 gives the name of the AudioParam, an initial value to be
      // used with setValueAtTime, and a final value to be used with
      // linearRampToValueAtTime. (See |doTest| for details as well.)

      const pannerParams = [
        {name: 'positionX', initial: 0, final: 1000},
        {name: 'positionY', initial: 0, final: 1000},
        {name: 'orientationX', initial: 1, final: 10},
        {name: 'orientationY', initial: 1, final: 10},
        {name: 'orientationZ', initial: 1, final: 10},
      ];

  