Phasor Wave-Field Simulation Providing Direct Access to Instantaneous Frequency: A Demonstration for a Damped Elastic Wave Simulation

Autor: René Hammer, Lisa Mitterhuber, Roland Brunner
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Acoustics, Vol 3, Iss 3, Pp 485-492 (2021)
Druh dokumentu: article
ISSN: 2624-599X
DOI: 10.3390/acoustics3030032
Popis: In this work, we describe and simulate a wave field as a phasor field by simultaneously propagating its real and imaginary parts. In this way, the unique phase angle is directly available, and its time derivative determines the instantaneous frequency. We utilize the concept to describe damping in elastic wave propagation, which is of high importance in several engineering and research disciplines, ranging from earth science and medical diagnosis to physics.
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