home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Grand Slam 3
/
Grand Slam 3.iso
/
026
/
v19n5p.arj
/
V19N5P.TXT
< prev
Wrap
Text File
|
1995-05-12
|
7KB
|
176 lines
The GUS Programmer's Digest Friday, 12 May 1995 Volume 19 : Number 005
Today's Topics:
Where'd SDK v2.22 go??
Constant DC offset
RE: Software v.4.11
RE: Constant DC offset
Standard Info:
- Meta-info about the GUS can be found at the end of the Digest.
- Before you ask a question, please READ THE FAQ.
----------------------------------------------------------------------
From: Lance Kalzus <kqy5125@is.NYU.EDU>
Date: Thu, 11 May 1995 11:25:02 -0400 (EDT)
Subject: Where'd SDK v2.22 go??
Does anyone read this list?/
No ;) Does anyone know where the SDKs have all gone? I've checked both
orst and epas, and the path which should contain the SDK files (among
many other things) doesn't.
"Suspicious-looking stranger flashes you a dangerous grin
Shadows at your window -- Was it only trees in the wind?
"Every breath a static charge -- A tongue that tastes like tin
Steely-eyed outside -- To hide the enemy within..."
-- Rush, The Enemy Within
------------------------------
From: Ricky.Houghton@cs.cmu.edu
Date: Thu, 11 May 1995 16:18:44 -0400 (EDT)
Subject: Constant DC offset
Apparently it is a problem with the 4231. The Anlog devices chipsets,
1848 and 1849 had the same problem. I switch to the GUS-MAX card
because I was told that the 4231 did not have this problem. This is very
disappointing as we are trying to do simulatenous play/record via the
codec and do frequency analysis as quickly as possible. Filtering the
data as well really sucks. And to complicate matters, we really want to
stereo record on a simultaneous played sound.
Ricky.Houghton@cs.cmu.edu
------------------------------
From: Chris James <JAMESC@mail.medoto.unimelb.edu.au>
Date: Fri, 12 May 1995 11:35:00 -0700 (PDT)
Subject: RE: Software v.4.11
Just a note about installing v4.11. Most people seem to be under the
impression that its just window's drivers. I'm fairly sure that it installed
MAXSBOS too (over the original). Also, I've noticed the occasional burp
with my GUS max (only on stereo files) in Windows (just like the old days).
I don't remember this being the case with the previous version 3.59.
Anyone else noticed this. BTW I've a GUS MAX.
Chris
P.S. I just have to say that the install programs that Gravis are using
now are tops (If a little ugly, i.e. sim-windows). I had a nightmare
installing a Pro 3D this morning, Media Vision could learn a thing ot two...
(BTW I don't use a 3D at home of
course!)
------------------------------
From: Chris James <JAMESC@mail.medoto.unimelb.edu.au>
Date: Fri, 12 May 1995 12:00:00 -0700 (PDT)
Subject: RE: Constant DC offset
>Apparently it is a problem with the 4231. The Anlog devices chipsets,
>1848 and 1849 had the same problem. I switch to the GUS-MAX card
>because I was told that the 4231 did not have this problem. This is very
>disappointing as we are trying to do simulatenous play/record via the
>codec and do frequency analysis as quickly as possible. Filtering the
>data as well really sucks. And to complicate matters, we really want to
>stereo record on a simultaneous played sound.
I'm now not sure that the DC is entirely internal (although its hard to
figure
how it couldn't be since its post recording multiplexer). I recorded some
signals from the GF1 playing midi in windows, no offset! This doesn't make
sense!
Presumably all the inputs are decoupled properly to the CS codec (this is
how it
seems when no post multiplexer record gain is applied at least on my
system), i.e.
no offset. Do you always have a noticeable offset?
I vaguely remember at some time noticing an offset drift. That is the signal
would
work down to null offset so I saw a smooth "decay". This was when I was
writing
a driver using the SDK. Its possible that it is "autocalibrating" but that
the SDK
(were the windows drivers built with this?) code doesn't wait for long
enough
(the specs mention 160 ms). I still think the final solution is to enable
the codec's
built in digital HP filters which are design to deal with this problem. If
ULTRINIT
and the SDK code etc don't explicitly poke this register maybe we can write
a quick init program to enable this function? Maybe we should talk to
Crystal Semi?
I'll try doing a Web search for an email contact (phone calls to US are
expensive from here).
Chris James
------------------------------
End of The GUS Programmer's Digest V19 #5
*****************************************
To post to tomorrow's digest: <gus-sdk@mail.orst.edu>
To (un)subscribe or get help: <gus-sdk-digest-request@mail.orst.edu>
To contact a human (last resort): <gus-sdk-digest-owner@mail.orst.edu>
FTP Sites Archive Directories
--------- -------------------
Main N.American Site: ftp.orst.edu pub/packages/gravis
wuarchive.wustl.edu systems/ibmpc/ultrasound
Main Asian Site: nctuccca.edu.tw PC/ultrasound
Main European Site: src.doc.ic.ac.uk packages/ultrasound
Main Australian Site: ftp.mpx.com.au /ultrasound/general
/ultrasound/submit
South African Site: ftp.sun.ac.za /pub/packages/ultrasound
Submissions: archive.epas.utoronto.ca pub/pc/ultrasound/submit
Newly Validated Files: archive.epas.utoronto.ca pub/pc/ultrasound
Mirrors: garbo.uwasa.fi mirror/ultrasound
ftp.st.nepean.uws.edu.au pc/ultrasound
ftp.luth.se pub/msdos/ultrasound
Gopher Sites Menu directory
------------ --------------
Main Site: src.doc.ic.ac.uk packages/ultrasound
WWW Pages
---------
Main Site: http://www.xmission.com/~grue/gus.html
Main European Site: http://src.doc.ic.ac.uk/packages/ultrasound/
Main Australian Site: http://ftp.mpx.com.au/archive/ultrasound/general/
http://ftp.mpx.com.au/archive/ultrasound/submit/
http://ftp.mpx.com.au/gravis.html
Mirrors: http://www.st.nepean.uws.edu.au/pub/pc/ultrasound/
GUS digest: http://gpu.srv.ualberta.ca/~itam/digest.html
MailServer For Archive Access: Email to <mail-server@nike.rz.uni-konstanz.de>
Email to <ftpmail@doc.ic.ac.uk>
New Submit Files Mailing List: Email to <listproc@uni-konstanz.de>
with content "subscribe epas-list <your-name-here>"
Hints:
- Get the FAQ from the FTP sites or the request server.
- Mail to <gus-sdk-digest-request@mail.orst.edu> for info about other
GUS related mailing lists (general use, musician's, etc.).