桌面PC的性能日益提高，Java虚拟机的优化技术也不断获得突破，这一切使得用Java处理实时信号成为可能。本文将通过设计和构造一个支持实时MP3、WAV和Ogg音频格式解码/回放的Java音乐播放器，阐述用JavaSound API编写音频处理程序的思路和一般过程。-desktop PC performance and increasing the Java virtual machine has been optimized technology breakthrough All of this makes Java real-time signal processing possible. This paper will be designed and constructed by a real-time support for MP3, WAV and Ogg audio format decoding/playback Java music player, elaborated with the preparation JavaSound API Audio processing ideas and general process.