docstr: frequency_impulse_response produces the same result as reference implementation
docstr_tok: ["frequency_impulse_response","produces","the","same","result","as","reference","implementation"]
code: def test_freq_ir_reference(self, shape):
      """frequency_impulse_response produces the same result as reference implementation"""
      magnitudes = torch.rand(
          shape, device=self.device, dtype=self.dtype
      )
  
      hyp = F.frequency_impulse_response(magnitudes)
      ref = freq_ir_np(magnitudes.cpu().numpy())
  
      self.assertEqual(hyp, ref)
  
imports: import torch
  import torchaudio.prototype.functional
  from parameterized import param, parameterized
  from torchaudio_unittest.common_utils import nested_params, TestBaseMixin
  from .dsp_utils import exp_sigmoid, freq_ir, oscillator_bank, sinc_ir
label_desc: Use image node_id 9 for calling the FunctionalTestImpl obj's underlying member method code with example usage: obj.test_freq_ir_reference(shape) without return types