Page 302 - Analog and Digital Filter Design

11
CHAPTER

FILTER DESIGN SOFTWARE

I worked with Number One Systems to produce FILTECH after I had written
simpler programs to help my work.' Some of these simpler programs are sup-
plied on disk for readers to try themselves, complete with the source code
(written in the C language). Operation of the supplied programs will be
described in this chapter.

Filter Design Programs

There are a number of filter design programs available. A description will noz
be given for each one. since the specifications are being improved all the time
and any description could soon be out-of-date.

Super FILTER^^'?
Filter Master Active'
Filter Master.4 Filter Master comes from the same supplier as Filter
Master Active.
Elsie5 Passive (LC) filters only.
Signal Processing Worksystem'
AFDPLUS'
PC Filter'
FilterProT".' FilterProT'" is free software supplied by Texas Instru-
ments (previously provided by the Burr Brown Corporation). Pro-
grams include FILTER42 and FILTER2.
(9) Filter Solutions@"
(10) FILTECH Professional

Supplied Software

There are five DOS programs supplied with this book on the website
uulw.bh.com/companions/075067S470: active. filter2. ELLIPSE. diplexer, and
match2a. Because they are based on DOS: they have to be run within a DOS