code: def test_phaser(self, sinusoidal):
      sr = 8000
      x = get_whitenoise(sample_rate=sr, duration=0.01, n_channels=1)
      self.assert_grad(F.phaser, (x, sr, sinusoidal))
  
imports: from functools import partial
  from typing import Callable, Tuple
  import torch
  import torchaudio.functional
  from parameterized import parameterized
  from torch import Tensor
  from torch.autograd import gradcheck, gradgradcheck
  from torchaudio_unittest.common_utils import get_spectrogram, get_whitenoise, nested_params, rnnt_utils, TestBaseMixin, use_deterministic_algorithms
label_desc: Use image node_id 26 for calling the Autograd obj's underlying member method code with example usage: obj.test_phaser(sinusoidal) without return types