A new acoustical measurement technique has been developed that provides a solution for the conflicting requirements of anechoic spectral measurements in the presence of a reverberant environment. This technique, called time delay spectrometry, recognizes that a system-forcing function linearly relating frequency with time provides spatial discrimination of signals of variable path length when perceived by a frequency-tracking spectrum analyzer.
Heyser, Richard C.
Affiliation: California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA
JAES Volume 15 Issue 4 pp. 370-382; October 1967
Publication Date: October 1, 1967
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