Optimization of the Realization of Quadratic Discrete Time-Frequency Distributions as a Matlab Toolbox

O'Toole, John and Boashash, Boualem (2004). Optimization of the Realization of Quadratic Discrete Time-Frequency Distributions as a Matlab Toolbox. In: Proceedings of the IC-SEC 2004: International Conference on Scientific and Engineering Computation. IC-SEC 2004: International Conference on Scientific and Engineering Computation, Singapore, (). 30 June - 2 July, 2004.

Author O'Toole, John
Boashash, Boualem
Title of paper Optimization of the Realization of Quadratic Discrete Time-Frequency Distributions as a Matlab Toolbox
Conference name IC-SEC 2004: International Conference on Scientific and Engineering Computation
Conference location Singapore
Conference dates 30 June - 2 July, 2004
Proceedings title Proceedings of the IC-SEC 2004: International Conference on Scientific and Engineering Computation
Publication Year 2004
Sub-type Fully published paper
Language eng
Abstract/Summary An optimised time-frequency signal analysis software tool is presented here as a MATLAB toolbox. This toolbox is implemented using existing and novel methods for a specific class of Time-Frequency Distributions (TFDs) called quadratic TFDs. This is first applied to a TFD called the Wigner-Ville Distribution (WVD), as all other quadratic TFDs can be represented as a smoothed (in both time and frequency) version of the WVD. This method is then extended to the general quadratic TFD case, where the complete implementation optimises both simulation speed and memory usage. Also some quadratic TFDs can be represented in their direct form, such as the Spectrogram and Rihaczek distribution. The optimization of the implementation of these distributions is also examined.
Subjects 090609 Signal Processing
1103 Clinical Sciences
Keyword discrete time
frequency
TFD
efficient realisation
FFT
Q-Index Code EX

Document type: Conference Paper
Collection: UQ Centre for Clinical Research Publications
 
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