22 lines
557 B
Python
22 lines
557 B
Python
from typing import Union
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import numpy as np
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class Normalize(object):
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def __init__(self, min_db_level: Union[int, float]):
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self.min_db_level = min_db_level
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def __call__(self, s: np.ndarray) -> np.ndarray:
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return np.clip((s - self.min_db_level) / -self.min_db_level, 0, 1)
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class DeNormalize(object):
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def __init__(self, min_db_level: Union[int, float]):
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self.min_db_level = min_db_level
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def __call__(self, s: np.ndarray) -> np.ndarray:
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return (np.clip(s, 0, 1) * -self.min_db_level) + self.min_db_level
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