2. Sonification in Theoretical Physics Katharina Vogt Prof. W. Plessas Prof. R. Höldrich Todtmoos, 12th september 2007

3. Oversound Bats Doppler effect Alarm Geiger counter Computer sounds Sonar Heart beat Bells

4. Overview Motivation Auditory Display and Sonification Examples Methods Sonifications… …of Numerical Spin Models …in Lattice QCD Outlook

5. Motivation Auditory Display and Sonification Examples Methods Sonifications… …of Numerical Spin Models …in Lattice QCD Outlook

6. Motivation Science focused on visualisation Changes: –real time audio synthesis software –human audition –growing amounts of data Auditory Display: possible alternative and complement

7. Motivation Auditory Display and Sonification Examples Methods Sonifications… …of Numerical Spin Models …in Lattice QCD Outlook

8. Galilei

9. Doppler effect

10. Examples Galilei, Dopplereffekt Discovery of Quantum Fluctuations Plasma and Radio Wave Science Listening to Earthquakes Oscillations of yeast cells with AFM EEG - data Social Sciences

11. Example: Quantum Oscillations Pereverzev S. V., Loshak A., Backhaus S., Davies J.C. and Packard R. E., „Quantum Oscillations between two weakly coupled reservoirs of superfluid 3 He“, Nature, Vol. 388, July 1997, pp. 449 – 451. Josephson B. D. „Possible new effects of superconductive tunneling“, Phys. Lett. 1, 251 – 253, 1962. f=(  2 -  1 )/h ... mean energy per particle

12. Auditory Display / Sonfication 1992 - 1 st International Conference on Auditory Display (ICAD) Sonification = use of audio to convey information Applications: –A–Auditory Graphs –A–Attensons –E–Earcons –A–Auditory Icons

13. Methods in research Audification: mapped to 1-d ev. transposed Parameter mapping: Model-based sonification

14. Advantages

15. + eyes-free conditions + high temporal and frequency resolution + parallel audio streams + the formation of auditory gestalt + backgrounding + usually interactive Furthermore in physics: + many (parameter) dimensions + audio streams as mathematical subspaces + wave phenomena in nature

16. Disadvantages - low resolution in some variables - potentially the annoyance - no persistence - user limitations and cultural bias - longer history of visualisation - the lack of absolute value and perceptual orthogonality

17. Aims of Sonification 1.Alternative representation of data 2.Use of audition in order to analyse scientific data 3.Artistic application

18. Motivation Auditory Display and Sonification Examples Methods Sonifications… …of Numerical Spin Models …in Lattice QCD Outlook

19. Sonifications so far SonEnvir - Sonification Environment (2005-2007) Spin models (Ising and Potts model) Pilot project on topological objects in QCD Baryon spectra of CQMs Simple sonifications of the Dirac spectrum Smaller projects: chaotic double pendulum, logistic equation

20. Ising and Potts Model Ising model: spin up and down phase transition magnetic/ non-magnetic Potts model: discrete, q vectors on unit circle For q  5 1st order phase transition For q  4 continuous

21. Audification of the Ising model Sequentialisation: (“torus-path” or Hilbert curve)

22. Parameter Mapping of Ising Model

23. Motivation Auditory Display and Sonification Examples Methods Sonifications… …of Numerical Spin Models …in Lattice QCD Outlook

24. Sonification in lattice QCD - pilot study topological charge 20 configurations - 15 smearing steps

27. Motivation Auditory Display and Sonification Examples Methods Sonifications… …of Numerical Spin Models …in Lattice QCD Outlook

28. XY-model Lattice QCD

29. Sonification is a possible alternative and complement to visualisation and data analysis, also in physics. Audio examples: http://sonenvir.at/data www.icad.org