how waveforms are created?

[Tomer=Trance]

so how exacly are clasic analog shapes are created -
saw,square,triangle
i know the basic and most pure waveform is the sine wave and with endless harmony layers you can creat infinite shapes of waveforms but i cant seem to understand how exacly thos are created inside the analog synth.
somekind of additive manipulation is going on in this transistors? hmm made a big mess here :\
can someone please explain?

thanx

[Ash]

Transistors arent analogue.. think valves.. hehe

[Juho L]

Originally Posted by Ash

Transistors arent analogue.. think valves.. hehe

?hih. Of course transistors are analog! Transistor is just a current amplifier.

There are many methods to achieve analog oscillator. Don't try to mix Fourier series (i.e. sine components) with analog systems. You don't have to ponder Fourier series when working analog because analog isn't pure math like digital systems. There's actually no point in starting to explain the principles of analog oscillators if you don't have no experience on electronics. Just to say it simple most analog oscillators are based on triggering.

Edit: If you're really interested it's very easy to find schematics of oscillators from internet. But as I said you'll have to know at least something about electronics.

[Tomer=Trance]

ok so forget oscilators
talk to me about waveforms
how are they created?

[Juho L]

Originally Posted by Tomer=Trance

ok so forget oscilators
talk to me about waveforms
how are they created?

Waveforms on digital or on analog system?

[saba]

Voltage goes up, voltage goes down, voltage goes up, voltage goes down.

The pattern will define the timbre of sound, the speed will define the pitch.
________
MICHIGAN DISPENSARIES

[Ash]

I thought a transistor was just a switch Apply current to one pin, and it allows current flow through the other two pins.

I know nothing about electronics.. ignore me.. haha

[Juho L]

Originally Posted by Ash

I thought a transistor was just a switch :) Apply current to one pin, and it allows current flow through the other two pins.

It can be used as a switch (as it is in digital systems), but basicly its a component that allows control of high currents with very small control current.

[flexoffset]

I just went to Google and typed in --- without quotes around it ---

charge capacitor analog wave

One thing that differentiates analog from the digital is that capacitors take time to charge and discharge current to produce a desired waveform whereas a digital signal can produce a perfect waveform. Analog methods always have a bit of a bump or a curve while the circuitry charges and discharges.

Here's some of the better examples I found during the search.
The bottom link is really cool. Be sure to check out the triangle and sine wave circuitry, too.

http://www.allaboutcircuits.com/ --- all about circuits, electronics, etc.

http://users.telenet.be/educypedia/e...javaanalog.htm -- interactive

http://www.greenandwhite.net/~chbut/rc_cir.htm -- good example

http://www.play-hookey.com/analog/sq...generator.html --- shows circuitry required to make a square wave.