文档介绍：基于FPGA的乐曲演奏电路设计
摘要
设计了一种基于FPGA的电子琴,该电子琴由用VHDL硬件描述语言设计的核心部件和适当的外围电路构成,可从琴键上进行演奏也可自动进行乐曲演奏。
基于FPGA(现场可编程门阵列)芯片,利用VHDL语言,介绍了一种通用乐曲演奏电路的设计,可实现多个八度音阶的乐曲演奏,与简谱的对应关系简单,编程方便,占用资源少,通用性好,可作为IP core模块引用,构成复杂的SOPC系统.
关键词:电子琴;现场可编程门阵列(FPGA);智力产权核(IP core);超高速集成电路硬件描述语言(VHDL);乐曲
Abstract
An electronic piano is designed based on FPGA,which consists of core paris that designed by using VHDL hardware description languages,as well as some periphery musical perform ance can be donenot only by keys but also with automatic type in the electronic piano.
Based on FPGA,by VHDL language,this paper introduces a universal music circuit design,it can play high,middle and low multiple tonality,simple corresponding relation with simple musical notation,which programs easily using little can be used universally for IP core in plicated SOPC system.
Key words:electronic piano;Field Programmable Gate Array(FPGA);Intelligence Property core(IP core) ;Very-High-Speed Integrated Circuit Hardware Description Language(VHDL);music
目录
……………………………………………………4
简易电子琴设计介绍………………………………………………………………4
音乐发生器设计介绍………………………………………………………………4
2. FPGA功能与使用简介……………………………………………………………………6
FPGA简介……………………………………………………………………………6
FPGA的产生……………………………………………………………………6
FPGA的基本结构………………………………………………………………7
MAX+PLUSII……………………………………………………………………7
硬件描述语言VHDL…………………………………………………………………10
VHDL语言的优点………………………………………………………………10
利用VHDL语言设计数字系统的特点…………………………………………11
VHDL语言的基本结构…………………………………………………………13
VHDL的设计流程………………………………………………………………15
3. 简易电子琴设计及程序………………………………………………………………16
简易电子琴设计总体框图…………………………………………………………16
模块设计……………………………………………………………………………16
模块QIN设计…………………………………………………………………16
模块FANA设计…………………………………………………………………17
4. 音乐发生器设计及程序………………………………………………………………20
使用的乐谱…………………………………………………………………………20
音乐发生器设计及程序……………………………………………………………20
音乐发生器总框图……………………………………………………………20
可变分频器设计………………………………………………………