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- Frequently Asked Questions (FAQS);faqs.397
-
-
-
-
- Future additions will include a signal editor, and perhaps some
- sort of graphic display, although the latter would be tricky, given
- that for my current work I often find myself lining up as many as
- 500 sound segments to play.
-
- I am anxious for feedback and suggestions. This program will not
- work well on 030 machines. Enjoy it.
-
- Paul Lansky
- Music Department
- Princeton University
- paul@princeton.edu
- paul@silvertone.princeton.edu
-
-
- ---
-
- 3.3.5) What is RTLisp, and how can I get it?
-
- Answer:
-
- Date: Tue, 28 Jan 92 17:14:51 GMT
- From: Pete Yadlowsky <pmy@vivaldi.acc.Virginia.EDU>
- Subject: new Lisp interface to Lansky's "rt"
- Apparently-To: nextmusic@wri.com
-
-
- RTLisp runs on David Betz's XLisp and is comprised of a set of object
- class and function definitions which provide a Lisp interface to
- Paul Lansky's NeXT-based, real-time audio mixing software,
- `rt'. The rt user arranges audio material temporally,
- dynamically and spatially by means of a relatively simple grammar
- which is parsed and executed by rt's audio driver program. The
-
- simplicity of this grammar can make it rather tedious to use,
- though, especially in the realization of complex `scores'. Also,
- there is no provision for the programmatic generation of audio
- events, so every event must be specified in detail by hand.
-
-
- RTLisp was designed to facilitate the process of rt score
- creation. It equips the composer with a powerful, interactive
- high-level programming environment (Lisp), and lends some
- intelligence to tasks such as temporal placement and grouping of
- audio events, control of dynamics in the stereo field and rt
- `track' assignment.
-
-
- RTLisp can be thought of as a sort of rt command compiler. It can run
- standalone in a shell window, controlling the rt audio driver
- directly, or it can run in conjunction with rt.app, Mr. Lansky's
- NextStep interface to the driver.
-
-
- RTLisp is available in two different packages. The first, under
- NeXTrt.tar, contains rtlisp binaries and scripts merged with a
- new version of rt.app, along with an RTLisp chapter in rt.app's
- online documentation. The second, rtlisp.tar, does not include
- rt.app but does include binaries, lisp source, rt's audio driver
- and XLisp and rtlisp documentation.
-
-
- anon ftp: uvaarpa.acc.virginia.edu:/pub/next/Apps/NeXTrt.tar.Z
- uvaarpa.acc.virginia.edu:/pub/next/bin/rtlisp.tar.Z
- princeton.edu:/pub/music/NeXTrt.tar.Z
- princeton.edu:/pub/music/rtlisp.tar.Z
-
- ---
- Peter M. Yadlowsky | Laden e-mail runs
- Academic Computing Center | Bumbling, creaking through the net
- University of Virginia | Sysadmins tremble.
- pmy@Virginia.EDU | - after Buson
-
-
- ---
-
- 3.3.6) What are Patchmix and StochGran and how can I
- get them?
-
- Answer:
-
- Date: Wed, 29 Jan 92 14:15:04 GMT-0500
- From: mara helmuth <mara@silvertone.Princeton.EDU>
- Subject: Patchmix and StochGran
- Apparently-To: nextmusic@wri.com
-
-
- I have put new versions of Patchmix and StochGran at the Princeton
- archive (Princeton.edu) in the "pub/music" directory. These are
- both NeXT interfaces. Patchmix is a graphical front end to Cmix
- which allows you to create instruments by connecting a patch of unit
- generator icons. StochGran is a granular synthesis instrument.
- The source code is there, and it is necessary to have Cmix installed
- to compile them. I'm still adding things, so let me know if you use
- them and have suggestions.
-
- Mara Helmuth
- mara@woof.columbia.edu
- mara@silvertone.princeton.edu
-
- ---
-
- 3.3.7) What is the IRCAM Signal Editor and how can I get it?
-
- Answer:
-
- Date: Thu, 30 Jan 92 10:36:18 PST
- From: daj@ccrma.Stanford.EDU (David Jaffe)
- Subject: Re: SoundKit vs MusicKit
- Apparently-To: nextmusic@wri.com
-
- davidfe writes about the problem of using the Music Kit and Sound Kits
- together, playing sound with the Music Kit,then playing sound with the
- Sound Kit, then having problems with the DSP.
