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Active acoustic touch interface

Active acoustic touch interface

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© The Institution of Engineering and Technology
Published

An active acoustic touch panel interface is described that aims to detect and localise touch interactions using a minimal amount of surface preparation and hardware. Using a single transmitter and only one or two receivers, the position of a touch can be estimated by analysing the resulting changes to the frequency response of the surface. An outline of the signal processing applied is described, along with the results of initial experiments.

Inspec keywords: acoustic receivers; signal processing; haptic interfaces

Other keywords: active acoustic touch panel interface; surface preparation; receivers; hardware; transmitter; signal processing; touch interactions

Subjects: User interfaces; Interactive-input devices

References

    1. 1)
      • , : `Acoustic touch sensor', US Patent Application #20050243071, 2005.
    2. 2)
      • Antonacci, F., Matteucci, M., Migliore, D., Riva, D., Sarti, A., Tagliasacchi, M., Tubaro, S.: `Tracking multiple acoustic sources in reverberant environments using regularized particle filter', 15thInt. Conf. on Digital Signal Processing, July 2007, p. 99–102.
    3. 3)
      • Ribay, G., Clorennec, D., Catheline, S., Ing, R.K., Quieffin, N., Fink, M.: `Tactile time reversal interactivity: experiment and modelization', Proc. IEEE Ultrason. Symp., September 2005, p. 2104–2107.
    4. 4)
      • A. Farina . Simultaneous measurement of impulse response and distortion with a swept-sine technique. J. Audio Eng. Soc. (Abstracts)
    5. 5)
      • ‘Tangible Acoustic Interfaces for Computer Human Interaction’ (2004–2006), EU Project no. IST- 2002-507822.
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2009.2054
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