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Science > Acoustics 
acoustic signature
Science; Acoustics
A pressure time-history, usually of a transient type (e.g. acoustic signature of a gunshot), that is characteristic of a particular sound source. The meaning is sometimes ...
acoustic sink
Science; Acoustics
An object or region that acts as a net absorber of acoustic energy under transient conditions, or of acoustic power under steady-state conditions.
absorbing boundary condition
Science; Acoustics
In computational acoustics a condition that is applied at the computational domain boundary to simulate extension of the domain to infinity, i.e. free-field radiation. The domain ...
absorption cross-section
Science; Acoustics
Of an object in an acoustic medium the area σ in the equation W abs =σI inc that gives the net sound power absorbed (within the object or the immediately surrounding medium), ...
acoustic telescope
Science; Acoustics
A device for imaging a distributed acoustic source from the far field. It may consist of an ellipsoidal reflector, with the remote focus placed near the source, or alternatively, ...
acoustic thermometry
Science; Acoustics
The use of acoustic travel time data to infer the temperature along an underwater ray path, by inversion of standard relationships between temperature and sound speed.
acoustic tomography
Science; Acoustics
In underwater acoustics the analysis of coded signals exchanged between multiple pairs of transmitting and receiving systems, in order to study ocean or sea bed properties. As an ...
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