Healing-D-Vision question

I was watching videos of Healing-D-Vision and comparing the differences from SN and X, and I noticed that the syncopated sets of five jumps right before the speedup didn't seem to match up at all between the two charts.

I'll refer to note timings like this:
1.00 is the first 4th note of the first measure
2.00 is the second 4th note of the first measure measure
1.50 is the 8th note between the first and second 4th notes
4.99 would be the instant before the second measure starts
5.00 is the first 4th note of the second measure
etc.

The jumps in SN are timed like this:
1.00, 1.75, 2.50, 3.25, 4.00, 5.00, 5.75...

The jumps in X are timed like this:
1.00, 1.67, 2.33, 3.00, 3.67, 5.00, 5.67...

Notice that the last jump in each set of five (in bold) are a full 1/3 of a beat apart (a 12th note), or what should be a very noticeable difference of 0.11 seconds. (enough for a Marvelous in one version to count as a Good in another)

Yet when watching the videos, both charts seem perfectly matched to the background beat.

How does this work?

Just a guess, but the BPM changes MAY be either a short bit earlier, or later in X than they were in SN.

---

Because of how DDR's timing system worked, the notes in HDV were off because it did not allow for triplet feel timing.

IE splitting a beat into timing that is effectively 1.33 notes recurring, or something along those lines.

As a result, some of the notes ended up being off time. I believe a video of Iamchris4lyfe playing it loudly on his CF illustrates how the rhythms are supposed to be stepped pre X.

Not 100% if that's what you're getting at, but yeah

---

They willingly wrote the chart in SuperNOVA using 16ths only. They re-synced it on X using triplets. That's all.
The reason the jump sets both make sense using 16ths and triplets is because while the beat is in triplets, the percussion at that part is actually using syncopated 16ths-8ths-4ths. But the rest of the chart makes no sense with 16ths so overall, it's good they fixed it in X.

---

Ok, after watching an SN video and an X video multiple times side by side, I think I might have figured it out:

The last few jumps in each set are all slightly late in SN, and all slightly early in X. In both versions, the music itself and the BPM are identical.
Like I said earlier, the last jump in each set has a difference of 1/3 of a beat between the two versions. If the background music is set so that SN falls 1/6 of a beat late and X falls 1/6 of a beat early, the difference is hardly noticeable, especially since the first few jumps actually fall on beat and help to mask the difference.

To make every jump fall exactly on beat, they would have to use 4th, 96th, 48th, 32nd, and 24th notes, like this:
1, 1+17/24, 2+5/12, 3+1/8, 3+5/6, 5, 5+17/24.

Obviously that would be way too cumbersome.

Did they do that on purpose to save time or did they goof? DDR has had triplet support since 6thMIX.

They had buggy triplet in the past, where all triplets will go "slightly earlier".
They fixed it on X. So they fixed a lot of charts.
Major fix on Healing-D-Vision, 三毛猫ロック & bag.
Minor fix for both DROP OUTs, TSUGARU, MAX 300, etc...

---

Perfect triplet support didn't exist until DDR X. It had always been rounded to the nearest 32nd note. (Except HDV which was purposely rounded to the nearest 16th instead, perhaps to add difficulty.)

12th notes rounded to the nearest 32nd are only off by 1/24 of a beat (a 96th note). At a speed as slow as 100 BPM, the difference is only 1/40 second, small enough to fit inside the Marvelous timing window.
However, in Bag, since the beats are slower (only 65 BPM), the difference becomes about 1/25 second, which is large enough to throw off Perfect Attacks significantly.
In fact, Bag's broken timing is quite similar to HDV, with its weird staggered gallop feel.

Correction, it started to support it since SuperNOVA2.

Longer than that. 4th mix supported them for sure, the same way they were supported up to SN2 anyway. Drop out comes to mind right away, and typical tropical on extra mix, a 4th mix engine game. No idea if the solo games support triplets, and the gameboy games didn't as the triplets in typical tropical were removed.

---

I don't believe they do.

---

What about AFRONOVA?

Also, GET UP 'N MOVE, though I don't think it's correct...

however as Al said, the correction of triplets started in SN2. One that comes in mind is I'll Make Love To You.

I dunno what the step artist was thinking when they did HDV's chart. For me the difference is like

jump - jump - jump - jump - jump
and
jump jump jump jump jump

it's correct already with 12th. I made edit with that and it fits perfectly.

@ddr_ray

nooo they didn't fix Mikeneko Rock. it was worse.

---

In DDR X , HDV was 90% perfect except on 360 section that still has 8th notes. and deadly crossover.

HDV itself is a gallop song with 12th notes inside.

So does for Matsuri actually. But Konami never fixed it.

---

Didn't Swing It (from 5thMix) use 16ths and 8ths too? If I remember correctly it was like that. However, the song itself was in triplets.

---

Well, at least the J-SUMMER MIX was correct, no?

They could've fixed it, but it sounded okay already, not to mention that the whole series was removed in X.

Also, the 360BPM section is okay, it IS meant to have 8th notes. Don't you realize after the first bursts there's a couple of 12th gallops there? If you change it to 12th it'll be weird (except for EXPERT chart before the last run. it's fixed, however)


Now that you mention it, you're right. Luckily it still made sense. There's a part that uses triplet too however.

http://zenius-i-vanisher.com/v5.2/simfiles_getstepchart.php?simfileid=645&difficulty=expert&style=dance-single

---

I agree with Silverhawke, I'll Make Love To You is fixed in SN2 (the gallops were changed into a normal 1/4 beat)

---

You mean was quantized properly to 12ths and 24ths.

Was BALLAD FOR YOU fixed to in SN2? (well I suppose so)

---

To me, it was better, lol.

Yes.
But for bag, it's still incorrect, until X.

---