Abstract
Psychoacoustic research reveal that sound pressure level reduction in cabin does not mean improvement of human’s subjective auditory perception. This paper presents Patch Nearfield Acoustics Holography-Sound Quality (Patch NAH-SQ) combined analysis method with the advantages of NAH and SQ. This methodology breaks the limit of measurement aperture of conventional NAH and can visualize of spatial distribution of sound pressure and sound quality objective parameters of entire sound field by using a small number of microphones. From the 3D images of spatial distribution of sound pressure and sound quality objective parameters, the sound sources which most contribute to human’s auditory perception can be located. In this paper, the impact of the choice of parameters such as overlap ratio of Patch holographic surface, SNR, stand-off distance and frequency on reconstruction error of sound pressure and sound quality objective parameters is examined. Finally, the experiment of Patch NAH-SQ methodology proposed is validated in anechoic camber, the results are presented and analyzed.
Published Version
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