利用所给的中心削波,计算自相关/AMDF代码,选取一段语音,使用Praat预估其基音周期范围,合理设置预估的极值点距离等参数,计算并画出语音的基音频率曲线
By using the given center clipping, the autocorrelation /AMDF code is calculated, a speech is selected, the range of the pitch period is estimated by Praat, the estimated distance of the extreme point is set up reasonably, and the pitch frequency curve of the speech is calculated and drawn. (2018-07-02, matlab, 78KB, 下载20次)
实验示例是基于语音中的mfcc，语音倒谱特征来进行聚类，先利用训练样本来计算训练样本聚类中心（用到了lbg算法），之后再进行分类。
注意：使用代码时需要自己更改文件路径。
This example is based on the MFCC in speech and the feature of speech Cepstrum to cluster. First, the training sample is used to calculate the training sample clustering center (using the LBG algorithm), then the classification is then carried out. (2018-04-02, matlab, 1103KB, 下载12次)
语音信号处理中，中心削波处理前后波形对比，中心削波前后修正自相关对比
In the speech signal processing, the comparison of the waveform before and after the center clipping, and the correlation correction before and after the center clipping (2017-03-05, matlab, 5KB, 下载11次)
计算语音信号的AMDF(短时平均幅度差)，基音估计(中心削波)，LBG算法的实现
Calculation of the speech signal AMDF (short time average magnitude difference), pitch estimation clipping (center), the implementation of the LBG algorithm (2015-11-20, matlab, 8KB, 下载7次)
实现男女声判别，可自动弹出窗口进行判别。用到中心削波和自相关算法
Sound discrimination between men and women, it can automatically pop-up window to discriminate. Use the center clipping and autocorrelation algorithm (2013-06-09, matlab, 4KB, 下载13次)
语音信号处理,运行结果为中心削波前后的语音波形,以及削波前后的自相关波形
voice signal processing (2013-03-18, matlab, 1KB, 下载7次)
读取语音，进行中心削波处理，可以更好的提取基音
Read the speech center clipping processing can pitch extract (2013-03-12, matlab, 1KB, 下载17次)
通过核 K- 均值聚类的方法对语音帧进行聚类 , 由于聚类的中心能够很好地代表类内的特征, 用中心样本帧取代该类, 减少了核矩阵的维数, 然后再采用稀疏 KPCA方法对核矩阵进行特征提取。
Through the nuclear K-means clustering method for clustering of speech frames, the cluster center can be a good representative of the class characteristics of the sample frame to replace the class with the center, reducing the dimension of the nuclear matrix, and then use Sparse KPCA method for feature extraction of the nuclear matrix. (2011-11-17, matlab, 181KB, 下载71次)
台湾国立中央大学开发的EMD-HHT算法,其中,EMD-HHT的创始人为该中心的主任.
EMD-HHT IS SPECIALLY DESIGNED FOR PROCESSING NONSTATIONARY AND NONLINEAR SIGNALS. IT CAN DECOMPSE SIGNALS AND THEN RECONSTRUCT SIGNALS ACCORDING TO SOME CRITERIA. AFTER THE PROCESS, SIGNALS WOULD HAVE HIGH SIGNALTO NOISE RATIO. IT HAS BEEN APPLIED TO VARIOUS TYPES OF SINALS FROM INDUSTRY AND ACHIEVED GREAT SUCCESS. IT EVOLVES FROM THREE SOURCES: FRANCE SCIENTIST G RILLING, MATLAB FILE EXCHANGE CENTRE BY MR TAN AND TAIWAN NATIONAL CENTRAL UNIVERSITY CENTRE. (2009-04-24, matlab, 1549KB, 下载329次)
针对信号自适应chirplet分解未知参数多、实现起来比较困难的特点，文献[1]提出了一种新的chirplet分解快速算法。该算法利用计算信号的二次相位函数，得到其能量分布集中于信号的调频率曲线上的结论，此时通过谱峰检测可同时获得chirplet调频率、时间中心和幅度的估计；然后通过解线性调频技术获得其初始频率和宽度的估计，仿真结果验证了本文算法的有效性。
this code includs one method for chirplet analasis,that is used in voice and ultra-wave analasys,etc. (2009-03-09, matlab, 2KB, 下载108次)