[sdiy] Some theoretical discussion...

[Studio 271 Productions]

At first I thought this could be considered OT, and it probably still 
will be by some, but I hope it inspires people to think about such a 
thing or at the very least tell me about something like this that may 
already exist.

I was waiting for the bus today when a thought struck my 
content-stricken mind. We have delay effect for sound, but why not a 
reverse delay effect; a way of hearing a sound before it actually 
occurs? That's when I decided to google up some information, and 
found a document on natural piano playing envelopes that described 
something called "yaled" ("delay" backwards), so I decided to call 
this theoretical effect this as a way of assigning it a name while I 
thoght about it.

Delay, in terms of writing styles, would be a nonfiction book about 
the past; yaled, OTOH, could either be a nonfiction futuristic book 
which derives it's information from premonitions into the future, 
such as Nostradamus' writings (this does not necessarily mean it has 
to come true, though, because it is still just a premonition. Unless 
someone here believes in predestination...) The other would be a 
fiction futuristic book (sci-fi?) which derives it's information from 
past events, such as George Orwell's "1984". This first option would 
most likely be impossible with our current technology and views about 
physics (although I remember seeing a physics program which showed a 
guy who sent analog audio through a wire and through a empty space or 
something and somehow the music got through the space before the 
wire. At least that's what I think happened; it was a few years ago 
after all. Maybe it was just a misunderstood metaphor? ;/ ), but the 
second option, the fiction futuristic based on past events seems 
plausible.

It would be a lot like a delay to a listener, maybe even almost 
identical, but it WOULD be very interesting to hear a frequency begin 
to slow down before you have it actually happen. In our state of 
technology it would basically be a type of "randomizer" which 
attempted to guess a change in the voltage level before one actually 
occurs.

It took me a while to come up with a way that one could do this, but 
I came up with a logic structure to base it on:

x = streamed instantanious sound
a = x
wait a designated amount of time
b = x
if a = b,  then c = b
if a > b, then c = b(minus an arbitrary unit)
if a < b, then c = b(plus an arbitrary unit)
output c

That seems to represent what I am talking about. However, I would 
like some feedback so people can "debug my logic". An analog 
equivelent would probably involve a BB... er... sorry... tape delay 
and some comparators.

I hope I didn't leave anything out that I thought of earlier, because 
I tend to do that. I have written this purely at a theoretical 
viewpoint to inspire further thinking about "yaled". Just remember 
that I am NOT talking about traveling into the future, taking a 
voltage level and outputing it in the present. If that were possible, 
I would suspect it to sound very interesting, OTOH.

- Drew