accum_grad: 4
cmvn: global_cmvn
cmvn_conf:
  cmvn_file: data/train_libri/global_cmvn
  is_json_cmvn: true
ctc: ctc
ctc_conf:
  ctc_blank_id: 0
dataset: asr
dataset_conf:
  batch_conf:
    batch_size: 8
    batch_type: dynamic
    max_frames_in_batch: 120000
    pad_feat: true
  fbank_conf:
    dither: 1.0
    frame_length: 25
    frame_shift: 10
    num_mel_bins: 80
  filter_conf:
    max_length: 40960
    min_length: 0
    token_max_length: 400
    token_min_length: 1
  resample_conf:
    resample_rate: 16000
  shuffle: true
  shuffle_conf:
    shuffle_size: 1000
  sort: false
  sort_conf:
    sort_size: 2000
  spec_aug: true
  spec_aug_conf:
    max_f: 10
    max_t: 50
    num_f_mask: 2
    num_t_mask: 2
  spec_sub: false
  spec_sub_conf:
    max_t: 30
    num_t_sub: 3
  speed_perturb: true
decoder: bitransformer
decoder_conf:
  attention_heads: 4
  dropout_rate: 0.1
  linear_units: 2048
  num_blocks: 3
  positional_dropout_rate: 0.1
  r_num_blocks: 3
  self_attention_dropout_rate: 0.1
  src_attention_dropout_rate: 0.1
dtype: fp16
encoder: chunkformer
encoder_conf:
  activation_type: swish
  attention_dropout_rate: 0.1
  attention_heads: 4
  cnn_module_kernel: 15
  cnn_module_norm: layer_norm
  dropout_rate: 0.1
  dynamic_chunk_sizes:
  - -1
  - -1
  - 64
  - 128
  - 256
  dynamic_conv: true
  dynamic_left_context_sizes:
  - 64
  - 128
  - 256
  dynamic_right_context_sizes:
  - 64
  - 128
  - 256
  input_layer: dw_striding
  linear_units: 2048
  normalize_before: true
  num_blocks: 12
  output_size: 256
  pos_enc_layer_type: chunk_rel_pos
  positional_dropout_rate: 0.1
  selfattention_layer_type: chunk_rel_seflattn
  use_cnn_module: true
grad_clip: 5
input_dim: 80
log_interval: 100
max_epoch: 200
model: asr_model
model_conf:
  ctc_weight: 0.3
  length_normalized_loss: false
  lsm_weight: 0.1
  reverse_weight: 0.3
model_dir: exp/v11
optim: adamw
optim_conf:
  lr: 0.001
output_dim: 4992
save_states: model_only
scheduler: warmuplr
scheduler_conf:
  warmup_steps: 25000
tokenizer: bpe
tokenizer_conf:
  bpe_path: data/lang_char/train_libri_bpe5000.model
  is_multilingual: false
  non_lang_syms_path: null
  num_languages: 1
  special_tokens:
    <blank>: 0
    <eos>: 2
    <sos>: 2
    <unk>: 1
  split_with_space: false
  symbol_table_path: data/lang_char/train_libri_bpe5000_units.txt
train_engine: torch_ddp
use_amp: true
vocab_size: 4992