|
Calculating the rate of lfo to match tempo
|
View this Thread in Original format
| G-Con |
Hi there.
I've got a virus ti and as much as i love it, it does have a few niggles.
One of which is that you can't automate the LFO rate when it is clocked to the bpm.
Does anybody know if there is a way of calculating what value to set the rate to so that it is in sync with the tempo.
Eg. My track is 130bpm. I want the LFO to cycle every 1/4bar. Is there a formula to work it out? |
|
|
| DJChrisB |
| quote: | Originally posted by G-Con
Hi there.
I've got a virus ti and as much as i love it, it does have a few niggles.
One of which is that you can't automate the LFO rate when it is clocked to the bpm.
Does anybody know if there is a way of calculating what value to set the rate to so that it is in sync with the tempo.
Eg. My track is 130bpm. I want the LFO to cycle every 1/4bar. Is there a formula to work it out? |
I don't have a Virus TI (...yet), but I assume the parameter you can set is in milliseconds. If so, here's a good little widget to convert BPM's to milliseconds for different note lengths: http://www.macmusic.org/news/view.php/lang/en/id/3645/
The drawback to this widget is that it only goes up to quarter notes, but you can simply multiply that value out to get it to a bar, etc. |
|
|
| Sanguis Mortuum |
| quote: | | Originally posted by G-Con Eg. My track is 130bpm. I want the LFO to cycle every 1/4bar. Is there a formula to work it out? |
Well duh.:haha:
1/4bar = 1 beat (in 4/4)
60/130 = 1 beat every 0.461538462 seconds. |
|
|
| G-Con |
| quote: | Originally posted by Sanguis Mortuum
Well duh.:haha:
1/4bar = 1 beat (in 4/4)
60/130 = 1 beat every 0.461538462 seconds. |
so whats that in milliseconds |
|
|
| Storyteller |
x1000
461 or 462 if you want it integer or rounded :P |
|
|
| G-Con |
unfortunately the virus rate control isn't in milliseconds, its valued just from 0 to 127.
any ideas? |
|
|
| Sanguis Mortuum |
| quote: | Originally posted by G-Con
so whats that in milliseconds |
Are you really that stupid?
| quote: | unfortunately the virus rate control isn't in milliseconds, its valued just from 0 to 127.
any ideas? |
Im not certain because I dont own a Virus, but from lookin at the PDF of the manual it sounds like you should be able to set the master clock of the Virus to a specific BPM then sync the LFO to it, not sure whether it can sync to MIDI clock too or not... |
|
|
| Zombie0729 |
| gcon i haven't needed to automate an lfo in clock mode yet but have you tried using an outside controller for it? cc value is listed in remote mode |
|
|
| DJChrisB |
| quote: | Originally posted by G-Con
unfortunately the virus rate control isn't in milliseconds, its valued just from 0 to 127.
any ideas? |
0 to 127 is a midi data range. again, haven't used the Virus, but you may be in the wrong mode if you are seeing that range.
Anyway, for automation, it may be easier to do it via software. (Just a thought.) |
|
|
| G-Con |
The virus's lfo's can be synced to the master tempo but can no longer be automated in this mode.
All the virus's values for every control is 0-127. I'm not in the wrong mode, this is how the virus is setup.
Cant do it in software because it wont allow the rate to be assigned for automation when clocked.
- I'm not sure what you mean. How will using an outside controller help? |
|
|
| Zombie0729 |
| quote: | Originally posted by G-Con
- I'm not sure what you mean. How will using an outside controller help? |
Click on midi ctrl, and lets say your lfo is midi cc 85, just click on cc85 in the next box down, then draw in your envelope.
If you are trying to automate the lfo in the plugin this may be a problem, if that is the case then i would suggest creating another empty midi track and going midi out from your soundcard directly to midi in of your virus, with midi cables. This is the oldschool method that will bypass the plugin and should work.
sorry G-Con i'm not at home so i can't give you a step by step. i remember noticing the lfo couldn't be automated in clock mode so i'm doing a work around in my head. when i get home tonight i'll test this but you should be able to midi-cc it from an outside source. |
|
|
|
|
