readme: ---
  datasets: 
    - AliMeeting
  language: 
    - zh
  license: apache-2.0
  metrics: 
    - 
      name: "IHM test CER"
      type: cer
      value: 11.53
    - 
      name: "SDM test CER"
      type: cer
      value: 25.85
    - 
      name: "GSS test CER"
      type: cer
      value: 14.22
  tags: 
    - k2
    - icefall
  ---
  
  # AliMeeting
  
  This is an ASR recipe for the AliMeeting corpus. AliMeeting provides recordings from the speaker's
  headset microphones and an 8-channel microphone array.
  We pool data in the following 4 ways and train a single model on the pooled data:
  
  (i) individual headset microphone (IHM)
  (ii) IHM with simulated reverb
  (iii) Single distant microphone (SDM)
  (iv) GSS-enhanced array microphones
  
  Speed perturbation and MUSAN noise augmentation are additionally performed on the pooled
  data.
  
  ## Performance Record
  
  ### pruned_transducer_stateless7
  
  The following are decoded using `modified_beam_search`:
  
  | Evaluation set           | eval CER    | test CER |
  |--------------------------|------------|---------|
  | IHM                      |  9.58  | 11.53 |
  | SDM                      |  23.37  | 25.85 |
  | MDM (GSS-enhanced)       |  11.82  | 14.22 |
  
  See the [recipe](https://github.com/k2-fsa/icefall/tree/master/egs/alimeeting/ASR_v2) for details.
  