Ultrasound Daily Digest     Wed Jun  2 00:33     Volume 4: Issue   2  

Today's Topics:
					  44.1 vs 48 KHz sample rate
						   7th Guest w/GUS
					GUS and Scanner SCSI Conflict?
						 GUS in South Africa
						 Sierra and your GUS
				   Ultrasound Daily Digest V3 #59 

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.

----------------------------------------------------------------------

Date: Tue, 1 Jun 93 12:08:28 EDT
From: cognex!sol_azteca!bobt@ai.mit.edu (Bob Tillman)
Subject: 44.1 vs 48 KHz sample rate
Message-ID: <9306011608.AA15117@sol_azteca.cognex.com>

Here is my understanding of this mess:

Digital audio systems require an anti-aliasing low-pass filter to cut off
the artifacts of sampling.  With a 44.1k sample rate, this filter has to
have a much sharper cutoff than with a 48k sample rate.  If done in the
analog domain, sharper filters tend to have phase problems near the cutoff
frequency.  I believe that this is probably the major reason why 48k is
preferred to 44.1 for professional recordings.  (You all are invited to tell
me why I'm wrong... :)

In the past few years, over-sampled D/A and A/D have lessened the need for
this because the sharp filter can be implemented in the digital domain,
where it can be made to have much better phase behavior near the cutoff.

According to the digital signals class I took lo those many years ago:
assuming the "ideal" anti-aliasing filter, as long as the sampling frequency
is more than twice the highest signal frequency of interest, no information
will be lost in the A/D/A conversion.  Now if we could only order a few of
those "ideal" filters...

cheers,
Bob Tillman
cognex!bobt@ai.mit.edu

------------------------------

Date: Tue, 1 Jun 93 22:08 GMT0BST-1
From: Paul Kokis <scratcher@cix.compulink.co.uk>
Subject: 7th Guest w/GUS
Message-ID: <memo.279681@cix.compulink.co.uk>

I'm using SBOS v1.20, but should be receiving some more recent versions
on floppy from a fellow GUSer soon. My graphics card is a Tseng ET4000
chipset one - I've also run t7g on a Boca (Cirrus chipset): makes _no_
difference to my sound probs. As far as t7g ratings go, I installed it
while using the Boca, which was c58%. I haven't retried since changing to
the Tseng, but as I still have the sound prob I guess it's not that! I
eagerly await the availability of the GUS Miles drivers - perhaps they'd
help! 
Regards,
		Paul (Scratch)

------------------------------

Date: Tue, 1 Jun 1993 15:56:56 -0500 (EDT)
From: treason@gnu.ai.mit.edu
Subject: GUS and Scanner SCSI Conflict?
Message-ID: <9306011956.AA29139@hal.gnu.ai.mit.edu>

I just purchased a Scanmaker 2 from microtek and have a terrible time trying
to set the thing up!  The tech support line held me for 20 minutes and THEN
asked me to leave a message(buttwhads!)  None the less I am seeting the scanner
SCSI card to address d400-d800.  Does the GUS use this set of addresses in any
way?  I need to get this configured so my wife can freelance graphic design.
My other hardware considerations are a trident 8900, a GUS(220, irq7), IDE/io,
and a cheasy 2400 bps internal modem.  I am currently using a 386/25 with
a quantum 80 meg hd.  Any suggestions?

treason@gnu 

------------------------------

Date: Tue, 1 Jun 93 09:17:29 +0200
From: rogan@concave.cs.wits.ac.za (Rogan Alan Hastings Dawes)
Subject: GUS in South Africa
Message-ID: <9306010717.AA02349@concave.cs.wits.ac.za>

My thanks to all the folks who posted and mailed to suggest ways of getting
hold of a GUS here in South Africa. For the rest of us South Africans who
also want to know what the results were, here follows a brief synopsis.

The general consensus seemed to be that I should get a local company to do
the importing for me. It doesn't turn out to be all that expensive, and that
way, if there is a problem with the card, they carry the can :-)

Michael Patricios (electrical engineering here at Wits) ordered his GUS from
the Software Connection in Eastgate, and paid R600-00 for it.
Another friend of mine got his from the Software Connection for R900-00,
(Pretoria branch), but that seemed to have extras ( I'm not quite sure what)

If there isn't a Software Connection near you, try your local dealer, you 
might be able to work something out. Apparently, Software Connection has
 the best turnaround time, but I'm open to correction.

