setting uv = f0 = 0 before normalize?

[Cescfangs]

Hey guys, I found you set uv = f0 = 0 at line 57, what's the intension behind this?

NATSpeech/utils/audio/pitch/utils.py

Lines 52 to 58 in aef3aa8

	def norm_interp_f0(f0, pitch_norm='log', f0_mean=None, f0_std=None):
	is_torch = isinstance(f0, torch.Tensor)
	if is_torch:
	device = f0.device
	f0 = f0.data.cpu().numpy()
	uv = f0 == 0
	f0 = norm_f0(f0, uv, pitch_norm, f0_mean, f0_std)

BTW, I found same issue in DiffSinger MoonInTheRiver/DiffSinger#47

[Cescfangs]

sorry, I'vs missed the ==