code: def testDb2Lin(self):
      # remove the last element because it causes an overflow because it is
      # too large
      self.assertAlmostEqualVector(
          UnaryOperator(type="db2lin")(self.testInput[:-1]),
          [
              1.25892544,
              1.58489323,
              1.99526227,
              2.51188636,
              2.18776178,
              0.3161695,
          ],
          2e-7,
      )
  
imports: from essentia_test import *
label_desc: Use image node_id 12 for calling the TestUnaryOperator obj's underlying member method code with example usage: obj.testDb2Lin() without return types