? diff morph/fade

[Martin Czech]

> I can seem to understand what the difference between morping and fadeing
> is.
> 

My $0.02:

>From your drawing I can see that you did "adding", or linear combination.
The Fourier Transformation is -like many others- linear.  So it does'nt
really matter if you add your signals in time or frequency domain.

Linear combining is NOT morphing.

Morphing is more like recognizing the differences between two spectra A
and B and then moving from one to the other, but the in between spectra
are no simple linear combinations of A and B.  

Like: oh, A has same strong formant there which B hasn't, but B  has
something high frequency here, so best is to take some of the high
frequency stuff from B in order to modell  the formant of A.
I will need to create some intermediate formants to do this.


The end results of linear combining and morphing are allways A and B,
but the intermediate ways can be much different.

The algorithm for adding is simple, for morphing you need to derive
some properties from a given input, and that is not simple at all.

That's my understanding of morphing.

Of course, if you combine many morphing intermediate stages in a linear
way this will lead to a process very similar to continous morphing.

Or, to confuse you even more:
Linear combining will not show any new partials which were not part
of A or B, but morphing could do so.

m.c.