32 lines
950 B
Python
32 lines
950 B
Python
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"""Contain the resample augmentation model."""
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import numpy as np
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from mvector.data_utils.audio import AudioSegment
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from mvector.data_utils.augmentor.base import AugmentorBase
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class ResampleAugmentor(AugmentorBase):
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"""重采样的增强模型
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See more info here:
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https://ccrma.stanford.edu/~jos/resample/index.html
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:param new_sample_rate: New sample rate in Hz.
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:type new_sample_rate: int
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"""
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def __init__(self, new_sample_rate: list):
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self._new_sample_rate = new_sample_rate
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def transform_audio(self, audio_segment: AudioSegment):
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"""Resamples the input audio to a target sample rate.
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Note that this is an in-place transformation.
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:param audio_segment: Audio segment to add effects to.
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:type audio_segment: AudioSegment|SpeechSegment
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"""
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_new_sample_rate = np.random.choice(self._new_sample_rate)
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audio_segment.resample(_new_sample_rate)
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