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DOSBox Adlib Emulation

Posted: Fri Aug 06, 2010 12:32 pm
by MusicallyInspired
I made some recordings. Actually OPL emulation seems to have improved quite a bit from when last I tested it. Beforehand I noticed that stereo Adlib emulation wasn't near as good as my AWE32. Even so, it does seem to do a lot more hard panning than my AWE32. I ran DOSBox with OPL2dual (like the AWE32), both the mixer and opl rate set to 49716, and sbtype set to SB16 (which I think is what the AWE32 has). At first glance the DOSBox stream seems higher quality but I believe that's due to the way I recorded from the AWE32. I ran it from my 486 sound card, to a 6-channel mixer, to my sound card's line input. Between all the connections and the wiring there's probably some signal degradation. And I don't think the Audigy 2 ZS's input quality is the best either so there's some background computer noise coming from both computers probably.

Getting past that, the instruments sound identical. The only things I noticed was that some instruments would drop out in DOSBox from time to time. I couldn't find a polyphony setting in the dosbox.conf file so I'm guessing it comes down to the emulation. The other thing is that some instruments are panned farther left and right than the AWE32 makes them out to be. Here's the recordings I made.

Space Quest III (DOSBox)

Space Quest III (AWE32)

Re: DOSBox Adlib Emulation

Posted: Fri Aug 06, 2010 3:08 pm
by dotkel50
To my tin ear they sounded the same.

Re: DOSBox Adlib Emulation

Posted: Sat Aug 07, 2010 3:36 am
by Tawmis
The Awe32 seems to have a few "additional" notes to make it sound a little crisper. Or it could be my imagination and my inexperienced ear of music like this.

Re: DOSBox Adlib Emulation

Posted: Tue Aug 17, 2010 12:38 am
by envisge0ne
Gotta say they sound almost identical to me. I listened to them back and forth a few times and couldn't really tell the difference. To be honest, I can't imagine being so nit-picky that you'd prefer the real one over DOSBox.

Re: DOSBox Adlib Emulation

Posted: Tue Aug 17, 2010 1:32 am
by MusicallyInspired
You need to re-read my post again. I admitted that they sound identical with the only difference being that DOSBox emulation inappropriately drops some instruments while the real thing doesn't. So it's not perfect. Check 0:08 on the DOSBox emulation track.

Re: DOSBox Adlib Emulation

Posted: Tue Aug 17, 2010 6:01 am
by Qbix
I have a hard time noticing it. but to investigate it further.
could you do a dro capture of that sound stream ? (ctrl-alt-f7)
as I don't have have sq3.

the shorter the capture of a missing note the better.

Re: DOSBox Adlib Emulation

Posted: Tue Aug 17, 2010 10:23 am
by MusicallyInspired