检索结果-内蒙古大学图书馆

您好，读者！请登录

内蒙古大学图书馆

首页
概况
党建
资源
服务
科研支持
- 论文收录引用证明
- 科技查新
知识产权
档案馆
帮助

咨询与建议

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

您的常用邮箱：*

您的手机号码：*

问题描述：

当前已输入0个字，您还可以输入200个字

全部搜索
期刊论文
图书
学位论文
标准
纸本馆藏
外文资源发现
数据库导航
超星发现

高级检索

时间限定

出版年份：

文献类型

图书期刊文献学位论文多媒体

馆藏选择

电子馆藏纸本馆藏

核心期刊

全部期刊 SCI 收录期刊 SSCI 收录期刊 EI 收录期刊 CSCD 收录期刊 CSSCI 收录期刊

语言

中文英文

文献类型

期刊文献图书学位论文标准纸本馆藏

帮助

文字说明：

T=题名（书名、题名），A=作者（责任者），K=主题词，P=出版物名称，PU=出版社名称，O=机构（作者单位、学位授予单位、专利申请人），L=中图分类号，C=学科分类号，U=全部字段，Y=年（出版发行年、学位年度、标准发布年）

检索规则说明：

AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：

范例一：(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二：P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016

分类表

所选分类

>> <<

限定检索结果

文献类型

2,046 篇 会议
407 篇 期刊文献
4 篇 学位论文
1 册 图书

馆藏范围

2,458 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

602 篇 工学
- 443 篇 电气工程
- 131 篇 计算机科学与技术...
- 108 篇 信息与通信工程
- 79 篇 电子科学与技术（可...
- 24 篇 软件工程
- 23 篇 生物医学工程（可授...
- 21 篇 控制科学与工程
- 19 篇 仪器科学与技术
- 7 篇 机械工程
- 7 篇 船舶与海洋工程
- 5 篇 材料科学与工程（可...
- 4 篇 交通运输工程
- 3 篇 力学（可授工学、理...
- 3 篇 测绘科学与技术
- 3 篇 石油与天然气工程
- 3 篇 网络空间安全
- 2 篇 光学工程
235 篇 理学
- 204 篇 物理学
- 16 篇 系统科学
- 14 篇 生物学
- 4 篇 数学
- 3 篇 化学
- 2 篇 地球物理学
- 2 篇 统计学（可授理学、...
52 篇 医学
- 43 篇 临床医学
- 10 篇 特种医学
- 5 篇 基础医学(可授医学...
14 篇 管理学
- 14 篇 管理科学与工程(可...
10 篇 文学
- 5 篇 外国语言文学
- 2 篇 新闻传播学
3 篇 农学
3 篇 军事学
2 篇 教育学
2 篇 艺术学
1 篇 法学

主题

2,458 篇 linear predictiv...
771 篇 speech coding
701 篇 speech analysis
545 篇 speech synthesis
409 篇 bit rate
402 篇 speech recogniti...
347 篇 speech processin...
323 篇 filters
278 篇 frequency
267 篇 testing
252 篇 vocoders
238 篇 vector quantizat...
236 篇 speech enhanceme...
224 篇 quantization
213 篇 predictive model...
201 篇 signal processin...
182 篇 speech
182 篇 cepstral analysi...
179 篇 signal synthesis
177 篇 signal analysis

机构

32 篇 school of electr...
23 篇 at and t bell la...
22 篇 bolt beranek and...
19 篇 bell laboratorie...
11 篇 at and t bell la...
10 篇 naval research l...
10 篇 department of el...
10 篇 ntt human interf...
10 篇 lpcs enserg gren...
9 篇 lpcs-enserg gren...
8 篇 centre for commu...
8 篇 signal technolog...
8 篇 department of el...
8 篇 cselt torino
8 篇 acoustics resear...
7 篇 electrical engin...
7 篇 acoustics resear...
7 篇 comsat laborator...
7 篇 central research...
7 篇 inrs-télécommuni...

作者

19 篇 s. cristoloveanu
18 篇 l. rabiner
14 篇 a.m. kondoz
14 篇 j. makhoul
13 篇 t. barnwell
13 篇 p. mermelstein
12 篇 t. moriya
12 篇 b. atal
12 篇 a. gersho
12 篇 p. hedelin
11 篇 g. ghibaudo
11 篇 gray rm
10 篇 a. rosenberg
10 篇 rabiner lr
10 篇 k. ozawa
9 篇 t.p. barnwell
9 篇 p. kabal
9 篇 a. mccree
9 篇 b.g. evans
8 篇 v. viswanathan

语言

2,284 篇 英文
167 篇 其他
4 篇 中文
3 篇 土耳其文

检索条件"主题词=linear predictive coding"

共 2458 条记录，以下是281-290 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

Optimization-quantization for least squares estimates and its application for lossless audio compression

Optimization-quantization for least squares estimates and it...

