基于FPGA的电子琴动态录音与回放系统的设计

Design of Electronic Organ System Recording and Replaying Based on FPGA

大多数的电子琴设计都有弹奏和播放功能,但能自动对弹奏的乐曲进行动态录音并可改变回放快慢的设计却很少,而该设计采用VHDL语言有限状态机的设计方法对ROM/RAM控制电路进行编程,基于QuartusⅡ6.0开发平台仿真编译,下载到FPGA芯片(CycloneII EP2C8Q208)中测试,准确地实现了电子琴动态录音与回放并快慢可调功能。实验表明采用FPGA实现音乐存储、动态录音与回放演奏系统是可行的,为实现音乐存储与播放展示了良好的应用前景,也为各类多媒体大容量语音芯片系统设计提供了一种新的技术方法。

Most designs of electronic organs have the essential functions of playing and replaying, but few are equipped with the device of dynamic recorging of the music being played and the device of speed adjustment. This design is based upon Quartus Ⅱ 6.0,adopting the design of VHDL state machine, thus making the recording and replaying speed of the electronic organ adjustable,which indicates that it is feasible to adopt FPGA to record and replay music. This design brings forth a favorable prospect for music recording and replaying and provids a new technic for the design of bulky sound chips of diversified multimedia.