硬盘播放器音频解码电路的设计  

Design of an audio decoding circuit for hard disk player

作　　者：张凯[1] 王海滨[1] 易鹏飞[1] 唐赞 甘凤萍[1] 

机构地区：[1]西华大学电气信息学院,四川成都610039

出　　处：《现代电子技术》2015年第5期77-79,共3页Modern Electronics Technique

基　　金：四川省科技厅科技支撑项目(2012GZ0019);西华大学研究生创新基金项目(Ycjj2014080)

摘　　要：为满足超高清码流仪高品质的音频效果需求,设计了一种基于数字音频接收器CS8416和音频数/模转换器CS4398的高性能音频解码电路。该解码电路主要由数字音频接收电路、立体声数/模转换电路、模拟信号调理电路以及开关机静噪电路四部分组成。最高支持24位、192 k Hz采样频率的AES/EBU和S/PDIF音频数据的解码,设计的开关机静噪电路结构简单,能有效地抑制开关机时的冲击噪声。To satisfy the high quality audio requirement of ultra high definition （UHD） code stream instruments, a high performance audio decoding circuit based on digital audio receiver CS8416 and audio digital-to-analog （D/A） converter CS4398 is proposed. The circuit is mainly comprised of digital audio receiving circuit, stereo D/A conversion circuit, analog signal conditioning circuit and mute circuit. The decoder can support the decoding of AES/EBU and S/PDIF audio data （up to 24 bits and 192 kHz）. The structure of the proposed mute circuit is simple, and the clicks and pops during switch can be restrained effectively.

关 键 词：超高清码流仪 音频解码 AES/EBU S/PDIFT 

分 类 号：TN912-34[电子电信—通信与信息系统]