这是关于音频G.7xx系列的编解码程序。其中包含了G.711,G.723

英文版G.729语音压缩标准。 GENERAL ASPECTS OF DIGITAL TRANSMISSION SYSTEMS CODING OF SPEECH AT 8 kbit/s USING CONJUGATE-STRUCTURE ALGEBRAIC-CODE-EXCITED LINEAR-PREDICTION (CS-ACELP)-The English version of G.729 voice compression standards. GENERAL ASPECTS OF DIGITAL TRANSMISSIONSYSTEMSCODING OF SPEECH AT 8 kbit/sUSING CONJUGATE-STRUCTUREALGEBRAIC-CODE-EXCITEDLINEAR-PREDICTION (CS-ACELP)

语音信号处理工具包，是日本的一个大学开发的，对于HMM模型的建立很有帮助。-A tool box of speech processing, exploited by a Japanese university. It s quite helpful for setting up a HMM model.

SoundRuler是一个用来分析和图形化重复声音的工具(生物声学)。它识别和测量文件中每种声音的时间和光谱属性。执行的结果可以保存到电子数据表，也可以导出波形图。-SoundRuler is uses for to analyze and the graph repetition sound tool (biological acoustics). It distinguishes and surveys in the document each kind of sound time and the spectrum attribute. The execution result may preserve the electronic data sheet, also may derive the oscillogram.

用matlab编程来实现，用HMM模型进行孤立词的语音识别-using Matlab programming to achieve with HMM term isolation of Speech Recognition

包含G723 G729 Gsm iLBC PCM音频编码的动态库-Containing G723 G729 Gsm iLBC PCM audio coding dynamic database

语音信号的频域处理,语音虽然是一个时变、非平稳的随机过程。但在短时间内可近似看作是平稳的。因此如果能从带噪语音的短时谱中估计出“纯净”语音的短时谱，即可达到语音增强的目的。由于噪声也是随机过程，因此这种估计只能建立在统计模型基础上。利用人耳感知对语音频谱分量的相位不敏感的特性，这类语音增强算法主要针对短时谱的幅度估计。 -voice signals in the frequency domain processing, voice is a time-varying, nonstationary random process. But in a short period of time can be approximated as smooth. So if Noisy Speech from the short-term spectrum estimate "pure" voice of the short-term spectrum, and reached speech enhancement purposes. As the noise is random process, which can only be estimated based on statistical models based on. Use ear perception of voice spectrum component of the phase sensitive to the characteristics of such speech enhancement algorithms targeted at the rate of short-term spectral estimation.

一个简易的端点检测程序，已经实现，包括基于过零率、短时能量的双门限判决方法。-a simple endpoint detection procedures has been achieved, including on the basis of zero rate Short-term dual energy threshold judgment method.

用vc编的用于语音的频谱的检测，可以显示语音的频谱图。-It is used to detect spectral of speech and display the spectralgram.

一个改进后的VQ语音识别代码 自己编写和改进的 感觉效果还不错-An improved speech recognition VQ code I have written and improve the feeling of the effect of good

具有浮点指令的g.729语音压缩编码，符合ITU-T G.729 Annex C 规范，通过修改makefile可以支持windows/linux/solaris等操作系统，仅需要很少的更改就可以应用到voip领域-With floating-point instructions G.729 voice compression coding, in line with the ITU-T G.729 Annex C specification by modifying the makefile to support windows/linux/solaris and other operating systems, only a small change on the field can be applied to voip