用于提取EMG/MMG/ECG信号的频谱分析的特征量MATLAB代码，采用的算法是非负分解（NNMF）。-This program is designed to extract the feature of EMG/MMG/ECG signal in hand motions via the non-negative matrix factorization algorithm.

Non Negative Matrix Factorization (NNMF) might sound scary, but it s a relatively simple technique that extracts "features" from a document/term matrix. These features represent a cluster of terms within the documents, w