Before you read this guide, please note:

If you audio does not start before 0.9 seconds, this guide is not required at all.

Foreword

Admittedly, PCTyx and Cytunity supports offset so the scanner rebounds at the same time as the beat starts, but it's best to set those offset to 0. Why? Because we want maximum compatibility when we convert the chart from C1 Format to C2 Format. (This is not required when using Mekko's .csv to c2 converter.)

If your song starts before 0.9 seconds, this can cause problems on the charting programs you use (In fact, you can't chart before the 0.9 second mark on PCTyx) and Cytoid itself (as it spends ~0.9 seconds fixing the scanline itself).

So, in conclusion, what the objective for this audio preparation is to add 0.9 seconds and make sure the offset used is 0.

Requirements

• Audacity

• Music you want to chart

The Guide

Start by importing your music to Audacity. You can easily do so by drag and drop your music to the Audacity. For this guide, I'm using the music Marry Me, Nightmare by t+pazolite.

As you can see the music starts at 0.250 second. That's below 0.9 second. We need to put fix that.

Press Home to make audacity scanner bar move to left most. Then Generate → Silence. Set Duration to 0.900

Then you have something like this :

kCliccClkClickClicClicick anywhere to deselect. Now click Analyze → Regular Beat IntervalsanywhereIntervalsanywhere

Set time to place first label to 0

Then do this set of things:

1. Label Text is optional, I usually empties the box so I can read it easily.

2. Minimum Digit Number is set to 1 or 2, again for easy reading.

3. Set begin numbering from 0.

4. Adjust label interval to fit length must be set to No.

Click OK. My result is like this:

As you can see, in Marry Me Nightmare it starts in the middle between Label 2 and Label 3. To zero the offset in PCTyx, you must make the music beat starts on the label.

There’s 2 approach, it’s either edit the music to start at Label 2 or start at 3.

So either delete some silence (approach 1), or generate more silence (approach 2). This is dependent on your existing chart.

To do approach 1, simply from starting music, left click and drag until it selects to label 2, then simply press delete.

To do second approach, zoom in to label 0 and label 1, drag from the start of music, to label 1. And make sure to set Selection to Length rather than End.

It will show the duration needed to generate silence. Mine happens to be 0.301. Note it.

Deselect your selection, Press Home, go to Generate → Silence, and enter the value shown earlier.

Now the music starts at Label 3. And you can test play this with scanline shift 0. If the scanline rebounds inline with the beat, you've done right.