1/25/97 12:00 AM
Subject: MAX Digest - 23 Jan 1997 to 24 Jan
1997To: Recipients of MAX digests 

There are 6 messages totalling 160 lines in this issue.

Topics of the day:

  1. Tresh/Match objects
  2. News groups about MAX and Opcode products (2)
  4. PowerBooks and MIDI...
  5. DMX-512


Date:    Fri, 24 Jan 1997 16:59:20 +1100
From:    Garth Paine 
Subject: Tresh/Match objects

Tom Mays wrote . . .

>No need to use thresh. 'match 18 19' will output
>the list [18 19] when 18 and 19 are received individually in that order.
>You can simply trigger a bang with that, and voila. By deduction, 'match 19
>for the other direction.

Yes indeed this was my starting point.  However, if you consider the series;
18 19 18 19 18 19 18 19 etc
There is both a patern if 18 19 and of 19 18.  So I started by setting up
two match object, one containing 18 19 which was connected to a +1 object
and onother containing 19 18 which was connected to a -1 object.  The total
of this opperation was always zero.

I have tried other options such as the Past object which resets when 18
appears after 19 and triggers on the receit of 19 following 18.  This works
great for the sequence 18 19 and does not get confused by the progression
19 18.  So I can use this to count the people comming into my installation
space, but I still have a problem counting the people leaving the space.  I
don't want  to introduce a third trigger as I need the others within the

The reson I was trying the Thresh object was that I thought there would
always be a delay between people entering and people leaving - They have to
use the same doorway.  So I thought I'd use the Tresh object but it puts
out a bang when only recieving one of the two numbers in the argument
within its time period.  This is problamatic in my application, so no go.
I have even tried using a gate at the input to two Thresh objects to avoid
the accidental trigger, ie 18 18 but that can be ofset by three accidental
triggers ie 18 18 18 which throws the whole thing out.

So any suggestions about how to count incomming people and outgoing people
with the use of two triggers would be greatly appreciated.

Thanks for your suggestions and input,


MUSIC COMPOSITION, SOUND DESIGN for Theatre, Film, Video, Multimedia
Phone   +61 3 95259844     mobile-0412-118292
Fax        +61 3 95275549


Date:    Fri, 24 Jan 1997 22:36:15 +0900
From:    Anne Mirrase 
Subject: News groups about MAX and Opcode products

Dear Maxers!

Does anyone know any news groups where is disscussing about the Max or
Opcode products?

Anne Mirrase


Date:    Fri, 24 Jan 1997 16:19:00 EST
From:    Greg Kuhn <0003939581@MCIMAIL.COM>
Subject: Re: News groups about MAX and Opcode products


for faqs,forms,support, and support/opcode-users.html


Date:    Fri, 24 Jan 1997 22:19:37 +0100
From:    Luigi Rensinghoff 

Hi there !

i am absolutely new here and i do not know if  MAX is really what i need.
I hope that someone can help me.
What i am mainly interested in, is doing surround/ambisonic
sound-production and reproduction.
I found a description of "LE spatialisateur" on the IRCAM Page and it may
be what i need.

So here some questions:
Has someone worked with the "Spatialisateur" and maybe can tell me what it
is all about?
What about MAX: Is it mainly for managing MIDI-commands or is it possible
to play different real
audio tracks (multitrack) ? How many?

I would like to bring MAX together with a ProTools System and maybe
interchnage MIDI-signals.
Has somebody done this before? Does it work ?

OK so far



Date:    Fri, 24 Jan 1997 21:12:02 -0500
From:    "Joseph W. Rovan" <105561.3371@COMPUSERVE.COM>
Subject: PowerBooks and MIDI...

Regarding Peter Elsea's recent question about losing MIDI data with the
PowerBook 1400:  Definitely upgrade to the latest version of OMS. Although
I left Opcode last December (and I finally made it to Paris!), while I was
there I was the OMS Product Manager and thus had to deal with all these
kinds of problems. Newer versions of OMS feature important workarounds for
the PowerBook serial ports.

In parallel with the work Doug Wyatt did on OMS, we went to Apple and
conducted extensive tests on the hardware configurations of many Mac models
and their serial ports, testing their compatibility with MIDI interfaces.
Almost every Mac model seemed to have a different spec for the serial port,
and we came to suspect that it was possibly due to filtering circuitry
(caps, ferrite beads, etc.) tacked onto the serial lines to help the units
pass emmissions testing for FCC and CE (European) approval.

The end result of the tests was that we found PowerBooks to be the most
problematic from the hardware standpoint (voltage level/offset of the
serial ports). The newer PowerBooks seem to be right on the verge of being
able to reliably power a self-powered interface like a Translator. With the
tolerance of the components inside the Translator as the only variable, we
found some Translators worked better than others, even though they were
theoretically identical. When I left, we had a policy whereby PowerBook
owners could swap out a Translator for one specifically tested for
PowerBooks (Better check with Opcode--Renan Sanchez is the tech person to
talk to there). As far as powered interfaces go, some of the older ones
like the Studio 3 don't work with PowerBooks, although we came up with a
mod for the Studio 3 which is really simple. The newer powered interfaces
should work fine.

Hope all this helps--

Butch Rovan


Date:    Fri, 24 Jan 1997 21:15:14 -0500
From:    "Joseph W. Rovan" <105561.3371@COMPUSERVE.COM>
Subject: DMX-512

A quick question: I've seen this come up a few times recently--what is a
"LanBox-LC II" MIDI to DMX-512 convertor? (Specifically, what kind of
hardware does DMX-512 speak to?)

Butch Rovan


End of MAX Digest - 23 Jan 1997 to 24 Jan 1997