Re: Did System Shock supported MT-32?

Posted on 2019-11-18, 07:27

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by sergm

in MT-32 General

in MT-32 General

Yet if it comes to emulating GM with MT-32, sadly it will never be complete. One may achieve more or less adequate results with two physical units only (or two munt cores, or a combination, heh). To give it a go, I think it's easiest to use Falcosoft Soundfont Midi Player which implements GM …

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Re: Did System Shock supported MT-32?

Posted on 2019-11-18, 06:02

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by sergm

in MT-32 General

in MT-32 General

Toy: MT-32 General Midi drivers for Miles Sound System and HMI SOS games

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Re: *START HERE* SoftMPU 1.91 - Software Intelligent MPU-401 Emulator

Posted on 2019-10-12, 09:05

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by sergm

in SoftMPU

in SoftMPU

@appiah4: I've been playing a little with VDMSound for Win9x and seemed to provide an emulation of the Intelligent mode. What this thing does is routing the game's output to the default Windows MIDI port, which can happily be your UART. @bjwil1991 I'm not 100% sure how solid the implementation is, …

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Re: MT-32 1.x ROM upgrade to 2.x possible?

Posted on 2019-05-27, 05:40

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by sergm

in MT-32 General

in MT-32 General

AFAICT, the "old" and the "new" MT-32 versions differ significantly in the addresses used for hardware ports (e.g. the LA32 ports), so the control ROM version can only be upgraded along with the main board (as per the MT-32 Service Notes too).

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Re: Munt Reloaded - Development

Posted on 2019-03-30, 06:30

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by sergm

in MT-32 Development

in MT-32 Development

Certainly, mt32emu-qt_WITH_QT5 is TRUE by default (and for a long time). Sounds like there is some weirdness with the system config, so I do agree with package removal strategy in this case 😀

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Re: Falcosoft Soundfont Midi Player + Munt VSTi + BassMidi VSTi

Posted on 2019-03-09, 11:20

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by sergm

in Release Announcements

in Release Announcements

Hi, Actually I have already implemented a multi-threaded version of the plugin long time ago that runs the 2 synths on 2 different threads but I have met some rare threading issues. Hi Zoltan, Yes, threading issues can be very nasty. In order to make the code reliable, we introduce locking that may …

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Re: Falcosoft Soundfont Midi Player + Munt VSTi + BassMidi VSTi

Posted on 2019-03-09, 10:42

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by sergm

in Release Announcements

in Release Announcements

I just re-tested it with 128 partials, as you suggested - still 30% is the peak load. Note, my system is dual core, so it's still much room to fill up ;) But I guess, the comparison can't be adequate anyway because of those additional MIDI channels. On the other hand, I don't fully understand why …

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Re: Falcosoft Soundfont Midi Player + Munt VSTi + BassMidi VSTi

Posted on 2019-03-09, 09:24

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by sergm

in Release Announcements

in Release Announcements

Though, to serious, I don't really see a performance problem with the mt32emu engine. I played it with mt32emu-qt/64 partials/float mode - CPU load doesn't rise above 25% (G4400 @ 3.30GHz). Indeed, that's a cheat since mt32emu-qt outputs integer audio to the system. Another thought, increasing the …

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Re: Falcosoft Soundfont Midi Player + Munt VSTi + BassMidi VSTi

Posted on 2019-03-09, 09:16

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by sergm

in Release Announcements

in Release Announcements

My fix to the Roland User's problem: reduce tempo down to the standard 120 BPM 😀

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Re: mt32emu-smf2wav - playback too fast

Posted on 2018-10-21, 18:26

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by sergm

in MT-32 Development

in MT-32 Development

Well, not so sad, I hope. At least, I've pushed a fix for our copy of libsmf that seemingly works, and updated mt32emu-smf2wav. New binaries for Windows are available at https://sourceforge.net/projects/munt/files/munt/2.3.0-Updates/ . As for the future of mt32emu-smf2wav, I'd consider it deprecated …

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Re: mt32emu-smf2wav - playback too fast

Posted on 2018-10-21, 16:56

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by sergm

in MT-32 Development

in MT-32 Development

Yikes. I suppose libsmf is dead by now... The mainstream version at SF still contains this bug, and it claims that the development has been moved to github, but the link is 404. I can find a fork at github but it sill contains that bug...