引用

International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Florin Ghido Ioan Tabus Institute of Signal Processing Tampere University of Technology Finland

In this paper we study the problem of optimally quantizing the least square estimates and we introduce a method where the quantized estimate vector is obtained by a sequence of interleaved optimization-quantization scalar stages. We show how the general approach can be reduced to a simple and efficient algorithm when connecting it to the LDL T solver for general LS problems. The application to quantization of the linear prediction coefficients for audio lossless coding reveals the high performance of the approach, leading to topmost performance in the class of frame based audio coders, surpassing significantly the performance of the current MPEG4-ALS standard.

关键词： Least squares approximation Audio compression Quantization Vectors Performance loss linear predictive coding Optimization methods Transform coding Code standards Least squares methods

来源：评论

学校读者我要写书评

暂无评论

Online programmable wireless sensor node for testing purpose

Online programmable wireless sensor node for testing purpose

引用

International Symposium on Electronics in Marine (ELMAR)

作者： Marko Malajner Karl Benkic Zarko Cucej FERI University of Maribor Maribor Slovenia FERI University of Maribor Maribor

ISBN: (纸本)9781424433643

This article describes the development of an online programmable wireless sensor node. The motivation is to develop a sensor node whose firmware can be upgraded online in wireless sensor network, i.e. the sensor node can be reprogrammed, when it is already deployed in the network. Secondly, we present our hardware design for a sensor node and how online programming.

关键词： Wireless sensor networks Testing Microcontrollers Microprogramming linear predictive coding Sensor phenomena and characterization Hardware Protocols Temperature sensors Sensor systems

来源：评论

学校读者我要写书评

暂无评论

Distinguishing depression and suicidal risk in men using GMM based frequency contents of affective vocal tract response

Distinguishing depression and suicidal risk in men using GMM...

引用

International Conference on Control, Automation and Systems ( ICCAS)

作者： Thaweesak Yingthawornsuk Richard G. Shiavi King Mongkut's University of Technology Thonburi Bangkok Thailand Department of Electrical Engineering and Computer Science Vanderbilt University Nashville TN USA

Two types of speech recording collected from three groups of male subjects clinically diagnosed with depression, remission from depression, and suicidal potential were analyzed and investigated for their acoustic features derived from sub-band energy over 0-2 KHz and GMM-based spectrum of the vocal tract response. Spontaneous and text-reading speech samples characterized by different vocal features revealed significant between-class separation power. Especially, features extracted from the reading speech seemed to provide more separability between classes than those of the spontaneous speech. Additionally, high classification accuracy confirmed that the studied features were capable of distinguishing groups of different diagnostic subjects efficiently. In classifying depressed/suicidal subjects the correct score of classification was at 88.5% for features extracted from reading speech samples, while 85.58% was found from classifying spontaneous speech features. These results were considered to be fairly high in classification performance, which is supportive of the promising ability to distinguish two diagnostic groups whose speech samples changed in their acoustic properties and correlated of serious mental states, known as vocal affects. Our findings suggested some clues in diagnosis of psychiatric disorders for psychiatrist.

关键词： Speech analysis Psychology linear predictive coding Feature extraction Frequency estimation Loudspeakers Control systems Automation Biomedical engineering Risk analysis

来源：评论

学校读者我要写书评

暂无评论

Speech Enhancement Using Spatial Processing and Modified Excitation Source for Underwater Speech Communication

Speech Enhancement Using Spatial Processing and Modified Exc...

引用

IEEE/IFIP International Conference on Embedded and Ubiquitous Computing, EUC

作者： Hyung-jun Ju Se-young Kim Jung-woo Han Ki-man Kim Seok-yeb Kang Department of Radio Communication Engineering Korea Maritime University Busan South Korea

In this paper, we propose new dereverberation method for underwater speech communication. The speech signal generated by a fixed one source. Then the signal received on 9 horizontal sensor array in shallow water environment. Finally, received signals are processed dereverberation. The received signals achieved delay-and-sum beamforming and then, signals calculates time delay both each signals. Next, we calculate Hilbert envelope using time delay information and LP residuals. At last, we acquire new LP residual combination using various parameters. Proposed technique shows better performance than previous dereverberation technique.