-
- This is a well-known problem. Here's what's going on:
-
- The sound kit preempts whatever else is going on when it plays a sound.
- So it grabs the "sound-out link from the DSP" that the Music Kit is using.
- But it doesn't restore the link.
-
- Basically, the only way to do what you want (currently) is to close (or abort)
- the Orchestra, play the sound, and then open the orchestra again. If you
- are using the orchestra in timed mode (the default), you probably want to
- finish the performance too.
-
- I.e.:
-
- -playsound {
- [Orchestra abort];
- [Conductor finishPerformance];
- [sound play];
- }
-
- when sound is done:
-
- -soundIsDone {
- [Orchestra open];
- ...allocate SynthPatches and such, if necessary...
- ...activate Performers if necessary...
- [Conductor startPerformance];
- }
-
-
- Future releases of NeXT software should solve this problem.
-
- ---
-
- 3.3.8) Where can I find information about the NeXT
- MIDI driver?
-
- Answer:
-
- Date: Thu, 24 Oct 91 16:59:46 PDT
- From: Conrad_Geiger@NeXT.COM
- To: nextmusic@silvertone.Princeton.EDU
- Subject: MIDI driver documentation
-
- Draft Documentation Available - MIDI driver documentation
- NeXT Publications Group
-
- A new document describing the MIDI driver is available on the
- Internet archive servers. This document is a revised and expanded
- version of the Release 1.0 MIDI driver documentation, and is not
- present in Release 2 or in the hard-copy technical documentation.
-
-
-
- The document is available by anonymous ftp (file transfer protocol)
- from one of the following Internet archive servers:
-
- ________________________________________________________
- hostname Directory
- ________________________________________________________
-
- cs.orst.edu pub/next/documents/TechSupportNotes
- sonata.cc.purdue.edu pub/next/submissions
- etlport.etl.go.jp (Japan) pub/NeXT/documents/MIDIDriver
-
-
- The two files that make up this draft document are:
-
- MIDIDriver.tar.Z
- MIDIDriver_README
-
- MIDIDriver.tar.Z is 54.2 kilobytes in size. Unarchived, it's a
- directory called MIDIDriver that occupyies 141 kilobytes and consists
- of:
-
- Introduction.rtf -- An introduction for users of MIDI on NeXT
- computers, including information on MIDI interfaces, the MIDI data
- format, and whether to use the driver functions or the Music Kit.
- DriverOverview.rtfd -- A conceptual overview of the NeXT MIDI driver.
- CFunctions/ -- Specifications of the MIDI C functions
-
- Your feedback on the document is welcome. See the file
- MIDIDriver_README for details.
-
- Doug Keislar
- NeXT Computer, Inc.
-
-
- ---
-
- 3.3.9) What is the status of the Music Kit on NeXT
- machines?
-
- Answer:
-
- Date: Mon, 27 Jan 92 09:54:03 CST
- To: nextmusic-list@wri.com
- From: doug@foxtrot.ccmrc.ucsb.edu (Douglas Scott)
- Subject: Re: Sound and Music Kits in 3.0?
-
- The Music Kit is no longer supported by NeXT under 3.0. It will not be bundled
- with the software. Development and management of it will be handled from now
- on by Stanford University. This is happening because of a complete lack of
- commercial interest in the Music Kit (as NeXT sees it). They feel the need to
- trim software support for things that will not directly contribute to the
- financial success of their company. They said they may re-introduce it at
- "some later time" once they have a chance to expand a bit.
-
- I learned all this from a session on "NeXT on Campus" at the NeXT Expo.
-
- Douglas Scott (805)893-8352
- Center for Computer Music Research and Composition
- University of California, Santa Barbara
- Internet: (NeXTMail ok) <doug@foxtrot.ccmrc.ucsb.edu>
-
- ---
-
- 3.3.10) What ear-training software is there for the NeXT?
-
- Answer:
-
- Date: Sun, 9 Feb 92 19:18:54 EST
- From: tholland@pars.skidmore.edu (Anthony Holland)
- Subject: New Music Ear Training Software for NeXT - Audio Challenger 1.0
-
- "Announcing the release of "AUDIO CHALLENGER 1.0"
-
- "Audio Challenger 1.0" is the first ear-training software released
- for the NeXT computer. Audio Challenger randomly generates ascending
- and descending melodic musical intervals which can be used in
- assisting music students in trying to improve their ability to
- aurally identify musical intervals. Audio Challenger features
- real-time synthesis on the DSP (digital signal processing) chip of
- the NeXT computer which gives it the advantage of a more natural and
- "lively" musical timbre than ear-training programs that currently
- exist on other platforms. Audio Challenger is released as FREEware
- to the internet archives by the researchers and students of DREAMS:
- Digital Research (in) Electro-Acoustic Music (at) Skidmore College.
