NeMo CTC-based models

This page lists all offline CTC models from NeMo.

Hint

Please refer to https://catalog.ngc.nvidia.com/orgs/nvidia/collections/nemo_asr for a list of pre-trained NeMo models.

• How to export models from NeMo to sherpa-onnx
  • Step 1: Export model.onnx
  • Step 2: Add metadata
  • Step 3: Obtain model.int8.onnx
  • Step 4: Obtain tokens.txt
• English
  • sherpa-onnx-nemo-parakeet_tdt_ctc_110m-en-36000-int8 (English, 英语)
    • Download the model
    • Decode wave files
    • Speech recognition from a microphone
    • Speech recognition from a microphone with VAD
  • stt_en_citrinet_512
    • Download the model
    • Decode wave files
  • stt_en_conformer_ctc_small
    • Download the model
    • Decode wave files
  • stt_en_conformer_ctc_medium
    • Download the model
    • Decode wave files
  • stt_en_conformer_ctc_large
    • Download the model
    • Decode wave files
• Russian
  • sherpa-onnx-nemo-ctc-giga-am-v2-russian-2025-04-19
    • Download the model
    • Decode wave files
    • Speech recognition from a microphone
    • Speech recognition from a microphone with VAD
  • sherpa-onnx-nemo-ctc-giga-am-russian-2024-10-24
    • Download the model
    • Decode wave files
    • Speech recognition from a microphone
    • Speech recognition from a microphone with VAD
• Japanese
  • sherpa-onnx-nemo-parakeet-tdt_ctc-0.6b-ja-35000-int8 (Japanese, 日语)
    • Download the model
    • Decode wave files
    • Speech recognition from a microphone
    • Speech recognition from a microphone with VAD