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Re: mt32emu-smf2wav - playback too fast

Posted on 2018-10-21, 16:31

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by sergm

in MT-32 Development

in MT-32 Development

Ugh, the version of libsmf we use really has a bug in parsing meta events with sizes > 130 bytes, so everything later the address 0x4986 in track 1 of that file isn't processed (including the Tempo change event).

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Re: mt32emu-smf2wav - playback too fast

Posted on 2018-10-21, 14:25

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by sergm

in MT-32 Development

in MT-32 Development

It appears, mt32emu-smf2wav truncates something that doesn't affect sounding much, probably some unsupported meta data. On the other hand, we seemingly have here a genuine tempo issue. That file has BPM set to 100, and mt32emu-qt recognises this properly. For instance, if you try to play this file …

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Re: mt32emu-smf2wav - playback too fast

Posted on 2018-10-21, 11:12

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by sergm

in MT-32 Development

in MT-32 Development

Well, don't you get some error messages when trying to convert this file using mt32emu-smf2wav? It doesn't seem to be able to handle all the content of the file properly, so prints messages like these: ** (mt32emu-smf2wav.exe:4256): CRITICAL **: End of buffer in extract_midi_event(). ** (mt32emu- …

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Re: Munt Reloaded - Development

Posted on 2018-09-29, 18:49

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by sergm

in MT-32 Development

in MT-32 Development

And I was wondering: where this order information came from? Or what technique was used to see what bits are shuffled? I am looking at the MT-32 Service manual and can't see any mismatching datalines. (at the moment) Is the shuffling done inside the LA32? Sorry, this is not my part in the project …

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Re: Munt Reloaded - Development

Posted on 2018-09-29, 08:29

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by sergm

in MT-32 Development

in MT-32 Development

I'm still looking at how Roland compresses the samples. That's how I stumbled on this thread. Because I hope that the algorithm Roland used to compress samples for the MT-32 would be the same as for the D-110, and maybe also the U-110/U-220. They are all from the same time period. And as the MT-32 …

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Re: Which "old-type" Roland MT-32 to get for DOS games?

Posted on 2018-06-25, 11:27

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by sergm

in MT-32 General

in MT-32 General

Kaminari wrote: I'd be surprised if any game released after 1989 would specifically require a MT-32 At least one such a game comes to my mind: Dune 2.

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Re: Which "old-type" Roland MT-32 to get for DOS games?

Posted on 2018-02-13, 17:33

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by sergm

in MT-32 General

in MT-32 General

I'm afraid, munt will never sound identical to the real units, only better :) Well, as for the subj, the answer really depends on the scope of the preferred games. If 100% compatibility with old Sierra titles is preferred, this unit is likely the one you need. Although beware, the serial ID does not …

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Re: Munt - distorted patch sound?

Posted on 2018-02-09, 17:09

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by sergm

in MT-32 Development

in MT-32 Development

I suspect, Spikey is right. There is a distortion in the LA32 ring modulator (and other places) which can be revealed like this. I added emulation of it in recent versions of the mt32emu core ( see relevant commit ), so no surprise it was missing in version 1.0 :) I've just made a capture from CM-64 …

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Re: munt CPU speed requirements?

Posted on 2017-11-22, 06:54

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by sergm

in MT-32 General

in MT-32 General

nogmog If your CPU load is below 100%, you can usually achieve dropless playback by increasing audio buffer. I think the generic approach here is measuring the time spent on conversion MIDI->WAV. If your system is able to perform the conversion in less time than the duration of the tune (with some …

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