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} |