Description: 本 文 首先 介绍了语音识别的研究和发展状况，然后循着语音识别系统的
处理过程，介绍了语音识别的各个步骤，并对每个步骤可用的几种方法在实
验基础上进行了分析对比。研究了语音信号的预处理和特征参数提取，包括
语音信号的数字化、分帧加窗、预加重滤波、端点检测及时域特征向量和变
换域特征向量.其中端点检测采用双门限法.通过实验比对特征参数的选取，
采用12阶线性预测倒谱系数作为识别参数。详细分析了特定人孤立词识别算
法，选定动态时间弯折为识别算法，并重点介绍其设计实现。
在 Vi su alC++环境下，设计并实现一个特定人、孤立词语音识别系统，
系统可以识别数字0-9等简单指令。该系统还具备演示、学习功能，可以演
示语音处理的各个步骤，还可以根据需要添加新的指令。
最 后 ， 重点从端点检测算法和动态时间弯折识别算法对系统进行改进。
实验表明，改进后的系统识别率有很大提高，达到95 ，为进一步开发实用
性语音识别系统产品打下了基础。-This article introduced the first speech recognition research and development, and then follow the voice recognition system
Processing, speech recognition, introduced the various steps, each step of the methods available in the real
A post-mortem conducted on the basis of the analysis and comparison. Research on the speech signal pre-processing and feature extraction, including
Digitized voice signals, sub-frame window, pre-emphasis filtering, endpoint detection feature vector in time domain and variable
Eigenvector for the domain. One endpoint detection method using dual-threshold. Through experiments over the selection of characteristic parameters,
The use of 12-order linear prediction cepstral coefficients as recognition parameters. Detailed analysis of the specific operator who isolated word recognition
Law, selected Dynamic Time Warping Algorithm for identifying and focusing on the achievement of its design.
In Vi su alC++ environment, design and realization of a s Platform: |
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Author:周文超 |
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Description: 语音信号处理前的预处理部分，包括预加重，分frame，加窗，是语音信号编程入门的一个很好的参考程序-Speech signal processing part of the pre-pre-treatment, including pre-emphasis, sub-frame, plus window, the speech signal a good entry-programming reference procedures Platform: |
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Author:张阳 |
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Description: 对录音信号集 中的某一语音，利用BATLAB设计一美尔例谱算法，并实现。
取信号集 中的一个语音信号：“xxxxxx”，将它作为输入的语音信号来为设计一个美尔倒谱算法，在该算法中，主要设计了以下环节：
1.读入一个语音信号；2.对这个信号归一化；3.对归一化的信号进行加窗处理（这里的矩形窗长度必须为257，重帧长64）；4.进行预加重处理，即通过一个高通滤波器： ；5进行512点的FFT；6.分别取模平方得到功率谱；7.在设计的mel滤波器组中，我采用了25个带通滤波器；8.将得到的功率谱信号通过mel滤波器组，得到相应的25个功率值；9.对这些功率值取自然对数；10.对这些值取离散作弦变换；11.将得到的值去掉直流分量，取其它值作为MFCC参数。
-Concentrated on recording a voice signal, using BATLAB designed Mayer cases spectral algorithm, and implementation.
Get a voice signal signal focus: "xxxxxx", will it as input for the design of a voice signal to Mel Cepstrum algorithm in the algorithm, the main design of the following links:
1. Read a speech signal 2. On the signal normalized 3. Of the normalized windowed signal processing (here, rectangular window length must be 257, re-frame size 64) 4. For Pre-emphasis processing through a high-pass filter: 5 for 512 points of FFT 6. modulo square were obtained spectrum 7. in the design of mel filter banks, I use a 25 band-pass filter 8 . will be the power spectrum signal by mel filter bank, corresponding to the 25 power values 9. on the power to take the natural logarithm value 10. to take these values as strings of discrete transform 11. will be of value to out DC component, to take other values as MFCC parameters. Platform: |
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Author:赵欣 |
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Description: 本代码实现语音信号的特征提取功能，包含预加重，加窗，DFT变换，设置滤波器组，计算每隔滤波器输出，求取MFCC系数的全过程-The code feature extraction of speech signal features, including pre-emphasis, windowing, DFT transform, set the filter to calculate every filter output, to strike the entire process of MFCC coefficients Platform: |
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Author:kobee |
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Description: 对语音信号进行分析时需要先进行预加重处理，起到提升高频的作用。-The speech signal analysis needs to first conduct a pre-emphasis process, to enhance the role of high frequency.
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Author:禾 |
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Description: 语音信号的分帧加窗的matlab实现及语音信号处理预加重、加窗分帧matlab程序-Sub-frame window of the speech signal and speech signal processing matlab to achieve pre-emphasis, adding windows framing matlab program Platform: |
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Author:卓鹏 |
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Description: 对语音信号的预加重，实现了高频的提升的matlab程序-Pre-emphasis of speech signal, realized the high frequency of the matlab program of ascension Platform: |
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Author:zandanfei |
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Description: 用MATLAB编写语音信号，语音信号的处理包括预加重，滤波等，这是岁随机信号进行了一个讲解-Write the speech signal with MATLAB, speech signal processing, including pre-emphasis, filtering, etc. This is the age of a random signal was explained Platform: |
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Author:苏维文 |
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Description: 语音信号的分析及前期的预处理，包括语音信号的一些特征；预处理包括前期的预滤波、小波降噪、预加重、加窗分帧、语音端点检测。-Speech signal analysis and pre processing, including some of the features of the speech signal preprocessing including pre filtering, wavelet noise reduction, pre emphasis, plus window framing, voice endpoint detection. Platform: |
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Author:TZY |
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Description: 本文根据孤立词语音识别系统的处理步骤，从语音信号的预处理开始，分别详细说明了每个过程，比如预加重、分帧加窗和端点检测。接着介绍了特征参数MFCC的原理与选取，最后介绍了DTW算法的特点-In this paper, based on the process steps of isolated words speech recognition technology, starting with the speech signal pre-processing, each process is described in detail such as pre-emphasis, add window frame and endpoint detection. then the theory and selection of the feature parameters are introduced, finally, I introduced the characteristics of the DTW algorithm. Platform: |
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Author:葛锦涛 |
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Search - pre- emphasis of speech signal