TY - GEN
T1 - A computationally efficient implementation of quadratic time-frequency distributions
AU - O'Toole, John M.
AU - Mesbah, Mostefa
AU - Boashash, Boualem
PY - 2007
Y1 - 2007
N2 - Time-frequency distributions (TFDs) are computationally intensive methods. A very common class of TFDs, namely quadratic TFDs, is obtained by time-frequency (TF) smoothing the Wigner Ville distribution (WVD). In this paper a computationally efficient implementation of this class of TFDs is presented. In order to avoid artifacts caused by circular convolution, linear convolution is applied in both the time and frequency directions. Four different kernel types are identified and separate optimised implementations are presented for each kernel type. The computational complexity is presented for the different kernel types.
AB - Time-frequency distributions (TFDs) are computationally intensive methods. A very common class of TFDs, namely quadratic TFDs, is obtained by time-frequency (TF) smoothing the Wigner Ville distribution (WVD). In this paper a computationally efficient implementation of this class of TFDs is presented. In order to avoid artifacts caused by circular convolution, linear convolution is applied in both the time and frequency directions. Four different kernel types are identified and separate optimised implementations are presented for each kernel type. The computational complexity is presented for the different kernel types.
UR - http://www.scopus.com/inward/record.url?scp=51549112387&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51549112387&partnerID=8YFLogxK
U2 - 10.1109/ISSPA.2007.4555346
DO - 10.1109/ISSPA.2007.4555346
M3 - Conference contribution
AN - SCOPUS:51549112387
SN - 1424407796
SN - 9781424407798
T3 - 2007 9th International Symposium on Signal Processing and its Applications, ISSPA 2007, Proceedings
BT - 2007 9th International Symposium on Signal Processing and its Applications, ISSPA 2007, Proceedings
T2 - 2007 9th International Symposium on Signal Processing and its Applications, ISSPA 2007
Y2 - 12 February 2007 through 15 February 2007
ER -