关键词： Speech enhancement Oral communication Delay effects Array signal processing Additive noise linear predictive coding Sensor arrays Microphones Log periodic antennas Underwater acoustics

来源：评论

学校读者我要写书评

暂无评论

Fast Dereverberation for Hands-Free Speech Recognition

Fast Dereverberation for Hands-Free Speech Recognition

引用

Hands-Free Speech Communication and Microphone Arrays, HSCMA

作者： Randy Gomez Jani Even Hiroshi Saruwatari Kiyohiro Shikano ACCMS Kyoto University Kyoto Japan Graduate School of Information Science NAIST Japan

A robust dereverberation technique for real-time hands-free speech recognition application is proposed. Real-time implementation is made possible by avoiding time-consuming blind estimation. Instead, we use the impulse response by effectively identifying the late reflection components of it. Using this information, together with the concept of Spectral Subtraction (SS), we were able to remove the effects of the late reflection of the reverberant signal. After dereverberation, only the effects of the early component is left and used as input to the recognizer. In this method, multi-band SS is used in order to compensate for the error arising from approximation. We also introduced a training strategy to optimize the values of the multi-band coefficients to minimize the error.

关键词： Speech recognition Reflection Reverberation linear predictive coding Robustness Microphone arrays Hidden Markov models Information science Automatic speech recognition Signal processing

来源：评论

学校读者我要写书评

暂无评论

Efficient production technology for microcrystalline silicon solar cells using a Localized Plasma Confinement (LPC) CVD method

Efficient production technology for microcrystalline silicon...

引用

2008 33rd IEEE Photovoltaic Specialists Conference

作者： Toshie Kunii Kazuya Murata Mitsuhiro Matsumoto Kunihiro Kawamoto Yasutaka Kobayashi Youichirou Aya Makoto Nakagawa Akira Terakawa Makoto Tanaka Advanced Energy Research Center SANYO Electric Company Limited Kobe Hyogo Japan

A very high deposition rate for high-quality microcrystalline silicon (μc-Si) films has been achieved under very high-pressure conditions (≫ 1,000 Pa) using a Localized Plasma Confinement (LPC)-CVD method which has a special cathode. The uniformity of the μc-Si film thickness was 2.4% on a 55×65 cm 2 glass substrate with a deposition rate of 2.7 nm/s. We also achieved maximum conversion efficiency of 11.4% for an a-Si/μc-Si tandem solar cell (1 cm 2 ) on a 20×20 cm 2 glass substrate and average conversion efficiency of 9.84% for a-Si/μc-Si tandem solar cells (1 cm 2 ) on a 55×65 cm 2 glass substrate with a deposition rate (Rd) of 1.8 nm/s. These results indicate that LPC-CVD method is a good candidate as an effective production technology for large-area, high-performance μc-Si thin-film solar cells.

关键词： Production Silicon Photovoltaic cells Plasma confinement linear predictive coding Glass Substrates Semiconductor films Cathodes Transistors

来源：评论

学校读者我要写书评

暂无评论

Voice Activity Detection Using Entropy in Spectrum Domain

Voice Activity Detection Using Entropy in Spectrum Domain

引用

Australasian Telecommunication Networks and Applications Conference, ATNAC

作者： Meysam Asgari Abolghasem Sayadian Mohsen Farhadloo Elahe abouie Mehrizi Department of Electrical Engineering Amirkabir University of Technology슠 Tehran Iran Department of Biomedical and Computer Engineering University of Binningham Birmingham UK

In this paper we develop a voice activity detection algorithm based on entropy estimation of magnitude spectrum. In addition, the likelihood ratio test (LRT) is employed to determine a threshold to separate of speech segments from non-speech segments. The distributions of entropy magnitude of clean speech and noise signal are assumed to be Gaussian. The application of the concept of entropy to the speech detection problem is based on the assumption that the signal spectrum is more organized during speech segments than during noise segments. One of the main advantages of this method is that it is not very sensitive to the changes of noise level. Our simulation results show that the entropy based VAD is high performance in low signal to noise ratio (SNR) conditions (SNR < 0 dB).

