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- From: alvin@top.cis.syr.edu (Alvin Leung)
- Subject: Re: Neighbor's loud stereo
- Message-ID: <1992Nov16.202124.9141@newstand.syr.edu>
- Organization: Syracuse University CIS Dept.
- References: <1992Nov13.193406.23743@berlioz.nsc.com><1992Nov13.215847.26522@berlioz.nsc.com> <L8C=S4-@engin.umich.edu> <92321.113821MBADBH@rohvm1.rohmhaas.com>
- Date: Mon, 16 Nov 92 20:21:24 EST
- Lines: 46
-
-
- In article <92321.113821MBADBH@rohvm1.rohmhaas.com>, David B. Horvath, CDP <MBADBH@rohvm1.rohmhaas.com> writes:
- |> Assuming that the neighbor is playing the radio (AM or FM), and the houses
- |> are close to each other, it may be possible to interfere (unintentially, of
- |> course) with his reception by tuning to a station 455kHz below the one they
- |> are listening to...
- |>
-
- A practical experiment to determine the existance of Fourier series:
-
- Basic equipment and conditions for this experiment:
- A personal computer
- A neighbor, who listen to radio at late night and lives close to the student
- of this experiment
- A student, who kept up by the neighbor's generous radio boardcast
-
- Procedure:
-
- Unshield the computer by taking it out of its case. Do the same with
- you key board. Then turn on your computer, and play you favor game.
-
- Obervations:
-
- 1) The neighbor's radio should receive huge amount of interference. The
- theoretical basis of this claim is left to the student. (Hint: take a Fourier
- transformation of a 50% duty cycle square wave. Then compute the amount of
- energy reeceived by your neighbor's radio.)
-
- 2) The neighbor's radio output reminds loud and clear. Apperiently, your neighbor
- put in more energy generating sound wave then your computer can genertate radio
- wave. (Note: both suffer the inverse square law to signal lost.) Repeat the
- experiment but increase the number of personal computer. Moving the computer
- closer to the neighbor also helps. Additional suggestion, you can play the
- networked computer games on the personal computers, such as Falcon 3.1.
-
- Final note: Since this experiment only shows Fourier series exists under
- a particular set of experiment conditions, such as room temperature varience,
- the computer game played, etc. The student should redo the experiment as often
- as the opportunity allowed.
-
- ------------------------------------------------------------------------------
-
- #include <std_disclaimer.h>
-
- aleung@mailbox.syr.edu
-
-