image imagined by the user. Today, there is no system that transforms the intuitive projection of a sound idea into an effective search; sound samples do not let users extract high-level information such as melody or lyrics from songs.

Project Description & Goals

Beginning with this observation, we have developed a code that makes it possible to carry out effective searches on temporal forms and take into account the multidimensional nature of sound perception. This makes it possible to carry out searches based on the temporal form of the descriptors rather than on mean values. These descriptors are modeled to obtain their average, standard deviation as well as the form of their temporal evolution via a symbolic representation enabling both compact storage and an effective search. However, it was essential that the comparison of temporal series that make it possible to obtain a similarity based on perceptive criteria for objects that could possibly be very different mathematically. Using an approach derived from Dynamic Time Warping (DTW), we have developed a robust measure of similarity following non-linear distortions such as range, noise sound, and unique values. Thanks to a new algorithm for indexing, it is possible to obtain the best element from a database containing several million sound samples almost immediately.

Our study then opened to the implementation of higher-lever interactions. We studied the possibility of a query that is pertinent to several temporal curves simultaneously, going beyond the framework of the simple consideration of often less relevant criteria. Thanks to new heuristics, we have carried out the first precise multi-objective search algorithm for temporal series.

These techniques apply to all fields of scientific research due to the ubiquity of the temporal information. Multi-objective searches of temporal series are open to numerous applications in fields ranging from medical analysis to robotics.This also enables the installation of a system of request by vocal imitation based on multiples of spectral descriptors.

These advances have been implemented in an interface using iPad multi-touch technology.

IRCAM's team: Musical Representations team.

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