hparams.py

import tensorflow as tf
from text.symbols import kor_symbols as symbols

def create_hparams(hparams_string=None, verbose=False):
    """Create model hyperparameters. Parse nondefault from given string."""

    hparams = tf.contrib.training.HParams(
        ################################
        # Experiment Parameters        #
        ################################
        epochs=30,
        iters_per_checkpoint=500,
        seed=1234,
        dynamic_loss_scaling=True,
        fp16_run=False,
        distributed_run=False,

        dist_backend="nccl",
        dist_url="tcp://localhost:54321",
        cudnn_enabled=True,
        cudnn_benchmark=False,
        ignore_layers=['embedding.weight'],

        ################################
        # Data Parameters             #
        ################################
        load_mel_from_disk=False,
        training_files='filelists/nam-h_train_filelist.txt',
        validation_files='filelists/nam-h_val_filelist.txt',
        text_cleaners=['korean_cleaners'], # english_cleaners, korean_cleaners
        sort_by_length=False,

        ################################
        # Audio Parameters             #
        ################################
        max_wav_value=32768.0,
        sampling_rate=16000,
        filter_length=1024,
        hop_length=256, # number audio of frames between stft colmns, default win_length/4
        win_length=1024, # win_length int <= n_ftt: fft window size (frequency domain), defaults to win_length = n_fft
        n_mel_channels=80,
        mel_fmin=0.0,
        mel_fmax=8000.0,

        ################################
        # Model Parameters             #
        ################################
        # n_symbols = 80, # set 80 if u use korean_cleaners. set 65 if u use english_cleaners
        n_symbols = len(symbols),
        symbols_embedding_dim=512,

        # Transcript encoder parameters
        encoder_kernel_size = 5,
        encoder_n_convolutions = 3,
        encoder_embedding_dim = 512,

        # Prosody encoder parameters
        prosody_n_convolutions = 6,
        prosody_conv_dim_in = [1, 32, 32, 64, 64, 128],
        prosody_conv_dim_out = [32, 32, 64, 64, 128, 128],
        prosody_conv_kernel = 3,
        prosody_conv_stride = 2,
        prosody_embedding_dim = 128,

        # Decoder parameters
        n_frames_per_step=1,  # currently only 1 is supported
        decoder_rnn_dim=1024,
        prenet_dim=256,
        max_decoder_steps=1000,
        gate_threshold=0.5,
        p_attention_dropout=0.1,
        p_decoder_dropout=0.1,

        # Attention parameters
        attention_rnn_dim=1024,
        attention_dim=128,

        # Location Layer parameters
        attention_location_n_filters=32,
        attention_location_kernel_size=31,

        # Mel-post processing network parameters
        postnet_embedding_dim=512,
        postnet_kernel_size=5,
        postnet_n_convolutions=5,

        ################################
        # Optimization Hyperparameters #
        ################################
        use_saved_learning_rate=False,
        learning_rate=1e-3,
        weight_decay=1e-6,
        grad_clip_thresh=1.0,
        batch_size=64,
        mask_padding=True,  # set model's padded outputs to padded values

        #######################3
        # reference encoder
        E = 512,
        ref_enc_filters = [32, 32, 64, 64, 128, 128],
        ref_enc_size = [3, 3],
        ref_enc_strides = [2, 2],
        ref_enc_pad = [1, 1],
        ref_enc_gru_size = 512 // 2,

        # Style Token Layer
        token_num = 10,
        num_heads = 8,
        n_mels = 80,
    )

    if hparams_string:
        tf.logging.info('Parsing command line hparams: %s', hparams_string)
        hparams.parse(hparams_string)

    if verbose:
        tf.logging.info('Final parsed hparams: %s', hparams.values())

    return hparams