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I think Morph is a good term for this. A crossfade, at least to me, means
mixing two different soundsorces, so that one starts with only one sounding,
and then decrease that one at the same time as one increases the level of
the other one, until only the second is heard. The morph means gradually
changing the parameter settings of a sound towards those of another sound,
not mixing the two different sounds together in varying amounts.

Just my 2

/Patrik

---
The primary purpose of wings is to prevent flight

Hi

I would guess Gary is the natural recipient of this message, but of 
course anybody is welcome to comment. In p.36 of the PLG150-AN manual 
under Mrph CtrlNo it says: 

"...MIDI Controller....is used to 'morph' or crossfade between two 
different voices."

To me this is a prime example of how new terms are being introduced 
and used without having been sufficiently explained in the first 
place. I think the first time I saw the term crossfade was in the 
70's when I got some pieces of Serge modular synths. Crossfade simply 
meant and still means to have one voice or oscillator or other source 
of sound fade out while another is fading in. IMHO morphing is 
something totally different. From what I can recall, it was first 
used in the movie industry to have one visual object gradually 
transform into another, "Terminator II" has lots of these effects. 

Translated to synthesizer techniques this should mean that one sound 
morphs into another by gradual changes of parameters like waveforms, 
envelopes, filter settings like center frequency, resonance, etc. Am 
I right, or ....? 
 
Regards,
Lars Arnwald
lars.l.arnwald@...

The term 'morph' is used because there are Multiple functions that are
cross faded!

If it used all of the AN's parameters to 'morph' with then I suppose you
could call it a true Crossfade, but as the AN's 'Morph' function only
crossfades SOME of the AN's parameters then  I  suppose 'Morph' is the
correct term.




In article <9fuaeo+8n9l@...>, lars.l.arnwald@... writes
>Hi
>
>I would guess Gary is the natural recipient of this message, but of 
>course anybody is welcome to comment. In p.36 of the PLG150-AN manual 
>under Mrph CtrlNo it says: 
>
>"...MIDI Controller....is used to 'morph' or crossfade between two 
>different voices."
>
>To me this is a prime example of how new terms are being introduced 
>and used without having been sufficiently explained in the first 
>place. I think the first time I saw the term crossfade was in the 
>70's when I got some pieces of Serge modular synths. Crossfade simply 
>meant and still means to have one voice or oscillator or other source 
>of sound fade out while another is fading in. IMHO morphing is 
>something totally different. From what I can recall, it was first 
>used in the movie industry to have one visual object gradually 
>transform into another, "Terminator II" has lots of these effects. 
>
>Translated to synthesizer techniques this should mean that one sound 
>morphs into another by gradual changes of parameters like waveforms, 
>envelopes, filter settings like center frequency, resonance, etc. Am 
>I right, or ....? 
> 
>Regards,
>Lars Arnwald
>lars.l.arnwald@...
>
>
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See ya,

Reggie

Thanks a lot Reggie, I guess I should sit down for myself and really 
try out what morphing does. Unfortunately my work situation will keep 
me bogged down for another couple of weeks leaving very little time 
for music.

I was just hoping to shed a little more light into some of the 
technical foundations of the PLG150-AN. What I really was aiming for 
is this though. 

Does morphing in effect turn the PLG into a 2 voice, bi-timbral synth 
with the same pitch relationship between voices regardless of what 
note being played, and where MIDI Control (or AT) raises the volume 
of one voice while lowering the other?

Regards,
Lars Arnwald
lars.l.arnwald@...

In article <9fv2ou+sbvt@...>, lars.l.arnwald@... writes
>Thanks a lot Reggie, I guess I should sit down for myself and really 
>try out what morphing does. Unfortunately my work situation will keep 
>me bogged down for another couple of weeks leaving very little time 
>for music.
No problem.

>
>I was just hoping to shed a little more light into some of the 
>technical foundations of the PLG150-AN. What I really was aiming for 
>is this though. 
>
>Does morphing in effect turn the PLG into a 2 voice, bi-timbral synth 
>with the same pitch relationship between voices regardless of what 
>note being played, and where MIDI Control (or AT) raises the volume 
>of one voice while lowering the other?
No not really, 'cos that would be a crossfade type of thing, but as we
are dealing with Specific Data Values and not the whole Sound, Check out
Page 36 of plg150ane.pdf, it will give you a list of all the values that
are morphed.

Here is what I think will happen, it will look at all the 'morph'
functions on the 'Host' instrument, then it will look at the morph
instrument, Then it will raise or Lower (Depending on the Values set on
each instrument!)

So, Although VCA Volume is one of the Parameters that is morphed,
whether the Volume gets raised or lowered will depend on the 2 volume
values,  So with VCA Vol. on the Host Instrument set to 55 and on the
Morph instrument set to 100 then there will be a sweep from 55 to 100.




