speako's and power supplies

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>I've seen the low hum people are referring to on many different laptop
>computers. Its origin is naturally mysterious as the AC power supply
>shouldn't be having a problem, yet it is known that some of these "humming"
>computers stop buzzing if run only on battery power. There is one theory
Well I am one of the people that have the problem with a dell laptop. And I
can tell you that the hum is significantly reduced when you remove the power
supply. I know this does not make sense as the power is DC by the time it
gets to the PC but as you say it may not be a poor laptop power converter.
That was using VV and the recognition was bad. I now have an IBM from work
and loaded NS Preferred. As I don't have the adaptor necessary I am using
the PCs internal mike, which works amazingly well. Voice recognition with no
external mike!
If anyone is interested I can send them a sound file to demonstrate this
problem
I am obviously not happy with my Dell at the moment as it seams to be
unusable for VR.


Tony Swales


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