# ################################ # Model: wav2vec2 + DNN + CTC/Attention # Augmentation: SpecAugment # Authors: Titouan Parcollet 2021 # ################################ sample_rate: 16000 wav2vec2_hub: facebook/wav2vec2-large-xlsr-53 # BPE parameters token_type: char # ["unigram", "bpe", "char"] character_coverage: 1.0 # Model parameters activation: !name:torch.nn.LeakyReLU dnn_layers: 2 dnn_neurons: 1024 emb_size: 128 dec_neurons: 1024 # Outputs output_neurons: 36 # BPE size, index(blank/eos/bos) = 0 # Decoding parameters # Be sure that the bos and eos index match with the BPEs ones blank_index: 0 bos_index: 1 eos_index: 2 min_decode_ratio: 0.0 max_decode_ratio: 1.0 beam_size: 80 eos_threshold: 1.5 using_max_attn_shift: True max_attn_shift: 140 ctc_weight_decode: 0.0 temperature: 1.50 enc: !new:speechbrain.nnet.containers.Sequential input_shape: [null, null, 1024] linear1: !name:speechbrain.nnet.linear.Linear n_neurons: 1024 bias: True bn1: !name:speechbrain.nnet.normalization.BatchNorm1d activation: !new:torch.nn.LeakyReLU drop: !new:torch.nn.Dropout p: 0.15 linear2: !name:speechbrain.nnet.linear.Linear n_neurons: 1024 bias: True bn2: !name:speechbrain.nnet.normalization.BatchNorm1d activation2: !new:torch.nn.LeakyReLU drop2: !new:torch.nn.Dropout p: 0.15 linear3: !name:speechbrain.nnet.linear.Linear n_neurons: 1024 bias: True bn3: !name:speechbrain.nnet.normalization.BatchNorm1d activation3: !new:torch.nn.LeakyReLU wav2vec2: !new:speechbrain.lobes.models.huggingface_wav2vec.HuggingFaceWav2Vec2 source: !ref output_norm: True freeze: True save_path: model_checkpoints ctc_lin: !new:speechbrain.nnet.linear.Linear input_size: !ref n_neurons: !ref log_softmax: !new:speechbrain.nnet.activations.Softmax apply_log: True ctc_cost: !name:speechbrain.nnet.losses.ctc_loss blank_index: !ref asr_model: !new:torch.nn.ModuleList - [!ref , !ref ] tokenizer: !new:sentencepiece.SentencePieceProcessor encoder: !new:speechbrain.nnet.containers.LengthsCapableSequential wav2vec2: !ref enc: !ref ctc_lin: !ref decoding_function: !name:speechbrain.decoders.ctc_greedy_decode blank_id: !ref modules: encoder: !ref pretrainer: !new:speechbrain.utils.parameter_transfer.Pretrainer loadables: wav2vec2: !ref asr: !ref tokenizer: !ref