74 lines
2.6 KiB
Python
74 lines
2.6 KiB
Python
import numpy as np
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import pyworld
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from modules.F0Predictor.F0Predictor import F0Predictor
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class DioF0Predictor(F0Predictor):
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def __init__(self,hop_length=512,f0_min=50,f0_max=1100,sampling_rate=44100):
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self.hop_length = hop_length
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self.f0_min = f0_min
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self.f0_max = f0_max
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self.sampling_rate = sampling_rate
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def interpolate_f0(self,f0):
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'''
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对F0进行插值处理
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'''
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vuv_vector = np.zeros_like(f0, dtype=np.float32)
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vuv_vector[f0 > 0.0] = 1.0
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vuv_vector[f0 <= 0.0] = 0.0
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nzindex = np.nonzero(f0)[0]
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data = f0[nzindex]
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nzindex = nzindex.astype(np.float32)
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time_org = self.hop_length / self.sampling_rate * nzindex
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time_frame = np.arange(f0.shape[0]) * self.hop_length / self.sampling_rate
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if data.shape[0] <= 0:
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return np.zeros(f0.shape[0], dtype=np.float32),vuv_vector
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if data.shape[0] == 1:
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return np.ones(f0.shape[0], dtype=np.float32) * f0[0],vuv_vector
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f0 = np.interp(time_frame, time_org, data, left=data[0], right=data[-1])
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return f0,vuv_vector
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def resize_f0(self,x, target_len):
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source = np.array(x)
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source[source<0.001] = np.nan
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target = np.interp(np.arange(0, len(source)*target_len, len(source))/ target_len, np.arange(0, len(source)), source)
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res = np.nan_to_num(target)
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return res
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def compute_f0(self,wav,p_len=None):
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if p_len is None:
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p_len = wav.shape[0]//self.hop_length
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f0, t = pyworld.dio(
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wav.astype(np.double),
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fs=self.sampling_rate,
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f0_floor=self.f0_min,
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f0_ceil=self.f0_max,
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frame_period=1000 * self.hop_length / self.sampling_rate,
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)
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f0 = pyworld.stonemask(wav.astype(np.double), f0, t, self.sampling_rate)
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for index, pitch in enumerate(f0):
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f0[index] = round(pitch, 1)
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return self.interpolate_f0(self.resize_f0(f0, p_len))[0]
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def compute_f0_uv(self,wav,p_len=None):
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if p_len is None:
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p_len = wav.shape[0]//self.hop_length
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f0, t = pyworld.dio(
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wav.astype(np.double),
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fs=self.sampling_rate,
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f0_floor=self.f0_min,
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f0_ceil=self.f0_max,
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frame_period=1000 * self.hop_length / self.sampling_rate,
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)
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f0 = pyworld.stonemask(wav.astype(np.double), f0, t, self.sampling_rate)
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for index, pitch in enumerate(f0):
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f0[index] = round(pitch, 1)
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return self.interpolate_f0(self.resize_f0(f0, p_len))
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