code: def test_compute_deltas(self):
      transform = T.ComputeDeltas()
      spec = torch.rand(10, 20)
      self.assert_grad(transform, [spec])
  
imports: import unittest
  from typing import List
  import torch
  import torchaudio.transforms
  from parameterized import parameterized
  from torch.autograd import gradcheck, gradgradcheck
  from torchaudio_unittest.common_utils import get_spectrogram, get_whitenoise, nested_params, rnnt_utils, TestBaseMixin
label_desc: Use image node_id 8 for calling the AutogradTestMixin obj's underlying member method code with example usage: obj.test_compute_deltas() without return types