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nannvshengshibie
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.)
- 2009-04-12 16:23:04下载
- 积分：1
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APIandHardware
介绍如何使用系统自带的API函数访问与操作计算机硬件。(Describes how to use the system s own API function to access and operation of computer hardware.)
- 2008-12-11 13:20:45下载
- 积分：1
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我的第一本算法书
说明： 本书采用大量图片，通过详细的分步讲解，以直观、易懂的方式展现了7个数据结构和26个基础算法的基本原理。第1章介绍了链表、数组、栈等7个数据结构；从第2章到第7章，分别介绍了和排序、查找、图论、安全、聚类等相关的26个基础算法，内容涉及冒泡排序、二分查找、广度优先搜索、哈希函数、迪菲 - 赫尔曼密钥交换、k-means 算法等。
本书没有枯燥的理论和复杂的公式，而是通过大量的步骤图帮助读者加深对数据结构原理和算法执行过程的理解，便于学习和记忆。将本书作为算法入门的第一步，是非常不错的选择。(This book uses a large number of pictures, through detailed step-by-step explanation, in an intuitive and easy to understand way to show the basic principles of 7 data structures and 26 basic algorithms. Chapter 1 introduces seven data structures such as linked list, array and stack; from Chapter 2 to Chapter 7, 26 basic algorithms related to sorting, searching, graph theory, security and clustering are introduced respectively, including bubble sorting, binary searching, breadth first search, hash function, Diffie Herman key exchange, K-means algorithm, etc.
This book does not have boring theory and complex formula, but through a large number of step diagrams to help readers deepen the understanding of data structure principle and algorithm execution process, easy to learn and remember. This book as the first step of the algorithm, is a very good choice.)
- 2021-03-31 19:19:06下载
- 积分：1
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xuzheng_word
徐政MMC柔直高速仿真资料word板，网上只有pdf版，很难得的资料。(Jones MMC soft straight high-speed simulation data word, only PDF version online, very rare.)
- 2017-01-01 17:11:27下载
- 积分：1
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The-function-semaphore-takes-place
函数信号发生，能产生频率可调的方波发生电路(The function semaphore takes place)
- 2011-04-22 18:09:55下载
- 积分：1
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airoptimaztion.rar
优化理论与技术在航空领域的应用。通过分析和讨论优化理论目前在航空公司收益管理、航班优化排班、机队规划、航班实时决策调度等业务中的应用,论
述了优化理论与技术在航空公司应用的实际效益,给出了应用的主要模型及流程。同时建议了优化理论在航空领域的其他研究方向。(optimization theory and technology in the field of aviation. Through analysis and optimization theory discussed in airline revenue management, flight scheduling optimization, fleet planning, Real-time decision-making flight scheduling operations, the application of optimization theory discussed with the airlines in the practical application of effective, given application model and the main flow. Optimization also proposed the theory in the field of aviation other research.)
- 2006-09-17 12:05:22下载
- 积分：1
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2019年中国研究生数学建模竞赛E题
说明： 数学建模2019年算法(floyd)
- 2020-07-25 21:32:55下载
- 积分：1
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Cooperation-diversity-DF
协作通信系统中DF协议下的系统仿真，可以实现中断概率的分析。(DF protocol system simulation, collaborative communications system outage probability analysis.)
- 2012-04-22 10:51:59下载
- 积分：1
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20081214212315272
说明： 这是计算机网络习题答案，希望对大家有所帮助，我觉得很有用(This is a computer network problem sets, we want to help, I think very useful)
- 2010-04-06 13:26:39下载
- 积分：1
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Control Systems Engineering 7th Edition 2015
control system engineering ogata
- 2020-06-18 22:00:01下载
- 积分：1
