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Selective sound field imaging by parallel phase-shifting digital holography with time-frequency filtering

Shun Notte,Sota Hashimoto,Tomoyoshi Inoue,Kenzo Nishio,Peng Xia,Sudheesh K. Rajput,Osamu Matoba,Yasuhiro Awatsuji

Frontiers in Optics + Laser Science 2022 (FIO, LS)（2022）

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Abstract
We proposed an optical method for imaging of a motion picture of sounds for selected frequency. We recorded three sounds of frequencies 39.5, 40.0, and 40.5 kHz with the frame rate of 100,000 fps by parallel phase-shifting digital holography and succeeded in imaging the sound for selected frequency.
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Key words
digital holography,selective sound field,imaging,phase-shifting,time-frequency
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