     }
      }


      // Represents the 'k-rate' AudioParam automation rate.
      const K_RATE = 'k-rate';
      // Defines the size of one audio processing block (render quantum)
      // in frames.
      const BLOCK = 128;
      // Arbitrary sample rate and duration.
      const SAMPLE_RATE = 8000;

      // Define a test where we verify that a k-rate audio param produces
      // different results from an a-rate audio param for each of the audio
      // params of a biquad.
      //
      // Each entry