Is My Decoder Ambisonic
Is My Decoder Ambisonic
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我的解码器是Ambisonic吗
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
E. Benjamin
中科院分区：
文献类型：
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作者：
Aaron J. Heller;Richard Lee;E. Benjamin
在早期的论文中，本文作者确定了高保真度立体声解码器设计的各个方面的重要性：与使用中的扬声器阵列的几何形状匹配的解码矩阵、相位匹配的架子滤波器和近场补偿。这些都需要准确再现空间定位线索，如耳间时间差（ITD），耳间电平差（ILD）和距离线索。遗憾的是，文献中报道的许多高保真度立体声再现的收听测试要么省略了所使用的解码的细节，要么利用次优解码。在本文中，我们回顾了声学和心理声学标准的高保真度立体声再现，提出了一种方法和工具的“黑盒”测试，以验证候选解码器的性能，并提出和讨论一些广泛使用的解码器的测试结果。
In earlier papers, the present authors established the importance of various aspects of Ambisonic decoder design: a decoding matrix matched to the geometry of the loudspeaker array in use, phase-matched shelf filters, and near-field compensation. These are needed for accurate reproduction of spatial localization cues, such as interaural time difference (ITD), interaural level difference (ILD), and distance cues. Unfortunately, many listening tests of Ambisonic reproduction reported in the literature either omit the details of the decoding used or utilize suboptimal decoding. In this paper we review the acoustic and psychoacoustic criteria for Ambisonic reproduction, present a methodology and tools for “black box” testing to verify the performance of a candidate decoder, and present and discuss the results of this testing on some widely used decoders.