Now, there is a coincidence I was thinking about this very chip a couple of days ago after seeing the reviews for the new film "White Noise". Many years ago I built up a a white noise generator for some experiments with 'Raudive Voices' -see
These chips produce such signals albeit purely electonic and yes with concentration (and imagination) you CAN 'hear' voices ! Sadly the pseudo random cycle repaeats every couple of seconds with the National parts which is a little distracting.
As for a practical solution a PIC would be absolutely ideal and I am sure that a quick Google will even find some code. I could even be persuaded to write a code snippet myself if that fails !
Another method to generate white noise is is to use amplified 'noise' from Zener diodes or reverse biased transistor junctions ?
White Noise is also used for sleep inducers (sometimes, somewhat topically as 'crashing waves' or surf) and I believe that sustained very high power white noise is used as a torture during interrogation !
For audio applications it needs to be turned into 'pink noise' !!!
I am somewhat sceptical about the more paranormal explanations - just remember the brain has evolved as a 'recognition machine' and seeks to make sense of the senses so sort of explains some 'ghost' type phenomena as well.
Mike Meakin
I am working on a circuit that calls for a MM5837N noise generating IC
>chip.
> This is an obselete chip and I need to find a chip that can take its
> place.
>
> Any help in locating an alternate chip would be great.
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