Mike Raiford wrote:

> Real world is never as nice and neat as ideal..

On the contrary...

http://www.xkcd.com/538/

;-)

>> Yeah, it's tricky. There are several possibly ways to map the s-domain 
>> to the z-domain - including advanced techniques where one specific 
>> frequency maps exactly while the rest are all approximate. (E.g., so 
>> you end up with a correct cutoff frequency even if the rolloff angle 
>> is different.)
> 
> Hmmm. That I did not know...

If you just remap all the points on a line into a circle, the distances 
between the poles and zeros changes, which changes the shape of the 
transfer function (and hence frequency response). You can minimise this, 
but not eliminate it.

Or so I discovered when I tried to *do* this stuff! ;-)

>> Yeah, I think I have a picture somewhere on my harddrive of him doing 
>> his "it's time to ****ing FEED ME!" expression. Except that, of 
>> course, you can never tell if he means "feed me" or something else - 
>> just "I'M NOT FRIGGIN HAPPY!"
> 
> He's in the point in a vague direction and grunt. If you don't figure 
> out what he wants immediately, he goes thermonuclear on you. Quite fun. 
> Just the tip of the terrible twos iceberg, I'm afraid.

LOL @ thermonuclear.

I never cease to be amazed by the energy efficiency of small humans. 
They are so small, yet so ably produce deafening levels of sound. It's 
quite astonishing! ;-)

>> I just hope he doesn't grow up to be an idiot. Because, man, that 
>> would be seriously upsetting as a parent, I imagine... o_O
> 
> Me, too. I can only hope our guidance through his early years will lead 
> to him making sound decisions later in life.
> 
> Of course he has the option to ignore all of our guidance advice and 
> upbringing, too. :/

Hmm... I bet that would suck though. Man, being a parent just sounds 
really stressful and unrewarding...

>>> I thought about downloading the demo to play around with.
>>
>> What, Reaktor?
>>
> 
> Yes, They have a time-limited demo (with no saving ability) just to play 
> with. I imagine I won't be able to do terribly much in 30 minutes ... 
> but I can play for a bit.

Yes, IIRC you install the program and it runs in "demo mode" until you 
type in the license code. (So you *are* getting the "full program", only 
with saving disabled and a timelimit imposed.)

It can, of course, load anything created with the registered version of 
the program... ;-)

>> Still, I gather that with analogue electronics, anything much beyond 6 
>> poles is basically hopeless...
> 
> Hmmm, that would be a rather ugly circuit design, I imagine....

The DSP guide claims that they're usually designed with biquads. (A 
biquad being a design that produces two poles and two zeros.) Cascade as 
many biquads as you need for the number of poles you want. But I'm told 
that high-order filters require you to configure the circuits in 
inherantly unstable ways, so they tend to not work properly.

> Ooh, Moog.. neat :) Wish I could find some really good synth tracks.

I've got some chewed up tapes of a chewed up LP featuring Bach's Toccata 
& Fugue in D minor, and also something called "13 variations on a theme 
of Paganini".

>> And then you get into the whole "waveguide synthesis" thing, like 
>> Reaktor's Steampipe instrument. Very neat...
> 
> I remember you posting something created with Steampipe.

If you only play with one thing, play with Steampipe.

Kontact gives you real recordings of a real flute, which do sound more 
"real". But only Streampipe lets you very the breath pressure so that at 
first there's only hissing, then suddenly a note, and the note goes out 
of tune, and finally it jumps up an octave... You can't do that with a 
recording.

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