-
- "Audio Challenger .0" is currently at the following archive sites:
-
- *Archive Info:
-
- filenames: AudioChallenger.tar.Z
- AudioChallengerREADME
-
-
- 1) location: nova.cc.purdue.edu
- directory: /pub/next/submissions (likely to move to
- /pub/next/2.0-release/binaries)
-
-
-
- 2) location: cs.orst.edu
- directory: /pub/next/submissions (likely to move to
- /pub/next/binaries)
-
-
-
-
- 3) University of Maryland: umd5.umd.edu
- /pub
-
-
- 4) ccrma-ftp.stanford.edu
- /pub
-
- After FTP'ing AudioChallenger.tar.Z, type: zcat AudioChallenger.tar.Z
- | tar xvf -
- note: you may need your system administrator to uncompress and untar
- AudioChallenger.
-
-
-
-
- Anthony G. Holland
- Associate Professor of Music
- NeXT Campus Support
- Skidmore College
- Saratoga Springs, NY 12866
- tel: 518-584-5000 ext. 2606
-
- next mail: tholland@pars.skidmore.edu
-
- ---
-
- 3.3.11)+ What is Hyperupic, and how can I get it?
-
- Answer:
-
- Date: Thu, 17 Sep 92 11:40:08 EDT
- From: "Christopher Penrose" <penrose@silvertone.princeton.edu>
- To: latta@xcf.Berkeley.EDU
- Subject: [Hyperupic released]
-
-
- [Sorry for the late inclusion... "real work"... sheesh... :) --crl]
-
-
- Hyperupic is an image to sound transducer implemented on a NeXT
- workstation. That's right, with Hyperupic you might be able to hear
- Whistler's mother. I think that he did all the whistling, actually.
-
- Hyperupic is inspired by the Upic system conceived by Iannis Xenakis.
- Feed Hyperupic a TIFF image, and Hyperupic will convert it into a
- sound. Hyperupic has the facility of using color has a sonic parameter.
-
- Hyperupic is free. Give it to your friends. Show it to your mother.
- I won't make you feel guilty (yet) for using my software. You can
- even claim that you wrote Hyperupic yourself! If you do this though,
- you might fall through the next subway grating that you trust will
- hold your weight.
-
- Hyperupic has on-line infotainment, including documentation.
-
- It is available via ftp at:
-
- princeton.edu
- cs.orst.edu
- nova.cc.purdue.edu
-
- or contact me:
-
- Christopher Penrose
- penrose@silvertone.princeton.edu
-
- ---
-
- 3.4.0) [IBM PC]
-
- ---
-
- 3.4.1) What are some public-domain (or nearly so)
- sample-editing programs for IBM-PC
- compatibles?
-
- Answer:
-
- Date: Wed, 15 Jan 1992 13:36:00 LCL
- From: Achim Haag <UJ69%DKAUNI2.bitnet@AUVM.AMERICAN.EDU>
- Subject: Re: Tetra compositor
- To: Multiple recipients of list EMUSIC-L <EMUSIC-L@AUVM>
-
- Hi,
-
- I don't know anything about the Tetra compositor, but I know two
- public domain programs, that are quite similar to Soundtracker.
- The first is called ScreamTracker (for PC). It has many functions:
- play in background, peak level meter, oscilloscope...
- Unfortunately it's shareware and the autor wants some $100 before he
- will send you a version that can SAVE your own created songs.
- It can handle many output devices (PC speaker via PCM, D/A-
- converter at an printer port, SoundBlaster (I believe!!!)), but I don't
- think it's worth this much.
-
- The second one - MODEDIT - is not quite as comfortably as the Scream-
- tracker, but it's public domain and therefore is worth it's money...
- Unfortunately it does *not* support SoundBlaster, but I've build a
- simple D/A-converter and now I can listen to the sounds on my stereo.
-
- [Nathan Torkington <gnat@kauri.vuw.ac.nz> says, on 18 August 1992,
- that "There is a program distributed with the later releases called
- ModRes which allows ModEdit to play the modules using the
- SoundBlaster, etc."]
