TY - GEN
T1 - Hybrid linear/quadratic time-frequency attributes
AU - Baraniuk, Richard
AU - Coates, Mark
AU - Steeghs, Philippe
N1 - Funding Information:
This work was supported by NSF grants MIP-9457438 and CCR-9973188, ONR grant N00014-99-1-0813.
Publisher Copyright:
© 2000 IEEE.
PY - 2000
Y1 - 2000
N2 - We present an efficient method for robustly calculating time-frequency attributes of a signal, including instantaneous mean frequency, bandwidth, and kurtosis. Most current approaches involve a costly intermediate step of computing a (highly oversampled) 2-D bilinear time-frequency representation (TFR), which is then collapsed to the 1-D attribute. Using the principles of hybrid linear/bilinear time-frequency analysis, we propose computing attributes as nonlinear combinations of the (barely oversampled) linear Gabor transform of the signal. The method is both computationally efficient and accurate-it performs as well as the best bilinear techniques based on adaptive TFRs. To illustrate, we calculate an attribute of a seismic cross-section.
AB - We present an efficient method for robustly calculating time-frequency attributes of a signal, including instantaneous mean frequency, bandwidth, and kurtosis. Most current approaches involve a costly intermediate step of computing a (highly oversampled) 2-D bilinear time-frequency representation (TFR), which is then collapsed to the 1-D attribute. Using the principles of hybrid linear/bilinear time-frequency analysis, we propose computing attributes as nonlinear combinations of the (barely oversampled) linear Gabor transform of the signal. The method is both computationally efficient and accurate-it performs as well as the best bilinear techniques based on adaptive TFRs. To illustrate, we calculate an attribute of a seismic cross-section.
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U2 - 10.1109/ICASSP.2000.859051
DO - 10.1109/ICASSP.2000.859051
M3 - Conference contribution
AN - SCOPUS:0033677168
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 681
EP - 684
BT - Signal Processing Theory and Methods IIAudio and ElectroacusticsSpeech Processing I
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 25th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2000
Y2 - 5 June 2000 through 9 June 2000
ER -