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1991-10-06
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______/\ /\____________________
\ /\ /
\/ \/ A V E F O R M 1 . 0
WAVEFORM 1.0
Written by : Mark R. Johnson
Produced by: City Zoo, Inc.
Waveform is a demonstration waveform editor written to make use
of the Sound Blaster utility programs VPLAY and VREC. With Waveform and
these other two utiliies, one can digitize, play, view, and manipulate
sound waveforms. Even without a Sound Blaster or the utilities, one can
edit sound files. Version 1.0 has many of the more advanced functions
turned off. These functions are available in version 1.1 of the program.
See Registration below. Waveform 1.0 and 1.1 are NOT in the Public Domain.
Version 1.0 can, however, be freely distributed in an unmodified form as
long as this documentation file remains with Waveform. Version 1.1, however,
may NOT be freely distributed.
REQUIREMENTS:
------------
Sound Blaster Card
Sound Blaster Utilities VPLAY.EXE and VREC.EXE
640KB RAM Memory
CGA, EGA, VGA, or Hercules Video
Microsoft or Compatible Mouse (optional)
REGISTRATION:
------------
Waveform 1.0 is a demonstration program. A registration fee of
$50 (US) will entitle you to a copy of Waveform 1.1, which makes use of
the following options that are turned off in version 1.0:
Add Waveforms: Averages together two waveforms - the clipboard
and the current waveform.
Create Echo: Allows the user to select a section of a waveform
and create an echo from it.
Resample Waveform: Resamples a waveform to a different rate such
that the result sounds approximately the same
at a different sample rate.
Volume Flange: Allows the user to change the volume of sections
of a waveform, either sweeping louder or softer,
or simply amplifying equally across the selected
section.
To register, send $50 (US) check or money order to:
Mark R. Johnson
#33791 Georgia Tech Station
Atlanta, GA 30332
For comments or suggestions, contact Mark at the e-mail address:
gt3791a@prism.gatech.edu
FUTURE VERSIONS:
---------------
Future version of Waveform will include:
* More functions for manipulating sound waveforms
* Extensive support for Creative Voice File headers and data packing
* Access to larger sample sizes (greater than 65,000 data points) and
extended or expanded memory.
* Direct access to the Sound Blaster Card's capabilities including
playing and recording of sound files.
USAGE OF WAVEFORM:
-----------------
Waveform is a graphical menu-driven waveform editor that gives
the user the ability to manipulate sound waveforms. In most functions,
operation is more or less intuitive. The mouse or keyboard is used to
highlight sections of the current waveform through the use of the two
drag bars. There are, however, a few unique qualities that need to be
explained:
(1) Waveform makes use of the Sound Blaster utilities VPLAY.EXE and
VREC.EXE to play and record the sound files. To find these files,
Waveform searches for the SOUND environment variable. This variable
should in the AUTOEXEC.BAT file be set to the Sound Blaster
subdirectory. The program actually looks into the VOXKIT\ subdirectory
of the Sound Blaster subdirectory. For example, if the main Sound
Blaster files are in the directory C:\SB and the files VPLAY.EXE and
VREC.EXE are in the directory C:\SB\UTILITY then there should be a
statement in the AUTOEXEC.BAT file as follows:
SET SOUND = C:\SB
This will allow Waveform to find the files it needs in C:\SB\VOXKIT.
(2) A section can be highlight before or after the function to be
performed has been selected. However, if a section is highlighted
with the selection bars and PLAY is selected, only that section
that is highlighted will be played. The selection bars can be
removed by simply hitting ESC.
(3) In the EDIT sub-menu, there is an option called SELECT. This allows
the user to use the KEYBOARD to select a section of the waveform to
either play or perform one of the functions. This option need not
be selected to use the mouse to highlight a region. To use the mouse,
just point, click, and drag.
(4) Waveform does not yet fully support the Creative File Voice files.
Among the options not supported are data packing, repeat loops, and
markers. However, many of these files that are not directly supported
may be imported as raw data and modified to reproduce the original
sound.