Does anybody know where can I get or make an Eletronic Project to avoid Dogs? We know Dogs are sensible to a sound frequency rate. So I was wondering how to make a Project where I could specify sound frequency and intensity.

Thanks!

 

There was a kit for sale at the local electronics chain store that is supposed to do that. My neighbors dogs habit of howling at ambulance, fire& police sirens had me surely tempted to build one.
But, when you think about it, one needs a powerful tweeter to generate inaudible frequencies of sufficient level for that purpose. And tweeters are very directional in their output so, to *really* deter the dog it would have to be aimed directly at it. Quite impractical in my case and leaving it switched on constantly while aimed in the general direction would only let the dog get used to it and, perhaps, make it howl even more .
If you want to build something to avoid dogs with a sound blast, consider first the practicalities to carry a powerful tweeter horn with you and how to supply power to it, then, if you are happy with that, make an oscillator that tunes from 20 -30KHz and an amplifier that boosts the output to the maximum the tweeter can handle.
Pehaps they make piezo horns now that operate in that frequency range, check on this, might be simpler than finding a tweeter with a high enough frequency & wattage range. There are 'dog whistles' on the market but their output is so low it is more likely they attract dogs rather than deter them
Good luck

 

Thanks Klaus!
I really liked you idea!
I´ll let you know when I have something working here ok!?

 

i remember i saw something preety nice in a magazine.
it was a device that could detece whan dogs barked and then emit this annoying sound. also i remember that the sound was modulated using some random numbers, so to generate a more annoying one. basically, all you had to do was to place it outside, and plug it in and forget about it.
but, is was quite directional.