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FamiTracker > General > FamiTracker Talk > Designing FDS channel waves Owner: Dave New post
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Designing FDS channel waves Posted: 2010-08-01 01:42 Reply | Quote
Dave
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#8240
i'll try and keep this short.

how do you guys go about designing waves? historically i've been pretty lazy about this, either scrawling random stuff on the panel (often creating sharp buzzing tones which are sometimes desirable but have limited use) or just using ones ripped from disk system soundtracks. there's a few tricks i've employed such as shortening+duplicating waves to reach higher registers, "morphing" by taking two different waves and copying the numbers into a spreadsheet and doing some averaging to create "inbetween" waves, also making random symmetrical waves by deleting half the numbers then repeating the first half in reverse. but i've never really 'designed' a specific sound.

right now i'm eager to create a specific drawbar organ sound, but i've been struggling. it sounds like it should be simple enough but i really don't know what to do. i have no premade instruments to use that are suitable nor the capacity to create such a sound by freehand in the editor (not only is freehand drawing really bad for creating a lot of tones - but i also have no idea what i would draw anyway.) what would you do? are there other tools available to ease the process? some sort of FDS wave synthesizer that shits numbers maybe? :b i'm thinking famitracker could use a 64 byte sound import option for the wavetable... then it might just be possible to create/sample a sound externally, save one cycle/loop of it and import it. but anyway, this isn't a request thread. would be interested in hearing thoughts on this, and how you'd approach the situation.

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Posted: 2010-08-01 04:42  (Last Edited: 2010-08-01 05:06) Reply | Quote
Rushjet1
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#8243
1) find wave file of drawbar organ playing single note

2) find looped sound in wave editor (i used goldwave) and trim / crop to just be that waveform

3) downloaded [url=http://www.vaultmate.com/download/alphablender-installer.exe]Windows Alpha Blender

4) changed wave editor to be same size as FDS instrument window

5) used alpha blender to make FT instrument window semitransparent and stuck the wave behind it

6) approximated the waveform by placing dots near where the real waveform is

edit: added visual aid



Attachments:
drawbar.fti (0 Kb)
fancy.jpg (121 Kb)
Posted: 2010-08-01 11:58  (Last Edited: 2010-08-01 11:59) Reply | Quote
Dave
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#8245
thanks. glad to know you have success with that method. i tried the first two steps before, though i'm not sure why my wave ended up so wrong (i've attached it.) i guess alpha blender does help a lot, though it is still quite a rough and ready approach; the drawbar sound is still quite buzzy in the lower registers, which i managed to reduce a little by playing with it. i'll be able to use this sound though, for sure! i'll have to try that method since i don't know any better way right now.

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Attachments:
drawbar.fti (0 Kb)
Posted: 2010-08-01 14:29 Reply | Quote
Rushjet1
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#8247
edited mine to sound like a mix of the two.. still keeping the high pitch sound while making it less buzzy


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Posted: 2010-08-01 20:46 Reply | Quote
Dave
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#8255
actually, i don't like that as much. i was just comparing your first version to your second version, and the first has more upper harmonics (a more typical drawbar sound - which is what i was going for.) perhaps the waveform does need to be a little bit spikier for a good drawbar sound.

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Posted: 2010-08-03 03:52 Reply | Quote
ElHuesudoII

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#8313
Ah, the FDS waves. I'm often lazy when experimenting with these, resorting only to fake a double channel or borrowing waveforms from NSFs...


...however, I'm heavily tempted to try GoldWave out. I have a giant folder with samples from XMs or ripped from audio sources here and there, and I'd love to give 'em a spin on the FDS channel.

Posted: 2010-08-07 19:20 Reply | Quote
Doommaster1994

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#8451
I wonder how those Japanese composers thought up those waves. Especially the M wave.

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