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FamiTracker
In the last days I have been working on a cover of some MMBN songs, and encountered a bug in the sawtooth when using tremolo effect(7xy) and a volume macros. The volume goes crazy when its value reaches zero(or something like it). It looks like a distorted saw wave in the oscilloscope, and sounds like it, but I didn't set the duty phase to 1. Attached is a ftm which shows what I mean.
Also, it behaves a bit different with some volume values, even with zero. I set up some.
The glitch is caused by the volume wrapping from 0 back to 62.
A technical explanation on why this causes the wave to be distorted can be found [url=http://famitracker.com/wiki/index.php?title=Vxx#Sawtooth_usage_notes]here (the cause is different but the result is the same).
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No, it's not supposed to happen, I was just providing the explanation on why it distorts the wave as if you had used V01 - the tremolo doesn't cap at 0, apparently. But it's definitely a glitch.
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I record (some) NSFs on hardware. Feel free to [url=http://www.famitracker.com/forum/posts.php?id=3633]request a hardware render.
Yeah, it's a bad glitch, since it can really screw up some things(as it almost did with me). I hope jsr can do something about it. Thanks for your help(or advice, if that's the case).
Well I don't really have any advice to offer, other than.. Don't use 7xy on VRC6 sawtooth? Or at least avoid making the tremolo wide enough that it wraps to 62. At least until a fix is applied and a new build is released.
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Follow me on [url=https://twitter.com/jrlepage2a03]Twitter.
I record (some) NSFs on hardware. Feel free to [url=http://www.famitracker.com/forum/posts.php?id=3633]request a hardware render.
OK. But as you might have seen in the ftm, the widest value you can use without it wrapping is 1(7x1, I think).
The effect I used when I experienced this problem was a 755, and what I applied to avoid it to wrap was a note cut, but it was not intended to be used. For now it's fine. I'll try not to use it again(unless I need it). Thanks.
