首页> 外国专利> METHOD FOR RENDERING MULTI-CHANNEL AUDIO SIGNALS FOR L1 CHANNELS TO A DIFFERENT NUMBER L2 OF LOUDSPEAKER CHANNELS AND APPARATUS FOR RENDERING MULTI-CHANNEL AUDIO SIGNALS FOR L1 CHANNELS TO A DIFFERENT NUMBER L2 OF LOUDSPEAKER CHANNELS

METHOD FOR RENDERING MULTI-CHANNEL AUDIO SIGNALS FOR L1 CHANNELS TO A DIFFERENT NUMBER L2 OF LOUDSPEAKER CHANNELS AND APPARATUS FOR RENDERING MULTI-CHANNEL AUDIO SIGNALS FOR L1 CHANNELS TO A DIFFERENT NUMBER L2 OF LOUDSPEAKER CHANNELS

机译：将L1频道的多通道音频信号提供给不同数量的扬声器信道L2的方法和将L1频道的多通道音频信号提供给不同的扬声器信道数量L2的设备

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摘要

Multi-channel audio content is mixed for a particular loudspeaker setup. However, a consumer's audio setup is very likely to use a different placement of speakers. The present invention provides a method of rendering multi-channel audio that assures replay of the spatial signal components with equal loudness of the signal. A method for obtaining an energy preserving mixing matrix () for mixing L1 input audio channels to L2 output channels comprises steps of obtaining (s711) a first mixing matrix, performing (s712) a singular value decomposition on the first mixing matrixto obtain a singularity matrixprocessing (s713) the singularity matrixto obtain a processed singularity matrixdetermining (s715) a scaling factor, and calculating (s716) an improved mixing matrixaccording to=The perceived sound, loudness, timbre and spatial impression of multi-channel audio replayed on an arbitrary loudspeaker setup practically equals that of the original speaker setup.

机译：多声道音频内容被混合用于特定的扬声器设置。但是，消费者的音频设置很可能会使用不同的扬声器位置。本发明提供了一种呈现多声道音频的方法，该方法确保以相同的响度来重放空间信号分量。一种获得用于将L1个输入音频通道混合到L2个输出通道的节能混合矩阵（）的方法，包括以下步骤：获得（s711）第一混合矩阵，对第一混合矩阵执行奇异值分解以获得奇异矩阵处理（s713）奇点矩阵以获得处理后的奇点矩阵，确定（s715）缩放因子，并根据=在任意扬声器设置上回放的多声道音频的感知声音，响度，音色和空间印象来计算（s716）改进的混合矩阵几乎等于原始扬声器的设置。

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公开/公告号EP3022950B1

专利类型
公开/公告日2018-11-21

原文格式PDF
申请/专利权人 DOLBY INTERNATIONAL AB;
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申请/专利号EP20140747865
发明设计人 BOEHM JOHANNES;
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申请日2014-07-18
分类号H04S3/02;H04S7;
国家 EP
入库时间 2022-08-21 12:28:10

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