Comparison between two different full-wave methods for the computation of nonlinear ultrasound fields in inhomogeneous and attenuating tissue

2014 ◽  
Author(s):  
L. Demi ◽  
B.E. Treeby ◽  
M.D. Verweij
Keyword(s):  
Nonlinear Ultrasound ◽  
Full Wave ◽  
Wave Methods

Rapid calculation of seismic amplitudes

Geophysics ◽  
1990 ◽  
Vol 55 (11) ◽  
pp. 1504-1507 ◽  
Author(s):  
John E. Vidale ◽  
Heidi Houston
Keyword(s):  
Seismic Waves ◽  
Computational Cost ◽  
Three Dimensional ◽  
Reflection Seismology ◽  
Full Wave ◽  
Rapid Calculation ◽  
Seismic Amplitudes ◽  
Wave Methods ◽  
Root Operation ◽  
Arbitrary Velocity

The ability to calculate traveltimes and amplitudes of seismic waves is useful for many reflection seismology applications such as migration and tomography. Traditionally, ray tracing (C⁁erveny et al., 1977; Julian, 1977), paraxial methods (Claerbout, 1971), or full‐wave methods (Alterman and Karal, 1968) are used for such calculations. These methods have in common considerable computational expense. Recently, Vidale (1988, 1990a) presented two‐dimensional and three‐dimensional methods to efficiently compute traveltimes of the first arrivals to every point in a regularly spaced grid of points, given an arbitrary velocity field sampled at these points. The computational cost of finding each traveltime is roughly one square root operation.

Audio acoustic modeling using full‐wave methods

2008 ◽  
Vol 123 (5) ◽  
pp. 3048-3048 ◽  
Author(s):  
Timo Lahivaara ◽  
Tomi Huttunen ◽  
Simo‐Pekka Simonaho
Keyword(s):  
Acoustic Modeling ◽  
Full Wave ◽  
Wave Methods
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