试听室不同处双耳房间脉冲响应的相关性分析
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摘要
现有的试听室大多在中心倾听位置附近设有多个座位,但是多人同时听音,由于人体散射的影响,对试听环境的最佳听音位置必然造成影响。在不同的座列方式下不同座位听音效果与最佳听音位置有何差异,这些问题都没有定量的分析和研究。分析了试听室不同听音位置处与中心倾听位置双耳房间脉冲响应的相关系数,以及1/3倍频程频谱幅度差异,发现不同的座位布放方式、不同声源方向均会引起不同位置处双耳房间脉冲响应函数的相关系数以及频谱发生明显改变,而这些数值的变化范围达到多大才能引起主观听感上的明显变化尚有待于进一步的研究验证。
There are set several seats near the center listening spot in most listening rooms,but,due to the scattering of the human body,the sweet spot of the listening room will inevitably be affected. There is no quantitative analysis and research about the difference of subjective listening effect between the sweet spot and other seats under different seat arrangement. The binaural room impulse response coefficients of different seats and 1 /3 octave spectrum amplitude difference are analyzed,which are affected by the way of seat setting and the sound direction. The difference can cause a change in the subjective hearing need to be further verified yet.
There are set several seats near the center listening spot in most listening rooms,but,due to the scattering of the human body,the sweet spot of the listening room will inevitably be affected. There is no quantitative analysis and research about the difference of subjective listening effect between the sweet spot and other seats under different seat arrangement. The binaural room impulse response coefficients of different seats and 1 /3 octave spectrum amplitude difference are analyzed,which are affected by the way of seat setting and the sound direction. The difference can cause a change in the subjective hearing need to be further verified yet.
引文
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[6]ANDO Y.Concert hall acoustics[M].Berlin Heidelberg:Spring-Verlag,1985.
[2]谢菠荪,郭天葵.非中心倾听位置的立体声像分析[J].声学学报,2004,29(5):445-452.
[3]ITU.Multichannel stereophonic sound system with and without accompanying picture,ITU-R BS 775[S].[S.l.]:ITU,2006.
[4]国家质量技术监督局.GB/T 14221—1993广播节目试听室技术要求[S].北京:中国标准出版社,1993.
[5]齐娜.一种中国人声学头模:中国,实用新型201120555787.X[P].2011-12-27.
[6]ANDO Y.Concert hall acoustics[M].Berlin Heidelberg:Spring-Verlag,1985.