-
- I've many samples from an amiga-user, so this shouldn't by a problem.
-
- Hope this information is useful for you.
-
- Bye, Achim
-
-
- ---
-
-
- ---
-
- 3.5.0) [Macintosh]
-
- ---
-
- 3.5.1) Which glove interfaces with the Max 'glove'
- object?
-
-
- Answer:
-
- Date: Thu, 20 Feb 92 16:03:49 CST
- From: James McCartney <james@astro.as.utexas.edu>
- To: max@dcs.edinburgh.ac.uk
- Subject: power glove
-
- The glove object uses the Gold Brick ADB interface from Transfinite
- Systems. (617) 969-9570 The cost is $169 for a user system or $245 for
- the developer model which provides LEDs for monitoring ADB activity
- and other stuff.
-
-
- ---
-
- 3.5.2) Where can I get a Macintosh program to
- translate between different soundfile
- formats?
-
- Answer:
-
- Date: Sat, 26 Oct 1991 16:25:22 -0700
- From: Tom Erbe <tom%MILLS.EDU@AUVM.AMERICAN.EDU>
- Subject: Soundfile header conversion program
- To: Multiple recipients of list EMUSIC-L <EMUSIC-L@AUVM>
-
- I just wrote a little program for the Mac that does Soundfile header
- conversion. It translates between IRCAM, NeXT .snd, Sound Designer II,
- AIFF and DSP Designer files. It will open any file as a 16-bit linear
- soundfile, if you want. I am making no attempt (at least not yet) to
- support anything other than 16-bit linear. You can also change things
- in the header like sample rate and number of channels. This is my
- first program for the Mac, so it might have bugs. If you want a copy,
- you can get it through ftp to "mills.edu", it is "ccm/SoundHac.hqx".
- Or I could mail it to you if you don't have ftp. Please send bug reports!
-
- Tom Erbe * Technical Director * Center for Contemporary Music * Mills College
- tom@mills.edu * Mills College, Oakland, CA 94613 * (510) 430-2191
-
- ---
-
- 3.6.0) [Amiga]
-
- ---
-
- 3.6.1) What software reads DCMS files and converts
- them to something else?
-
- Answer:
-
- Date: Mon, 24 Feb 92 15:29:58 -0800
- From: Phil Burk <phil@mills.edu>
- Subject: DMCS -> Copyist files.
-
- Many folks have asked about a conversion program that will read
- DMCS files and convert them to something else. The only program
- I know of is Copyist Companion by Nick Didkovsky. It converts
- DMCS files to Dr. T's Copyist compatible files. The main purpose
- is for printing good scores from DMCS files. Nick has talked about
- converting DMCS to MIDIFiles or other formats so ask him and maybe
- he will write it. You can order Copyist Companion from Dr T
- or from Nick directly. Nick is at:
-
- didkovsk@dorsai.com
-
- This program is for the Amiga.
-
-
- ---
-
- 4.0) [Hardware]
-
- ---
-
- 4.1.0) [Multi-platform hardware]
-
- ---
-
- 4.1.1) What are some good things with which to whack MIDI
- drum triggers?
-
- Answer:
-
- From: rich@cygnus.cygnus.com (K. Richard Pixley)
- Newsgroups: rec.music.synth
- Subject: great sticks for midi pads! (Wam-Rods)
- Date: 29 Dec 91 16:44:35 GMT
-
- If you use midi drum pads, run, don't walk, to your nearest phone book
- and start calling drum and music stores. You are looking for
- something called "Wam-Rods". They should run you $6-8 a pair. They
- are translucent softish plastic drum sticks, in several colors. The
- BIG win is that they do what they claim to do, which is put the bounce
- back in plywood feeling midi drum pads. They also seem to be a little
- easier on the pads themselves. I'm not really a drummer, but I don't
- play my pads with anything else any more.
-
- The only drawback I can see, is that unless you get the clear ones, or
- one of the dark colors, they look awfully "pop"ish.
-
- Disclaimer: I have no material connection to any of the commercial
- organizations connected to Wam-Rods (tm) (patent pending) other than
- as a happy materialistic consumer.
-
- ps, I like the piss yellow ones best. :-).
-
-
- ---
-
- 4.2.0) [UNIX hardware]
-
- ---
-
- 4.2.1) What are some MIDI interfaces for 386 UNIX boxes?
