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Article Dans Une Revue Applied Acoustics Année : 2021

Digital Acoustic Projector - A proof of concept

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Résumé

This paper describes a Digital Acoustic Projector (DAP), which is a hybrid sound system combining both a digital loudspeaker and a parametric array to convert directly an n-bits digital electrical signal into sound. It consists of a set of ultrasonic transducers emitting a sinusoidal signal modulated by a sampled and quantised low-frequency signal. Self demodulation effect is used to demodulate the acoustic signal during its propagation in the air. As a proof of concept, a DAP is designed to convert a 4-bit digital electrical signal into sound. First experimental results are presented.
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Dates et versions

hal-03019965 , version 1 (23-11-2020)

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Libor Husnik, Philippe Béquin, Pierrick Lotton, Antonin Novak. Digital Acoustic Projector - A proof of concept. Applied Acoustics, 2021, 173, ⟨10.1016/j.apacoust.2020.107667⟩. ⟨hal-03019965⟩
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