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Re: [microsound] audio beam

On Dec 12, 2007 6:50 PM, Kim Cascone <kim@xxxxxxxxxxxxxxxxx> wrote:
> usage in concerts and/or installations could be interesting
> http://adage.com/article?article_id=122491

Très intéressant, indeed.
Here's wikipedia description of the technology:

Concerts could be tricky, as anything getting into the beam could disperse it.

I'd like "personal speakers" based on it.
Laptop speakers and headphones without headphones.

Still phisics implied ask for really powerful ultrasound generators...
not the kind of power laptops and ipods could supply.
(weight and size could pose an interesting problem, either)

It sound so cool I'm tempted to experiment with it, but from what I
read I'd better not. Less than specialized hardware (eg. simple
tweeters) could damage human ears with powerful high frequencies
getting out of control. And every pet in the neighbourhood risks
ending up crazy or deaf. Commercial solutions overcome the risk using
very high frequencies.

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