code: def test_highpass(self):
      cutoff_freq = 2000
      sample_rate = 8000
  
      data, path = self.get_whitenoise(sample_rate)
      result = F.highpass_biquad(data, sample_rate, cutoff_freq)
      self.assert_sox_effect(
          result, path, ["highpass", cutoff_freq], atol=1.5e-4
      )
  
imports: import torch
  import torchaudio.functional
  from torchaudio_unittest.common_utils import get_asset_path, get_whitenoise, load_wav, save_wav, skipIfNoExec, skipIfNoSox, sox_utils, TempDirMixin, TorchaudioTestCase
label_desc: Use image node_id 8 for calling the TestFunctionalFiltering obj's underlying member method code with example usage: obj.test_highpass() without return types