The program purpose is to design digital finite impulse response filters. The
design is performed with well known windowing technique. The first step is to
design filter frequency response from 0 to fs / 2, where fs is the sampling
frequency. This is done graphically. Then designed response is sampled and
inverse discrete Fourier transform is performed. The result of the IDFT is then
windowed by one of available windows selected by user. In v 1.0 following
windows are available: rectangle window, triangle window, Blackman window and
Kaiser one (with adjustable beta coefficient in 2.0 - 20.0 range). This
windowed IDFT is just a set of filter taps multipliers. DigiFilter performs
then DFT to get the real filter frequency response (which differs from the
designed one) and displays it.

New in 2.3:
- Chebyshev window design method.
- Fixed a bug in one of custom classes causing troubles with running the
  program multiple times.

New in 2.2:
- Oscilloscope-like tracking cursor with attenuation and frequency readout.
- Added missing version string and MUI application dercription tags.

New in 2.1:
- Autoscaling graph grid.
- "Aiming" mousepointer when dragging frequency response nodes.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
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[generic]                 4574    4724  96.8% -lh5- dc12 Nov  5  2005 DigiFilter-2.3.info
[generic]                 1028    2332  44.1% -lh5- 1b85 Jul 10 16:36 DigiFilter-2.3/catalogs/digifilter.cd
[generic]                  885    1694  52.2% -lh5- c9ad Jul 10 16:37 DigiFilter-2.3/catalogs/polski/digifilter.catalog
[generic]                59390  127292  46.7% -lh5- 7b22 Jul 10 16:23 DigiFilter-2.3/DigiFilter
[generic]                 6095    6095 100.0% -lh0- 67fd Nov  5  2005 DigiFilter-2.3/DigiFilter.info
[generic]                 4574    4724  96.8% -lh5- dc12 Nov  5  2005 DigiFilter-2.3/filters.info
[generic]                   93     121  76.9% -lh5- 9eeb Nov  3  2005 DigiFilter-2.3/filters/1-4band.filter
[generic]                  101     128  78.9% -lh5- 0233 Nov  4  2005 DigiFilter-2.3/filters/22050-decimator.filter
[generic]                  107     147  72.8% -lh5- 16dc Nov  4  2005 DigiFilter-2.3/filters/3khz-notch.filter
[generic]                  111     152  73.0% -lh5- 7028 Jan  8  2006 DigiFilter-2.3/filters/cheap_radio.filter
[generic]                  108     139  77.7% -lh5- d9f1 Jan  6  2006 DigiFilter-2.3/filters/disco-bass-boost.filter
[generic]                   90     121  74.4% -lh5- a896 Nov  2  2005 DigiFilter-2.3/filters/halfband.filter
[generic]                  113     152  74.3% -lh5- 1d66 Jan  6  2006 DigiFilter-2.3/filters/telecom.filter
[generic]                  115     161  71.4% -lh5- ad7d Nov  4  2005 DigiFilter-2.3/filters/voice-stop.filter
[generic]                 1438    3064  46.9% -lh5- 9e90 Jul 10 17:07 DigiFilter-2.3/readme.txt
[generic]                 7161    7301  98.1% -lh5- 3b46 Nov  5  2005 DigiFilter-2.3/readme.txt.info
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total        16 files   85983  158347  54.3%            Jul 10 17:28