crystal01

于市售 STM32 开发板上实现特定人语音识别处理项目。识别流程是：预滤波、ADC、分帧、端点检测、预加重、加窗、特征提取、特征匹配。端点检测(VAD)采用短时幅度和短时过零率相结合。检测出有效语音后，根据人耳听觉感知特性,计算每帧语音的 Mel 频率倒谱系数(MFCC)。然后采用动态时间弯折(DTW)算法与特征模板相匹配,最终输出识别结果。先用Matlab对上述算法进行仿真，经数次试验求得算法内所需各系数的最优值。而后将算法移植到 STM32 开发板上，移植过程中根据 STM32 上存储空间相对较小、计算能力也相对较弱的实际情况，对算法进行优化。最终完成于 STM32 微处理器上的特定人语音识别系统。(Implement speech recognition processing project in commercially available STM32 development board. Identification is the process: pre-filter, ADC, framing, endpoint detection, pre-emphasis, windowing, feature extraction, feature matching. Endpoint detection (VAD) short-time amplitude and short-term zero rate combined. After detecting an effective voice, according to the characteristics of human auditory perception, calculated for each frame of speech Mel Frequency Cepstral Coefficients (MFCC). Then dynamic time warping (DTW) algorithm and feature template matches the final output recognition result. First with Matlab simulation algorithm described above, after several trials to get the optimal value of each coefficient within the desired algorithm. The algorithm will migrate to STM32 development board, the porting process according to the STM32 relatively small storage space, computing power is relatively weak situation of the optimization algorithm. Finally completed on the STM32 micr)

关于移动温度载荷，这里是它的瞬态分析的ansys例子，大家共同进步(a program for moving temperature in ansys)

atmega128 的相关例子，有led灯，ＡＤ采集等相关的程序．(Several examples ATmega_128_ common procedures, such as light water ad)

松瀚SN8P2501D在果汁机的产品开始程序实例，已经投入实际生产(Sonix SN8P2501D in the fruit juice machine to start the program example, has been put into actual production)

STM32 MAX485 example code.

220V交流输入、48V输出直流输出AC/DC直流开关电源变换器，最大容量试验过5kW( 参与世界杯答题，赢iPad mini！ 看最地道的世界杯球赛，怎能不学几句葡萄牙语？ 你知道百度翻译+世界杯=100 中奖吗？ FIFA的中文是什么意思？快来参与答题吧！ 为了让大家看世界杯，百度翻译都上线葡萄牙语啦！ 220V交流输入、48V输出直流输出AC/DC直流开关电源变换器，最大容量试验过5kW 220V交流输入、48V输出直流输出AC/DC直流开关电源变换器，最大容量试验过5kW ON划词翻译ON实时翻译 220V AC input, 48V output DC output AC/DC DC switching power converter, the maximum capacity tests of the 5kW )

AT24C256的初始化代码，已经完全经过调试，用C51驱动的(AT24C256 initialization code has been completely after debugging, using C51-driven)

说明：  包含了PIC单片机的经典模块的例程，与LCD显示屏配合工作。可供单片机新手进行使用学习。(It contains the routines of each classic module of pic32mx220, which can be used and studied by novice.)

单片机入门的40个实验.rar........(40 entry single-chip experiment. Rar ........)

心率采样电路，包括原理图，PCB单路及相关说明(Heart rate sampling circuit, including schematic, PCB single)