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# DPTNet_quant_sep.py
import os
import torch
import numpy as np
import torchaudio
from huggingface_hub import hf_hub_download
from . import asteroid_test
torchaudio.set_audio_backend("sox_io")
def get_conf():
conf_filterbank = {
'n_filters': 64,
'kernel_size': 16,
'stride': 8
}
conf_masknet = {
'in_chan': 64,
'n_src': 2,
'out_chan': 64,
'ff_hid': 256,
'ff_activation': "relu",
'norm_type': "gLN",
'chunk_size': 100,
'hop_size': 50,
'n_repeats': 2,
'mask_act': 'sigmoid',
'bidirectional': True,
'dropout': 0
}
return conf_filterbank, conf_masknet
def load_dpt_model():
print('Load Separation Model...')
# 從環境變數取得 Hugging Face Token
HF_TOKEN = os.getenv("HF_TOKEN")
if not HF_TOKEN:
raise EnvironmentError("環境變數 HF_TOKEN 未設定！請先執行 export HF_TOKEN=xxx")
# 從 Hugging Face Hub 下載模型權重
model_path = hf_hub_download(
repo_id="DeepLearning101/speech-separation", # ← 替換成你的 repo 名稱
filename="train_dptnet_aishell_partOverlap_B2_300epoch_quan-int8.p",
token=HF_TOKEN
)
# 取得模型參數
conf_filterbank, conf_masknet = get_conf()
# 建立模型架構
model_class = getattr(asteroid_test, "DPTNet")
model = model_class(**conf_filterbank, **conf_masknet)
# 套用量化設定
model = torch.quantization.quantize_dynamic(
model,
{torch.nn.LSTM, torch.nn.Linear},
dtype=torch.qint8
)
# 載入權重（忽略不匹配的 keys）
state_dict = torch.load(model_path, map_location="cpu")
model_state_dict = model.state_dict()
filtered_state_dict = {k: v for k, v in state_dict.items() if k in model_state_dict}
model.load_state_dict(filtered_state_dict, strict=False)
model.eval()
return model
def dpt_sep_process(wav_path, model=None, outfilename=None):
if model is None:
model = load_dpt_model()
x, sr = torchaudio.load(wav_path)
x = x.cpu()
with torch.no_grad():
est_sources = model(x) # shape: (1, 2, T)
est_sources = est_sources.squeeze(0) # shape: (2, T)
sep_1, sep_2 = est_sources # 拆成兩個 (T,) 的 tensor
# 正規化
max_abs = x[0].abs().max().item()
sep_1 = sep_1 * max_abs / sep_1.abs().max().item()
sep_2 = sep_2 * max_abs / sep_2.abs().max().item()
# 增加 channel 維度，變為 (1, T)
sep_1 = sep_1.unsqueeze(0)
sep_2 = sep_2.unsqueeze(0)
# 儲存結果
if outfilename is not None:
torchaudio.save(outfilename.replace('.wav', '_sep1.wav'), sep_1, sr)
torchaudio.save(outfilename.replace('.wav', '_sep2.wav'), sep_2, sr)
torchaudio.save(outfilename.replace('.wav', '_mix.wav'), x, sr)
else:
torchaudio.save(wav_path.replace('.wav', '_sep1.wav'), sep_1, sr)
torchaudio.save(wav_path.replace('.wav', '_sep2.wav'), sep_2, sr)
if __name__ == '__main__':
print("This module should be used via Flask or Gradio.") |