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The omnidirectional character is one of important requirements for the sound source used in near-field head- related transfer function (HRTF) measurements. Based on the analysis on the radiation sound pressure and directivity character of various spherical polyhedron sound sources, a spherical dodecahedral sound source with radius of O. 035 m is proposed and manufactured. Theoretical and measured results indicate that the sound source is approximately omnidirectional below the frequency of 8 kHz. In addition, the sound source has reasonable magnitude response from 350Hz to 20 kHz and linear phase characteristics. Therefore, it is suitable for the near-field HRTF measurements. 相似文献
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多通路三维空间环绕声系统 总被引:1,自引:1,他引:0
提出了一种与5.1通路平面环绕声兼容的三维空间环绕声系统。声像定位分析与实验结果表明该系统可重发上半空间范围的声像。系统不但前后区域声像稳定,还改善了5.1通路系统侧向声像不稳定的问题,并且听音区域也较宽。该系统可以用于产生特殊声效和重现音乐厅的空间感效果。 相似文献
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