The Unofficial Access Virus & Virus TI Forum - since 2002

The Unofficial Access Virus & Virus TI Forum - since 2002 (http://www.infekted.org/virus/forum.php)
-   Sound designing (http://www.infekted.org/virus/forumdisplay.php?f=104)
-   -   osscilator question (http://www.infekted.org/virus/showthread.php?t=24593)

ipaqlinux48 11.08.2004 12:42 PM

osscilator question
 
Page 27 of the Virus C manual: "The oscillators of the VIRUS oscillate freely.". What does this mean? Does this mean that the oscillators doesn't run on 440 Hz , but some oscillate at 440.5 Hz, while another may oscillate at 439.5 Hz?

Juho L 11.08.2004 02:12 PM

I think it means that they are not retriggered unless you want them to.

ipaqlinux48 11.08.2004 04:58 PM

But when osscilator 1 and 2 both produces a saw waveform. Then the resulting sound must be a saw waveform too, if we don't detune the 2nd oscillator of course. The sum of two sinusoids with the same frequency is a sinusoid (tyhat can be proven). Thus: the sum of two saw waveforms with the same frequency, results in a new saw waveform too. But, as I and you notice, two saw osscilators produces a fatter sound than a single saw waveform. So, what is wrong with my theory?

Juho L 11.08.2004 10:02 PM

Quote:

Originally Posted by ipaqlinux48
But, as I and you notice, two saw osscilators produces a fatter sound than a single saw waveform. So, what is wrong with my theory?

That's due the fact that the saw waves don't start (or trigger) exactly on the same time and I think there's also some minor drifting in the frequency to add some "analoginess".

hatembr 12.08.2004 06:56 AM

oscillate freely : like juho said, i think it means their cycles are not retriggered when you play notes... unless ... you set an initial phase position for the oscillators menu, thus making them start at the same phase position each time you hit a note.
Beside that, the oscs seem phatter because the osc2 detune is initially set to 32, set this value to 0 and set the phase start position to whaterver you want and you will get a unique saw wave or whatever, obviously it will sound louder then a single one because it is the result of two stacked identical waveforms.

DIGITAL SCREAMS 12.08.2004 11:48 AM

I think thats right ^^

Hamtembr ur avater makes me laugh man! What the hell is it? Some kinda puggy dog?

lol

DS

hatembr 12.08.2004 12:41 PM

hahaha yeah kind of, actually i had the same problem as this guy here:

http://www.sunesha.nu/virusforum/viewtopic.php?t=2406

... then being in a parallel world and loosing control of all parts of my body ....i slept with my poodle! and the result is that baby chewbacca... :lol:


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