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FamiTracker > General > Bug Reports & Feature Requests > Weird VRC7 Bug Owner: mmkthecoolest New post
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Weird VRC7 Bug Posted: 2014-09-18 19:57 Reply | Quote
mmkthecoolest

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#61979
If I turn on auto portamento, make a first note that uses clarinet patch, then make a second note that uses the flute patch, a weird noise is made. I am not sure if the bass guitar also behaves in an awkward way when I substitute the flute patch with it (I mean to say if that's how it's supposed to work).

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bug.ftm (1 Kb)
Posted: 2014-09-18 21:21 Reply | Quote
Alexander283

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#61981
Huh - that really is weird. Maybe it's because 3FF avoids the retriggering of the channel (as described [url=http://famitracker.com/wiki/index.php?title=NSF_Importer#VRC7]here) and so, the parameters get messed up ... ?

Posted: 2014-09-18 22:47 Reply | Quote
Xyz_39808

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#61989
I don't know if this has an official name, but I've taken to calling this technique patch sliding. It isn't necessary to key-off before changing patches and in doing so, you can get other timbres outside the 15 presets without burning up your custom slot.


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prostrats.ftm (24 Kb)
Posted: 2014-09-19 22:00 Reply | Quote
mmkthecoolest

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#62015
I have tested the NSF export of the file on NSFPlay, VirtuaNES, and Nestopia and got the same overall results as played on FamiTracker. Now, I just need to know whether this happens on the real hardware as well.

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Posted: 2014-09-19 23:29 Reply | Quote
jrlepage
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#62021
It does.

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Posted: 2014-09-19 23:46 Reply | Quote
poodlecock

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#62025
Once I perfect this technique, then I can say that I mastered VRC7 =)

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Posted: 2014-09-20 00:27  (Last Edited: 2014-09-20 00:27) Reply | Quote
mmkthecoolest

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#62029
[quote=jrlepage]It does.[/quote]Does this mean that this could possibly be an Easter Egg for the chip? Maybe.

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Posted: 2014-09-20 00:40 Reply | Quote
poodlecock

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#62030
Probably not, more like a correctly-emulated glitch

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Posted: 2014-09-20 01:16 Reply | Quote
Xyz_39808

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#62031
I don't understand how it's a glitch?
Choose patch, key-on, change patch, optional key-off. Expected behavior is that the timbre will change mid-note

Posted: 2014-09-20 19:13 Reply | Quote
za909

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#62047
Then this can be used to create "unofficial" patches, which really could make a lot of new possibilities arise for the VRC7.

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Posted: 2014-09-20 19:16 Reply | Quote
MovieMovies1

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#62048
Volume, arpeggio, pitch, and patch sequences for VRC7 instruments: Make It Happen.

Posted: 2014-09-20 20:38  (Last Edited: 2014-09-20 20:38) Reply | Quote
mmkthecoolest

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#62050
[quote=MovieMovies1]Volume, arpeggio, pitch, and patch sequences for VRC7 instruments: Make It Happen.[/quote]WHERE'S 0.4.3'S SXX FUNCTION FOR THE VRC7?!

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