凌阳单片机语音范例使用凌阳单片机的多命令语音识别范例

简单的基于门限值的语音端点检测。先将数字化的语音信号封装成帧，利用最大的帧幅值乘以一个比例因子得到门限值-Simple threshold-based voice end point detection. First，framing the digital voice signal , then using the maximum amplitude to multiply a frame scale factor to get threshold

语音信号的G.711编码。 The source code has been modified by simplifying the ADPCM algorithm to increase running speed. Here, the quantizer scale factor, y(k), is determined by "unlocked" factor yu(k) only. The factor yl(k) and speed-contral factor al(k) are ignored.-G.711 speech signal coding. The source code has been modified by simplifying the ADPCM algorithm to increase running speed. Here, the Quantizer scale factor, y (k), is determined by "unlocked" factor yu (k) only. The factor yl (k) and speed- al contral factor (k) are ignored.

ITU-T音频格式编解码代码，包括：G.711 G.721 G.723, 其中G723还支持16kbit/s 24kbit/s 40kbit/s几种码率。g72x.h g711.h是共用的头文件。-These are ITU-T speech codecs,include G.711 G.721 G.723,and G.723 also supports 16kbit/s 24kbit/s 40kbit/s. g72x.h and g711.h are common head files.

为了实现高速语音特征参数的提取，在分析了美尔频率倒谱特征参数提取算法的基础上，提出了算法的硬件 设计方案，介绍了各模块的设计原理。该方案增加了语音激活检测功能，可对语音信号中的噪音帧进行检测，提高了特征参 数的可靠性。-In order to achieve high-speed voice characteristic parameter extraction, in the analysis of Mel frequency cepstral feature extraction algorithm is proposed based on the algorithm the hardware Design, describes the design principles of each module. The program increased the Voice Activity Detection feature, which allows voice signals to detect the noise frame to improve the characteristic parameters The number of reliability.

语音编码的原程序,是在国外的网站下来的,没有改动可以直接在软电话下使用!-speech coding the original procedure is outside the site down, no changes may be directly in the use of soft phone!

用MATLAB采集和播放一段（5s长，采样率为8k，每个样本位数8位）的语音信号。-Collection and use MATLAB for some players (5s long, sampling rate of 8k, each sample median 8) of the voice signal.

用于汉语语调识别的程序，可以识别我们说话中的四个声调。已通过测试-Chinese tone recognition for the program, has been tested

其中大部分采用voicebox库中的函数，需要把voicebox添加到路径中。 模板在测试程序中共有5个，通过i进行设定，命名原则：数字a，如1a 被测试对象一个，命名原则：数字b，如1b 测试程序为dtwTest 其他的都是一些函数原型，包括 dtw MFCC enframe vad

LPC speech compression-LPC speech compression...

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