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Table 1 Candidates of the ESN model parameters for coarse grid search

From: Audio bandwidth extension using ensemble of recurrent neural networks

a in {1/16, 1/8, 1/4, 1/2, 1}
a res {1/4, 1/2, 3/4, 1, 5/4}
f sparsity {1/16, 1/8, 1/4, 1/2, 1}
α {1/5, 2/5, 3/5, 4/5, 1}
β {0, 1, 2, 3, 4}
d S {200, 400, 600, 800, 1000}