dnn+hmm and gmm+hmm

[tumma...@gmail.com]

Dear all,

DNN haved replaced the GMM in AM, why the label of the dataset for dnn need the  GMM+HMM?

Thanks 

Y

[Daniel Povey]

Because it's much faster to get the alignments that way than training
a DNN-HMM from a flat start (and also it makes it possible to get the
decision tree for phonetic context dependency, which is not easy with
DNNs.).

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