Pratt A J, Gander R E, Brandell B R
Division of Biomedical Engineering, University of Saskatchewan, Saskatoon, Canada.
IEEE Trans Biomed Eng. 1991 Mar;38(3):306-9. doi: 10.1109/10.133215.
A prototype instrument is described that uses a digital signal processor to estimate the median frequency of the myoelectric signal in real time. A set of tenth-order digital low-pass filters is used to track the median frequency. An estimate of frequency is obtained once every 256 ms with a resolution of 1 Hz.