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This underlines the need to extract the acoustic part.
The implicit treatment of the acoustic part allows the time-step to be independent of the Mach number.
The approach, that was originally developed using a viscous/inviscid decomposition technique, involves two steps comprising a viscous incompressible flow part and an inviscid or viscous acoustic part.
A multidimensional wave structure is derived to model the acoustic part of this non-linear system, that allows infinitely many propagation directions in the numerical method.
The scheme is based on a semi-implicit discretization which treats the acoustic part implicitly and the convective and diffusive parts explicitly.
The theoretical analysis is based on the finite element method in [1] for the structural part, and the classical solution suggested in [2, 3] for the acoustic part.
Similar(46)
The purpose of signal segmentation is to differentiate the important acoustic parts of the cry recordings from the unimportant acoustic activities that compose the audio signals.
In this study, we have grouped together all extraneous acoustic parts in a single target class called residual.
While you won't be recreating Stairway in its glorious entirety with this thing you can get a nice approximation of the early acoustic parts.
The output of this segmentation system can then be utilized for performing further analysis involving extraction of required acoustic parameters from the identified acoustic parts.
In this study, we propose a hidden Markov model (HMM) based audio segmentation method to identify the relevant acoustic parts of the cry signal (i.e., expiratory and inspiratory phases) from recordings made in natural environments with various interfering acoustic sources.
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Justyna Jupowicz-Kozak
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