DSP Robotics Support

I am looking for information how to make a morphing. it possible to morph between two wave use wavetables?
I found only this example.
http://www.dsprobotics.com/support/view ... t=morphing
But I would like to use the wavetables, is it possible? can somebody tell me the formula?

Something like this?

yes it is, exactly. But is it morphing? I thought it was just a mixing.
But in any case this is what I wanted, thank you.