Title :
New time-frequency analyses of EMG and TMJ sound signals
Author :
Zheng, Cunsheng ; Widmalm, Sven E. ; Williams, William J.
Author_Institution :
Michigan Univ., Ann Arbor, MI, USA
Abstract :
The use of the reduced interference distribution (RID) to obtain improved energy density representation of nonstationary signals in time and frequency is described. Two applications of clinical interest, namely, 3-D graphical presentations of motor unit action potentials (MUAPs) and of temporomandibular joint (TMJ) sounds, have been performed and are presented to show the advantages of using the RID. It is found that the RID gives more detailed and more accurate information about those signals when compared with other methods for time-frequency representation
Keywords :
bioacoustics; bioelectric potentials; biomedical measurement; muscle; signal processing; waveform analysis; 3D graphical presentations; energy density representation; motor unit action potentials; nonstationary signals; reduced interference distribution; temporomandibular joint sounds; time-frequency analysis; Application software; Biomedical engineering; Computer science; Electromyography; Interference; Signal analysis; Signal resolution; Signal restoration; Spectrogram; Time frequency analysis;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95960
