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Multimodal sound field imaging using digital holography [Invited].

Sudheesh K Rajput, Osamu Matoba, Yuki Takase

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    Multiparameter digital holography (DH) visualizes invisible sound fields alongside visual data. This review highlights DH

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    Area of Science:

    • Optics
    • Acoustics
    • Physics
    • Biophysics

    Background:

    • Sound is a crucial physical phenomenon in various processes.
    • Visualizing sound fields is challenging due to their invisible nature.
    • Multiparameter digital holography (DH) offers a potential solution.

    Purpose of the Study:

    • To review sound field imaging techniques.
    • To emphasize DH's capability for simultaneous sound and visual feature visualization.
    • To demonstrate DH for audible and ultrasound range imaging.

    Main Methods:

    • Review of multiparameter digital holography (DH) principles.
    • Focus on DH's phase and amplitude reconstruction for visualization.
    • Presentation of experimental results with high-speed recordings.

    Main Results:

    • DH can simultaneously visualize sound and visual features.
    • Demonstrated sound field imaging in both audible and ultrasound ranges.
    • High-speed recordings validate DH's effectiveness.

    Conclusions:

    • DH is a powerful tool for sound field imaging.
    • Multiparameter DH enables simultaneous visualization of sound and visual data.
    • DH has applications in diverse physical and biological processes.