About the Authors
- Esa Räsänen
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* E-mail: esa.rasanen@tut.fi
Affiliations Department of Physics, Tampere University of Technology, FI-33101 Tampere, Finland, Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
- Otto Pulkkinen
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Affiliation Department of Physics, Tampere University of Technology, FI-33101 Tampere, Finland
- Tuomas Virtanen
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Affiliation Department of Signal Processing, Tampere University of Technology, FI-33101 Tampere, Finland
- Manfred Zollner
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Affiliation Electro-Acoustic Laboratory, Regensburg University of Applied Sciences, D-93025 Regensburg, Germany
- Holger Hennig
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Affiliations Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA, Max Planck Institute for Dynamics and Self-Organization (MPI DS) Göttingen, Am Fassberg 17, D-37077 Göttingen, Germany
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: ER HH. Performed the experiments: ER OP TV. Analyzed the data: ER OP HH. Contributed reagents/materials/analysis tools: ER OP TV MZ HH. Wrote the paper: ER OP TV HH.