    listener.forwardY.value = 1;
          listener.forwardZ.value = -1;
          // Make the up vector not parallel or perpendicular to the forward and
          // position vectors so that automations of the up vector produce
          // noticeable differences.
          listener.upX.value = 1;
          listener.upY.value = 1;
          listener.upZ.value = 2;

          const audioParam = listener[param.name];
          audioParam.automationRate = K_RATE;
          assert_equals(
            audioPara