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Abstract
A novel precise method of signal analysis in the time-frequency domain is presented. A signal energy distribution is estimated by discard and displacement of energy parts of the classical spectrogram. A channelized instantaneous frequency and a local group delay are used in order to energy replacement. Additionally, newly introduced representations such as: a channelized instantaneous bandwidth and a local group duration are used for remove some part of irrelevant energy. An obtained energy distribution called attractogram is highly concentrated. And it causes that mono-components of an analyzed signal are precisely localized in the time-frequency domain. The presented method is utilised in order to acustical signals analysis
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- Category:
- Conference activity
- Type:
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Title of issue:
- Proceedings of the 37th Scandinavian Symposium on Physical Acoustics strony 1 - 7
- Language:
- English
- Publication year:
- 2014
- Bibliographic description:
- Czarnecki K., Moszyński M.: Usage of concentrated spectrogram for analysis of acoustical signals// Proceedings of the 37th Scandinavian Symposium on Physical Acoustics/ ed. Bjørn Kolbrek Trondheim: The Norwegian Physical Society, 2014, s.1-7
- Verified by:
- Gdańsk University of Technology
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