Thanks again to all who wrote . . .


Rogan Dawes    -    University of the Witwatersrand, South Africa

rogan@concave.cs.wits.ac.za

------------------------------

Date: Wed, 2 Jun 93 10:21:44 EST
From: adrianr@ecr.mu.oz.au (Adriano_Ennio RAIOLA)
Subject: Sierra and your GUS
Message-ID: <9306020021.14349@ecr.mu.oz.au>

Guys, I know this was mentioned a while ago briefly by somebody, but for the
benefit of those that have either forgotten, didnt read it, or are new to the
list, ill tell you, Sierra sounds GREAT with your GUS!

You take any of the very new Sierra releases, such as Eco Quest II, and (the
one I have tried) Freddy Pharkas Frontier Pharmacist. They all are fully 
Windows executable, inside a window, and what does that mean? Multimedia
Extensions! Simply switch to conserve memory for patches, load up load1024.mid
with patchmanager (if you have 1 meg that is), and make sure when you setup
the Sierra game you choose 'Extended Level MIDI' , and I gotta tell you the
game sounds UNREAL! Full midi music, topped off with all the digitised sound
effects!

Only one little problem with it, as you might expect, the volume levels of
the music in general is a little weak, GRAVIS PLEASE release new drivers
for the GUS in windows that take care of the volume mapping problem, its
bad enough having to vmap every mid we play, but for these multimedia games
it is CRUCIAL!!! 

Still if GMOS is this good, then I cant wait! But to the people working on GMOS,
is it really a case of when, and not if? Will it for sure see the light of day? 

adrian
(World Circuit patch? WHAT World Circuit patch?)

-- 
| adrianr@ecr.mu.oz.au --------| Adrian -aka- Plugger | *  * *  *   *  |  _/_\
| adrianr@mullian.ee.mu.oz.au -| What time is love?   | *_*  * *_  *_  | / OZ |
| adrianr@mundil.cs.mu.oz.au --| I think its gonna be | * *  *   *   * | \__-_/
| -- I want more accounts! ----| long, long time.     | *  * *  *   *  |     v

------------------------------

Date: Tue, 01 Jun 1993 09:39:12 -0400
From: Bill Norton <wbn@merit.edu>
Subject: Re: Ultrasound Daily Digest V3 #59 
Message-ID: <9306011339.AA02729@merit.edu>

Does anyone know of any other voice recognition software besides the
in3demo available in the public domain.  I'm looking for something like
Microsoft's voice pilot.  In3cube is pretty good, but statically defines
the commands you can execute, and the real version costs $180!  

Plus, I've noticed many times when the program interprets speech, music, mouse
clicks as commands.  Perhaps this is because I have a cheap microphone,
and I really need a headset microphone to avoid noise being interpreted
as commands.

Bill

------------------------------

Date: Mar, 01 Jui 93 16:30:23 FRA
From: 9269Z%FRESTP11.BITNET@FRMOP11.CNUSC.FR
Message-ID: <9306011525.AA12057@orca.es.com>

Date: 01 Juin 1993, 16:26:46 FRA
From: Benjamin Ryzman           44.41.11.02          9269Z    at FRESTP11
To:   ultrasound@dsd.es.com

What's happening with the long awaited patch for F1GP ? Is it available ?
What about any software supporting the GUS ? The only one I know (besides
demos and trackers) are Zone66 and Race into Space... Are there any other ?
What about the game coded by Future Crew which was announced to support the
GUS ?

Any news ? I am worried about GUS software, though the Miles Driver are
a great announcement...

Regards,
+---------------------+-------------------------------------------------+
|   Benjamin RYZMAN   |  "...And now, something completly different |"  |
| ESTP, Paris, France |             -Monty Python                       |
|       Email:        |   "640 kb should be sufficient for anyone..."   |
|9269Z@FRESTP11.BITNET|        -Bill "goofy" Gates, circa 1981 AD       |
+---------------------+-------------------------------------------------+

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End of Ultrasound Daily Digest V4 #2
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