Perforated Panel System Proposal for Variable Acoustic Solutions

Date

2017-08-30

Author

Eşmebaşı, Merve
Tanyer, Ali Murat
Çalışkan, Mehmet

Metadata

Show full item record

Item Usage Stats

51
views

0
downloads

In this paper, a variable acoustic system proposal which provides a flexible adaptation range for different functions or audience sizes is investigated. In order to achieve the aimed variable acoustic system, perforated panel systems’ sound absorption capabilities are examined. Changes in perforation characteristics; hole shape, diameter, central distance and perforation ratio, studied with physical models throughout the research. The physical model is controlled by a digital interface which is designed by Processing software sending commands to an Arduino board (Uno). Prototype of variable perforated panel system is driven by servo engines linked to an Arduino board. Thus, the defined angle on digital interface (Processing) is converted to physical movement. Afterwards, construction possibility of the proposed variable perforated panel system is clarified. Variations in sound absorption coefficients of the resulting perforated panel configurations are tested while the air gap behind and features of porous material remained constant. Required physical alterations in perforation are provided by the prototype as a variable acoustic system proposal. Data obtained from sound absorption variations by the proposed system are presented in results.

Subject Keywords

Absorbers, Perforated, Variable

URI

https://hdl.handle.net/11511/79880

Conference Name

INTER-NOISE 2017 - 46th International Congress and Exposition on Noise Control Engineering,

Collections

Department of Architecture, Conference / Seminar

Suggestions

OpenMETU
Core

Design of a circular microphone array for panoramic audio recording and reproduction : Microphone directivity Hacıhabiboğlu, Hüseyin; Cvetkovic, Zoran (2010-05-22) Design of a circularly symmetric multichannel recording and reproduction system is discussed in this paper. The system consists of an array of directional microphones evenly distributed on a circle and a matching array of loudspeakers. The relation between the microphone directivity and the radius of the circular array is established within the context of time-intensity stereophony. The microphone directivity design is identified as a constrained linear least squares optimisation problem. Results of a subje...
On the Design and Implementation of Higher Order Differential Microphones De Sena, Enzo; Hacıhabiboğlu, Hüseyin; Cvetkovic, Zoran (2012-01-01) A novel systematic approach to the design of directivity patterns of higher order differential microphones is proposed. The directivity patterns are obtained by optimizing a cost function which is a convex combination of a front-back energy ratio and uniformity within a frontal sector of interest. Most of the standard directivity patterns-omnidirectional, cardioid, subcardioid, hypercardioid, supercardioid-are particular solutions of this optimization problem with specific values of two free parameters: the...
SOUND SOURCE LOCALISATION PERFORMANCE OF OPEN SPHERICAL ACOUSTIC INTENSITY PROBES UNDER REVERBERANT CONDITIONS Hacıhabiboğlu, Hüseyin (2014-04-25) Open-spherical acoustic intensity probes are microphone arrays based on the Kirchhoff-Helmholtz integral and are used in the measurement of active acoustic intensity. The acoustic intensity measurements obtained by these arrays can be used to localise sound sources. Previously, the performance of these arrays in acoustic free field conditions were obtained using numerical simulations and it was shown that they provide better performance than other types of probes. This paper discusses the implementation of ...
On the rotating elastic-plastic solid disks of variable thickness having concave profiles Eraslan, Ahmet Nedim (2002-07-01) In this paper, an analytical solution for the elastic-plastic stress distribution in rotating variable thickness solid disks is presented. The analysis is based on Tresca's yield criterion, its associated flow rule and linear strain hardening material behavior. It is shown that depending on the shape of the disk profile, the radial stress in the central region may exceed the circumferential stress. The plastic zone which develops away from the axis of the disk consists of three annular regions governed by d...
Perceptual Soundfield Reconstruction in Three Dimensions via Sound Field Extrapolation Erdem, Ege; De Sena, Enzo; Hacıhabiboğlu, Hüseyin; Cvetkovic, Zoran (2019-05-01) Perceptual sound field reconstruction (PSR) is a spatial audio recording and reproduction method based on the application of stereophonic panning laws in microphone array design. PSR allows rendering a perceptually veridical and stable auditory perspective in the horizontal plane of the listener, and involves recording using nearcoincident microphone arrays. This paper extends the PSR concept to three dimensions using sound field extrapolation carried out in the spherical-harmonic domain. Sound field render...

Citation Formats

M. Eşmebaşı, A. M. Tanyer, and M. Çalışkan, “Perforated Panel System Proposal for Variable Acoustic Solutions,” presented at the INTER-NOISE 2017 - 46th International Congress and Exposition on Noise Control Engineering, Hong Kong, China, 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/79880.