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Methodology included the use of an in-house Kriging-assisted evolutionary algorithm driving an iterative loop which includes a parametric code for geometry representation and the ANSYS Fluent© solver for flow calculation.
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Nevertheless, a model is used in parametric coding.
Consequently, parametric coding is also related to musical synthesis.
In particular for low bit rate applications the parametric coding techniques constitute valuable tools.
This particular combination was subsequently added to the parametric coding amendment.
These amendments concern parametric coding techniques and encompass Spectral Band Replication (SBR), Sinusoidal Coding (SSC), and Parametric Stereo (PS).
But the parametric coding algorithms are of low robustness in the presence of noise or other hostile attacks.
Downmixing and parametric coding will cause interchannel interference such as 'tone leakage' artifacts when channel signals differ greatly [30].
So two adjacent channels always have the maximum similarity, and M/S coding and parametric coding are performed based on a two-channel unit.
In 2007, Goodwin and Jot proposed a PCA-based multichannel compression framework for parametric coding [13], which can enhance specific audio scenarios and provide robust spatial audio coding.
Furthermore, the computational complexity of an audio codec should be acceptable while maintaining enough coding efficiency, and parametric coding can only achieve a performance gain at low bitrates.
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