20 C - Recent advances in sound absorption and diffusion of materials/devices

Day / Time: 10.09.2019, 08:40-14:40
Room: Lissabon 2
Typ: Lecture

Session chair


08:40 - 09:00
Peter D'Antonio, Mélanie Nolan, Efren Fernandez-Grande, Cheol-Ho Jeong
Design of a New Testing Chamber to Determine the Absorption, Diffusion and Scattering Coefficients
09:00 - 09:20
Eric Ballestero, Vicente Romero García, Noé Jiménez, Jean Philippe Groby, Stephen Dance, Haydar Aygun
3D Printed Quadratic Residue Metadiffuser – Design and Measurements of an Optimized Deep-Subwavelength Sound Diffuser
09:20 - 09:40
Noé Jiménez, Trevor Cox, Jean Philippe Groby, Vicente Romero García
Beyond phase grating diffusers using locally-resonant metamaterials
09:40 - 10:00
Vicente Romero García, Noé Jiménez, Olivier Richoux, Georgios Theocharis, Jean Philippe Groby, Vincent Pagneux
Perfect acoustic absorption in deep sub-wavelength structures for the ventilation problems with degenerate resonators
10:00 - 10:20
Emma Arvidsson, Erling Nilsson, Delphine Bard-Hagberg, Ola Karlsson
Pattern and Orientation of Diffusers in Rooms with an Absorbent Ceiling
10:40 - 11:00
Louena Shtrepi
Advances in diffusive surface design using 3D architectural parametric modeling programs
11:00 - 11:20
Javier Redondo, Juan M. Herrero, Luís Godinho, Ricardo Patraquim, Trevor Cox
Application of multi-objective optimization techniques to the design of sound diffusers
11:20 - 11:40
Alejandro Bidondo, Leonardo Pepino
Room acoustic texture: a methodology for its quantification
14:00 - 14:20
Mélanie Nolan
Anisotropic sound fields in reverberation-room measurements of sound absorption coefficients: Wavenumber spectrum theory
14:20 - 14:40
Shinsuke Nakanishi
Sound Absorption of Thin Resonators with a Winding Neck Extension in Surface Panel