Author Topic: Making Sega/adlib type sounds?  (Read 1342 times)

Jverchot

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Making Sega/adlib type sounds?
« on: July 28, 2021, 03:06:26 AM »
Has anyone had any success in emulating or sounding very similar to the second mega drive or an ad-lib sound blaster with their preenfm2?

Xavier

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Re: Making Sega/adlib type sounds?
« Reply #1 on: July 29, 2021, 06:00:33 AM »
Hi,

To do that, you have to know what are the FM spec of the ad-lib engine.

The chip used is the YMF262.
I just had a look at the spec (pdf can be found), looks like it's a 4 operator FM synth.
So use 4 operator algo.

I read quickly so I maybe wrong, but it seems it only has one Amplitude enveloppe.
So your carrier operator(s) must have the same enveloppe (can be copied with the PC editor).
( hold button 3 (preenfm2) to modify the env of all operators at the same time / in the tips here).

And the modulator enveloppes must be very simple : value 1 all the time.

Amplitude modulation or vibrato can be done with the matrix modulation.

And i think you can add a little noise (by using more operators) and use the "crusher" effect to get a slighty dirtier sound if  that's what you're after.

So no miracle recipe but you need to know how this card works to mimic the sound.
« Last Edit: July 29, 2021, 06:03:49 AM by Xavier »

ericd

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Re: Making Sega/adlib type sounds?
« Reply #2 on: July 30, 2021, 01:52:37 PM »

( hold button 3 (preenfm2) to modify the env of all operators at the same time


Can we do this on the FM3?

Xavier

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Re: Making Sega/adlib type sounds?
« Reply #3 on: July 31, 2021, 11:20:10 AM »
( hold button 3 (preenfm2) to modify the env of all operators at the same time
Can we do this on the FM3?

Sure it's "MENU" + turn encoders.

It works in :
EDIT > Oper > (ADS and R)
And also in
EDIT > FM > IM (to modify all IMs).
I just tried and it seems
"EDIT > FM > Mix" does not work although it should / Bug.

You will see the value turning Green (instead of Yellow) if several params are modified.

ericd

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Re: Making Sega/adlib type sounds?
« Reply #4 on: July 31, 2021, 01:50:43 PM »
 ;D

Jverchot

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Re: Making Sega/adlib type sounds?
« Reply #5 on: August 02, 2021, 08:31:40 AM »
ok, I've been messing with this for.... probably 40 hours off and on, and there's ALOT of timbres I can't get with 6 operators that other fm synths can get with 2..... in particular, a sort of metallic or more complex sound.

...Like, instead of getting more subtle harmonics, the sound just gets messier, or doesn't go anywhere....


EDIT: Nevermind... I figured out why.
« Last Edit: August 02, 2021, 09:32:04 AM by Jverchot »

realms_of_chaos

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Re: Making Sega/adlib type sounds?
« Reply #6 on: August 02, 2021, 11:37:13 PM »
EDIT: Nevermind... I figured out why.

Care to share? Might be helpful for other users. Gain too high, or something else?

julientaq

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Re: Making Sega/adlib type sounds?
« Reply #7 on: October 03, 2021, 02:37:57 PM »
hi there!

That’s exactly what i’m after. I’m a beginner at synth, but i love that FM sound (especially that Mega drive bass)
I’m trying to replicate that (it’s a 4 fm chip, well documented), but i’m having a hard time to figure out how you do what you can in FM.

So if you’re up to sharing your patch, i’m really curious :)

Thanks!

julientaq

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Re: Making Sega/adlib type sounds?
« Reply #8 on: October 03, 2021, 10:15:57 PM »
Ok. so this may be the link we need for sega patches

https://loveemu.hatenablog.com/entry/Guide_for_Extracting_FM_Synth_Presets_of_Sega_Genesis

I have to find a windows computer now :/