What's that, Bridget? Skippy's in the well?? [A Bug's Life]

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You are a dog

Or maybe you are a mosquito, you certainly can't be human.

The highest pitched ultrasonic mosquito ringtone that I can hear is 21.1kHz

Find out which ultrasonic ringtones you can hear!

Might try this out on the other computer in case it's a sound processing artifact. But there was a marked difference between 21.1kHz and the next one up - I just couldn't hear it, no matter how high I turned the volume.

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There are 12 comments on this entry. (Reply.)

The 22.4kHz file is a dummy to detect cheaters -- there's no actual sound in it. So I'd guess you have a sound processing artifact.

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I couldn't hear the 22.4kHz file at all.

Trying this on my Windows/IE machine I notice the tones get a lot quieter at 14.1kHz. If I turn the volume up I can still hear something annoying, but the pitch doesn't rise as you would expect from the frequency.

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You are in your twenties

You can still hear reasonably well and you can play this without my old fart colleagues hearing it which makes you feel kinda good.

The highest pitched ultrasonic mosquito ringtone that I can hear is 15.8kHz

Find out which ultrasonic ringtones you can hear!

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It says I'm in my 20s, so it's nice to know I haven't prematurely damaged my hearing with all these gigs, given my 20s are a few years behind me now.

Oh, and if I turn up the volume as high as it will go I can just hear the mosquito teenager repellent.

Interestingly while I can't hear the ones above that in the same way (it's not a really high pitched whistle) it does seem like I can hear *something* all the way up to 21.1, and nothing at all at 22.4. I haven't counted those though.

Oh, if you claim to hear that one it becomes obvious why it sounds different.

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I can hear up to 21.1.

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I wouldn't trust anything that close to the limit, certainly not without looking at the waveform in the file and making sure there no beating was being introduced.

I should try generating some pure tones at a 96KHz sample rate and play them back on my good external audio box. That should eliminate any artefacts that might creep in at the barely audible range.

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I can hear the mosquito tone on this site, but only get up to 15.8 on your test.

I wonder what frequency the tone made by our silent TV set to AV is. It drives me BATTY but Pete can't hear it at all.

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Probably just under 16KHz from the horizontal scan.

I really should record my computer at work to find out what noises it's making, there are a couple of dodgy capacitors in the power supply that make different tones depending on exactly what it's doing.

It varies between being very annoying and extremely useful as you can hear a process that is stuck in a tight loop.

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Wow. My hearing really sucks. I can hear the one at 12kHz but not the one at 14.1kHz. I knew I had trouble hearing people in noisy situations, but had no idea my upper range had degenerated that badly.

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I can't hear the 12kHz one.

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I had a look at the files, and there's big artefacts at the start and end of each one which are audible, but the waveforms themselves aren't too bad. I'd challenge you to hear 21.1KHz if I faded it in and out so there were no blips at the start and end of the file.

i tried using the a test oscillator in Logic (the music package I use) on my good external audio interface at a 96KHz sample rate (just to make sure there was lots of headroom) and I can hear a smidgen over 17KHz, much above that and I couldn't reliably tell if the channel was muted.

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I heard the start/end artefacts, but on my Eee (not my PC) I could hear something in between. I really doubt it's a good reproduction of the tone. I'll have the Eee at Eastercon, so you can listen to it and say "No, Bridget, that sounds like someone hitting a bin with a stick" :-)

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A Bug's Life

What's that, Bridget? Skippy's in the well??

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September