Journal of Electrical and Computer Engineering / 2016 / Article / Tab 8

Research Article

Audio Watermarking Scheme Based on Singular Spectrum Analysis and Psychoacoustic Model with Self-Synchronization

Table 8

Comparison of the computational times for determining the parameters of an host signal when the automatic parameterization is based on the differential evolution [29] and when it is based on the psychoacoustic model. The simulations were operated on the Fujitsu CX250 Cluster (JAIST parallel computers), where each node is equipped with Two Intel Xeon E5-2680v2 2.80 GHz (10 cores each) and 64 GB memory.

FunctionComputational time of the functionSearch space/No. of operationsApproximated total computational time

Differential EvolutionCost function evalution3 minutes 44 seconds31815 possible vectors13 hours 9 minutes
Psychoacoustic ModelSMR calculation0.36 seconds717 times4.3 minutes

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