So after creating an NSF based on the following FTM file, tune 1 of the NSF has a very high-pitched note at the end of the tune, which doesn't appear in the FTM file.
How come.
FT version is 0.4.2
I bet it has something to do with the fact that you're trying to use Rxy to make pulse1 and Tri go way lower than their lowest note and you stop the song before they even get a chance to slide to the bottom note
Getting rid of all of the RDF's seems to fix it.
Or, if you get rid of the note cuts you can hear that it's not until around row 23 when it finally reaches the bottom note. And testing shows that it's not simply the C00 being there, but the note cuts themselves that cause the bug. I could find no way to remove the bug leaving those redundant Rxy's there AND keeping the note cuts on row 11
I've had a similar issues, most noticable with the VR6 Sawtooth/Rectangles in this one:https://soundcloud.com/zdrytchx/grind-your-ears-famitracker
It's audible in about 0:21 where it sounds like it shifts up two or so octaves.
The weird effect disappears if you remove some of the other channels but I can't remember which one.
The .ftm file can be found on http://famitracker.com/forum/posts.php?id=5443
the file is called "test4.ftm"