| | from lib.infer_pack.modules.F0Predictor.F0Predictor import F0Predictor
|
| | import pyworld
|
| | import numpy as np
|
| |
|
| |
|
| | class HarvestF0Predictor(F0Predictor):
|
| | def __init__(self, hop_length=512, f0_min=50, f0_max=1100, sampling_rate=44100):
|
| | self.hop_length = hop_length
|
| | self.f0_min = f0_min
|
| | self.f0_max = f0_max
|
| | self.sampling_rate = sampling_rate
|
| |
|
| | def interpolate_f0(self, f0):
|
| | """
|
| | 对F0进行插值处理
|
| | """
|
| |
|
| | data = np.reshape(f0, (f0.size, 1))
|
| |
|
| | vuv_vector = np.zeros((data.size, 1), dtype=np.float32)
|
| | vuv_vector[data > 0.0] = 1.0
|
| | vuv_vector[data <= 0.0] = 0.0
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| |
|
| | ip_data = data
|
| |
|
| | frame_number = data.size
|
| | last_value = 0.0
|
| | for i in range(frame_number):
|
| | if data[i] <= 0.0:
|
| | j = i + 1
|
| | for j in range(i + 1, frame_number):
|
| | if data[j] > 0.0:
|
| | break
|
| | if j < frame_number - 1:
|
| | if last_value > 0.0:
|
| | step = (data[j] - data[i - 1]) / float(j - i)
|
| | for k in range(i, j):
|
| | ip_data[k] = data[i - 1] + step * (k - i + 1)
|
| | else:
|
| | for k in range(i, j):
|
| | ip_data[k] = data[j]
|
| | else:
|
| | for k in range(i, frame_number):
|
| | ip_data[k] = last_value
|
| | else:
|
| | ip_data[i] = data[i]
|
| | last_value = data[i]
|
| |
|
| | return ip_data[:, 0], vuv_vector[:, 0]
|
| |
|
| | def resize_f0(self, x, target_len):
|
| | source = np.array(x)
|
| | source[source < 0.001] = np.nan
|
| | target = np.interp(
|
| | np.arange(0, len(source) * target_len, len(source)) / target_len,
|
| | np.arange(0, len(source)),
|
| | source,
|
| | )
|
| | res = np.nan_to_num(target)
|
| | return res
|
| |
|
| | def compute_f0(self, wav, p_len=None):
|
| | if p_len is None:
|
| | p_len = wav.shape[0] // self.hop_length
|
| | f0, t = pyworld.harvest(
|
| | wav.astype(np.double),
|
| | fs=self.hop_length,
|
| | f0_ceil=self.f0_max,
|
| | f0_floor=self.f0_min,
|
| | frame_period=1000 * self.hop_length / self.sampling_rate,
|
| | )
|
| | f0 = pyworld.stonemask(wav.astype(np.double), f0, t, self.fs)
|
| | return self.interpolate_f0(self.resize_f0(f0, p_len))[0]
|
| |
|
| | def compute_f0_uv(self, wav, p_len=None):
|
| | if p_len is None:
|
| | p_len = wav.shape[0] // self.hop_length
|
| | f0, t = pyworld.harvest(
|
| | wav.astype(np.double),
|
| | fs=self.sampling_rate,
|
| | f0_floor=self.f0_min,
|
| | f0_ceil=self.f0_max,
|
| | frame_period=1000 * self.hop_length / self.sampling_rate,
|
| | )
|
| | f0 = pyworld.stonemask(wav.astype(np.double), f0, t, self.sampling_rate)
|
| | return self.interpolate_f0(self.resize_f0(f0, p_len))
|
| |
|
