H2

语音识别，基于DTW算法的语音识别原理与实现，包含源程序，MATLAB(Speech recognition, speech recognition algorithm based on DTW Principle and Implementation, including source code, MATLAB)

调制识别是非协作通信中的关键技术之一，在电子对抗、软件无线电等领域 应用十分广泛。该过程介于信号检测与解调之间，由于对传输信号没有过多的先 验信息以及在接收端有很多未知的参数，例如：信号功率，载波频率和相位偏移， 时间信息等，导致对调制方式的盲识别是一项很困难的任务。此外，实际中存在 多径衰落、频率选择性和时变信道等问题，使得这项任务变得更具有挑战性。 (The modulation recognition is one of the key technologies of the non-cooperative communication, such as electronic countermeasures and software defination radio, therefore it is such a significant discipline and orientation in the research of communication field. Obviously, without enough knowledge in transmitter and verified parameters about receivers, for example signal power, carrier frequency and phase offsets and so force, it is hard to get the modulation of blind identification. What is more, for the sake of the multipath fading, frequency-selective and time-varying channels in the real scenarios the task is even harder. )

matlab解線性方程方程組的示例 包括newton法iteration法和bisect法(linear equation matlab Examples of equations newton method iteration method and the bisect method)

序列卷积的matlab源码，包括卷积结果输出等(Sequence convolution matlab source code, including the convolution results of the output, etc.)

说明：  学习matlab的一些资料，其中是做成了PPT格式以供大家学习使用。(Some material for learning matlab which is made into PPT format with for everybody to learn to use )

Tutorial: Parallel computing toolbox for matlab.

MATHEMATICAL CODE FOR SPEECH USING MATLAB

轮廓提取的子程序,matlab编的，有注释(Profile extraction subroutine)

灰色gm(1,1)模型，当做函数可以调用，中间注释写得很详细，稍加修改即可成为灰色系统中别的算法。(Gray gm (1,1) model, as a function can call the Notes between very detailed, a little modification to the system as a gray-level algorithm.)

说明：  详细说明：语音信号的短时分析，主要包括：分帧、短时能量、短时平均幅度、短时过零率、短时自相关函数、短时幅度差、倒谱、复倒谱、lpc系数、lpc谱估计等 绝对保证质量，是保研后导师布置的一些基础程序(Details: short-time speech signal analysis, including: framing, short-term energy, short-term average rate, short-time zero crossing rate, short-time autocorrelation function, short-term magnitude difference, cepstrum, complex cepstrum, lpc coefficient, lpc absolute guarantee of the quality of spectral estimation, is the security arrangement of some of the research base after the mentor program)