Sub Bass Sinewave Phasing Issue
 

Hi Guys,

I want to create a clean deep sub which usually can be obtained by using the init preset, choose one single sinewave in a low octave. However when I hold the note down the sounds rises and falls and rises again. I first checked the LFO's, but that was not active. Then I double checked to see if I was really using one oscilator. this was the case. What is possible the problem???
I just sold my virus C, and I'l almost regretting this. I got mean subs by using the same method.

Im using the virus USB outs and have a EMU1820M soundcard.
The sound aind really sound deep n low either.

You've made sure you've turned Osc Bal completely anti-clockwise?

The INIT patch has both oscillators (1 and 2) active by default, and oscillator 2 is also slightly detuned by default, which gives phasing.

Just turn Osc Bal counter clockwise so you can hear only Osc 1.

Don't worry, it's only a setting that is different!

You may also be confusing the former patch called "START", with "Init". The START patch is everything zero'd. Whereas the Init patch is the same but with Osc 1 & 2 active, and with fine-detune.

I'm afraid that i already have the osc 1-2 balance all the way to the lef, but i will try this on a clean project 2nite..

How do you load the start patch?

It's probably different to mine, then. On my Indigo there's a patch called START next to the Init patch.

So, you've selected the Init patch, turned Osc Ball to Osc1, made sure Osc1 is in "classic" oscillator mode (as opposed to hypersaw, etc.), changed the Osc1 waveform to Sine, and transposed the patch down a few octaves... Is that all you did?

There's no unison, or Osc3, or similar? I know you've checked LFOs.

Have you maxxed the amp sustain and selected zero sustain rise/fall time to rule out the amp envelope?

If you could post your Init patch up here, someone will be able to take a closer look at it for you. (Not sure if my Indigo will be able to load it, but I can try).

well im very confused m8. cant find any source that should be causing the fase problems. Its not just with the sinewave, it's also with pilse and saw, but i never noticed since i always program with unison and hypersaw.
the rise and fall of the volume do vary depending on what note i hit, dont know if that should give a hint. 2 morrow i wil use the TI as a soundcard, see if that makes a diffrence, and i will also use the analog outs.
untill than i'll have a sleepless nite...

obviously check for phaser off and chorus off

Already checked that.

Jim, any chance you could post up the patch so we can perhaps have a gander?

Just an idea, but maybe you're hearing the Virus via USB outputs and analog outputs at the same time? This will most likely result in phasing.

I found out this nex thing. on the virus device (not anywhere to be seen in the TI control) there is a Mono Button button next to the sync button.
only in mono mode i seem to be getting a single wave because the phasing problem dissapears. but in mono mode obviously i cant hit a chord.
Wont u guys check it out if u xperience this same phasing issue in the standard init mode? cant imagine that this is the way acces desinged it.

Maybe every note you play is being sent to the Virus twice? I don't know how, but this would explain the phasing and the fact that it disappears in mono mode.

I suggest double-checking your MIDI connections/settings.

If you hit a chord you're going to get phasing on any synth. Every note has a different frequency.
mono mode helps with things like kik drums anyway because your release of the previous note could be phasing with the start of a new note.

yes of course but I'm referring to the original phasing issue.

i have had the same problem

havent fixed sound a good solution yet .. but try and change the filter settings, from seriel to parallel or one of the others
(i'm not a home right now, so i cannot check the names ;)

It seemed to help for me... when i get home later i can check :)

please let me know. sounds hopefull.
I had official answer from Acces, but they were not really helpfull for now:
Dear Jim,
Are you using the Virus TI Control in Cubase and have you tried this with different PARTs in the Virus TI Control Center? I can't really recreate this here at all. Moving the OSC BALANCE slider to the very left or right really gives me what I expect: just one oscillator.

Hello guys,
I found out what was wrong. it was not the TI.
My midi keyboard was hooked up to my pc by usb AND by midi cables as well. pretty stupid. so each note i hit came in twice with nanoseconds delay in between which caused
the phasing. Dont ax me why i got them both hooked up cuz i don't know!
special tnx 2 BOREG!

Really enjoyed this thread! (^_^) Just goes to show how sometimes the solution can be staring you in the face yet remains invisible!

While we are at it, one more question.
When you raise the resonance on a filter the overall volume drastsicly
decreases. Is there a way to override this decreasing while still raising the resonance?

put the resonance on a soft knob with patch volume using the matrix and tweek it to your liking.