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Motion Sequencer note on question

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Posts: 23
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I have created a motion sequence lane that slowly sweeps the cutoff of filter and that works well. I find that when I hit a note, the filter does not start at a cutoff at 0 so there is a short audible blip prior to the motion sequence taking over. The trig is 1st note. It is doing what I intended with the exception of the filter not using the MS start vale of 0 initially. Is there something else I can do to insure the element begins its filter cutoff at MS start and not the element setting? 

 
Posted : 20/11/2024 5:44 pm
 Toby
Posts: 475
Honorable Member
 

Set actual filter cutoff to ZERO - ms is just an offset so it will offset from whatever the programmed cutoff value is.

 
Posted : 21/11/2024 6:35 pm
 Toby
Posts: 475
Honorable Member
 

Motion Seq just applies an OFFSET value to whatever the actual cutoff value is.

I find that when I hit a note, the filter does not start at a cutoff at 0 so there is a short audible blip prior to the motion sequence taking over.

The actual cutoff value at any given point in time depends on three things:

1. the programmed setting for cutoff

2. the control assignment settings for: curve type, polarity, ratio, param 1 and param 2 (depending on curve type)

3. the OFFSET determined by the current position of the motion sequence

So if cutoff is 160 and you use default control assign values the leftmost curve position is a 0 OFFSET and a default motion sequence has the leftmost step 1 value of 0 the result is a 160 cutoff value because both offsets were 0.

Do this simple example using element level to understand what is happening

1. Init Normal (AWM2)

2. Press and hold middle C - remember what you hear and how loud it is

3. Enable the default motion sequence for lane #1 with Part and Master Motion Seq switches ON

4. On the Control assign screen select Element Level as the destination and MS Lane 1 as the Source

5. Press and hold middle C - it should sound the same as in step #2 with no audible effect from the motion sequence

That is because element #1, by default, has a level of 127. If you don't apply any offsets it will always have a level of 127

6. Change the polarity to 'Bi' - notice how the left side of the curve is now BELOW 0 - halfway down to a value of -64

7. Press and hold middle C - you now hear sound right away but it warbles due to the motion sequence step values changing

8. Increase the ratio from 64 to 127 - notice how the left side of the curve is now a -127

9. Press and hold middle C - you hear no sound right away but then it follows the same step pattern as the motion sequence.

Why the change in step #9? The element level is still 127 but the left side of the curve is -127 so the result is 0. And since the left side of step #1 of the motion sequence is also 0 the sound starts at 0.

10. Now go play around and change the motion sequence step values and listen to the effect the have on the sound. If step #1 starts at MAX instead of MIN if will apply a MAX offset.

The above applies to any parameter that uses offsets. For them the controllers don't change the actual value - they just apply an OFFSET to whatever the value is.

 
Posted : 21/11/2024 7:33 pm
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