本科生毕业论文（设计）
数字音频均衡器设计
The design of digital audio equalizer
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目 录
摘 要······································································································· 1 ABSTRACT ································································································ 2 1 前言······································································································· 3 2设计原理 ································································································· 5 2.1均衡器分类 ························································································ 5 2.2数字滤波器 ························································································ 6 2.2.1数字滤波器的原理简介 ···································································· 6 2.2.2 FIR与IIR滤波器的比较与选择 ························································ 7 2.2.3 IIR数字滤波器的设计方法 ······························································ 7 2.3均衡器的原理 ····················································································· 7 2.4 软件设计 ··························································································· 8 2.4.1 数据流图 ····················································································· 8 2.4.2 模块划分 ····················································································· 9 3软件实现 ································································································ 10 3.1界面设计··························································································· 10 3.2均衡器模块的实现 ·············································································· 11 3.3 Filter函数 ························································································· 12 3.4 实时显示的实现 ················································································· 12 4运行实例与实验分析 ················································································· 14 4.1运行实例··························································································· 14 4.2 实验分析 ·························································································· 17 5．总结与展望 ··························································································· 18 5.1总结 ································································································· 18 5.2展望 ································································································· 18 参考文献 ·································································································· 19 致 谢······································································································ 20 附录 ········································································································· 21
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摘 要
MATLAB 的应用范围非常广，包括信号和图像处理、通讯、控制系统设计、测试和测量、财务建模和分析以及计算生物学等众多应用领域。附加的工具箱（单独提供的专用 MATLAB 函数集）扩展了 MATLAB 环境，以解决这些应用领域内特定类型的问题。通过Matlab强大的信号仿真功能，分析数字音频均衡器的设计要求，对各种数字音频信号进行滤波处理，设计出一种比较合理的数字均衡器，最后对该数字均衡器进行综合测试并改进，使其达到要求的指标。
关键词：均衡器；MATLAB；数字滤波器；
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ABSTRACT
MATLAB is very wide range of applications, including signal and image processing, communications, control system design, test and measurement, financial modeling and analysis, and computational biology and many other applications. Toolbox additional (separate MATLAB function provided by a dedicated set) extends the MATLAB environment to solve these applications within a specific type of problem.Through a strong signal simulation capabilities, a kind of reasonable digital equalizer has been designed by analysising the design requirements of digital equalizers and makig filtering deal to a variety of digital equalizers. At last, the standard has been reached after the integrated test and improvement for this digital equalizer.
Key words: Equalizer;MATLAB;Digital filter；
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