yeah thats offset.
here is an excerpt from james howto
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In LaserBoy, from the main menu, option 'b' takes you to wave utilities. First choose option '4' to set up your desired sample shifts.
If you have a PCAOM, you can take a guess that at 48000 samples per second, your scanners are about 7 samples behind your color modulation, so you can push your scanner signals ahead in time by 7 samples! For sample offsets on X & Y input the digit 7. You do not need to enter zeros for the rest of the list of offsets. You can just [Esc] out of this settings menu. Hit '4' again any time you want to see what your offset settings are and [Esc] to return to the wave utilities menu. If you have a direct modulated diode laser, you might want to try a sample shift of 5.
If you have a set of lasers that have different modulation reaction times, you can also compensate for differences between the colors!
Start out with an offset for X & Y of zero. The input negative numbers to indicate how many samples you want to delay each one of the color channels.
Once you get your desired sample shift list set up the way you want it, you have to apply it to the wave you made earlier. You do this with option '5' apply wave offsets. If you want to return a wave to a state of no offsets between the channels, then set your desired offsets list to all zeros. Since the offsets are stored in the header of the wave, LaserBoy know how to read it in whatever state it is in and rewrite it to any other state you want.
Once you figure out your offset settings and apply them to the wave, it should be ready to play!
James.
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