docstr: Creates some common default values for the test sinusoid.
docstr_tok: ["Creates","some","common","default","values","for","the","test","sinusoid","."]
code: def setUp(self):
      """Creates some common default values for the test sinusoid."""
      super().setUp()
      self.amp = 0.75
      self.frequency = 440.0
      self.frame_rate = 250
      self.frame_size = 512
  
imports: from absl.testing import parameterized
  from ddsp import spectral_ops
  from ddsp.test_util import gen_np_sinusoid
  import numpy
  import tensorflow.compat.v2
label_desc: Use image node_id 1 for calling the ComputeFeaturesTest obj's underlying member method code with example usage: obj.setUp() without return types