MATLAB-and-VOICE

钢琴演奏评价系统研究 关键词：音乐识别特征提取 STFT 调式自动判别匹 配比较(Piano Performance Evaluation System Keywords: music recognition feature extraction STFT mode automatically identify matching comparison)

he increasing demand of networks, over the past decade has led to the need for enormous cost reduction and increasing accessibility of networks. It requires for efficient traffic management in the network and ability to expand as per the need. Various network design problem solutions are based on enumerative and heuristic approach have been defined in the literature.

本文对软件开发中编码作了统一的规定，除非约定发生改变，程序员必须遵守这些约定。(This paper made a unified software development code provisions, unless the agreed changes, the programmer must comply with these conventions.)

说明：  数字调制程序fsk psk dpsk各种调制的源程序 升余弦信号等(Fsk psk dpsk digital modulation process of the source of various modulation cosine signals )

设计巴特沃斯和切比雪夫滤波器，实现低通滤波，并计算滤波系数，给出效果图(Design a 20-order Butterworth filter, low-pass filter, and the filter coefficient calculation gives renderings)

由方波代替了SPWM，实现了SPWM电机调速(Replaced by a square-wave SPWM, motor speed to achieve the SPWM)

灰色理论模型GM(1,1)预测客户需求 灰色理论模型GM(1,1)预测客户需求(Grey model GM (1, 1) forecast customer demand weight trends. Docx )

分别用普通构建方式和显示列表对物体进行绘制，实现各种复杂的交互控制(Were built with ordinary ways and display a list of objects to draw, to achieve a variety of complex interactive control)

说明：  LDPC bpsk调制，测试误码率性能。很值得下载的程序(LDPC bpsk Modulation test BER performance)

改程序可以对信号进行emd分解，直接得到imf和hilbert谱(Change the program can signal emd decomposition directly from the imf and the hilbert spectrum)