基于可伸缩感知音频编码的语音/音频联合编码

2014 IEEE/ACIS 13th International Conference on Computer and Information Science (ICIS) Pub Date : 2014-06-04 DOI:10.1109/ICIS.2014.6912172

Li Gao, R. Hu, Yuhong Yang

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引用次数: 1

摘要

随着全球移动通信技术的发展，各种异构通信环境、频繁波动的带宽和多形式的信号对多媒体信号编码技术提出了新的挑战。可扩展音频编码(SAC)可以提供不同编码质量之间的平滑转换，是对不同类型音频信号进行编码的最佳选择，可以在多媒体通信中产生更加可靠和一致的业务质量。提出了一种基于语音/音频联合编码方法的可扩展音频编码系统和基于位平面的听觉感知重要性模型。在移动多媒体业务中，系统将同时考虑音频内容和网络带宽的波动，以获得稳定的服务质量。实验结果表明，在相同码率下，该方法的主观质量略好于G.729.1，信噪比提高0.3dB。

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Joint speech/audio coding based scalable perceptual audio coding

With the technical evolution of global mobile communications, various heterogeneous communication environments, frequently fluctuant bandwidth and multiform signals put new challenges to coding technology of multimedia signals. Scalable Audio Coding (SAC) can provide smooth transition between different coding qualities, which is an optimal choice for coding audio signals of different types and can produce more reliable and consistent service quality in multimedia communications. A scalable audio coding system based on joint speech/audio coding method and an auditory perceptual importance model based on bit-plane are proposed here. Both the audio content and the network bandwidth fluctuation will be considered in the system to obtain stable service qualities in mobile multimedia services. Experimental results indicate that with the same bit rates the subjective quality of proposed method is slightly better than G.729.1 and the SNR is improved by 0.3dB.

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来源期刊

2014 IEEE/ACIS 13th International Conference on Computer and Information Science (ICIS)

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