Re: About Roland Virtual Sound Canvas 3

Posted on 2020-09-25, 15:20

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

I wonder if companding only applies to the hardware counterparts. I hadn't looked at the sizes of the VSC .DAT files prior to now, but assuming we're still dealing with ~6MB of uncompressed data (as concerns the 1.72MB VSC55.DAT file), there's a greater reduction in size than what 2:1 companding …

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Re: About Roland Virtual Sound Canvas 3

Posted on 2020-09-24, 13:43

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by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

mattw wrote on 2020-09-24, 09:39: ...or its Sound banks use some "encoding" and need processing before they become wave PCM data. In theory, the Roland PCM data is mu-law companded.

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Re: Apparently not all GS-only sc-55s are the same, some are GM

Posted on 2020-09-18, 18:57

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by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

I believe the 2.00 units fix the GM reset being interpreted as GS reset issue, resulting in issues with some Build engine games. However that's based on reading other posts here, not my own first-hand experience. I'm not sure that I'm familiar with the Build issues. Hypothetically though, a …

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Re: Apparently not all GS-only sc-55s are the same, some are GM

Posted on 2020-09-18, 18:12

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by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

Sorry for the necroposting, but why SC-55 v1.2x and not v2.00? What does v2.00 "loses"? Is it the whole CTF fiasco? Or the GM reset? Or what? The program change behavior when selecting drum sets differs slightly between the v1.2x and v2.00 SC-55 units (thats v2.00, not mkII; the latter of which …

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Re: New sound card project: AWE64 Legacy

Posted on 2020-09-13, 03:37

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by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

I imagine that the 49,716Hz digital output from the OPL core those cards gets re-sampled to 44.1 KHz for SPDIF output, or does it and if so how ? The output sample rate of the OPL3 does get converted by the EMU8000, but the exact means (presumably) remains speculative. There was a whole thread …

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Re: Looking for a list of dos games that require an intelligent mode MPU-401

Posted on 2020-09-11, 17:29

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by Cloudschatze

in DOS

in DOS

Beyond just the three or four bytes of buffering per MPU track that may reduce busy/wait output cycling (where most of the applicable games utilize just a single MPU track besides), a majority of the games "requiring" intelligent-mode MPU compatibility don't actually leverage the MPU feature set in …

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Re: Identifying components on Gravis Ultrasound MAX Rev. 1.8 and Roland SCB-7

Posted on 2020-09-10, 15:26

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by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

TDK's ACF451832-103-TD01 is a suitable filter replacement for those missing on the SCB-7. I performed a similar repair on an SCB-55 several years ago:

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Re: Newly written driver(s) for Sierra's Creative Interpreter – Starting with Plantronics ColorPlus

Posted on 2020-09-04, 21:11

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by Cloudschatze

in Marvin \ Video

in Marvin \ Video

Someone actually wrote an Olivetti M24 640x400 monochrome mode SCI driver, years ago! I believe it was some Swedish guy. Anders Olsson. :) The Olivetti/AT&T driver you're referring to is included in an archive of files that he sent me several years ago: http://www.symphoniae.com/elw/sierrautil.zip

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Re: Seeking suggestions for first ISA model sound card for new dos rig

Posted on 2020-09-02, 18:22

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by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

dionb wrote on 2020-09-02, 18:07: digistorm wrote on 2020-09-02, 16:50: I can’t hear the noise of a CT1740 above the noise of an appropriate retro pc of that era anyway 🤣 Then you need bigger loudspeakers 😜 Or, perhaps his card is just appropriately configured. 😉

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Re: MT-32 PCM list

Posted on 2020-08-26, 21:26

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by Cloudschatze

in MT-32 General

in MT-32 General

digger wrote on 2020-08-26, 21:19: Interesting. Until now I assumed that since the CM-32L was basically an MT-32 with additional built-in sound effects, the original MT-32 wouldn't have a lot of those. Hope I'm not misunderstanding the comment, but just to clarify, the "Bank 2" waveforms in the …

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Re: MT-32 PCM list

Posted on 2020-08-26, 21:07

by

by Cloudschatze

in MT-32 General

in MT-32 General

Anyway, just for the sake of curiosity, do you have any information on where the list is compiled from which document? The information from Roland Japan was provided as a typed list in response to an e-mail inquiry I'd made back in 2005. I imagine it came from some internal documentation of theirs. …

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Re: Sb16 Value CT2770 with CT1747 OPL chip - any good? What can you tell me about it?

Posted on 2020-08-26, 20:22

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by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

I thought majority of the noise was due to the CT1703 DAC revision used on the card? Interesting. I always wrote mine off because it has a CT1703-T which is considered noisy. Incidentally, my CT2770 has a CT1745-S, is this a more or less desirable mixer chip? I'd suggest arriving at your own …

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Re: PS/2 MCA Soundoptions

Posted on 2020-08-26, 15:53

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by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

The combination of a Disney Sound Source, Resound 2 or Plaid Bib, and serial-port MIDI (either via SoftMPU or modified drivers) would provide a fair amount of coverage.

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Re: MT-32 PCM list

Posted on 2020-08-23, 17:45

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by Cloudschatze

in MT-32 General

in MT-32 General

Here is some information that I'd compiled several years ago. The 128 waveforms in "Bank 1" pertain to the MT-32; the list for which was provided by Roland Japan.

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Re: Any recommendations for a midi Selector, switch?

Posted on 2020-08-13, 03:14

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by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

Cloudschatze, Yes I agree that it's a bit overkill at the moment. I'm just thinking a head as well, if I want to get more modules in the future and connect to several computers with an ease of a switch-box and do some comparing. I'm quite new at this with midi and your suggestion will work the best …

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Re: Any recommendations for a midi Selector, switch?

Posted on 2020-08-11, 23:05

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

For a MIDI setup involving just an MT-32 and SC-55, a splitter or switch is a bit overkill. I'd simply route the MT-32's audio output through the SC-55, MIDI-chain the two, and then "switch" between them both using SysEx. Job done.

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Re: So I replaced the v4.13 DSP on my SB16 CT2910 with a v4.05...

Posted on 2020-07-14, 18:21

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by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

That behavior is a consequence of the SB16/AWE's shared MCU architecture, lack of adequate MIDI output buffering, and sound drivers that either busy/wait things out during concurrent PCM operations (resulting in gameplay slowdown), or simply drop MIDI messages after retry exhaustion. I haven't …

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Re: So I replaced the v4.13 DSP on my SB16 CT2910 with a v4.05...

Posted on 2020-07-14, 15:31

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

Got a friend to swap a 4.05 onto a CT2290. Going to see how that goes. The trades are generally on cards that do not have a CT1747. Down-leveling to v4.05 only makes sense with cards bearing the DSP v4.1x and CT1746A/B bus-interface chip combination, all of which exhibit the spurious/latched MIDI …

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Re: First dos sound blaster game.

Posted on 2020-07-09, 05:21

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by Cloudschatze

in Marvin \ Software

in Marvin \ Software

Cloudschatze wrote on 2018-03-23, 02:32: Activision's "Tongue of the Fatman," 09/21/1989, also has latent (and working) Sound Blaster PCM support, beating-out Ghostbusters II by a few days. Hooray. And another Activision title takes the lead! - "The Manhole," with its 09/05/1989-dated executable.

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Re: Bought these (retro) hardware today

Posted on 2020-07-02, 21:44

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by Cloudschatze

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

appiah4 wrote on 2020-07-02, 21:38: (Also a plethore of random S3, ATI, etc. PCI/AGP video cards and Creative, OPTi etc. sound cards not worth mentioning) There's a Yamaha SW60XG in the third photo.

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