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Communication Dans Un Congrès Année : 2006

Detection of Time-Frequency Components of Signals: Bayes and focus SNR

Julien Huillery
Nadine Martin

Résumé

The Bayesian time-frequency detector operating on spectrogram of non stationary signalsis studied. As direct evaluation of the likelihood ratio is impossible, an a priori user parameter called focus is introduced. It is defined as a local time-frequency signal to noise ratio at which the detection is tuned to be optimal. Leading to a unique detection threshold, the parameter introduced is equivalent to the probability of false alarm used in the Neyman-Pearson detection strategy. However, we expect the formulation in terms of local signal to noise ratio to be of intuitive and practical interest.
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Dates et versions

hal-00370085 , version 1 (23-03-2009)

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  • HAL Id : hal-00370085 , version 1

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Julien Huillery, Nadine Martin. Detection of Time-Frequency Components of Signals: Bayes and focus SNR. Seventh International Conference on Mathematics in Signal Processing. IMA 2006, Dec 2006, Cirencester, United Kingdom. 4p. ⟨hal-00370085⟩
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