myfft是一个自编matlab函数，将输入的采样频率个采样点数建立一个数据库后，取出表中的数据进行fft分析，绘制出时频波形进行比较分析-myfft self Matlab is a function of the input sampling frequency of 000 sampling points after the establishment of a database and extract table data fft analysis, time-frequency map

matlab的常用数据库表，另外还有一些个人搜集的数据库资料-matlab commonly used database tables, plus some personal information collected by the database

matlab与数据库连接，选取数据库中的目标红外谱图，提取其波峰，并把波峰值返回到数据库中，存入新建的表中-matlab with the database connection, select the target database, infrared spectrum, extraction of the crest and the wave peak to return to the database, into the new table