We report imaging of a sound field radiated from a sound source by parallel phase-shifting digital holography. We used a Nd:YVO_4 laser emitting light with a wavelength of 532 nm as a light source and a polarization imaging camera to record holograms. The holograms were recorded 40000 Hz sound with 100000 frame per second. To adjust one wavelength of sound to the recordable area of the image sensor, we introduced a demagnification optical system in the path of the object beam. The phase difference images were calculated from the recorded holograms. Thus, we observed propagation of periodical phase distributions of sound and succeeded in sound field imaging.
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