Combined spherical nearfield acoustic holography and sound quality analyses

Abstract

The Spherical Nearfield Acoustic Holography—Sound Quality (SNAH-SQ) hybrid methodology is proposed in this paper. This methodology builds the mapping model from distribution of sound pressure to sound quality parameters on basis of reconstruction of the three-dimensional distribution of interior acoustic parameters reconstructed by SNAH. The three-dimensional distribution of sound quality parameters related to the human’s subjective auditory experience can be obtained. The sound field which contained two monopole sound sources is used to conduct numerical simulation study. The distribution of sound quality parameters and the sound source localization results varied with the sound field reconstruction distance, sound frequency, and intersection angle between two sound sources. The advantages of the traditional sound source localization by nearfield acoustic holography and the sound quality sound field evaluation are adopted in the SNAH-SQ method which could provide an approach to revealing the threedimensional inherent correlation between noise source locations and sound quality parameters distribution, and locate the noise sources with most annoyance.