nodeinsertbeforenodeancestor

To see an spectrogram of a signal non perodical

能够见汉字转为拼音，并且速度很快，可以很好的将文字进行转化(脛脺 鹿 禄录 没 潞 潞 脳 脰 脳 陋 脦 陋 脝)

模式分类 课后练习答案 佩斯大学整理版本，每章都有（包括 7 8 9 10章） 平均20多道题，跟网内那种一章选几道的完全不一样~~谁用谁知道pattern classification(Duda pattern classification on the answer machine after-school practice exercises finishing version Pace University (New) pattern classification)

一本基于matlab的控制系统设计书籍，很详尽的介绍了如何应用matlab/simulink进行控制系统设计(A control system based on matlab books, describes in great detail how to use matlab/simulink for control system design)

Time_FFT_bandnarrow_v2.m it is a function code it has an input data.

例子关于buck的仿真，里面有simulink文件和一个绘制buck输出功率与占空比关系的matlab源文件。(About buck simulation example, which has drawn buck simulink file and a relationship between output power and duty cycle of the matlab source files.)

Converts GF entries into integers

通过输入x和输出y来估计系统的传递函数模型(Through the input x and output y to estimate the system transfer function model)

典型的多项式快速傅里叶变换程序，现在只做到三阶，为初学者提供参考。(A typical polynomial fast Fourier transform program, now only do third-order, provide a reference for beginners.)

【谷速软件编程】matlab源码-基于哈希编码图像检索 可以作为参考使用，程序是word版本 ([Valley] matlab source software programming speed- hash-coded image-based retri can be used as a reference, the program is a word version)