[linux-audio-user] Create high-pitch noises like the mosquito device

[Tim Howard]

On 3/30/07, listreader <listreader at lupulin.net> wrote:
> I saw the mosquito device that will annoy younger
> people, but not older people:
>  http://www.compoundsecurity.co.uk/teenage_control_products.html
>
> Its pretty expensive.  How would I begin to create that
> from scratch?  Can a sound-card generate those frequencies?
>
> I imagine I would need a special speaker.
> How about an amp?, does that also need to transmit the
> higher freqs.?  Is it like going from a bass amp to
> a guitar amp? (and I need to keep going?)
>

It would likely be easiest to just make an electronic device like the
one in the article...  Use a 555 timer (or other simple oscillator)
hooked up to a small audio amp, then to a tweeter.

I know, I know, not a Linux solution...  ;-)

-TimH