Project Details
Projekt
Measurement, processing and modeling of natural acoustic environments
Applicant
Professor Dr. Boaz Rafaely
Subject Area
Acoustics
Term
from 2011 to 2015
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 174776315
Natural acoustic environments in three dimensional spaces, such as sound in rooms and concert halls, are spatially complex. Recent studies proposed the use of spherical microphone arrays for the measurement and analysis of enclosed sound fields, due to the 3D analysis capabilities of these arrays. Aspects of array design and array processing, such as array configurations, spatial sampling, the effect of noise and spatial resolution, have been recently studied. However, a comprehensive association between measured sound fields and their spatial perception has not yet been established. This subproject aims lo pursue the measurement, processing and modelling of enclosed sound fields, therefore facilitating controlled reproduction and evaluation of these sound fields, leading to improved understanding ofthe association between sound fields and their spatial perception. In the first part of the research, theoretical foundations for the design of spherical microphone arrays that facilitate sound field analysis at a wide frequency range with high spatial resolution will be established. This will then be used in the design and realization of spherical array systems that measure natural sound fields in practice. In the second part of the research, optimal spherical microphone array processing methods will be developed that facilitate enhanced analysis of sound field elements such as amplitude and direct! on-of-arrival of reflections, and spherical harmonics coefficients, in the presence of noise and interferences. In the final part, parametric sound field modelling will be developed that facilitates perceptual evaluation of reproduced sound.
DFG Programme
Research Units
International Connection
Israel
