Ultrabeat LFOs will not sync correctly

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Ultrabeat LFOs will not sync correctly

Postby ruari » Thu Jan 19, 2012 8:54 am

I've had an issue with Ultrabeat LFOs for a while & I've tried my hardest to just work around it by other methods but today it's got the better of me & it would be fair to say that I'm a bit wound up by it.

No matter what I try I can not get the LFOs to sync with the rhythmic value displayed, try it yourself I bet you can't get it to work.

Here's an easy to follow set up guide which illustrates the problem:

Start by opening a new instance of Ultrabeat - the default kit is fine for this exercise, select Closed Hat from the instrument list on the left, select pattern C0 in the pattern list (so you have an empty pattern to work from) then click the full view button to open the matrix.

Fill the Closed Hat line in the matrix with 16th notes, your Ultrabeat should now look like this

Screen shot 2012-01-19 at 16.06.10.png


Click the Full View button to close the matrix & make sure you still have Closed Hat selected in the left hand list, in the top right of the synthesizer panel you have the LFO controls - it doesn't matter if you choose LFO1 or 2 for this as neither of them work properly. I'm going to use LFO 1 as in the default kit that is already assigned to the parameter we are going to be modulating.

Make sure the LFO is turned on, the Ramp knob is at 0 & the Cycles knob is at infinity, click the sawtooth waveform or move the slider to sawtooth (whichever you prefer) then set the LFO to sync & set the rate at 1/1. Your LFO section should look like this

Screen shot 2012-01-19 at 16.19.45.png


From here, move down the GUI & click the pan mod button to light it up red & make sure the correct LFO is selected as the mod source - if you are using the default kit it should already be set to LFO1. Move the mod amount slider all the way to the top & that section of Ultrabeat should now look like this

Screen shot 2012-01-19 at 16.24.58.png


You can probably picture in your mind what should happen once we start running the step sequencer, so go ahead & run it - let it run through a few cycles. Your closed hat will now be panning right to left but not at the rate of 1 cycle per bar - no matter what tempo you set your project to you can not sync it according to the rhythmic value displayed.

It makes no difference if you run the step sequencer alone, if you run it alongside your project or turn the step sequencer off & drag the pattern into the arrange window - it will not sync up.

Different LFO shapes are exactly the same, a square wave should spend 2 beats on one side then 2 beats on the other - there's not a chance of that happening.

Please if you have time try it out & either confirm or deny that it is the same for you, if it is pilot error on my part I'd love to know where I am going wrong but I just can't see where I am making a mistake. I can load up identical hats in Battery & EXS24 & get them to sweep across the channels in an orderly fashion - I just can't do it in Ultrabeat :(
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Re: Ultrabeat LFOs will not sync correctly

Postby David » Sun Jan 22, 2012 8:23 pm

I finally gave this a try and I'm afraid you're right, the LFO goes out of sync right away. Time to report this to Apple! Thanks for the detailed bug report.
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Re: Ultrabeat LFOs will not sync correctly

Postby ruari » Mon Jan 23, 2012 4:50 am

Thanks for testing that David, I've now sent Apple a bug report.
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Re: Ultrabeat LFOs will not sync correctly

Postby ruari » Tue May 15, 2012 7:30 am

I've just tried this out with 9.1.7 sadly it hasn't been fixed yet :(
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Re: Ultrabeat LFOs will not sync correctly

Postby camillo jr » Tue May 15, 2012 8:58 am

Confirmed. Sounds like it drops a beat with every repetition - sort of. I also tried it with eighth notes using a square wav modulator and noticed that on the repeat in the place where it should shift over to the other side that I could hear both sides at once, just on that beat. Then it would advance back a beat after 2 reps of the pattern.
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Re: Ultrabeat LFOs will not sync correctly

Postby ruari » Tue May 15, 2012 12:59 pm

Hey Camillo, thanks for testing that, it's a frustrating little bugger isn't it.

Come on Apple, sort it out…please.
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