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EURASIP Journal on Advances in Signal Processing
Fig. 3 | EURASIP Journal on Advances in Signal Processing

Fig. 3

From: Feature enhancement of reverberant speech by distribution matching and non-negative matrix factorization

Fig. 3

The cost function of NMF parameter optimization in log-scale. The solid and dashed lines illustrate the NMF optimization with DM and MDI initializations, respectively. The cost function is computed as the average of ten randomly selected far recorded SimData utterances. Here, the activation matrix A is updated for the first 50 iterations, the reverberation matrix R is updated for the next 50 iterations, and finally the activation matrix A is updated again

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