The Effect of Changes in Position of Sound Source and Microphone on Acoustic Measurements in Small Rooms. A Case Study

• Authors: D. Mleczko , T. Wszołek
• Languages of publication: EN

Abstracts

EN

Results of computer simulations and measurements in real interior for varying location of sound source and microphone are shown in the paper. A small room with a volume of 47 m^3 was used for this purpose. The objective of measurements and calculations was to determine the sound pressure level and other parameters derived from the room impulse response (T_{30}, EDT, C_{80}, STI) followed by the sensitivity analysis of those parameters to changing the location and orientation of the sound source and the receiver. In order to determine these parameters, the room impulse response was measured using MLS method. Experimental studies have been used to verify the acoustic room model built with use of enhanced radial method algorithms and its sensitivity. That allowed complementary and extended simulation studies on the room acoustic characteristics and finally determination of sensitivity of output parameters to changes of location and orientation of the measurement channel elements.

Keywords

EN

43.20.Dk; 43.50.Jh; 43.55.Ka; 43.58 Ta; 43.55.-n; 43.55.+p

Discipline

• 43.55.+p: Architectural acoustics

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 4A
• Pages: A-131-A-134

Dates

published

2014-04

Contributors

author

D. Mleczko

• AGH University of Science and Technology, Department of Mechanics and Vibroacoustics, Al. A. Mickiewicza 30, 30-059 Krakow, Poland

author

T. Wszołek

• AGH University of Science and Technology, Department of Mechanics and Vibroacoustics, Al. A. Mickiewicza 30, 30-059 Krakow, Poland

References

• [1] D. Mleczko, Doctoral thesis, AGH University of Science and Technology, Kraków 2004
• [2] ISO 3382-1:2009, Acoustics - Measurement of room acoustic parameters - Part 1: Performance spaces
• [3] I. Witew, P. Dietrich, D. de Vries, M. Vorländer, in: Proc. Int. Symp. Room Acoustics (ISRA 2010), Australian Acoustical Society, Melbourne 2010
• [4] I. Witew, G. Behler, Forum Acust. 2005, Eds.: F. Augusztinovicz, A.B. Nagy, Z. Hunyadi, OPAKFI Tudomanyos Egyesület, Budapest 2005, p. 2291
• [5] R. San Martin, M. Arana, J. Acous. Soc. Am. 86, 133 (2008)
• [6] D. Mleczko, P. Kleczkowski in: 59th Open Seminar of Acoustics, Ed. A. Józefczak, Polish Acoustical Society, Poznań Division, Poznań - Boszkowo 2012, p. 179
• [7] D. Mleczko, T. Wszołek, in: 35rd Winter School Vibroacoustical Hazards Suppression, Ed. M. Roczniak, Upper Silesian Division of the Polish Acoustical Society, Gliwice - Ustroń 2007, p. 111
• [8] M. Vorländer, in: Proc. Baltic-Nordic Acoustics Meeting (BNAM 2010), Bergen 2010, CD
• [9] M. Vorländer, in: International Seminar on Virtual Acoustics, Universitat Politècnica de València, València 2011, p. 72

Identifiers

DOI

10.12693/APhysPolA.125.A-131