2021

Citrinet: Closing the Gap between Non-Autoregressive and Autoregressive End-to-End Models for Automatic Speech Recognition

Majumdar, Somshubra, Balam, Jagadeesh, Hrinchuk, Oleksii et al.

Understand

We propose Citrinet - a new end-to-end convolutional Connectionist Temporal Classification (CTC) based automatic speech recognition (ASR) model.

  • Citrinet is deep residual neural model which uses 1D time-channel separable convolutions combined with sub-word encoding and squeeze-and-excitation.
  • The resulting architecture significantly reduces the gap between non-autoregressive and sequence-to-sequence and transducer models.
  • We evaluate Citrinet on LibriSpeech, TED-LIUM2, AISHELL-1 and Multilingual LibriSpeech (MLS) English speech datasets.

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