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Erschienen in:
2015 | OriginalPaper | Buchkapitel
3D Panning Based Sound Field Enhancement Method for Ambisonics
verfasst von : Song Wang, Ruimin Hu, Shihong Chen, Xiaochen Wang, Yuhong Yang, Weiping Tu
Erschienen in: Advances in Multimedia Information Processing -- PCM 2015
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Abstract
When conventional first order Ambisonics system uses four loudspeaker with platonic solid layout to reconstruct sound field, the 3D acoustic field effect is limited. A new signal distribution method is proposed to enhance the reproduced field without increasing loudspeakers. First, a platonic solid is extended to get more new vertexes, based on the traditional Ambisonics signal distribution method, original field signal is distributed to loudspeakers at original and new vertexes of platonic solid. Second, signals of loudspeakers at new vertexes are distributed to loudspeakers at original vertexes by a new 3D panning method, then loudspeakers at new vertexes of platonic solid are deleted, only original vertexes of platonic solid are left. The proposed method can improve the quality of the reconstructed sound field and will not increase the complexity of loudspeaker layout in practice. Results are verified through objective and subjective experiments.