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@ -30,6 +30,16 @@ logger = Log(__name__).getlog()
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@dataclass
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class meta_info:
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"""the audio meta info in the vector CSVDataset
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Args:
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utt_id (str): the utterance segment name
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duration (float): utterance segment time
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wav (str): utterance file path
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start (int): start point in the original wav file
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stop (int): stop point in the original wav file
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lab_id (str): the utterance segment's label id
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"""
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utt_id: str
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duration: float
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wav: str
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@ -39,18 +49,30 @@ class meta_info:
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class CSVDataset(Dataset):
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# meta_info = collections.namedtuple(
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# 'META_INFO', ('id', 'duration', 'wav', 'start', 'stop', 'spk_id'))
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def __init__(self, csv_path, spk_id2label_path=None, config=None):
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"""Implement the CSV Dataset
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Args:
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csv_path (str): csv dataset file path
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spk_id2label_path (str): the utterance label to integer id map file path
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config (CfgNode): yaml config
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"""
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super().__init__()
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self.csv_path = csv_path
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self.spk_id2label_path = spk_id2label_path
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self.config = config
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self.spk_id2label = {}
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self.label2spk_id = {}
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self.data = self.load_data_csv()
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self.spk_id2label = self.load_speaker_to_label()
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self.load_speaker_to_label()
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def load_data_csv(self):
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"""Load the csv dataset content and store them in the data property
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the csv dataset's format has six fields,
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that is audio_id or utt_id, audio duration, segment start point, segment stop point
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and utterance label.
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Note in training period, the utterance label must has a map to integer id in spk_id2label_path
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"""
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data = []
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with open(self.csv_path, 'r') as rf:
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@ -64,18 +86,28 @@ class CSVDataset(Dataset):
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return data
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def load_speaker_to_label(self):
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"""Load the utterance label map content.
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In vector domain, we call the utterance label as speaker label.
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The speaker label is real speaker label in speaker verification domain,
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and in language identification is language label.
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"""
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if not self.spk_id2label_path:
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logger.warning("No speaker id to label file")
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return
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spk_id2label = {}
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self.spk_id2label = {}
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self.label2spk_id = {}
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with open(self.spk_id2label_path, 'r') as f:
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for line in f.readlines():
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spk_id, label = line.strip().split(' ')
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spk_id2label[spk_id] = int(label)
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return spk_id2label
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self.spk_id2label[spk_id] = int(label)
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self.label2spk_id[int(label)] = spk_id
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def convert_to_record(self, idx: int):
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"""convert the dataset sample to training record the CSV Dataset
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Args:
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idx (int) : the request index in all the dataset
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"""
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sample = self.data[idx]
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record = {}
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@ -104,7 +136,14 @@ class CSVDataset(Dataset):
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return record
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def __getitem__(self, idx):
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"""Return the specific index sample
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Args:
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idx (int) : the request index in all the dataset
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"""
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return self.convert_to_record(idx)
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def __len__(self):
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"""Return the dataset length
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"""
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return len(self.data)
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