FRIDAY MORNING, 4 JULY 2008 ROOM 242B, 8:00 A.M. TO 3:00 P.M. Session 5aAAa Architectural Acoustics: New Frontiers in Room Acoustical Modeling I Murray Hodgson, Cochair The University of British Columbia, Department of Electrical and Computer Engineering, 2332 Main Mall, Vancouver, BC V6T 1Z4, Canada Vincent Valeau, Cochair Laboratoire d’Etudes Aérodynamiques (LEA), Université de Poitiers - ENSMA - CNRS, Bâtiment K, 40 Avenue du Recteur Pineau, Poitiers, F-86022, France Contributed Papers 8:00 that multiresolution geometry provides more spatially accurate results than 5aAAa1. Multiresolution geometrical-acoustics modeling. Benjamin single-resolution approximations when using GA techniques, and that this Markham ͑Rensselaer Polytechnic Institute, Greene Bldg., 110 8th St., improved accuracy is aurally significant. Troy, NY 12180, USA,
[email protected]͒, Paul Calamia ͑Rensselaer Poly- technic Institute, Greene Bldg., 110 8th St., Troy, NY 12180, USA, calamp 8:20 @rpi.edu͒ 5aAAa2. On the analysis of the time spreading of sound diffusers. Javier Redondo ͑IGIC - Universitat Politècnica de València, Cra. Nazaret- ͑ ͒ ͒ Geometrical-acoustics GA modeling techniques assume that surfaces Oliva S”N, E-46730 Gandia, Spain, fredondo@fis.upv.es , Rubén ͑ are large relative to the wavelengths of interest. For a given scenario, prac- Picó EPSG - Univ. Politécnica de Valencia, c” Nazaret-Oliva s”n, 46780 titioners typically create a single 3D model with large, flat surfaces that sat- Grau de Gandia, Spain, rpico@fis.upv.es͒, Mark R. Avis ͑University of isfy the assumption over a broad range of frequencies. Such geometric ap- Salford, Acoustics Research Centre, Newton Building, M5 4WT Salford, proximations lead to errors in the spatial distribution of the simulated sound UK,
[email protected]͒ field because geometric details that influence reflection and scattering be- Since the invention of sound diffusers three decades ago a substantial havior are omitted.