espnet2.legacy.nets.pytorch_backend.nets_utils.trim_by_ctc_posterior

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espnet2.legacy.nets.pytorch_backend.nets_utils.trim_by_ctc_posterior(h: Tensor, ctc_probs: Tensor, masks: Tensor, pos_emb: Tensor = None)

Trim the encoder hidden output using CTC posterior.

The continuous frames in the tail that confidently represent blank symbols are trimmed.