home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Intermedia 1998 January
/
inter1_98.iso
/
dzwiek
/
dvdsp100
/
readme.txt
< prev
next >
Wrap
Text File
|
1997-05-07
|
14KB
|
415 lines
========================
Digital Vision DSP-100
Version 1.0r
for Microsoft Windows 95
========================
1997
Damjan Vavpotic
email: damjan.vavpotic@kiss.uni-lj.si
INDEX
-----
A. What is it?
B. What is it not?
C. Requirements
D. Features of this version
E. History
F. Installation
G. Usage
H. Troubleshooter
I. License
J. About author
K. Disclaimer
A. WHAT IS IT?
--------------
- It is a REALTIME software "digital sound processor".
- It can produce REALTIME echo effects.
- You can use it on any outside source: CD-player, Line input, MIDI,
Microphone,...
- You can set the delay and repetition of echo.
- You can aditionaly amplify source.
- In short: It makes your computer act like an expensive HIFI DSP component.
B. WHAT IS IT NOT?
------------------
- You can't use it to add echo effect to sounds played by computer
(e.g. wave files).
- It is not a sound editor (e.g. Cool Edit).
- It is not a realtime equelizer (at least not in this version).
- It doesn't contain sound surround system (at least not in this version).
C. REQUIREMENTS
---------------
- Windows 95 (might work on NT also, but not tested)
- Sound card:
a) one STEREO, 16-BIT sound card capable of wave recording and wave
playing at same time and at same frequency, MUST support FULL DUPLEX
(e.g. SB16, SB32, AWE32,AWE64,...). Get new full duplex drivers from
your sound card manufacturer's web-site.
OR
b) two STEREO, 16-BIT sound cards capable of wave recording and wave
playing at same frequency rate (never tested, but should work)
- at least 80486DX4 (Cyrix 6x86 or Pentium recommended)
- 16 MB RAM recommended (tested on 16MB and 32MB)
- Sound source:
a) CD-ROM capable of playing music CDs connected to sound card
OR
b) HIFI device connected to sound card input channel(LineIn)
OR
c) FM modulator/wave table on sound card (for playing MIDI files with
echo)
OR
d) Microphone connected to sound card.
D. FEATURES OF THIS VERSION
---------------------------
- frequency rates up to 22kHz
- stereo sound
- 10 repeats max
- fade out for repeats
- up to 1250 ms delay with 22 kHz (1 repeat)
- up to 3375 ms delay with 8 kHz (1 repeat)
- maximum custom buffer size 220000 bytes
- sound source can be amplified up to 50x
- SysTray icon
- predefined "sound spaces"
E. HISTORY
----------
> 1994, "noname"
- small program for DOS that produced echo (made on 486-66)
- only worked with SoundBlaster 16
- sample rate: only 11kHz
- only one repeat
- poor sound quality
- never released in public
> 1995, Sb16Echo
- for windows 3.1
- very unstable
- never really worked
- never released in public
> 1996, Sb16Echo32
- for windows 95
- poor sound quality
- not really usefull
- never released in public
> february 1997, Sb16Echo2
- for windows 95
- echo generation engine completly rewritten
- first version that supported stereo sound
- only one repeat
- frequency rates up to 44kHz
- never released in public
> april 1997, renamed to Digital Vision DSP-80 v0.8b
- for windows 95
- new user interface
- added repeat setting
- added setup menu
- added support for more sound cards
- added setting for different frequencies
- added buffer setting
- never released in public
> april 1997, Digital Vision DSP-90 v0.9b
- for windows 95
- added support for SysTray
- added volume setting
- added "clip" in echo engine
- up to 10 repeats possible
- never released in public
> may 1997, Digital Vision DSP-100 v1.0b
- preset "sound spaces" added
- better SysTray support
- frequency rates up to 48kHz
- excellent sound quality
- added thread support for echo engine
- detects full duplex cards
- added tips (help)
- few bugs fixed
> may 1997, Digital Vision DSP-100 v1.0r (release version)
- maximum frequency rate reduced to 22kHz (compatibility issue)
- maximum custom buffer size reduced to 220000 bytes
- FIRST RELEASE VERSION
F. INSTALLATION
---------------
Just copy the program file DVDSP100.EXE to desired location!
Optionally you can add the shortcut in start menu. You might also want
to put the shortcut in StartUp folder.
IMPORTANT!!!
If you only have one sound card you MUST get FULL DUPLEX device drivers.
You can get full duplex drivers for SoundBlaster on Creative Labs web site:
http://creaf.com
G. USAGE
--------
> Before you can use the program for the first time you must follow few
steps:
- Step 1: Choose the sound source. Usually you will choose between
CD-ROM or HIFI device connected to LineIn. Connect the sound
source to sound card if needed (e.g. connect a tuner to the
sound card).
- Step 2: Start Windows 95 mixer (SNDVOL32.EXE). In playback mode set
all sources to MUTE except for Volume control and Wave. Adjust
the Volume control and wave to the right value (so that you can
hear system sounds).
- Step 3: In Windows 95 mixer go to record mode and SELECT the sound
source that you are using (e.g. CD Audio for CD-ROM or LineIn
for external device - tuner, tape,..). You should also adjust
the volume of the selected source to the right value. If you
set it too loud sound quality will be poor, if your setting is
too silent you wont hear anything!
- Step 4: Start Digital Vision DSP-100 and press Advanced. The window
will become larger and you will be able to choose additional
options and menus. Go to Setup menu and select the sound
card(s) you want to use. (if you have only one it
MUST SUPPORT FULL DUPLEX). Also choose a desired frequency.
If your computer is slow you should choose lower frequencies.
- Step 5: Now switch back to Echo generator menu. Leave advanced button
pressed, so that you can see aditional optios.
