A device known as a parametric array employs the nonlinearity of the air to create audible byproducts from inaudible ultrasound, resulting in an extremely directive, beam-like wide-band acoustical source. This source can be projected about an area much like a spotlight, and creates an actual spatialized sound distant from the transducer. A basic theoretical analysis of the airborne parametric array is outlined and verified experimentally, and future challenges are discussed.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=8327
(477KB)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