-
- Answer:
-
- To: nextmusic-list@wri.com
- Date: Sat, 25 Jan 92 10:50:46 EST
- Original-From: blink!tjt (Tim Thompson)
- Subject: re: UNIX/Midi Interfaces
-
-
- > From: Roberto Sierra <73557.2101@compuserve.com>
- > interfaces exist for UNIX machines. Does anyone know
- > if anything is available for Unix on a 386 platform?
-
- MPU-compatible interfaces work fine under UNIX on a 386.
- A UNIX device driver called devmidi is available via FTP
- (on ucsd.edu and louie.udel.edu). There are changes to
- this device driver (also on at least louie.udel.edu)) that
- allow it to work with VP/ix, so you can run DOS MIDI software
- as well.
-
- For software, there is glib, a free generic librarian/editor.
- The glib2 version on louie.udel.edu includes support for the
- devmidi driver. Keynote is a MIDI language and extensible
- graphical editor that runs under the X Window System, and
- works quite well on a 386 platform. It isn't free, but you
- can get complete source code for $200. Send email to
- tjt@blink.att.com for more info on that.
-
- This may not appear relevant to "nextmusic", but when
- NeXTStep becomes available on 386 machines, it may be much
- easier to write MIDI software to run on both a 386 and NeXT.
- Anyone know if the Music Kit will be enhanced on the 386
- to include support for the MPU interface? ...Tim...
-
-
- ---
-
- 4.3.0) [NeXT hardware]
-
- ---
-
- 4.4.0) [IBM PC hardware]
-
- ---
-
- 4.4.1) How do I do MIDI with my laptop PC? What is the Key
- Electronics Midiator?
-
- Answer:
-
- Date: Mon, 17 Aug 92 11:18:24 +0200
- From: ruprecht@corse.informatik.uni-freiburg.de (Nick Ruprecht)
- Organization: Institut fuer Informatik der Universitaet Freiburg
- Address: Rheinstrasse 10-12, D-7800 Freiburg i. Br., Germany
- Phone: +49-761-203 3884, fax: +49-761-203 3889
-
-
- The Key Electronics MIDIator is a good interface for portable
- PCs. warrant mention of the Key Electronics MIDIator under a separate
- topic. I think that the MIDIator 101 will actually do the baud rate
- transformation from 38.4 kBaud to 31.25 kBaud. The MIDIator 101 goes
- for about $US 120. Key Electronics also distributes a sequencer for
- MS-DOS PCs for it. The MS-DOS sequencer Cakewalk supports it as well.
- Key Electronics' address is:
- Key Electronics, 7515 Chapel Avenue, Fort Worth, TX 76116
- Office: (817) 560-1912, FAX: (817) 560-9745
- Toll Free: 1-800-533-MIDI (1-800-533-6434)
-
- ---
-
- 4.4.2) I'm just starting on MIDI and want to know how
- to send MIDI from my SCO UNIX box (and
- who do I buy a card from? Are there
- device drivers available?)
-
- Answer:
-
- From: tjt@blink (Tim Thompson)
- Newsgroups: rec.music.synth
- Subject: Re: MIDI FAQ?
- Date: 28 Dec 91 14:34:29 GMT
-
- Andrew Beattie (tab@ibmpcug.co.uk) writes:
- > I'm just starting on MIDI and want to know how to send MIDI from my SCO UNIX
- > box. (and who do I buy a card from? are there device drivers available?
-
- If SCO UNIX implies you're using an AT-bus 386 of some sort, there
- is a UNIX device driver available called devmidi that can be found in
- the ucsd.edu archive and elsewhere. It supports any MPU-compatible
- MIDI interface. The glib librarian/editor, also found in
- the ucsd.edu archive, can use this driver (email me for the changes).
- The Keynote system (see the NetJam FAQ) can also use this driver.
- There is also a version of devmidi that allows it to be used with VP/IX,
- so you can run DOS MIDI software under UNIX.
-
- For any machine with a standard serial port, you can use the
- Key Electronics (1-800-533-MIDI) MIDIATOR MS-114 interface - it goes
- from standard RS232 to MIDI. There's no buffering, so to avoid input
- lossage you need to run the RS232 at 38.4Kbaud. For MIDI output,
- you can run the RS232 at lower rates and still get usable results.
- For machines that can run their RS232 at the exact MIDI rate, you
- can get by with a cheaper version of the MIDIATOR, I think, the MS-101.
