Vibration measurement of the tympanic membrane of guinea pig temporal bones using time-averaged speckle pattern interferometry.

@article{Wada2002VibrationMO,
  title={Vibration measurement of the tympanic membrane of guinea pig temporal bones using time-averaged speckle pattern interferometry.},
  author={Hiroshi Wada and Masayoshi Ando and Masataka Takeuchi and Hironori Sugawara and Takuji Koike and Toshimitsu Kobayashi and Koji Hozawa and Takashi Gemma and Makoto Nara},
  journal={The Journal of the Acoustical Society of America},
  year={2002},
  volume={111 5 Pt 1},
  pages={2189-99}
}
"Time-averaged holography" and "holographic interferometry" enable recording of the complete vibration pattern of a surface within several seconds. The results appear in the form of fringes. Vibration amplitudes smaller than 100 nm are not readily measurable by these techniques, because such small amplitudes produce variations in gray level, but not fringes. In practice, to obtain clear fringes in these measurements, stimulus sound pressures higher than 100 dB SPL must be used. The phase of… CONTINUE READING

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