李娟;李军锋;颜永红;

• 1:中国科学院语言声学与内容理解重点实验室

摘要：

声像距离是声像位置的重要信息,为了完整地描述重建声场中感知声像位置,需在虚拟声场中重建出声像距离。本文基于人耳对距离的感知机理,将镜像法引入波场合成技术中,通过模拟反射声来控制感知声像距离。基于"比较判断律"的主观测听实验表明:通过模拟房间反射声受试者更明显地感受到声像距离的变化,并且变化规律与人耳对距离的感知机理相符合。因此在基于波场合成的声重放系统中,通过模拟反射声和有效地控制反射声能量可以准确地重建出声像距离。

关键词：

Abstract: Source distance plays an important role in the realistic acoustic environment,so the synthesis of perceived distance is of great significance for sound field reproduction.From listener's perspective,reverberation can improve perceived distance,especially the early reverberation.Based on the mechanism of human perception and Huygens principle,the image method formulation has been introduced into the Helmholtz integral equation to synthesize reverberant sound field.The proposed method can provide realistic changes in direct-to-reverberant energy ratio and sound intensity while the distance between the listener and source changes.Subjective listening test has proved that the proposed method can provide more authentic distance perception in the reproduced sound field.

Keywords:

基金项目: 国家自然科学基金(10925419,90920302,10874203,60875014,61072124,11074275,11161140319)资助

通讯作者:

Email:

参考文献：

• 1 Theile G,Wittek,H.Wave field synthesis:A promising spatial audio rendering concept.Acoust.Sci.&Tech.,2004;25:393-399
• 2 Theile G,Wittek H,Reisinger M.Potential wave field synthesis applications in the multichannel stereophonic world.In:Proc.AES 24th International Conference,2003:43-57
• 3 Zahorik P.Assessing auditory distance perception using virtual acoustics.J.Acoust.Soc.Am.,2002;111:1832-1846
• 4 Zahorik P.Auditory display of sound distance.In:Proc.2002 International Conference on Auditory Display,2002
• 5 Sascha Spors,Rudolf Rabenstein,Jens Ahrens.The theory of wave field synthesis revisited.In:Proc.AES 124th Convention,2008
• 6 Williams E G.Fourier acoustics:sound radiation and near field acoustical holography.Academic Press,1999
• 7 Berkhout A J,de Vries D,Vogel P.Acoustic control by wave field synthesis.Journal of the Acoustic Society of America,1993;93(5):2764-2778
• 8 Spors S.Extension of an analytic secondary source selection criterion for wave field synthesis.In:Proc.AES 123th Convention,2007
• 9 Peterson P.Simulating the response of multiple microphones to a single acoustic source in a reverberant room.Journal of the Acoustical Society of America,1986;80(5):1527-1529
• 10 Allen J,Berkley D.Image method for effciently simulating small room acoustics.Journal of the Acoustical Society of America,1979;65(4):943-950
• 11 Thurstone L L.Psychophysical analysis.Am.J.Psych.,1927;38:368-389
• 12 Thurstone L L.A Law of comparative judgment.Psychological Review,1927;34:273-286
• 13 Brown,Thomas C,George L.Peterson.An enquiry into the method of paired comparison:reliability,scaling,and thurstone's Law of comparative judgment.General Technical Report RMRS-GTR-216,2009