- Keynote also supports the MIDIATOR, although I don't recommend it
- if there are better alternatives (like the MPU).
-
- Semi-related plug: Robin Schaufler is giving a talk at the upcoming
- USENIX, called "Realtime Workstation Performance for MIDI", which
- discusses MIDI on the Silicon Graphics Indigo.
-
- ...Tim Thompson...AT&T Bell Labs/Holmdel/NJ...tjt@blink.att.com...
-
- ---
-
- 4.5.0) [Macintosh hardware]
-
- ---
-
- 4.6.0) [Amiga hardware]
-
- ---
-
- 5.0) [Reference Material]
-
- ---
-
- 5.1) Is an overview of "General MIDI" available?
-
- Answer:
-
- Yes, via ftp as:
-
- anonymous@xcf.berkeley.edu:misc/netjam/doc/midi/general_midi
-
- ---
-
- 5.2) What are the names and address of various gear manufacturers?
-
- Answer:
-
- Rich Kulawiec (rsk@gynko.circ.upenn.edu) posts a monthly list
- of manufacturer contact info to rec.music.makers, rec.music.synth,
- alt.guitar, and news.answers.
-
-
- ---
-
- 5.3) Where may I find an electronic music bibliography?
-
-
- Answer:
-
- See the file:
-
- anonymous@ftp.cs.ruu.nl:MIDI/DOC/bibliography
-
- or
-
- anonymous@131.211.80.17:MIDI/DOC/bibliography
-
- ---
-
- 5.4) How can I build my own MIDI interface for the Macintosh?
-
- Answer:
-
- From: henges@ingr.com. (John Hengesbach)
- Newsgroups: comp.sys.mac,rec.music.synth
- Subject: Re: DIY MIDI interface?
- Keywords: MIDI
- Date: 30 Dec 88 16:05:21 GMT
-
- In article <817@ttrdf.UUCP> fjo@ttrdf.UUCP (Frank Owen ) writes:
- >
- > Has anyone figured out how to kludge up a Do-It-Yourself MIDI interface
- >for the Macintosh? It seems that the one Apple sells has practically no
- A reply...
-
-
- MINIMAL MAC--MIDI INTERFACE
- ===========================
-
-
-
- Well, here it is all you MIDI fans. THE ultimate in
- simplicity!! This is a simple schematic for a serial
- to MIDI converter.
-
- There are two functions performed here. One is the
- conversion from current loop to RS-422. The second function
- is supplying the 1 MHz signal for the serial chip to sync
- up with the 31.5K baud rate of MIDI.
-
-
- >>>>>>> DATA FLOW >>> (MAC TO MIDI INSTRUMENT) >>>>>>>>>
- +-------+ +------+
- To MAC 4 10|26LS32 | |7407 |
- Serial >------+ |11 1| |2 +------+ 5
- Port 5 9| +-----+ +-----+R=220 +-----< \
- DB9 pin >------- | | | +------+ \ (5 pin DIN socket)
- Numbers | | | | | MIDI OUT
- +-------+ +------+ / (to instrument)
- +------+ +------+ 4 /
- +5 volts -+R=390 +--+ +5 volts -+R=220 +-----<
- +------+ | +------+
- +-------+ | +------+1 +------+ 4
- 8 6|26LS31 | | |MCT2 +-----+R=220 +-----< \
- >------+ |11| 5| | +------+ \ (5 pin DIN socket)
- 9 5| +--+--+ | | MIDI IN
- >------- | 4| |2 5 / (from instrument)
- | | +-+ +------------------< /
- +-------+ | +------+
- |
- v
- Ground
- <<<<<<<<<<<<< DATA FLOW << (MIDI INSTRUMENT TO MAC ) <<<
-
- +-------+ +------+
- 7 10|26LS31 | |1 MHZ |
- >------+ |9 8| OSC |
- 3 11| +-----+ |
- >------- | | |
- | | + |
- +-------+ +------+
-
- Power connections:
-
- GROUND +5
- ----- --
- 7407 7 14
- 26LS31 8,12 4,16
- 26LS32 8,12 4,16
- OSCILLATOR 7 14
-
- Notes:
-
- The optical isolator MCT-2 above can probably be any relatively
- fast optical coupler. Note that the 390 ohm resistormay need to be
- adjusted to make sure the output does not saturate. Using a scope
- while feeding a MIDI signal in should show you whether the signal
- looks clean.
