面向学前教育教学的钢琴音色的计算机模拟  

Piano Timbre Simulation by Computer Oriented to Preschool Education and Teaching

作　　者：曹西征[1] 曹英[2] 孙林[1] 

机构地区：[1]河南师范大学计算机与信息技术学院,河南新乡453007 [2]新乡学院教育科学系,河南新乡453003

出　　处：《河南师范大学学报（自然科学版）》2010年第1期47-50,共4页Journal of Henan Normal University(Natural Science Edition)

基　　金：国家自然科学基金(60873104);河南省科技攻关项目(082102210107);河南师范大学引进博士科研启动基金(0716)

摘　　要：对面向学前教育教学的钢琴音色的计算机模拟方法进行了研究,建立了钢琴音色的频谱模型和振幅包络模型.利用一维离散余弦变换分析钢琴各音的频谱特性,将泛音参数作用于频谱模型;分析各音的波形影像,将振幅包络参数作用于振幅包络模型,最终生成钢琴的音色.实验表明,采用该方法产生的钢琴音色可完全满足教学要求,与通过录制产生钢琴音色的方法相比,该方法可大大节省资源成本.This paper discusses how to simulate the timbre of a piano by computer,in order to meet the preschool education and teaching. The frequency spectrum model and the amplitude envelope model of piano timbre are built. The frequency spectrum characteristics of every keys are analyzed by one dimensional discrete cosine transform. And every overtone parameters act on the frequency spectrum model. The amplitude envelope parameters are obtained by analyzing the wave shape images of every keys. And they act on the amplitude envelope model. Then the piano timbre is generated. The experiments show that the simulating piano timbre created by this method can meet completely the teaching requirement. Compared with the method by recording the piano timbre,this method can greatly economize the resource costs.

关 键 词：学前教育教学 计算机音乐 钢琴 音色 模拟 频谱 振幅包络 

分 类 号：TP399[自动化与计算机技术—计算机应用技术] J611.1[自动化与计算机技术—计算机科学与技术]