Loudspeaker triplet selection based on low distortion within head for multichannel conversion of smart 3D home theater

Loudspeaker triplet selection based on low distortion within head for multichannel conversion of smart 3D home theater
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基于头内低失真的扬声器三元组选择用于智能3D家庭影院的多声道转换

DOI:
10.1002/cpe.4796
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发表时间:
2018-11
期刊:
Concurrency and Computation:Practice and Experience
影响因子:
--
通讯作者:
Weiping Tu
Weiping Tu
中科院分区:
其他
文献类型:
--
作者:
Dengshi Li;Ruimin Hu;Xiaochen Wang;Weiping Tu

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近年来,随着3D电影产业的蓬勃发展,基于物联网(IoT)的3D智能家庭影院的需求不断增长。剧院里安装了大量的扬声器,以获得更逼真的3D音效。然而,家中的扬声器数量有限。因此,需要进行多通道转换才能在家中实现影院3D音效。传统上,原始系统的被替换的扬声器信号被分配给转换后的系统的“扬声器三元组”。需要大量的主观评价来判断替换扬声器位置与由扬声器三元组重建的“幻影源”位置的一致性。在这项研究中,在计算了给定区域内再现声场的最小二乘误差后,我们探索了再现声场的低失真与扬声器三元组位置之间的约束。使用这个约束规则,我们提出了一个新的扬声器三元组选择标准,可以大大减少选择最佳扬声器三元组的主观评价的数量和时间。仿真和主观评价实验表明,该方法优于传统方法,可成功应用于多通道转换。
In recent years, with the vigorous development of 3D film industry, the demand for 3D Smart Home Theater, based on Internet of Things (IoT), continues to grow. Theaters are populated with a large number of loudspeakers for more realistic 3D sound effects. However the number of loudspeakers in home is limited. Therefore, multichannel conversion is required to achieve theater 3D sound effects in home. Traditionally, the replaced loudspeaker signal of the original system is assigned to a “loudspeaker triplet” of the converted system. A large amount of subjective evaluations is necessary to judge the consistency of the replaced loudspeaker position with the “phantom source” positions reconstructed by loudspeaker triplets. In this study, after calculating the least‐squares errors of the reproduced sound field within a given region, we explore the constraint between the low distortion of the reproduced sound field and the loudspeaker triplet positions. Using this constraint rule, we present a new loudspeaker triplet selection criteria that can greatly reduce the number and time of subjective evaluations for selecting the optimal loudspeaker triplet. Simulation and subjective evaluation experiments indicate that the proposed selection method outperforms the traditional method, and that the proposed method can be successfully applied to multichannel conversion.
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