26 lines
855 B
Python
26 lines
855 B
Python
import numpy as np
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class Utterance:
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def __init__(self, frames_fpath, wave_fpath):
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self.frames_fpath = frames_fpath
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self.wave_fpath = wave_fpath
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def get_frames(self):
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return np.load(self.frames_fpath)
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def random_partial(self, n_frames):
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"""
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Crops the frames into a partial utterance of n_frames
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:param n_frames: The number of frames of the partial utterance
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:return: the partial utterance frames and a tuple indicating the start and end of the
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partial utterance in the complete utterance.
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"""
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frames = self.get_frames()
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if frames.shape[0] == n_frames:
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start = 0
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else:
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start = np.random.randint(0, frames.shape[0] - n_frames)
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end = start + n_frames
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return frames[start:end], (start, end) |