code: def test_deltas(device):
      from speechbrain.processing.features import Deltas
  
      size = [10, 101, 20]
      inp = torch.ones(size, device=device)
      compute_deltas = Deltas(input_size=20).to(device)
      out = torch.zeros(size, device=device)
      assert torch.sum(compute_deltas(inp) == out) == out.numel()
  
      assert torch.jit.trace(compute_deltas, inp)
  
imports: import torch
label_desc: Use image node_id 1 for calling a global function with example usage: test_deltas(device) without return types