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- SbFFT version 1.2, a program for spectral display and filtering using
- Sound Blaster audio cards. COPYRIGHTED FREEWARE.
-
-
-
- SbFFT is a spectral display and filtering program for use in Amateur Radio
- and audiophile applications. It's features include:
-
- * Sound Blaster 16 (or 100% compatible) input and output.
-
- * Band widths of 2K, 4K, 8K or 16K Hz.
-
- * Spectral resolutions of 1 Hz to 16 Hz per pixel.
-
- * Display of power spectral density with any of 4 color maps in either
- linear or logarithmic scale.
-
- * Define and use up to six filters simultaneously -- band pass, band stop,
- low pass, and high pass. Filters have 25 Hz skirts, 3 to 50 dB.
-
- * Filters are defined graphically by mouse movement.
-
- * Net filter passband is displayed at all times.
-
- * CDROM and line SB 16 inputs
-
- * .wav file inputs and outputs
-
- * Filters can be selectively enabled and disabled by a single keystroke.
- This allows for quick reconfiguration in case of changing conditions, etc.
-
-
- Please read the file manual.txt at least through the alphabetical list of
- commands before running this program.
-
-
-
- REQUIREMENTS (see manual.txt for full explanation):
-
- SB 16 or 100% compatible, DOS 3.0 or higher, mouse,
- minimum 486/66, Pentium recommended,
- SVGA, VESA 640x480 & 1024x768 resolutions, 380K free RAM.
-
-
-
- DIFFERENCES FROM VERSION 1.1
-
- 1) The SbFFT program has been built with a smarter graphics library.
- It should now operate with a much wider range of VESA SVGA cards.
-
- 2) The AGC algorithm has been enhanced.
-
- 3) Defaults have been assumed for the BLASTER environment variable. If the
- variable is set in your system, whatever information it contains will
- be merged in with the default values. See Installation, below.
-
- 4) An interrupt conflict between the MPU401 and the A/D converter on the
- Sound Blaster has been eliminated. Because of this comflict, SbFFT would
- start and terminate normally but would not display spectra on some sytems.
-
- 5) SbFFT now generates pcx files instead of tiff files. The pcx files are
- a fraction of the size of tiff files. Also, the graphics library that
- generated the tiff files failed to initialize the tiff header completely,
- causing some graphics viewer programs to crash.
-
- 6) Improved mouse response at fine resolutions.
-
- 7) Full screen mouse movement to make filter definition easier.
-
- 8) Filters may be enabled/disabled or deleted by mouse clicking in the
- filter active band.
-
- 9) Numerous typographical errors have been eliminated from the manual.
-
-
-
- INSTALLATION
-
- 1) create a directory C:\SBFFT
-
- 2) copy the .zip file to the directory C:\SBFFT
-
- 3) Unzip the .zip file. You should find files:
-
- SBFFT.EXE
- SBFFT.PIF
- MANUAL.TXT
- README.TXT
- FIGURE1.JPG
- FIGURE2.JPG
- FIGURE3.JPG
- FIGURE4.JPG
- FIGURE5.JPG
- FIG6-9.JPG
- FIG10-13.JPG
- FIGURE14.JPG
- FIGURE15.JPG
- RS-12.WAV
- WNU31.WAV
-
-
- 4) Make sure the Sound Blaster card is installed and functional
-
- 5) Insure that the BLASTER environment variable is set. If necessary, put
- into the autoexec.bat file on the boot drive a command of the form
-
-
- SET BLASTER=Aaaa Iii Dd Hh Pyyy
-
- where aaa = base address of the SB 16 card (usually 220)
- ii = number of free interrupt, i.e., one not used by another device
- d = 8-bit DMA channel (usually 1)
- h = 16-bit dma channel (usually 5)
- yyy = MPU401 (MIDI) address (usually 330)
-
- For more information, see the Sound Blaster documentation
-
- 6) uninstall or disable screensavers
-
- 7) SBFFT.EXE is ready to run
-
- 8) as a minimum, read the sections 'Screen Display' and 'Alphabetical list of
- commands' below before you run the program
-
- 9) for a quick test, if you have a CDROM attached to your Sound Blaster,
- start an audio CDROM playing with a DOS CDROM player and run the program.
- Alternately, you can play the rs-12.wav file included with
- this package. Type 'B' 3 times to put SbFFT into 2K Bandwidth. Then type
- 'P' and when a file name is requested, type 'rs-12'<Enter>, without
- the quotes.
-
-
-
-
- COPYRIGHT
-
- The program code, manual file, and associated graphics figures are
- Copyright (C) 1996 by Kevin J. McWilliams, KW5Q. All rights are reserved.
-
-
- LICENSE
-
- This program and associated files are COPYRIGHTED FREEWARE. They may be
- freely distributed so long as they are distributed in their entirety, are not
- modified in any way whatsoever, and no charge is made for the copyrighted
- material. A maximum charge of $3 (three dollars U.S.) may be assessed for the
- duplication of these materials.
-
-
-
-
- Your comments are welcome.
-
- email the author Kevin KW5Q at kevinm@mail.eden.com.
-
- Enjoy, and 73's -- KW5Q
-