基于UCOSII操作系统的解码功放耳放一体化研究  

Research on the integration of decoding power amplifier and headphone amplifier based on UCOSII operating system

作　　者：苑家玮 朱海霞[1,2] 

机构地区：[1]南京航空航天大学金城学院,江苏南京211156 [2]南京航空航天大学,江苏南京210016

出　　处：《江苏科技信息》2017年第19期26-27,共2页Jiangsu Science and Technology Information

摘　　要：文章利用基于UCOSII操作系统通过VS1003音频解码器对SD卡里的MP3/WMA等格式的歌曲进行解码输出,并将歌曲文件等信息显示在TFTLCD屏上。电路中经过3.5 mm立体声插头等连接由LM1875制作的2.0声道的功放和由三极管、运放等元器件搭建的耳放电路,实现了STM32控制VS1003芯片输出并通过电路对音频信号的放大及滤波,性能良好。In this paper, based on UCOSII operating system through the VS1003 audio decoder, songs of MP3/WMA and other formats in SD card are decoded and output, and then information of song files and other information are displayed on the TFTLCD screen. In the circuit, the 3.5 mm stereo plug connects the 2.0-channel amplifier produced by LM1875 and the audion, operational amplifier and other components build the headphone amplifeir, to achieve STM32 controlling VS1003 chip output and amplification and filtering of the audio signal through the circuit, which is of good performance.

关 键 词：UCOSII VS1003 LM1875 

分 类 号：TN764[电子电信—电路与系统]