参加软件机构培训的资料，包括软件生命周期与软件架构介绍；软件架构风格；UML与面向对象程序设计；UML建模与分析；技术架构视图-设计原则与模式；软件系统坏死的症状；liskov替换原则（lsp）；接口隔离原则（ISP；依赖倒置原则（DIP）；设计模式；策略（Strategy）模式；桥接（Bridge）模式；命令（command）模式等，是老师智慧的结晶。
上传时间： 2016-12-02
上传用户：xaijhqx
介绍OO设计的基本模式和原则 面向对象的类设计原则 开放关闭原则The Open Closed Principle (OCP) Liskov 替换原则The Liskov Substitution Principle(lsp) 依赖性倒置原则The Dependency Inversion Principle (DIP)
标签： Liskov Substitutio The Principle
上传时间： 2013-12-10
上传用户：zhangyi99104144
The 4.0 kbit/s speech codec described in this paper is based on a Frequency Domain Interpolative (FDI) coding technique, which belongs to the class of prototype waveform Interpolation (PWI) coding techniques. The codec also has an integrated voice activity detector (VAD) and a noise reduction capability. The input signal is subjected to LPC analysis and the prediction residual is separated into a slowly evolving waveform (SEW) and a rapidly evolving waveform (REW) components. The SEW magnitude component is quantized using a hierarchical predictive vector quantization approach. The REW magnitude is quantized using a gain and a sub-band based shape. SEW and REW phases are derived at the decoder using a phase model, based on a transmitted measure of voice periodicity. The spectral (lsp) parameters are quantized using a combination of scalar and vector quantizers. The 4.0 kbits/s coder has an algorithmic delay of 60 ms and an estimated floating point complexity of 21.5 MIPS. The performance of this coder has been evaluated using in-house MOS tests under various conditions such as background noise. channel errors, self-tandem. and DTX mode of operation, and has been shown to be statistically equivalent to ITU-T (3.729 8 kbps codec across all conditions tested.
标签： frequency-domain interpolation performance Design kbit_s speech coder based and of
上传时间： 2018-04-08
上传用户：kilohorse
文件名称 :acad2012doc.lsp (本站不提供任何文件的下载服务) 文件大小 :31014 byte 文件类型 :text/x-lisp MD5:7e569e7c307b745a422c3abe9bc553d9 SHA1:ec63898c82aa3e837745cec5f55831cdf1f9afe2
上传时间： 2021-01-17
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