| Re: very directional speaker technology |
|
 |
|
 |
|
 |
|
 |
Group: alt.sci.physics.acoustics · Group Profile
Author: JosephKKJosephKK Date: May 2, 2008 18:44
On Thu, 01 May 2008 12:49:06 -0400, "Michael A. Terrell"
earthlink.net> wrote:
>
>Terry Given wrote:
>>
>> Wouldnt a honking great phased array of ultrasound transducers, in
>> conjunction with IR cameras and some clever software make a great
>> burglar "alarm" - 140dB that tracks their head. Betcha that'd make you
>> leave a room, fast.
>
>
> Don't forget a couple dozen 1 million lumen strobe lights, flashed in
>sequence to disorient them, till the cops arrive.
Not in any perceivable sequence, it becomes too easy to adjust.
| 
