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Photonics Dictionary

acoustical hologram

An acoustical hologram refers to a three-dimensional representation of sound waves in space, analogous to optical holography but applied to acoustic waves. Unlike visual holography, which creates three-dimensional images using light interference patterns, acoustical holography involves capturing and reconstructing the spatial distribution of sound waves.

Key points about acoustical holograms include:

Capture method: Sound waves are recorded using arrays of microphones or other sensors that capture the amplitude and phase information of the waves at various points in space.

Processing: Sophisticated signal processing techniques are then used to analyze the recorded data, reconstructing the sound field in three dimensions.

Applications: Acoustical holograms have diverse applications, such as in acoustic imaging and visualization, acoustic virtual reality, sound field synthesis, and spatial audio rendering. They can help create immersive auditory experiences or aid in analyzing and understanding complex sound environments.

Acoustical holography is valuable in fields such as engineering, acoustics, entertainment, and scientific research, where precise characterization and manipulation of sound fields are essential.
 

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