servis v2

OFDM-Chirp波形的自模糊函数和互模糊函数(The self - fuzzy and mutual - fuzzy functions of OFDM-Chirp waveform)

Antenna Theory Book djvu Shelkunoff

说明：  STM32 handbook (Rus), Real HW in real life.

以前找的ActiveX 控件帮助文件,希望大家能用得上.(ActiveX control to help)

latex thesis format persian

说明：  Lua编程入门书籍，Lua程序设计第二版（中文版）(Lua Programming Introduction Book, Lua Programming (Chinese Edition))

Julia is a high performance, high-level dynamic language designed to address the requirements of high-level numerical and scientific computing. Julia brings solutions to the complexities faced by developers while developing elegant and high performing code.

本文通过对男性和女性声音的语音特征的研究，发现男女声的基音频率存在较大的差异，并设计了基于基音频率分析的男女声识别系统。男女声识别系统由以下三个模块电路构成：话筒放大器，低通滤波器，半波整流电路，单片机测量控制模块。话筒放大器采用NE5532P音前置芯片，对语音信号进行放大；八阶低通滤波器MAX293完成基音信号的提取；单片机STC12C5410AD实现频率测量和控制输出功能。经仿真与电路实测，男女声的识别效果良好。(In this paper, the voices of male and female voice characteristics of the findings of a study of the fundamental frequency of the sound of men and women there is a big difference, and the design of frequency analysis based on the pitch of the voice recognition system for men and women. Voice Recognition System for men and women from the circuit the following three modules: the microphone amplifier, low-pass filter, half-wave rectifier circuit, single-chip measurement control module. NE5532P sound using the microphone pre-amplifier chip amplification of voice signals eight MAX293-order low-pass filter to complete the extraction of pitch signal STC12C5410AD single-chip realization of the frequency of measurement and control output. By circuit simulation and measurement, the identification of male and female voices well.)

赛门铁客 赛门铁客 赛门铁客 赛门铁客(Symantec Symantec Symantec Symantec)

TRNSYS，瞬态模拟程序，软件内置教程，第二部分(TRNSYS, a transient simulation program, the software built tutorial, Part II)