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Conference napalm::commusic_v1

Title:* * Computer Music, MIDI, and Related Topics * *
Notice:Conference has been write-locked. Use new version.
Moderator:DYPSS1::SCHAFER
Created:Thu Feb 20 1986
Last Modified:Mon Aug 29 1994
Last Successful Update:Fri Jun 06 1997
Number of topics:2852
Total number of notes:33157

620.0. "Mirage Stereo Modification and Sample Conversions" by NOVA::RAVAN () Mon Dec 22 1986 16:00

    I just finished reading some of the notes on samplers and I started
    thinking...
    
    I have a Mirage which I'm ... sort of ... pleased with. I'm picky about
    sound quality and that could be better.  But just like most everyone
    else, I don't have infinite amounts of money to spend. 
    
    What I *would* like is a larger library of samples.  I have an Amiga
    and it has a disk driver that can read raw data from any constant-speed
    3.5" or 7.25" floppy drive.  So I thought, "Gee, bet I could write
    a program to read disks written for different samplers (Emu and
    Prophet, for example, Fairlight maybe?) and convert them to Mirage
    format."
    
    Given that this is technically feasible, the question that remains is
    "How legal is this?"  If I do it for myself, and buy all the original
    sample disks, I assume there is no problem.  Am I wrong? If I give
    these converted disks away, or try to sell them, are there any
    problems? 
    
    (This is all hypothetical.  I will probably never find the time
    to do this...)
    
    A collolary question: "Anyone else already doing this?"
    
    -jim
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620.1I was going to ask about this, anyway...AKOV68::EATONImpressionable YouthMon Dec 22 1986 16:1014
RE: Note 620.0 by NOVA::RAVAN 
    
>    A collolary question: "Anyone else already doing this?"
    
	Sort of.

	I just noticed the ad in the back of Keyboard magazine for the Oberheim
DPX-1 - 'Digital Sample Player'.  It will read sample disks from the three
"most widely used" samplers - Emu II, Prophet 2000 and Ensoniq's Mirage.

	I would guess, as the name implies, it is read-only.  Didn't see any
price tag.  Anyone know anything about it?

	Dan
620.2Prove it, Tom\16514::MOELLERSALSA::MOELLER Tucson AZ USA Sol3Mon Dec 22 1986 19:1413
    Oberheim was Chapter 11 earlier this year. Not too many stores carry
    this gear.. I feel it's quite naive to expect to have my hands on
    Emulator disks (5 1/2")... but they've obviously unlocked the operating
    system and disk format for various other samplers. Seems like a
    solution for a nonexistent problem... unless the price is WAY down
    there, in which case I'll take two. More GLARING omissions from
    the ad: note range. number of simultaneous voices. ability to
    reconfigure a keyboard program. amount of memory. I suspect it is
    indeed a play only unit, with NO rewrite capability.. nice, *IF*
    all the samples you get are already set up in perfectly usable
    playable programs... NFW...
    
    karl
620.3CANYON::MOELLERWhat was the question ?Tue Dec 23 1986 21:125
    This is for Jim Ravan.. Jim, check out that issue of Electronic
    Musician, about how to STEREOIZE your Mirage for ~$10 in parts..
    also claim a cleaner signal ! I assume yours is out of warranty..
    
    karl
620.4FCO my VCO? NFW!JAWS::COTEMIDI Christmas to all!!Wed Dec 24 1986 11:1615
    I read it and decided against it.
    
               1. Retrofit disables volume slider, leaving me
                  dependent on a keyboard mixer.
    
               2. Image is not what I call stereo. To me, a stereo
                  piano patch would pan dependent on pitch. The
                  FCO sends groups of notes either hard left or
                  hard right depending on which oscillator was being
                  used. A full keyboard arpeggio would bounce back and
                  forth between left and right. A cute effect ocassionally,
                  but I think I'd get tired of it quick. Pan pots
                  would minimize effect though.
    
    Edd
620.6The DPX-1, by OberheimAKOV68::EATONImpressionable YouthWed Dec 24 1986 12:0413
RE Note 620.2 by 16514::MOELLER 


> Seems like a
> solution for a nonexistent problem... unless the price is WAY down
> there, in which case I'll take two. 

	Curiosity got the better of me, so I called a New York retailer.  They
said the DPX-1 was not yet available.  I asked them for a ballpark price and
they said it's listing for around $2000.

	Dan

620.7Good StuffNOVA::RAVANWed Dec 24 1986 12:0820
    You betcha!  At this point my Mirage is WAY out of warranty.
    
    I agree with -.1 about the retrofit.  Disabling the volume slider
    is a real drag, and per-oscillator bouncing is not what I would
    normally call 'stereo'.
    
    What I *DID* like about the article *A LOT* was the overall description
    of how the Mirage works inside and all the things you can do to
    it in general.  I'm very interested in contacting the op amp folks
    the author mentioned and getting the low noise op amp.  Old Mirages
    like mine are pretty noisy, at least compared to my DX-7.  I also
    liked the idea of using the 8 LPFs via Midi for filtering external
    sounds you route into the board from outside.  Nide idea.
    
    As a side note, articles like this are the reason I much prefer
    ELECTRONIC MUSICIAN to KEYBOARD, et. al.  This one article was worth
    the price of my subscription this year.

    Thanks for the pointer,
    Jim
620.8Ping-pong stringsCANYON::MOELLERWhat was the question ?Wed Dec 24 1986 14:5911
    re the Mirage mod... I don't disagree with your points of view,
    but, hell, the 'per oscillator bouncing' is the way both the Prophet
    2000/2002 and the AKAI S900 do their 'stereo' outputs.. not bad
    company. Plus, the article was strangely vague as exactly what to
    expect regarding the stereo image after you're done. Plus, the
    disabling of the volume slider ain't THAT horrible. I never touch
    the volume adjustment on my piano rackmount. Plus, there ARE stereo
    volume pedals available, Plus... I've run out of plusses. Have a
    GOOD holiday and I hope Santa is kind.
    
    karl
620.9JX-10 Whole Mode StereoDRUMS::FEHSKENSThu Jan 08 1987 16:157
    Yeah, the JX-10 does it too, in "whole" mode - notes get assigned
    successively to the 6 "upper" modules, then to the 6 "lower" modules,
    etc..  Dumb - in whole mode they should route the modules' outputs
    to *both* sides;  I think that's what the Super Jupiter does.
    
    len.
    
620.10SKYLRK::MESSENGERThings fall apart -- it's scientificFri Mar 27 1987 16:225
    
    Yes... be aware, however, that if you do the Mirage mod that you
    will lose half your simultaneous voicing capability... I believe
    you go from 8 voices to 4...
    				- HBM