# ################################ # Model: wav2vec2 + DNN + CTC/Attention # Augmentation: SpecAugment # Authors: Titouan Parcollet 2021 # ################################ sample_rate: 16000 wav2vec2_hub: facebook/wav2vec2-large-lv60 # BPE parameters token_type: unigram # ["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: 1000 # 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.lobes.models.VanillaNN.VanillaNN input_shape: [null, null, 1024] activation: !ref dnn_blocks: !ref dnn_neurons: !ref wav2vec2: !new:speechbrain.lobes.models.huggingface_wav2vec.HuggingFaceWav2Vec2 source: !ref output_norm: True freeze: True pretrain: False save_path: model_checkpoints emb: !new:speechbrain.nnet.embedding.Embedding num_embeddings: !ref embedding_dim: !ref dec: !new:speechbrain.nnet.RNN.AttentionalRNNDecoder enc_dim: !ref input_size: !ref rnn_type: gru attn_type: location hidden_size: 1024 attn_dim: 1024 num_layers: 1 scaling: 1.0 channels: 10 kernel_size: 100 re_init: True dropout: 0.0 ctc_lin: !new:speechbrain.nnet.linear.Linear input_size: !ref n_neurons: !ref seq_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 seq_cost: !name:speechbrain.nnet.losses.nll_loss label_smoothing: 0.1 asr_model: !new:torch.nn.ModuleList - [!ref , !ref , !ref , !ref , !ref ] tokenizer: !new:sentencepiece.SentencePieceProcessor encoder: !new:speechbrain.nnet.containers.LengthsCapableSequential wav2vec2: !ref enc: !ref decoder: !new:speechbrain.decoders.S2SRNNBeamSearcher embedding: !ref decoder: !ref linear: !ref ctc_linear: !ref bos_index: !ref eos_index: !ref blank_index: !ref min_decode_ratio: !ref max_decode_ratio: !ref beam_size: !ref eos_threshold: !ref using_max_attn_shift: !ref max_attn_shift: !ref temperature: !ref modules: encoder: !ref decoder: !ref pretrainer: !new:speechbrain.utils.parameter_transfer.Pretrainer loadables: wav2vec2: !ref asr: !ref tokenizer: !ref