49716 is the internal rate of a real opl2 card.
old is the 0.72 version

Qbix wrote:

49716 is the internal rate of a real opl2 card.
old is the 0.72 version

so conclusion is that dosbox 0.73 just uses higher quality emulation but it should sound the same as dosbox 0.72?

No, how ever you drew that conclusion.

wd wrote:

No, how ever you drew that conclusion.

because in dosbox 0.72 you can only choose 48000 Hz as maximum frequency.
Dosbox 0.73 uses higher frequency so logically thinking it's better audio quality?

Can you tell me what the difference between dosbox 0.72 and 0.73 opl emulation is then, if I'm wrong?

thx

because in dosbox 0.72 you can only choose 48000 Hz as maximum frequency.

Says who? There's no such limit.

Can you tell me what the difference between dosbox 0.72 and 0.73 opl emulation is then, if I'm wrong?

Different emulation core, check the sources if you need details.

wd wrote:

Says who? There's no such limit. […]
Show full quote

because in dosbox 0.72 you can only choose 48000 Hz as maximum frequency.

Says who? There's no such limit.

euhm, why is 48000 then indicated as highest value in conf file of dosbox 0.72 and suddenly in dosbox 0.73 there is a higher value 49716 added?

Can you tell me what the difference between dosbox 0.72 and 0.73 opl emulation is then, if I'm wrong?

Different emulation core, check the sources if you need details.

Yes, but I'm not a programmer. I would like in human words an explanation between the emulation cores of opl. Do they sound different or do they all sound the same but just different workload for the pc?

thx

Don't you hear the difference??

h-a-l-9000 wrote:

Don't you hear the difference??

so I can conclude then those different opl emulation cores of dosbox 0.73 all sound different?

But what opl emulation core is the 'real' emulation of the original sound blaster 16 card then? 😕

I'm confused because nobody really explains it after re-asking this question

they are all attempts at emulating the "real" sound

To make things clear :
Old is based on an old version of the MAME OPL2 emulator. Newer versions of this code cannot be used because of license issues.

Fast and Compat are new cores, based on an emulator written by Ken Silverman (of Duke Nukem 3D), and improved by the DOSBox team (Harekiet). They should sound better than the old one.

The 49716Hz sampling frequency should give the most accurate results. Not because it's higher, but because that's what the real thing used.

Some sound cards (usually the cheap/integrated ones) cannot handle custom sampling rates, this might explain your limitations. You can still use the OPL emulation at the optimal frequency, then set the mixer at 48000Hz.

Zorbid wrote:

To make things clear :
Old is based on an old version of the MAME OPL2 emulator. Newer versions of this code cannot be used because of license issues.

do those new emulators only work when 'oplmode' is set to 'opl2' or also when it's set to other values like 'opl3', ...?

I have still 1 question: what's the 'default' value of 'oplemu'?
So in other words, what emulator is used when I choose 'default' there?
Is it 'old', 'compat' or 'fast' or even another one?

thx!

OPL 2 and 3, actually, yes for both the old and the new emus.

what's the 'default' value of 'oplemu'?

Currently it's fast.

Zorbid wrote:

Fast and Compat are new cores, based on an emulator written by Ken Silverman (of Duke Nukem 3D), and improved by the DOSBox team (Harekiet). They should sound better than the old one.

What's the difference in sound output between fast and compat?
Or are they the same but 'fast' tries to use less cpu cycles?

Zorbid wrote:

Fast and Compat are new cores, based on an emulator written by Ken Silverman (of Duke Nukem 3D), and improved by the DOSBox team (Harekiet). They should sound better than the old one.

where can I download Ken's emulator (and source)?

What's the difference in sound output between fast and compat?

None ideally.

where can I download Ken's emulator (and source)?

Silverman's homepage obviously.

wd wrote:

None ideally.

What do you mean by 'ideally'? Are they 100% the same or what are the differences?

wd wrote:

Silverman's homepage obviously.

I searched on http://www.advsys.net/ken/ but can't find it. Can you give me the link please?

Are they 100% the same or what are the differences?

Capture two samples, adjust the play start and do a binary diff.

I searched on http://www.advsys.net/ken/ but can't find it.

http://www.advsys.net/ken/download.htm

wd wrote:

Capture two samples, adjust the play start and do a binary diff. […]
Show full quote

Are they 100% the same or what are the differences?

Capture two samples, adjust the play start and do a binary diff.

I searched on http://www.advsys.net/ken/ but can't find it.

http://www.advsys.net/ken/download.htm

- yes, of course. But you wrote dosbox, can't you tell me in human language what the difference is? I'm not a developer.

- Sorry but I can only find games he made there. Where is the SB16 emulator?