content: # Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
  # Copyright (c) 2019, Myrtle Software Limited. All rights reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  model = "RNNT"
  
  [input]
  normalize = "per_feature"
  sample_rate = 16000
  window_size = 0.02
  window_stride = 0.01
  window = "hann"
  features = 80
  n_fft = 512
  frame_splicing = 3
  dither = 0.00001
  feat_type = "logfbank"
  normalize_transcripts = true
  trim_silence = true
  pad_to = 0   # TODO
  max_duration = 16.7
  speed_perturbation = true
  
  
  cutout_rect_regions = 0
  cutout_rect_time = 60
  cutout_rect_freq = 25
  
  
  cutout_x_regions = 2
  cutout_y_regions = 2
  cutout_x_width = 6
  cutout_y_width = 6
  
  
  [input_eval]
  normalize = "per_feature"
  sample_rate = 16000
  window_size = 0.02
  window_stride = 0.01
  window = "hann"
  features = 80
  n_fft = 512
  frame_splicing = 3
  dither = 0.00001
  feat_type = "logfbank"
  normalize_transcripts = true
  trim_silence = true
  pad_to = 0
  
  
  [rnnt]
  rnn_type = "lstm"
  encoder_n_hidden = 1024
  encoder_pre_rnn_layers = 2
  encoder_stack_time_factor = 2
  encoder_post_rnn_layers = 3
  pred_n_hidden = 320
  pred_rnn_layers = 2
  forget_gate_bias = 1.0
  joint_n_hidden = 512
  dropout=0.32
  
  
  [labels]
  labels = [" ", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "'"]
  