code: def test_correct_parameters_multi_channels(
      self, type, length, frequency
  ):
      self.assertIsInstance(
          SignalContinuousWavelet(type, length, frequency),
          SignalContinuousWavelet,
      )
      sig = np.load(TEST_SIGNAL)
      cwt = SignalContinuousWavelet(type, length, frequency)
      cwtsignal = cwt(sig)
      self.assertEqual(cwtsignal.shape, EXPECTED_RESULTS[0])
  
file_path: MONAI/tests/test_signal_continuouswavelet.py
imports: from __future__ import annotations
  import os
  import unittest
  from unittest import skipUnless
  import numpy
  from parameterized import parameterized
  from monai.transforms import SignalContinuousWavelet
  from monai.utils import optional_import
label_desc: Use image node_id 1 for calling the TestSignalContinousWavelet obj's underlying member method code with example usage: obj.test_correct_parameters_multi_channels(type, length, frequency) without return types