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- Newsgroups: sci.electronics
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!nobody
- From: brown@ccit08.duq.edu (Jason Brown)
- Subject: Band pass filters
- Sender: nobody@ctr.columbia.edu
- Organization: J. Random Misconfigured Site
- Date: Fri, 18 Dec 1992 13:33:46 GMT
- Message-ID: <1992Dec18.133346.7262@sol.ctr.columbia.edu>
- X-Posted-From: ccit08.duq.edu
- NNTP-Posting-Host: sol.ctr.columbia.edu
- Lines: 25
-
-
- Here's a question from a computer scientist (EE wanna-be) who likes to
- tinker. Lately I've been building things with logrithmic dot/bar display
- drivers. (You know how Computer Scientists love flashing lights :-)).
- Anyway, it occurs to me that using some combination of resistors and
- capacitors in an RC circuit one should be able to filter out all but a
- given frequency from an analog audio source. The ultimate goal here would
- be to set up a number of filters at different freqs. and send the output
- of these filters to log. dot/bar display drivers yielding a spectrum
- analyzer.
-
- Can someone illuminate me as to how figure out what values to use to get a
- specific frequency isolated?
-
- thanks in advance.
-
-
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- "Remember, be humble, always answer the phone...
- No matter who's in the car." - Jack Lemmon
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