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- Path: sparky!uunet!decwrl!access.usask.ca!ccu.umanitoba.ca!bison!sys6626!inqmind!dino
- From: dino@inqmind.bison.mb.ca (Tony stewart)
- Newsgroups: sci.electronics
- Subject: Re: White noise generator.....
- Message-ID: <NXVLoB2w164w@inqmind.bison.mb.ca>
- Date: Tue, 28 Jul 92 00:04:10 CDT
- References: <9981@sun13.scri.fsu.edu>
- Organization: The Inquiring Mind 1 204 488-1607
- Lines: 53
-
- nall@sun8.scri.fsu.edu (John Nall) writes:
-
- > Since I did fairly well at getting my previous question answered
- > on this newsgroup, thought I'd push my luck and ask another :-)
- >
- > I'm one of those people who has to have some "white noise" in the
- > background to sleep. Something like a fan, or rain on the roof,
- > or wind in the trees, something like that. I have a device which
- > I use at home, which is a combination radio/alarm-clock/noise-generator
- > with a couple of good sized speakers and runs on 110v AC. It works
- > fine - generates sound (switch control to either a constant sound or
- > else the sound of surf breaking on a beach) which lulls me to sleep
- > and hides such things as dogs barking in distance, etc.
- >
- > So far so good - this works fine at home. But it is large and bulky,
- > and trying to carry it on a camping trip or on quick out-of-town
- > trips is a drag. Some motels have room air conditions which serve
- > the purpose, but not always.
- >
- > Anyway...finally....it seems to me that if there is a sound-generator
- > chip available, that a little portable unit could be made, which would
- > run on ni-cad batteries (so that it could be recharged), with a small
- > speaker such as is found in a cheap transistor radio. If put close to
- > the ear when sleeping, it should do the trick.
- >
- > Does anyone know of such a device? If not, is there a such a noise-
- > generator chip available? (I don't have access to any sort of technical
- > material on what chips are available these days).
- >
- > BTW, if there is NOT such a device available, someone could probably
- > make money by making one. There are zillions of people like me, who
- > have to have noise to sleep :-)
- >
- > Thanks for any info.
- >
- > John
- >
- >
- > --
- > John W. Nall | Supercomputer Computations Research Institute
- > nall@mailer.scri.fsu.edu | Florida State University, Tallahassee, FL 32306
- > "You cannot be a beacon, if yo' light don't shine!"
- > - heard on the car radio...
-
- I bought a white noise chip 15 yrs ago from either National or Fairchild.
- It probably is obsolete by now. It looks good on a spectrum analyzer but
- the repetitive pseudo-random noise sequence sounded more like an engine
- with a 3 second repeating noise cycle (very noisy engine). I made a 3
- dB/oct pink noise filter and was intending to equalize my room acoustics
- with it ....an unfinished project...
-
- dino@inqmind.bison.mb.ca
- The Inquiring Mind BBS, Winnipeg, Manitoba 204 488-1607
-