model_type: zipformer-transducer
library_name: k2
model_name: Zipformer-cr-ctc-transducer-XL-290M
min_encoder_input_frames: 9
file: model.pt
tokenizer: bpe.model
decoding:
  method: modified_beam_search
  beam_size: 6
feature_opts:
  frame_opts:
    samp_freq: 16000
    frame_shift_ms: 10
    frame_length_ms: 25
    dither: 0.0
    preemph_coeff: 0.97
    window_type: povey
    blackman_coeff: 0.42
    snip_edges: false
  mel_opts:
    num_bins: 80
    low_freq: 20
    high_freq: 7600
model_params:
  feature_dim: 80
  subsampling_factor: 4
  num_encoder_layers: 2,2,4,5,4,2
  downsampling_factor: 1,2,4,8,4,2
  feedforward_dim: 512,1024,2048,3072,2048,1024
  num_heads: 4,4,4,8,4,4
  encoder_dim: 192,384,768,1024,768,384
  encoder_unmasked_dim: 192,192,320,384,320,192
  query_head_dim: '32'
  value_head_dim: '12'
  pos_head_dim: '4'
  pos_dim: 48
  cnn_module_kernel: 31,31,15,15,15,31
  decoder_dim: 512
  joiner_dim: 512
  context_size: 2
  causal: false
  chunk_size: 16,32,64,-1
  left_context_frames: 64,128,256,-1
  use_transducer: true
  use_ctc: true
  use_attention_decoder: false
  use_cr_ctc: true