视听技术的声场分区重放方法研究

Research on Audio-visual Technology for Multi-zone Sound Field Reproduction

近年来视听技术发展迅速,大众对于个性化的需求不断增加,同一物理空间中的人同时访问不同的多媒体信息流,对于视频媒体来说易于实现,但对于音频信息流来说实现比较困难。因此,本文对基于正交基扩展的多区声场重放方法进行了深入研究,首先结合连续扬声器设置理论加入了不同的扬声器阵列类型进行仿真测试,然后在消声室进行声学实测实验,最后将实测与仿真结果作对比分析,综合讨论此方法的实用性并针对问题提出建议。

In recent years,with the rapid development of audio-visual technology,the public’s demand for personalization is increasing.People in the same physical space can access different multimedia information streams simultaneously,which is easy to implement for video media,but it is difficult for audio information streams.Therefore,this paper researches on the multi-zone sound field reproduction based on orthogonal basis expansion.Firstly,according to the continuous loudspeaker concept theory,different types of speaker arrays were simulated for simulation tests.Secondly,the acoustic measurement experiments were performed in the anechoic chamber.Finally,the actual measurement and simulation results were compared and analyzed,and the performance and problems of this method in practical applications were discussed and suggestions were made for different problems.