文档介绍：第1页基于 LabVIEW 的电子琴的设计摘要随着电子计算机的不断发展,以及软件开发技术的日新月异,电子计算机在数据的实时分析和处理,现实存贮等方面的优势与传统仪器相比越来越明显, 随着计算机性价比的不断提升,传统仪器价格又高居不下,加上传统仪器的功能单一,发展虚拟仪器已经成为一个不可阻挡的历史潮流。在20世纪 80年代, 美国国家仪器公司(NI) 最早提出了虚拟仪器的概念,引发了传统仪器领域的一场重大变革,使得计算机网络技术得以长驱直入仪器领域,和仪器技术结合起来,从而开创了“软件即是仪器”的先河。而虚拟仪器的设计,需要图形化的开发环境 LabVIEW 。本文讲解了基于 LabVIEW 的电子琴的设计,通过对声音的频率设置,以及 LabVIEW 中的常用编程控件,来实现电子琴发声,本程序能实现电子琴基本演奏功能,还有音乐播放功能。关键词:虚拟仪器, LabVIEW ,电子琴第2页 E lectric P iano D esign B ased on LabVIEW Abstract With the rapid development puter technology and software development technology, the advantagement puter inanalyzing, processing, displaying, storing the data es more and more obvious. Atthe same time, developing virtual instrument has e an irresistible trend ofhistory along with high cost performance puter, high price oftraditional instruments and the single function ofthe traditional instruments. Inthis environment, the American pany firstly began tothe study ofthe virtual oscilloscope; and then launched aplat for the LabVIEW. This thesis designs aset ofvirtual oscilloscope based onthe basic structure ofthe virtual instrument and related knowledge ofsignal processing inauthor's procession. Itanalyzes the definition, structures and trend ofdevelopment ofthe virtual instrument. It introduces the basic knowledge related with virtual oscilloscope, which isFourier transform. Virtual instrument posed ofhardware and software intwo parts. This thesis introduces the hardware simply, but studies the software atfull length. Based onthe study ofthe two parts ofthe virtual instrument, the author designs the spectrum analysis module, memory module, display module and measurement module. Key Words: Virtual Instrument, LabVIEW, Electronic piano 第1页目录第1章绪论.................................................................................................................................. 1 电子琴的特色................................................................................................................... 1 电子琴的构成...................