Space-time-frequency sound processing with spherical microphone arrays 01:06:39
Séminaire / Conférence
- Set Séminaires Recherche & Technologie
- Présentation du concert de l'Ensemble Intercontemporain du 29 novembre - None - None > Séminaires "Recherche et technologie" - None - None > Séminaires invités - None - None > Space-time-frequency sound processing with spherical microphone arrays
- Sept. 25, 2013
- Ircam, Paris
Participants
- Tal Szpruch (conférencier)
- Thibault Carpentier (conférencier)
- Markus Noisternig (conférencier)
- Olivier Warusfel (conférencier)
Tal Szpruch, Thibaut Carpentier, Markus Noisternig, Olivier Warusfel de l’équipe Espaces Acoustiques et Cognitifs,
présentent en anglais :
"Space-time-frequency sound processing with spherical microphone arrays"
Spherical microphone arrays (SMA) are among the most recently developed and most widely used systems for the spatiotemporal analysis of three-dimensional sound fields. Applying the Fourier Bessel expansion (FBE) the recorded sound field can be decomposed into spherical harmonics, which form a complete orthonormal set of basis functions on the two-sphere. This representation domain has many advantages for the space-time-frequency processing of acoustic wave fields.
This talk briefly summarizes the FBE theory and gives an in-depth discussion of different spherical microphone array processing methods that have been developed within the ANR project “Sample Orchestrator 2”, as for instance the analysis and re-synthesis of measured directional room impulse responses (DRIRs), the transcoding of recorded spatiotemporal sound fields to binaural and higher-order Ambisonics (HOA), and a hybrid reverberation engine using measured and feedback delay networks (FDN) that will be included into the next release of the spat~ signal processing library.
* """""" * """""" * * """""" * """""" * * """""" * """""" *
Le projet « Sample Orchestrator 2 (SOR2) » est financé par le programme Contenus Numériques et Interactions (CONTINT) 2010 de l’ANR.
http://sor2.ircam.fr/wordpress/