mirror of https://github.com/coqui-ai/TTS.git
132 lines
4.3 KiB
Python
132 lines
4.3 KiB
Python
import copy
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import os
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import unittest
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import torch
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from torch import optim
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from tests import get_tests_input_path
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from TTS.tts.layers.losses import GlowTTSLoss
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from TTS.tts.models.glow_tts import GlowTTS
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from TTS.utils.audio import AudioProcessor
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from TTS.utils.io import load_config
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# pylint: disable=unused-variable
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torch.manual_seed(1)
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use_cuda = torch.cuda.is_available()
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device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")
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c = load_config(os.path.join(get_tests_input_path(), "test_config.json"))
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ap = AudioProcessor(**c.audio)
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WAV_FILE = os.path.join(get_tests_input_path(), "example_1.wav")
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def count_parameters(model):
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r"""Count number of trainable parameters in a network"""
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return sum(p.numel() for p in model.parameters() if p.requires_grad)
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class GlowTTSTrainTest(unittest.TestCase):
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@staticmethod
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def test_train_step():
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input_dummy = torch.randint(0, 24, (8, 128)).long().to(device)
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input_lengths = torch.randint(100, 129, (8,)).long().to(device)
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input_lengths[-1] = 128
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mel_spec = torch.rand(8, c.audio["num_mels"], 30).to(device)
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mel_lengths = torch.randint(20, 30, (8,)).long().to(device)
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speaker_ids = torch.randint(0, 5, (8,)).long().to(device)
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criterion = GlowTTSLoss()
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# model to train
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model = GlowTTS(
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num_chars=32,
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hidden_channels_enc=48,
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hidden_channels_dec=48,
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hidden_channels_dp=32,
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out_channels=80,
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encoder_type="rel_pos_transformer",
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encoder_params={
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"kernel_size": 3,
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"dropout_p": 0.1,
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"num_layers": 6,
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"num_heads": 2,
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"hidden_channels_ffn": 16, # 4 times the hidden_channels
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"input_length": None,
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},
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use_encoder_prenet=True,
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num_flow_blocks_dec=12,
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kernel_size_dec=5,
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dilation_rate=1,
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num_block_layers=4,
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dropout_p_dec=0.0,
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num_speakers=0,
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c_in_channels=0,
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num_splits=4,
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num_squeeze=1,
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sigmoid_scale=False,
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mean_only=False,
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).to(device)
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# reference model to compare model weights
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model_ref = GlowTTS(
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num_chars=32,
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hidden_channels_enc=48,
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hidden_channels_dec=48,
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hidden_channels_dp=32,
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out_channels=80,
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encoder_type="rel_pos_transformer",
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encoder_params={
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"kernel_size": 3,
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"dropout_p": 0.1,
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"num_layers": 6,
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"num_heads": 2,
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"hidden_channels_ffn": 16, # 4 times the hidden_channels
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"input_length": None,
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},
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use_encoder_prenet=True,
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num_flow_blocks_dec=12,
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kernel_size_dec=5,
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dilation_rate=1,
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num_block_layers=4,
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dropout_p_dec=0.0,
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num_speakers=0,
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c_in_channels=0,
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num_splits=4,
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num_squeeze=1,
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sigmoid_scale=False,
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mean_only=False,
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).to(device)
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model.train()
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print(" > Num parameters for GlowTTS model:%s" % (count_parameters(model)))
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# pass the state to ref model
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model_ref.load_state_dict(copy.deepcopy(model.state_dict()))
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count = 0
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for param, param_ref in zip(model.parameters(), model_ref.parameters()):
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assert (param - param_ref).sum() == 0, param
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count += 1
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optimizer = optim.Adam(model.parameters(), lr=0.001)
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for _ in range(5):
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optimizer.zero_grad()
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z, logdet, y_mean, y_log_scale, alignments, o_dur_log, o_total_dur = model.forward(
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input_dummy, input_lengths, mel_spec, mel_lengths, None
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)
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loss_dict = criterion(z, y_mean, y_log_scale, logdet, mel_lengths, o_dur_log, o_total_dur, input_lengths)
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loss = loss_dict["loss"]
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loss.backward()
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optimizer.step()
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# check parameter changes
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count = 0
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for param, param_ref in zip(model.parameters(), model_ref.parameters()):
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assert (param != param_ref).any(), "param {} with shape {} not updated!! \n{}\n{}".format(
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count, param.shape, param, param_ref
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)
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count += 1
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