wave scriber [was: Modern analogue ...]

[Jeremy Brookes]

> > The optimal solution seems to be a set of waves whereby each exhibits
> > a unique timbral character, yet it is possible to obtain any spectrum
> > by mixing them in various proportions. The latter requirement means,
> > they should constitute a complete basis, possibly an orthogonal one (as
> > in case of Fourier's sine basis).
>
>    I believe that this is very much what the later Yamaha FM synths did.
> Correct me if I'm wrong, but the DX-7 was sine only, right?  But later
> ones like my DX-11 allow for different kinds of waves (saw, tri, etc.)
> but was reduced to 4-Op.  I think there were some 6-Op's available
> (DX-21? or DX-5?).

The later ones had differnt waveshapes, but these were usually signals like
half wave sine, rectified sine, spaced halfwave sine, exponential, etc. They
were all based on very simple math functions, not really saw, square, etc.

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   jezz at bluebear.freeserve.co.uk
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   MIDI, SYNTHS, CIRCUITS, STUFF