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give that dog a muzzle

01 March, 2006 16:22

From around 8:00 in the morning to 4:00 in the afternoon, our neighbors dog, directly below us, barks non-stop.

It is so frustrating listening to that bark through-out the entire day. So, idiotically, I was thinking to myself, a dog whistle might shut the thing up.

The frequency of a dog whistle is generally between 5200Hz and 12800Hz.

I have a pretty decent amplifier that can produce a tone close to these ranges, so I decided to give it a try, in hopes to shut the fucking dog up. (damn dog, damn dog, damn dog)

Using Audacity, a Linux sound mixer, generator, studio application, I generated a steady tone of 12400Hz, well below my 19kHz range capacity.

I exported this to a wav file, and used XMMS to generate a steady loop of the tone range; the range being a sign wave of an amplitude of 1, and I started at 12400Hz.

So wow, I was somewhat training the dog to shut it's fat lip. Then, without warning, I heard multiple barks from inside this complex.

Stupid is what stupid does, I turned up the volume on the amplifier, just to make sure the fuckers got my point. (damn dogs, damn dogs, damn dogs)

My receiver automatically terminated the signal to my speakers, warning me that my digital signal (an analog signal would not have been accurate to these ranges), at that amplitude, was dangerous. So the story begins there.

My right channel no longer works; it is rather distorted. However, it can still produce the frequency range that stops that fucking dog from barking (damn fucking dog, @#$#$$%@#%). I know this, simply because it works.

I am no sound expert, but there is some level of distortion to this tone. The human ear can sense sound in the range of 20Hz - 20kHz; that being, your body can respond to the pressure of these amplitudes (may not be a distinguishable sound, but it is felt, similar to dejavu). So, my question is, is there any way to produce a tone, with a frequency, between 12400Hz and 19kHz, that is inaudible by the human ear?

It's not so much getting this dog to shut up, but is there any way I can piss it off just as much as it does myself?

[Bullshit]
[Comments(3)] [Trackbacks(0)] [Permalink]

hillarious [Reply]

this is hillarious. i love your intuition.

i was under the impression that dog whistles were typically on the higher end of the audible human spectrum. i think you'd want to create an ultrasonic sound that is above 20kHz, as you wont hear it but the dog will.

this guy built a circuit with a piezo speaker that does the job:
http://www.geocities.com/tomzi.geo/whistle/whistle.htm

wikipedia suggests the same frequency range that i learned earlier in life:
http://en.wikipedia.org/wiki/Dog_whistle

you could probably get a pc speaker to create that sound - i don't think you need much for decibels, do you? you may be able to find a piezo speaker in a smoke detector as well.

let me know how it works out.

heck | 02/03/2006, 08:59

ultrasonic dog repellers [Reply]

i think the device you're trying to build is specifically labeled an "ultrasonic dog repeller". a google search returns a lot of results:
http://www.google.com/search?q=Ultrasonic+Dog+Repeller&start=0&ie=utf-8&oe=utf-8&client=firefox-a&rls=org.mozilla:en-US:official

heck | 02/03/2006, 09:03

dog repellers [Reply]

The geocities link is wild! What a great idea. At first glance, it looks like the parts shouldn't be more than a few dollars.

He mentioned an idea at the bottom of the page that interested me. He suggested a clap-on clap-off system of sorts in response to the dog bark.

I think I have a project. Thanks for the links heck!

myside | 03/03/2006, 13:48

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Function: verb
Etymology: Middle English, from Old English spIwan; akin to Old High German spIwan to spit, Latin spuere, Greek ptyein intransitive verb
1 : VOMIT
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Land where drunk cows swim and home to my daily hand