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008基于Simulink的数字音效研究  论文
双击自动滚屏 文章来源:   发布者:jsjlw99   发布时间:2009/7/8 16:45:16   阅读:2189
摘要
 
 
介绍数字音效的概念,如何用DSP的数字信号处理功能来实现数字音效。介绍了DSP的产生、发展和目前的研究进展以及DSP在数字音效处理方面的应用,通过DSP与GPP的比较,讨论了DSP与GPP各自的特点以及DSP在数字信号处理方面的优势和发展前景。介绍现在国内外DSP的研究现状与应用成效,数字滤波器的定义、分类以及实现方法。数字滤波器的工作原理以及在数字音效领域的应用,讨论IIR滤波器、FIR滤波器的设计方法。讨论如何在Simulink上实现对回声音效、合唱音效、镶边音效和混响音效这四种音效的仿真。在Simulink仿真平台上用回声音效、合唱音效和混响音效对音乐厅的声音播放效果进行模拟,并对三个模块作了分析。最后对DSP的发展作了总结和展望。
 
关键字:DSP , FIR , IIR , 数字音效 , Simulink
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Abstract
 
 
Introduce digital sound concept of result, how about realize the digital transliteration result through the way that the digital signal of DSP handles the function. Recommend production , development of DSP until present research develop and DSP punish the application of in the digital transliteration result, through DSP and comparison of GPP, discuss DSP and GPP one's own characteristic and DSP punish advantage and development prospect of respect in digital signal. Introduce the research current situation of domestic and international DSP now and employ the effect , digital wave filter definition , classification and implementation method . Operation principle of the digital wave filter and application in the field of digital sound result, discuss IIR wave filter , FIR wave filter design method. How realize to echo sound result, chorus sound result, inlay lateral result and mix resonant result four sound emulation of result these at Simulink discussion. Mix resonant result voice result of broadcast in music hall imitate with echo sound result , chorus sound result at Simulink artificial platform, and has done analysis to three pieces of module . Did the summary and looked into the distance to the development of DSP finally.
 
Key words:DSP , FIR , IIR , digital audio effect , Simulink

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