摘要
依据ETSI颁布的DRM系统标准,对DRM系统所采用的信源编码和信道编码方法进行了分析和研究,详细阐述了AAC、CELP和HVXC三种信源编码的工作原理和实现方法,详细阐述了卷积编码器的工作原理。另外,简要介绍了频带恢复技术在DRM中的应用。
AcCording to the DRM system standard released by the ETSI, source encoding and channel encoding are analyzed and researched in this paper, Then the principle and realization of three approaches - AAC, CELP, HVXC - of SOurce encoding are described particularly. The theory of convolutional encoder is investigated in this paper. The spectral band replicated for DRM system is introduced simply.
出处
《现代电子技术》
2008年第15期57-59,共3页
Modern Electronics Technique
