INTERNATIONAL ORGANISATION FOR STANDARDISATION ORGANISATION INTERNATIONALE DE NORMALISATION ISO/IEC JTC1/SC29/WG11 CODING OF MOVING PICTURES AND ASSOCIATED AUDIO
INTERNATIONAL ORGANISATION FOR STANDARDISATION ORGANISATION INTERNATIONALE DE NORMALISATION ISO/IEC JTC1/SC29/WG11 CODING OF MOVING PICTURES AND ASSOCIATED AUDIO
复制标题
DOI：
--
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
Kaoru Watanabe
中科院分区：
文献类型：
--
作者：
Kaoru Watanabe
本文件概述了1996年9月16日至10月11日英国广播公司和日本放送协会对MPEG-2非向后兼容（NBC）多通道音频编码算法进行的主观聆听测试的准备工作和结果。它来源于测试[4]的详细报告。测试评估了以下多通道编解码器：256 kbit/s的MPEG-2 NBC MPEG-2 NBC 320 kbit/s的MPEG-2 NBC低复杂度版本320 kbit/s 1995版本向后兼容模式下640 kbit/s的MPEG-2 Layer II。测试程序和环境符合ITU-R建议BS-1116。包括侦听器可靠性和测试程序检查，并对结果进行了详细的统计分析。结果表明，所有编解码器都具有良好的性能。320kbit /s的MPEG-2 NBC编解码器通常比其他编解码器表现更好，尽管在这些严格条件下的一些测试片段不太透明，但它通过了EBU的“难以区分的质量”标准。总的来说，320 kbit/s的MPEG-2 NBC低复杂度版本的性能略逊于320 kbit/s的MPEG-2 NBC。值得强调的是，这些试验是按照最严格的试验方法进行的。不应使用不太严格的方法与其他测试结果进行比较。
This document presents an overview of the preparations for, and the results of, the subjective listening tests on the MPEG-2 Non-Backwards Compatible (NBC) multichannel audio coding algorithm carried out by the BBC and NHK between 16 September and 11 October 1996. It is derived from the detailed report of the tests [4]. The tests evaluated the following multichannel codecs: MPEG-2 NBC at 256 kbit/s MPEG-2 NBC at 320 kbit/s MPEG-2 NBC low-complexity version at 320 kbit/s 1995 version of MPEG-2 Layer II at 640 kbit/s in a backwards compatible mode. The test procedure and environments complied with ITU-R Recommendation BS-1116. Listener reliability and test procedure checks were included and a detailed statistical analysis of the results was performed. The results showed good performance for all of the codecs. The MPEG-2 NBC codec at 320 kbit/s generally performed better than the other codecs and, although not quite transparent for a few test excerpts under these rigorous conditions, it passed the EBU criterion for “indistinguishable quality”. Overall, the performance of MPEG-2 NBC low complexity version at 320 kbit/s was, by a small margin, not quite as good as that of MPEG-2 NBC at 320 kbit/s. It is worth emphasising that these tests were conducted according to the most rigorous of test methods. Comparisons to other test results using less rigorous methodologies should not be made.