共查询到20条相似文献，搜索用时 46 毫秒
1.
基于声卡和MATLAB的语音信号采集和处理 总被引：2，自引：0，他引：2
陈宇锋 《中国现代教育装备》2006,(5):49-51,56
Matlab是一个数据分析和处理功能十分强大的工程实用软件,运用它来进行语音信号的分析、处理和可视化相当便捷,而声卡是计算机中语音信号处理的主要硬件,文章介绍了在Matlab环境中如何驱动声卡采集语音信号和语音信号采集后的文档处理方法,并通过实例分析了语音信号处理的Matlab。 相似文献
2.
随着数字信号处理的发展,语音信号领域越来越受到关注,语音信号处理是实现人机交互和通讯技术的必要方法。语音信号处理教学实验课程在国外著名大学已经得到广泛开设。本文介绍了一门最新开设的将基础知识与理论研究相结合的语音信号处理实验课程。该课程主要由一系列由浅入深的语音信号处理实验构成,通过这些实验,使学生深入理解语音信号领域的前沿知识。在自主实验环节,学生自主提出实验题目及内容,通过小组形式完整地完成一个项目的设计、开发和汇报过程。本文将一个小组的语音分离项目为例,来说明该课程不仅能够培养学生的动手和分析解决问题能力,并能激发学生对相关领域的研究兴趣。 相似文献
3.
由于电视图像包含的信息十分巨大，因此为了便于电视信号的存储和传输，需要对图像信息进行数字化和码率压缩。介绍了电视图像信号压缩编码的几种方法：降低抽样频率、差值脉冲编码、线性变换编码、离散余弦变换。 相似文献
4.
语音信号处理作为水声工程学院的专业骨干课程之一,具有很强的综合性和实用性。重点阐述了如何结合专业特色,运用声学、信号与系统以及信号处理等学科综合背景知识,研究建设具有特色的语音信号处理双语教学策略。结合双语教学实践,对教学内容设计、教学方法以及教学效果进行了分析。提出了以激发学生兴趣为导向,促进学生投入为目标的语音信号处理课程教学策略。 相似文献
5.
6.
《实验室研究与探索》2019,(9)
为了提高语音信号处理课程的教学效果,解决实时语音信号处理实验难以开展的问题,在深入探讨实时语音信号处理实验方案的基础之上,设计了基于ARM Cortex-A8的嵌入式实验平台。借助嵌入式Linux系统声音框架(Advanced Linux Sound Architecture,ALSA),该平台可以实现实时语音信号分析、增强与特征提取,帮助学生学习语音信号处理的基础知识;基于实时信号处理实验,学生可以快速面向功能进行项目式开发,提高学生的专业能力和工程能力。最后以动态语音情感识别为例,介绍了系统的硬件构成、软件框架以及算法实现。 相似文献
7.
针对斜井轨道提升系统在运行过程中跑车事故发生的频率较高的问题,为了保障井下工作人员之间、井下与井上工作人员之间可以及时地互相通信,切实保护井下工作人员的生命安全,以CAN总线作为传输线路,设计了斜井电话语音传输及设备监测自修复系统。该系统解决了现有井下模拟语音信号传输距离短、音质差的问题,传输距离可达几十千米,满足了井下传输的需求。 相似文献
8.
混合语音信号的分离是盲分离的重要内容,也是信号处理领域的一个难题。独立分量分析是一种无需知道信号的先验信号而实现信号分离的盲源分离技术,本文介绍了独立分量分析的基本理论和算法,探讨了独立分量分析在混合语音信号分离中的应用,给出了信息最大化盲源分离算法并对瞬时混合语音信号进行了盲分离仿真。实验结果表明,该方法能有效地提高运算效率并获得较好的分离效果。 相似文献
9.
《常熟理工学院学报》2017,(4)
在语音信号处理领域,端点检测作为语音信号处理的初始化工作,有效合理的端点检测方法不仅可以减少数据的存储量和处理时间,而且可以排除无声段的噪声干扰,使语音的后续处理更加准确.本文为医疗语音信号处理提供一种医院噪声环境下医疗语音信号的端点检测方法.综合采用频域下的特征倒谱距离、能量谱、能量谱方差、统计学特征谱熵值4种特征作为控制条件判断语音的端点.通过设计软件验证了算法的有效性. 相似文献
10.
11.
邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
12.
13.
Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
14.
《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
15.
YANGShiguo 《重庆大学学报(英文版)》2004,3(1):86-88
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex. 相似文献
16.
Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
17.
18.
GUO Bao-feng Xiao Da-wei 《重庆大学学报(英文版)》2005,4(3):129-133
Using virtual reality for interactive design gives a designer an intuitive vision of a design and allows the designer to achieve a viable, optimal solution in a timely manner. The article discusses the process of making the Virtual Reality System of the Humble Administrator＇s Garden. Translating building data to the Virtual Reality Modeling Language （VRML） is by far unsatisfactory. This creates a challenge for computer designers to do optimization to meet requirements. Five different approaches to optimize models have been presented in this paper. The other methods are to optimize VRML and to reduce the file size. This is done by keeping polygon counts to a minimum and by applying such techniques as object culling and level-ofdetail switching. 相似文献
19.
The awareness of individualism can be traced back to the period of American Revolution when the Declaration of Independence was produced.It expressed basic beliefs concerning freedom,equality,democracy,privacy and the relationship between people and government,which were exactly what the philosophy of individualism mostly dealt with at that time.This paper is to exploit the essence of individualism by analyzing the Declaration .The analysis enables us to reconsider its significance to the issue of America human rights and foreign policies. 相似文献
20.
Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献