- Step 6: Turn on the sound source (e.g. play the CD in CD-ROM, turn
on the tuner,...)
- Step 7: Press power button. Now you should see "Produce" led blinking.
If it stays red all the time the CPU is overloaded (you should
reduce frequency rate or set repeats to smaller value). There
should always be at least a short white interval.
After few seconds (depends on settings, might be 1 to 10 sec)
you should hear sound. First you will hear weird echo effect
and then the DSP-100 should begin to produce real echo.
> Buttons:
- SysTray menu:
"Show"
Shows DSP-100 control panel.
"Exit"
Exits the program. Before you exit you should switch the "Power"
button to off.
- Main menu:
"Power" button:
With this button you start DSP-100. It begins to record the sound
from sound source and play it directly to wave device. If "Echo
active" checkbox in "Echo generator" is checked it also begins to
produce echo effect. You have to wait for a few seconds before you
can hear a sound.
"Power" led:
Turns to green when the DSP-100 is switched on.
"Advanced" button
Shows additional settings.
"Hide" button
Hides the DSP-100 control panel.
"Sound spaces" choosebox
Allows user to select different "sound spaces". You have to wait
for a few seconds before you can hear the difference.
- Echo generator menu:
"Produce" led:
It goes red when echo is beeing produced. If it stays red all the
time the CPU is overloaded (you should reduce frequency rate or
set repeats to smaller value). There should always be at least a
short white interval.
"Echo active" checkbox:
It activates/deactivates echo generator. If you deactivate the
generator, DSP-100 will still record and play sound but you won't
hear any echo.
"Volume" trackbar:
With this setting you can amplify the sound playback
"Delay" trackbar:
With this setting you can set the delay of the echo. Maximum
setting depends on the available memory buffers.
"Repeats" trackbar:
With this setting you can change the number of repeats of echo.
CPU load rises with number of repeats.
- Setup menu:
"In" choosebox:
Allowes you to choose another input sound card.
"Out" choosebox:
Allowes you to choose another output sound card.
"Freq" choosebox:
Here you can set the sampling and playing frequency. Sampling and
playing frequency can not be different.
"Buffer multiplier" choosebox:
Here you set buffer size. If buffer is big the response will be
slower (you will have to wait longer before you can hear sound),
but you will be able to select longer delay.
"Max buffer size" label:
Maximum buffer size that can be set.
"Custom buffer size" label:
Buffer size that is set with "Buffer multiplier" choosebox.
- Debug info menu:
Should only be used by advanced users.
Additional information which can be used when you are selecting
sound card...
> IMPORTANT!
This is realtime program and it uses most of CPU processing time. You
should switch it OFF before loading a program or doing any other long
operations with disk, CD-ROM, floppy,... You shoul also switch it off
when using MS-DOS window. Otherwise the echo won't be produced correctly
at that time and program might even freeze.
H. TROUBLESHOOTER
-----------------
* PROBLEM: You get the message: "Only ONE waveIn/waveOut device and it is
NOT capable of FULL DUPLEX..."
CAUSE: You have only one sound card that does not support full duplex
SOLUTION: Install full duplex drivers for your sound card or get another
sound card.
* PROBLEM: You get the message: "More waveIn/waveOut devices, NONE is
capable of FULL DUPLEX..."
CAUSE: You have more one sound cards, but none supports full duplex
SOLUTION: Select different sound card for input and different sound card
for output in setup menu or install full duplex drivers.
* PROBLEM: "Power" button is on, echo is enabled, but "Produce" led stays
white all the time and you can't hear anything.
CAUSE: Your card is not set correctly (probably wrong frequency, doesn't
support stereo, doesn't support 16-bit sampling).
SOLUTION: Try to configure card correctly in setup menu. If the sound card
does not support stereo or 16-bit then you can't use this
program.
* PROBLEM: "Power" button is on, echo is enabled, "Produce" led blinks, but
you can't hear anything.
CAUSE: Windows 95 mixer is not configured correctly.
SOLUTION: Read chapter G, step 2 and step 3.
* PROBLEM: "Power" button is on, echo is enabled, "Produce" led blinks, you
can hear sound, but quality is poor.
CAUSE: Windows 95 mixer is not configured correctly. Probably recording
volume of selected source is set to loud.
SOLUTION: Read chapter G, step 2 and step 3 and reduce recording volume.
* PROBLEM: You pressed "Power", everything looked OK, but you couldn't hear
anything, so you closed the aplication...
CAUSE: DSP-100 needs a few secondes before it begins to play the sound.
SOLUTION: Don't be so impatient, you have wait for a few seconds before
you can hear anything (1 to 10 sec, depends on configuration).
* PROBLEM: The echo effects are wierd while you're using disk.
CAUSE: Read chapter G, IMPORTANT
SOLUTION: Read chapter G, IMPORTANT
I. LICENSE
----------
This version of program is postcardware. That means you should send me a
postcard if you liked this software, so I will know that you are using it.
If I will get enough postcards I might release new, better version. My
S-Mail address is in chapter I.
J. ABOUT AUTHOR
---------------
S-Mail:
Damjan Vavpotic
Neubergerjeva ulica 3
1000 Ljubljana
Slovenija
Europe
E-Mail:
damjan.vavpotic@kiss.uni-lj.si
damjan.vavpotic@usa.net
K. DISCLAIMER
-------------
Digital Vision DSP-100 is supplied as is. There are NO warranties. The
author assumes no liability for damages, direct or consequential, which may
result from the use of Digital Vision DSP-100.
Products mentioned in this file are mentioned for indentification purposes
only. Product names appearing in this file may or may not be registred
trademarks or copyrights of their respective companies.