>
>Regards,
>Lars Arnwald
>lars.l.arnwald@...
>
>
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See ya,

Reggie

Hi Lars,

Generally the term cross-fade applies where the source and target
objects are static. i.e. you are merely mixing the amplitude of the two
objects to produce an 'apparent' new object. Thus to the observer the
object fades from one object to another (i.e. the source object becomes
less dominant over time whereas the target becomes more dominant).
However over the whole period there are in fact two discrete objects in
operation, you never really create a third object.

The term morph comes from the Greek meaning shape or form. It is
generally used where an object is changing its characteristics over
time. i.e. the object is not a composite of two or more other objects,
but is in fact an independent object that is evolving. The
characteristics of the object are derived from those of a source and
target objects but the resultant object is a completely separate entity.
The observer only observes the intermediate object states... you could
never separate out the source/target components!  

Hence Reggie is basically correct. Perhaps the easiest way to understand
the function of the PLG150AN is:

a) The operation is NOT an audio cross-fade between two different
sounds. You only have one set of sound generation parameters active and
one set of hardware upon which they operate. Therefore you do not have
any form of bi-timbrality involved. At any instance, the machine is only
using a single set of parameters to generate a single timbre.

b) The operation IS a numerical interpolation between two sets of sound
generation parameters to produce a third set. Basically the algorithm
smoothly changes a given number of parameters between the source patch
values and the target patch values. At each instance the algorithm uses
the current interpolated value of each parameter and applies them to the
sound generators, thus producing a single timbre.

Therefore the manual is wrong to describe the AN morph function as a
cross-fade (although it is understandable why the author used this term
in an attempt to convey the effect)

Note: To some extent the freeware AN Genetix program performs a similar
task to the AN morph function; albeit in an offline manner. It produces
a whole bunch of static patches that contain interpolated values between
two start patches. Therefore each Genetix patch is an intermediate morph
result.

The built in An1xEdit randomise function is not a morph or a crossfade,
since in this case only the source patch characteristics are considered.
There is no target patch contribution. Random values are simply added to
the starting parameters. (The end result is simply another patch that
may or may not resemble the original, depending on the severity of the
random offsets).

I hope that clarifies things for you. 

Regards

Gary Gregson

Email:gary@...
http://www.yme.co.uk/yme

Hi Gary,

Thank you very much for your outstanding description of morphing. I 
really hadn't expected it to provide bi-timbrality, but I must admit 
that the manual's use of the term crossfade triggered my curiousity. 

Still, I'm sitting with a bunch of other synths, getting bi- or multi-
timbrality really isn't any problem to me.

Thanks again,
Lars
lars.l.arnwald@...

Hi everyone

Are there any other synths with sound morhphing abilities.

Sure is a nice feature

Erkki

Korg Prophecy

> -----Original Message-----
> From: e_mannikko [mailto:e_mannikko@...]
> Sent: 22 February 2002 00:38
> To: AN1x-list@yahoogroups.com
> Subject: [AN1x] Morphing
>
>
> Hi everyone
>
> Are there any other synths with sound morhphing abilities.
>
> Sure is a nice feature
>
> Erkki
>
>
>
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...or even the Korg Wavestation. Vector Synthesis, as 
implemented on the WS, allows you to mix the balance of up to 
four seperate sounds consisting of multiple Osc each. And of 
course the vecotr envelopes can be preprogrammed or 
controlled dynamically.

Also, the E-mu Morpheus with its Z-Plane filter technology 
allowed for some really far out morphing of sounds. Great for 
thos scifi moments...The derivatives of the Z-Plane filters have 
been implemented in E-mu's seemingly endless, and 
redundant, supply of Proteus knock offs but none offered the 
sheer variety of filter possibilities as the original Morpheus.

Jon

--- In AN1x-list@y..., "Scott Bradley" <s.m.bradley@d...> wrote:
> Korg Prophecy
> 
> 
> 
> > -----Original Message-----
> > From: e_mannikko [mailto:e_mannikko@y...]
> > Sent: 22 February 2002 00:38
> > To: AN1x-list@y...
> > Subject: [AN1x] Morphing
> >
> >
> > Hi everyone
> >
> > Are there any other synths with sound morhphing abilities.
> >
> > Sure is a nice feature
> >
> > Erkki
> >
> >
> >
> > Community email addresses:
> >   Post message: AN1x-list@y...
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> >
> >
> > Your use of Yahoo! Groups is subject to 
http://docs.yahoo.com/info/terms/

> >
> >
> >

--- In AN1x-list@y..., "e_mannikko" <e_mannikko@y...> wrote:
> Hi everyone
> 
> Are there any other synths with sound morhphing abilities.
> 
> Sure is a nice feature

Yamaha SY22, TG33, SY35, Korg Wavestation