home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Experimental BBS Explossion 3
/
Experimental BBS Explossion III.iso
/
gus
/
sdkdigv9.zip
/
SDKV9N12.TXT
< prev
next >
Wrap
Text File
|
1994-02-21
|
4KB
|
95 lines
Apparently-To: john.smith@gravis.com
GUS Programmer's Digest Mon, 21 Feb 94 4:26 Volume 9: Issue 12
Today's Topics:
GUS D/A converter
GUS Programmer's Digest V9 #11
Pitch...
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: 21 Feb 94 11:03:00 MET
From: "VISX80::GRECNER" <GRECNER%VISX80.decnet@musx53.zfe.siemens.de>
Subject: GUS D/A converter
Does anyone know how many bits does GUS's A/D converter use ?
For the full 32 16-bit voices it needs 21 bits in fact. Since it's
only 14 voices in the best quality, it still needs at least 20 bits.
I know that in proffesional devices (synths) they normally use
24-bit internal signal processing and 18-bit output A/D converters.
So, how is it with GUS ? Does it utilize 16 bit ADC only ? How is
then polyphonie implemented ? I'm asking because i find my new GUS
not dynamic enough (when compared to Ensoniq EPS-16 +, for example,
which is a proffesional 16 bit sampler with 20 voices ).
Thanks for comments.
Martin Grecner
------------------------------
Date: Mon, 21 Feb 1994 04:15:58 -0700 (MST)
From: "Shawn T. Rutledge" <rutledge@enuxsa.eas.asu.edu>
Subject: Re: GUS Programmer's Digest V9 #11
> Well, the formula, as I understand it, is:
>
> freq+halfstep = freq * 2^(1/12) or halfstep=e^(1/12 * ln(2))
>
> But I think you are wrong about A being 400 Hz. By the above formula:
>
> This puts C at 237.842Hz. I was always under the impression that A was
> 440Hz. Using the above formula, that makes:
Quite right. Brain fart I guess. Thanks for the formula though! I don't think
I'd seen it before.
--
_______ KB7PWD
(_ | |_) shawn.rutledge@asu.edu
__) | | \__________________________________________________________________
* packet * sci fi * freedom of information * IEEE * cyberspace * anti-Macintosh *
------------------------------
Date: Sun, 20 Feb 1994 17:36:17 +0800 (PST)
From: Francis Li <fli@nermal.santarosa.edu>
Subject: Pitch...
Thank you to all who responded about my inquiry of sample frequency and
pitch...
------------------------------
End of GUS Programmer's Digest V9 #12
*************************************
To post to tomorrow's digest: <gus-sdk@dsd.es.com>
To (un)subscribe or get help: <gus-sdk-request@dsd.es.com>
To contact a human (last resort): <gus-sdk-owner@dsd.es.com>
FTP Sites Archive Directories
--------- ------- -----------
Main N.American Site: archive.orst.edu pub/packages/gravis
wuarchive.wustl.edu systems/ibmpc/ultrasound
Main Asian Site: nctuccca.edu.tw PC/ultrasound
European Callers ONLY: theoris.rz.uni-konstanz.de pub/sound/gus
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
MailServer For Archive Access: Email to <mail-server@nike.rz.uni-konstanz.de>
Hints:
- Get the FAQ from the FTP sites or the request server.
- Mail to <gus-sdk-request@dsd.es.com> for info about other GUS
related mailing lists (general use, musician's, etc.).