Sine wave generation?

[acid1]

Silliest thread of the year

I got to thinking about DSP chips and DSP synths, which the virus obviously is.

I thought about coding with asm a square wave,triangle wave, saw wave.... all seemed relatively straight forward

but what about sine waves?

Does anyone know how the virus or similar synths compute the sine waves?

Does it generate a sine wave with analog gear, and then sample the values of the voltage to create the digital sine wave? or does it use some complex algorithm my feeble mind could never possibly imagine.

I also read about sine wave lookup tables, but those seem like they'd have to be pre defined for every frequency and stored in a rom someplace, but then how could the virus morph between a sine wave and another waveform?

[Tomer=Trance]

the sine i belive is a generate single cycle. i think the basic waveforms are not accualy generated dou to saving of dsp power but already calculated and burned into the rom or at least not fully calculated.

im not sure about this but i do know most VAs are built this way,
maybe you should email access about this.

[ben crosland]

Originally Posted by acid1

how could the virus morph between a sine wave and another waveform?

Strictly speaking, it doesn't - it blends between them.

[Tomer=Trance]

mixing=X+X