VOGONS

Search

Common searches

Search results

Display options

Display options

Re: DOSBox & MT32 diff

Posted on 2004-05-03, 19:01

There are a ton of differences between the MT32 dosbox and the "official" dosbox. It should be self-evident what code is needed for MT32 emulation. Try any diff application out there to get a good view of what the differences are.

Re: Could someone please hash the MT32 rom file?

Posted on 2004-05-03, 18:55

Does the MT32 emu verify the ROM file in any way when loading it? Any CRC checksum or something like that? No.. There is no verification to the ROM file at all, it will either work and create nice sounds, or sound like fingernails screeching down a chalkboard. The emulator simply reads in to the …

Re: My Version of the MT-32 Emulator

Posted on 2004-04-24, 21:02

Yep.. I've played around a bit with the existing freeverb stuff. Very nice sounding reverb. I'm using an unmodified version of the Resonant IIR filter, right now.. in searching for information on how it worked, I've found that particular code all over the place.. I took the existing unmodified form …

Re: My Version of the MT-32 Emulator

Posted on 2004-04-24, 15:50

Here is one of the most comprehensive I have seen http://www.ee.vt.edu/~jnoronha/dsp_proj2_report.pdf Anoher http://www.mathworks.com/access/helpdesk/help … l/filterd5.html Java Applet that calculates freq response: http://www.digitalfilter.com/iircalwav/iircalwav.html

Re: My Version of the MT-32 Emulator

Posted on 2004-04-24, 02:36

That's just the first bit of it. I'm not exactly sure why you're trying to reimplement the MT-32 stuff when for all practical purposes my version is done. Just check out the code. If you have questions, feel free to ask. It needs some serious optimization and refactoring, but other than that, its …

Re: My Version of the MT-32 Emulator

Posted on 2004-04-23, 20:16

Sorry about the lag time in my reply. I've been busy with RealLife(tm), There are quite a lot of web resources out there. Basically, what I understand the filter to be boils down to this: The filter is an Infinite Impulse Response filter. Before samples can be passed into the filter, the filter …

My Version of the MT-32 Emulator

Posted on 2004-04-21, 22:07

Well, I have working partials, and am able to apply timbre parameters to them. Lately I have been tuning the sound (Synth Emulation is hard ) Here's what I've learned: Make not assumptions on how the hardware might interpret the parameters, chances are, you're wrong. The IIR filter is very cool, BTW …

On Rewrite

Posted on 2004-04-16, 13:40

CC: Hmm, I see from the topic you posted dealing with the legal dispute over the ROM data (hopefully, this gets sorted out eventually ...) that you're doing a complete rewrite? I've been working on a bit of a rewrite as well, on my end, I've got partials mostly emulated (TVF is somewhat working, TVA …

Re: Fun with ICL8

Posted on 2004-04-12, 19:58

kode54 wrote: W/N are interchangeable. According to the ICL doc, N enables some additional optimizations for the P4 Northwood. (W only enables SSE2 instructions...)

PCM ROM Loader -- Rehashed

Posted on 2004-04-12, 01:54

I've been working on rearchetecting the MT-32 Emulator, to see if I can come up with something that will finally rid it of it's (very few, but hard to find) niggling audio problems. One of the things that always chapped me when reviewing the code was the load procedure for the PCM ROM... Here's a …

Re: Fun with ICL8

Posted on 2004-04-10, 03:05

With optimization like that I'm going to have to try the Intel Compiler for use with the driver code! I'm going to give a shot here this weekend. I'll let you know how it goes. Just a small thought, don't do straight P4 (/QxN), try /QaxN, otherwise it will not run on PIII and below systems. Also -- …

Re: Fun with ICL8

Posted on 2004-04-09, 06:10

Just tried the profile guided optimization.... Compling for P4 only, using Parallelism, turning off /Op adding /O3 on my P4 2.6 HT, I can get up to 10,000 instructions per loop, with no skipping on the various Sierra games that have MT-32 support! 😁 Niiiice...

Re: Missing digital sound

Posted on 2004-04-09, 00:01

SoundBlaster emulation appears to be broken with the MT-32 DOSBox. It works perfectly in the normal DOSBox distribution. There are some differences between the distributions, so, you may want to try the normal release (but, you won't get the MT32 Music ....)

Re: Fun with ICL8

Posted on 2004-04-08, 23:59

Have you tried using the profile directed compilation option? Reports are that it can make quite a difference to a programs performance (30% increase is not so uncommon). Haven't tried it with DOSBox, yet, but I was meddling with the profile-driven and parallelism with POV-Ray, but I didn't really …

Fun with ICL8

Posted on 2004-04-08, 03:17

I've been fooling around with the intel compiler lately, and ... I'm fairly impressed. It seems to add a nice speed boost to the emulation. Basically, I'm just trying the features of the compiler using DOSBOX to get a feel for what it's capable of, so far, I've made a build for the P4, using SSE2 in …

Re: The MT-32 Panel Add-on -- Progress

Posted on 2004-03-28, 01:45

Wow! CC, Just downloaded the latest version, and .... wow! sounds great, now ;) A couple notes: It seems in a few very small places there's still some off-keyness manifesting. Still crashing under certain circumstances. (e.g. Play through Firehawk mission 6 music, it crashes at the end of the "boss" …

Re: The MT-32 Panel Add-on -- Progress

Posted on 2004-03-26, 16:22

I plan on doing something like that, eventually 😁 ... But, for the moment, I want to get the functionality down. I'm thinking about doing something skinnable (a-la winamp), I have lots of ideas on how to make this into really excellent eye candy! 😀

Re: The MT-32 Panel Add-on -- Progress

Posted on 2004-03-26, 04:36

Well, I've been working on the dialogs for patch browsing and this is what I have so far ... Yes, I'm sort of teasing a bit... ;) when everything is done, I'll release all of this as a separate bit, for anyone who wants to integrate it into their copy, if cc decideds to integrate it, then .... …

Re: The MT-32 Panel Add-on -- Progress

Posted on 2004-03-21, 15:33

I might vertically stretch the keyboard to accomodate that ... However, You can turn off/on the display of certain parts, so you can single things out if there is overlap.. Some things I've noticed, watching the pitch sliders: You can tell in firehawk that they were using the actual pitch wheel on a …

The MT-32 Panel Add-on -- Progress

Posted on 2004-03-21, 02:45

Welp, Instead of posting to the new verison thread, I decied it was time I put this in it's own thread... Per vlader's suggestion, I now have the keyboard color-coded. I have added in a "currently playing" partial count, as well as volume, pitch and modulation sliders.

Page 1 of 2

Go to top of page Go to top of page
Close window
Close window