关键词： Entropy Speech enhancement Speech coding Testing Light rail systems Signal to noise ratio Bandwidth Bit rate Radio frequency linear predictive coding

来源：评论

学校读者我要写书评

暂无评论

Doppler-variant modeling of the vocal tract

Doppler-variant modeling of the vocal tract

引用

International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Axel Heim Uli Sorger Florian Hug Institute of Telecommunications and Applied Information Theory Ulm University Germany Computer Science and Communications University of Luxembourg Luxembourg

A common technique to deploy linear prediction to non-stationary signals is time segmentation and local analysis. Variations of a process within such a segment cause inaccuracies. In this paper, we model the temporal changes of linear prediction coefficients (LPCs) as a Fourier series. We obtain a compact description of the vocal tract model limited by the predictor order and the maximum Doppler frequency. Filter stability is guaranteed by all-pass filtering, deploying the human ear's insensitivity to absolute phase. The periodicity constraint induced by the Fourier series is counteracted by oversampling in the Doppler domain. With this approach, the number of coefficients required for the vocal tract modeling is significantly reduced compared to a LPC system with block-wise adaptation while exceeding its prediction gain. As a by-product it is found that the Doppler frequency of the vocal tract is in the order of 10 Hz. A generalization of the algorithm to an auto-regressive moving average model with time-correlated filter coefficients is straight forward.

关键词： linear predictive coding predictive models Fourier series Filters Frequency Speech coding Speech processing Shape Entropy Information theory

来源：评论

学校读者我要写书评

暂无评论

Target Feature Extraction for Passive Sonar Based on Two Cepstrums

Target Feature Extraction for Passive Sonar Based on Two Cep...

引用

International Conference on Bioinformatics and Biomedical Engineering (ICBBE)

作者： Geming Liu Chao Sun Yixin Yang Engineering Acoustics Institute Northwestern Polytechnical University Xi'an China

A passive sonar target can be regarded as a sounder from the viewpoint of sonar operators. The impulse response of the sounder in the cepstrum domain, which shows physical features of targets, can be obtained from the radiated-noise of targets using LPC cepstrum and Mel cepstrum. A set of cepstrum-domain features is extracted based on the above two cepstrums of the impulse response. The neural network target classifier was designed using cepstrum-domain features. The classification experiments were carried out for three different kinds of targets based on practical data. The experimental results show that the feature extraction method based on two cepstrums are useful.

关键词： Feature extraction Sonar Cepstrum Acoustic noise Time domain analysis Target recognition linear predictive coding Noise shaping Acoustical engineering Data mining

来源：评论

学校读者我要写书评

暂无评论

Age Bracket Judgment by LPC Spectrum Inclination of Voice: Comparing with Detection of Pitch Alternation / Formant Q in the Vowel Term

Age Bracket Judgment by LPC Spectrum Inclination of Voice: C...

引用

International Symposium on Knowledge Acquisition and Modeling, KAM

作者： Kazuhide Okada Vehicle Control System Development Department Higashi-Fuji Technical Center Toyota Motor Corporation Susono Shizuoka Japan

If it is known the said person is the young or old, when we make persons utter the same vocabulary, it is possible to guide only old man kindly and repeatedly by speech synthesis and otherwise to give only young generation the cautious voice toward their own reckless action by mosquito sound after its detection as application. We observed the alternation of the pitch, Formant Q which means power steepness at formant frequency on Spectrum, and inclination of LPC Spectrum in order to realize its *** its result we could know the inclination of LPC Spectrum of young generation becomes steeper toward the low frequency compared with that of old one clearly, in spite that it is uncertain that change of the number of the vibration at the vocal cords is big or small and steep or gentle power mountain exist at the 1st formant frequency in correspondence with the generation. In fact when the inclination of LPC Spectrum is used as feature parameter, the average recognition ratio toward an age bracket was 88.8%, besides when change of pitch or Formant Q was used, its ratio is under 60%.

关键词： linear predictive coding Frequency Face detection Vehicle detection Power generation Pediatrics Knowledge acquisition Vehicles Control system synthesis Electronic mail

来源：评论

学校读者我要写书评

暂无评论

没有更多数据了...

全选清除本页清除全部题录导出标记到“检索档案”

共246页 << < 25 26 27 28 29 30 31 32 33 34 > >>

检索报告对象比较合并检索0

隐藏清空

合并搜索

回到顶部

执行限定条件

内容：

评分：

请选择保存的检索档案：

请选择收藏分类：

订阅名称：

通借通还

温馨提示：

图书名称：

借书校区：

取书校区：

手机号码：

邮箱地址：

一卡通帐号：

电话和邮箱必须正确填写，我们会与您联系确认。

联系人：

所在院系：

联系邮箱：

联系电话：

内蒙古自治区呼和浩特市赛罕区大学西街235号邮编: 010021

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：