Objective detection and time-frequency localization of components within transient signals
| Autor: | Josefin Starkhammar, Maria Sandsten, Isabella Reinhold |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Acoustics and Ultrasonics
Computer science Noise (signal processing) Acoustics 020206 networking & telecommunications Human echolocation 02 engineering and technology 01 natural sciences Signal Arts and Humanities (miscellaneous) 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Transient (oscillation) 010301 acoustics |
| Zdroj: | The Journal of the Acoustical Society of America. 143:2368-2378 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.5032215 |
| Popis: | An automatic component detection method for overlapping transient pulses in multi-component signals is presented and evaluated. The recently proposed scaled reassignment technique is shown to have the best achievable resolution for closely located Gaussian shaped transient pulses, even in heavy disruptive noise. As a result, the method automatically detects and counts the number of transients, giving the center times and center frequencies of all components with considerable accuracy. The presented method shows great potential for applications in several acoustic research fields, where coinciding Gaussian shaped transients are analyzed. The performance is tested on measured data from a laboratory pulse-echo setup and from a dolphin echolocation signal measured simultaneously at two different locations in the echolocation beam. Since the method requires little user input, it should be easily employed in a variety of research projects. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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