Title :
On the concept of instantaneous frequency
Author :
Oliveira, Paulo M. ; Barroso, Victor
Author_Institution :
Base Naval de Lisboa, Almada, Portugal
Abstract :
The concept of instantaneous frequency is still not clearly defined. Current operational definitions give rise to physical paradoxes, and difficult proper interpretation of the obtained results. In this paper, we discuss why those paradoxes appear, and show how they can be avoided. We introduce a new definition of instantaneous frequency, which yields physically consistent results. This is confirmed with the help of several examples
Keywords :
signal processing; time-frequency analysis; analytic signals; instantaneous frequency; operational definitions; paradoxes; Chirp; Fourier transforms; Frequency; Signal analysis;
Conference_Titel :
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4428-6
DOI :
10.1109/ICASSP.1998.681594
