Zipformer

Transformer‑based automatic speech recognition (ASR) model for English and Chinese language.

Zipformer streaming ASR (Automatic Speech Recognition) model is a state‑of‑the‑art system designed for transcribing spoken language into written text streamingly. This model is based on the transformer architecture and has been optimized for edge inference by replacing linear layers with convolutional (conv) layers. It exhibits robust performance in realistic, noisy environments, making it highly reliable for real‑world applications. Specifically, it excels in long‑form transcription, capable of accurately transcribing audios. Time to the first token is the encoder's latency, while time to each additional token is joiner's latency, where we assume a max decoded length specified below.

Technical Details

Model checkpoint:pfluo/k2fsa-zipformer-chinese-english-mixed
Input resolution:80x71 (0.71 seconds audio)
Max decoded sequence length:200 tokens
Number of parameters (ZipformerEncoder):63.2M
Model size (ZipformerEncoder) (float):242 MB
Number of parameters (ZipformerDecoder):3.47M
Model size (ZipformerDecoder) (float):13.2 MB
Number of parameters (ZipformerJoiner):3.21M
Model size (ZipformerJoiner) (float):12.2 MB

Applicable Scenarios

  • Smart Home
  • Accessibility

License

Tags

  • foundation

Supported Compute Devices

  • Snapdragon X Elite CRD
  • Snapdragon X Plus 8-Core CRD

Supported Compute Chipsets

  • Snapdragon® X Elite
  • Snapdragon® X Plus 8-Core

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