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| 1 | Analysis with binaural auditory model and experiment on the timbre of Ambisonics recording and reproduction显示文摘A scheme for analyzing the timbre in spatial sound with binaural auditory model is proposed and the Ambisonics is taken as an example for analysis.Ambisonics is a spatial sound system based on physical sound field reconstruction.The errors and timbre colorations in the final reconstructed sound field depend on the spatial aliasing errors on both the recording and reproducing stages of Ambisonics.The binaural loudness level spectra in Ambisonics reconstruction is calculated by using Moore's revised loudness model and then compared with the result of real sound source,so as to evaluate the timbre coloration in Ambisonics quantitatively.The results indicate that,in the case of ideal independent signals,the high-frequency limit and radius of region without perceived timbre coloration increase with the order of Ambisonics.On the other hand,in the case of recording by microphone array,once the high-frequency limit of microphone array exceeds that of sound field reconstruction,array recording influences little on the binaural loudness level spectra and thus timbre in final reconstruction up to the highfrequency limit of reproduction.Based on the binaural auditory model analysis,a scheme for optimizing design of Ambisonics recording and reproduction is also suggested.The subjective experiment yields consistent results with those of binaural model,thus verifies the effectiveness of the model analysis. | LIU Yang XIE Bosun | 2015 | Chinese Journal of Acoustics2015，34，4： | 1 |
| 2 | 6.1 channel general planar surround sound system显示文摘A new 6.1 channel surround sound system and its two signal mixing methods are proposed. Theoretical and experimental results show that the system is able to recreate 360° sound image in horizontal plane. Especiallys compared with current 5.1 channel system, lateral and rear image of the new system is improved obviously. Therefore it is suitable to be used as a general surround sound system. It is also proved that, the new system is fully compatible with 5.1 channel system, and current methods are available to record 6.1 channel signals. | XIE Bosun (Applied Phgsics Dept., South China University of Technology Guangzhou 510641) | 2001 | Chinese Journal of Acoustics2001，20，2： | 1 |
| 3 | 第16届全国儿科肾脏病学术会议征文通知显示文摘中华医学会儿科学分会肾脏学组和《中华儿科杂志》编辑委员会拟于2014年11月在广东省广州市联合举办“第16届全国儿科。肾脏病学术会议”。欢迎广大儿科肾脏病专业和相关专业同道踊跃投稿,积极参加会议交流。大会并将邀请国、内外专家专题报告。 | | 2014 | 中华儿科杂志2014，52，3： | 0 |
| 4 | Spatial Sound——History,Principle,Progress and Challenge显示文摘The aim of spatial sound or spatial audio is to reproduce the spatial information of sound,so as to recreate the desired spatial auditory events or perceptions.Recently,spatial sound becomes a hot topic in the fields of acoustics,signal processing,and communication.A series of spatial sound techniques have been developed and applied to a wide area of scientific research,engineering,and amusement.The history,principle,progress and applications of spatial sound technique are comprehensively reviewed in this article.Especially,spatial sound techniques based on different principles are united within the framework of spatial sampling and reconstruction theorem of sound field.The challenges and prospects of spatial sound are also addressed. | XIE Bosun | 2020 | Chinese Journal of Electronics2020，29，3： | 0 |
| 5 | 混合阶Ambisonics重放的分析与实验验证显示文摘Ambisonics是一系列基于声场的空间谐波分解和各阶近似的空间声系统,其重放声场方向信息的精确度与系统的复杂程度均随阶数的增加而增加.由于听觉系统对水平面空间信息的分辨率较垂直方向高,混合阶Ambisonics采用较高阶的空间谐波重构水平面方向声场,而用较低阶的空间谐波重构垂直方向声场,以实现感知性能与系统复杂性的折中.文中以28+1分层式扬声器布置为例,对混合阶Ambisonics重放的双耳重构声压进行分析,并和传统的高阶Ambisonics重放及目标声源的情况进行比较,同时进行了虚拟源定位实验验证.分析和实验结果表明,对实际中可实现的扬声器数目与布置,与传统的高阶Ambisonics相比,合理设计的混合阶Ambisonics在保持非水平方向目标声源重放性能的同时,可改善水平面目标声源的重放性能. | 麦海明 谢菠荪 江建亮 | 2018 | 华南理工大学学报(自然科学版)2018，46，3： | 0 |
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