Title :
Cross-spectral methods for processing biological signals
Author :
Nelson, Douglas J.
Author_Institution :
Dept. of Defense, Fort Meade, MD, USA
Abstract :
We present methods for estimation of signal parameters and apply these methods to biological signals. The methods are based on cross-spectral phase which is computed from the phase of the short time Fourier transform. The methods are applied to acoustical biological signals, including human speech and dolphin sonar clicks. Specifically addressed are the problems of crisp narrowband time frequency representations from very small data sets, accurately estimating speech formants, blind recovery of the group delay of the transmission channel and equalization of time-frequency representations
Keywords :
biocommunications; fast Fourier transforms; phase estimation; signal representation; sonar signal processing; spectral analysis; speech processing; time-frequency analysis; acoustical biological signals; biological signal processing; blind recovery; cross-spectral methods; cross-spectral phase; dolphin sonar clicks; group delay; human speech; narrowband representations; short time Fourier transform; signal parameter estimation; small data sets; speech formants; time frequency representations; transmission channel equalization; Biology computing; Delay estimation; Dolphins; Fourier transforms; Humans; Parameter estimation; Signal processing; Sonar; Speech; Time frequency analysis;
Conference_Titel :
Statistical Signal and Array Processing, 2000. Proceedings of the Tenth IEEE Workshop on
Conference_Location :
Pocono Manor, PA
Print_ISBN :
0-7803-5988-7
DOI :
10.1109/SSAP.2000.870154