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50 lines
1.7 KiB
Python
50 lines
1.7 KiB
Python
import pyworld
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import numpy as np
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from const import PitchExtractorType
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from voice_changer.DiffusionSVC.pitchExtractor.PitchExtractor import PitchExtractor
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from voice_changer.utils.VoiceChangerModel import AudioInOut
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class DioPitchExtractor(PitchExtractor):
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def __init__(self):
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super().__init__()
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self.pitchExtractorType: PitchExtractorType = "dio"
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self.f0_min = 50
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self.f0_max = 1100
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# self.sapmle_rate = 44100
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# self.sapmle_rate = 16000
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self.uv_interp = True
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def extract(self, audio: AudioInOut, sr: int, block_size: int, model_sr: int, pitch, f0_up_key, silence_front=0):
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silence_front: int = 0. # TODO: chunkサイズが小さいときに音程を取れなくなる対策
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hop_size = block_size * sr / model_sr
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offset_frame_number = silence_front * sr
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start_frame = int(offset_frame_number / hop_size) # frame
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real_silence_front = start_frame * hop_size / sr # 秒
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audio = audio[int(np.round(real_silence_front * sr)):]
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_f0, t = pyworld.dio(
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audio.astype(np.double),
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sr,
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f0_floor=self.f0_min,
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f0_ceil=self.f0_max,
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channels_in_octave=2,
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frame_period=(1000 * hop_size / sr)
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)
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f0 = pyworld.stonemask(audio.astype(np.double), _f0, t, sr)
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pitch[-f0.shape[0]:] = f0[:pitch.shape[0]]
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f0 = pitch
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if self.uv_interp:
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uv = f0 == 0
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if len(f0[~uv]) > 0:
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f0[uv] = np.interp(np.where(uv)[0], np.where(~uv)[0], f0[~uv])
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f0[f0 < self.f0_min] = self.f0_min
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f0 = f0 * 2 ** (float(f0_up_key) / 12)
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return f0
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