基于LabVIEW的乐曲声音文件的制作  

Production of music wave file with LabVIEW

作　　者：蒋萍花[1] 

机构地区：[1]青岛远洋船员职业学院,山东青岛266071

出　　处：《电声技术》2016年第1期73-77,共5页Audio Engineering

摘　　要：计算机音乐目前已进入到物理模型阶段,可不采用任何乐器或声音的波形样本生成乐曲。Lab VIEW是一种强大的图形化的编程语言。针对乐谱制作计算机音乐,提出了采用Lab VIEW来模拟乐器的演奏,生成可直接播放的乐曲声音文件。采用Lab VIEW中VI的技术和设计思路,首先实现了ADSR包络,然后用ADSR包络对粗糙的信号源进行调制,实现单个音符的声音的产生。对于乐谱,提出了其高音部分和低音部分相叠加的模块图设计思路。最后给出了声音文件写出的Lab VIEW模块图的设计。实验结果表明用Lab VIEW来制作乐曲声音文件是可行的,其乐曲即可保持传统旋律,又可由具有计算机音乐的各种特殊效果,有很好的应用前景。Computer music has entered the stage of physical model to compose music wave file without any instruments or sound samples.LabVIEW is a powerful and graphic programming language.To generate the computer music for a score, use LabVIEW to mimic the playing of instruments and generate a music wave file that can be directly played.With the technique and design method of VI in LabVIEW, the ADSR envelope is firstly implemented.Then a coarse signal source is modulated by the ADSR envelope to produce the sounding of a single note.For the score, the design of the block diagram in LabVIEW of adding the treble part and bass part is presented.The design of the diagram of writing wave file is also presented.The ex- periment shows that it is feasible to compose music wave file with LabVIEW.The music can have both the traditional melody and the special effects of computer music.The technique has a good application prospect.

关 键 词：LABVIEW ADSR包络 信号源 调制 模块图 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]