sinPolyfit

DETREND removes the trend from data

all possible ways of choosing k elements out of the numbers 1:n without duplications(all possible ways of choosing k elements ou not one of the numbers : n without duplications)

Otsu s method of threshold selection for image segmentation

超声相控阵仿真论文，研究了超声声束的指向性、声压等特性，以及探头设计准则。(Ultrasonic phased array simulation thesis, studies the ultra sound beam directivity, pressure characteristics, as well as the probe design criteria.)

一阶动态电路通过MATLAB中GUI模块的编程实现，并绘制相应的曲线(First-order dynamic circuit module through GUI in MATLAB programming, and draw the corresponding curve)

Energy consumption is a significant issue in ad hoc networks since mobile nodes are battery powered. In order to prolong the lifetime of ad hoc networks, it is the most critical issue to minimize the energy consumption of nodes. In this paper, we propose an energy efficient multipath routing protocol for choosing energy efficient path. This system also considers transmission power of nodes and residual energy as energy metrics in order to maximize the network lifetime and to reduce energy consumption of mobile nodes. The objective of our proposed system is to find an optimal route based on two energy metrics while choosing a route to transfer data packets. This system is implemented by using NS-2.34. Simulation results show that the proposed routing protocol with transmission power and residual energy control mode can extend the life-span of network and can achieve higher performance when compared to traditional ad-hoc on-demand multipath distance vector (AOMDV) routing protocol

msk信号调制解调过程，包括发送端及接收端信号谱分析过程。(msk signal modulation and demodulation process, including the sender and the receiver signal spectrum analysis.)

PLL的simulink仿真模型，希望能有用，谢谢大家(PLL in simulink simulation models, hoping to be useful, thank you)

implementation of ideal lowpass filter

语音中提取基音频率matlab程序语音中提取基音频率matlab程序语音中提取基音频率matlab程序语音中提取基音频率matlab程序语音中提取基音频率matlab程序语音中提取基音频率matlab程序语音中提取基音频率matlab程序(speech analysis and synthsis)