TY - GEN
T1 - An adaptive optimal-kernel time-frequency representation
AU - Jones, Douglas L.
AU - Baraniuk, Richard G.
N1 - Publisher Copyright:
© 1993 IEEE
PY - 1993
Y1 - 1993
N2 - Signal-dependent time-frequency representations perform well for a much wider range of signals than any fixed-kernel distribution. However, current signal-dependent representations are generally block-oriented techniques unsuitable for on-line implementation. The time-frequency representation presented here, based on a signal-dependent radially Gaussian kernel that adapts over time, tracks signal component variations over time and supports on-line implementation for signals of arbitrary length. The method uses a short-time ambiguity function for kernel optimization and as an intermediate step in computing constant-time slices of the time-frequency representation. While somewhat more expensive than fixed-kernel representations, this technique often provides much better performance.
AB - Signal-dependent time-frequency representations perform well for a much wider range of signals than any fixed-kernel distribution. However, current signal-dependent representations are generally block-oriented techniques unsuitable for on-line implementation. The time-frequency representation presented here, based on a signal-dependent radially Gaussian kernel that adapts over time, tracks signal component variations over time and supports on-line implementation for signals of arbitrary length. The method uses a short-time ambiguity function for kernel optimization and as an intermediate step in computing constant-time slices of the time-frequency representation. While somewhat more expensive than fixed-kernel representations, this technique often provides much better performance.
UR - http://www.scopus.com/inward/record.url?scp=84941872712&partnerID=8YFLogxK
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U2 - 10.1109/ICASSP.1993.319606
DO - 10.1109/ICASSP.1993.319606
M3 - Conference contribution
AN - SCOPUS:84941872712
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 109
EP - 112
BT - IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 1993
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1993 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 1993
Y2 - 27 April 1993 through 30 April 1993
ER -