There was this vocal preset in maybe one of those casio calculator/synths - real airy.  I think Stereolab used it in an early album.  It was a very breathy vocal sound with no adjustments.  
 
Does this ring a bell to anyone?  I am looking for something that does that sound.  
 
Thanks

Roland VP-330 Vocoder Plus?
 
I was never able to afford it, nor justify the bedroom space for the limited sound range.
And I hated the "Paraphonic" limitation.
 

No J it was definitely a Casio and I think it was one of those calculator synths (what a concept!!!) or maybe it was one of the plastic samplers they made.
 
It was an airy but somehwhat staccato sample of a femaile "ahhh".  You could play somewhat fast parts with that sample due to the quick envelopes.  

You might want to google/bing casio synth VSTi. There are a couple of Casio synths in VSTis so maybe you can find that sound. 

thanks Mario. Will try.  I searched sample libraries but it is so hard to get a view on how those actually sound.  And by nature you cannot download a sample library on trial.  
 
The sound was ubiquitous.  Heard it on commercials and songs and I am pretty sure one of my Stereolab LPs has it on one tune.  I thought it was Space Age Bachelor Pad Music, but nope.  

Fantasia or similarly named patch on the little white Casio keyboard (the one with the number chasing game, I assume?).

Try that :

http://www.plogue.com/products/chipspeech/
 
 

I had great interest in Casio's synths back then.
But the OP is not referring to the SK and FZ / ZZ samplers.
 
The VL calculators just had beep tones, with the VL1 (and VL10?)
being the exceptions.
 
But the five presets on Casio's VL1 are nasal and in no way "airy".
Fantasia on the VL1 bears no resemblance to the Roland sound of the same name.
 
I have now done some research out of nostalgia prompted by the OP, but
I cannot find any Casio product that matches the OP's description.

...unless I completely misunderstood "vocal" and the OP is thinking of the
Speak 'n' Spell?
But that was Depeche Mode, and the item was by Texas Instruments.
 

pt80 ;-)
 
forget ya korgs / moogs / rolands / yamaha's
 
bomtempi for the win ;-)