中文说明：本代码是欧洲标准.edf读取程序，运行后可直接用matlab读取.edf脑电程序，进行后续滤波等处理。专门针对.edf格式的脑电数据。
English Description：
This code is the European standard. EDF reader, running can be directly read by MATLAB. EDF EEG procedures, subsequent processing such as filtering. Specifically. EDF the EEG data format.