-
- The diagram has been drawn to show MAC signals on the left
- and MIDI signals on the right. There have also been allowances made
- for the fact that 80 column ascii displays are not **exactly**
- graphics terminals. Also note that the MAC pin numbers are for the
- DB9 connector **NOT** the 8 pin mini-DIN connector!!
-
- The age old question of where to get power for this always
- remains. On the pre-MAC-PLUSs, there was power available from the
- serial port connector. I solved this problem by finding a 7 VDC
- AC adapter at a parts store and using a 5 volt voltage regulator
- IC to bring it down to 5 volts. This is left as an exercise for
- the student.....
-
- The 26LS31 and 26LS32 are the same type of chips which are
- used in the MAC for RS-42? conversion. I got them from a store in
- Santa Clara California (Anchor Electronics (408) 727-3693). They
- also have 1 Mhz Oscillators as well.
-
- I have built several variations of this over the last two
- years and have had good success using a variety of music software
- with them.
-
-
- John Hengesbach
- (205)772-1669
-
- uunet!ingr!henges
- Intergraph Corporation
- Huntsville, AL 35807
-
- [SEE ALSO: the June 1986 BYTE magazine article on building a MIDI
- board for the IBM PC -- crl]
-
-
- ---
-
- 5.5) Where can I find out all about MIDI?
-
- Answer:
-
- Email LISTSERV@AUVM.AMERICAN.EDU, with the phrase GET MIDISPEC
- PACKAGE in the message body. You will get the following message, as
- well as the files to which it refers.
-
-
- Date: Tue, 26 Nov 1991 18:32:49 -0500
- From: Revised List Processor (1.7a) <LISTSERV@AUVM.AMERICAN.EDU>
- Subject: File: "MIDISPEC $PACKAGE" being sent to you
-
- *************************************************************************
- * *
- * MIDISPEC Package *
- * *
- * The following series of plain text files are the contents of the *
- * MIDISPEC PACKAGE. They are a reference resource compiled from several *
- * sources, mostly by Greg at LEE@UHCCUX. The Primer, originally written *
- * by Bob McQueer, is in constant revision. The other files are subject *
- * to periodic review and update. The package as a whole may be added to *
- * as MIDI expands. *
- * *
- * They have been placed here to make it possible for users to retrieve *
- * or subscribe to the whole set of documents as a "package" so as to *
- * automatically get the updated documentation when it is made *
- * available. Access to the complete package is possible via GET *
- * MIDISPEC PACKAGE. *
- * *
- * You can subscribe to it with: AFD ADD MIDISPEC PACKAGE (note that you *
- * will need to use the PW command to define yourself a password before *
- * you can use the AFD command -- see LISTAFD MEMO for more details). *
- * If you wish to only be informed when the files are updated, use the *
- * FUI ADD MIDISPEC PACKAGE command. *
- * *
- *************************************************************************
- * filename filetype Filelist File description
- * -------- -------- -------- -----------------------
- MIDISPEC $PACKAGE EMUSIC The Package Definition
- MIDI1_0 MIDISPEC EMUSIC The MIDI Version 1.0 Specification
- PRIMER MIDISPEC EMUSIC A MIDI Tutorial
- MIDIBNF MIDISPEC EMUSIC MIDI Considered in Backus-Naur Form
- CTRLTAB MIDISPEC EMUSIC Listing of Controller/Mode Command Codes
- STATTAB MIDISPEC EMUSIC Listing of MIDI Status Codes
- NOTESTAB MIDISPEC EMUSIC Listing of MIDI Notes by Octave
- FILEFMT MIDISPEC EMUSIC Description of MIDI Standard File Format
- SDSFMT MIDISPEC EMUSIC Description of MIDI Sample Dump Standard
- TIMECODE MIDISPEC EMUSIC Description of MIDI Time Code Format
-
-
- ---
-
- 5.6) What are the details behind current sound formats?
-
- Answer:
-
- The Audio Formats Guide is available by anonymous ftp from
- ftp.cwi.nl [192.16.184.180], directory pub, file AudioFormats*.*
- (where *.* is the version number, currently 2.4).
-
- --Guido van Rossum, CWI, Amsterdam <guido@cwi.nl>
- "Shut that bloody bouzouki off!"
-
-
-
- ---
-
-
-
-
- End of the NetJam FAQ.
-
- Xref: bloom-picayune.mit.edu rec.music.info:731 news.answers:4685
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