check this out!!

[SpudBlaster15]

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[starman]

You'll need to have good set of speakers with high quality tweeters in them and a decent "hifi" or pro power amp for this test to be anywhere close to valid. Laptop and basic desktop speakers (and associated amp chips) won't cut it. Also, don't trust what you hear from a $10 (or $30 for that matter) set of "earbuds" ... they are useless for this kind of test.

Many modern speaker and headphone products have a built in gain curves designed into them at certain frequencies and are almost all crap. You'll want as "flat" a system as possible for these tests.

[watto]

I did it on a really old laptop and I could hear everything except 22000 which woke my dog up on the other side of the house

[MaxuS the 2nd]

Couldn't hear anything about 17,000Hz.

[Spitfire]

Could hear everything exept for 15 Hz.
Does that mean im abnormal?

[Carlman]

lol i just asked my mum to and she could only hear up to 13k hrtz

[SpudFarm]

i could hear all from 15Hz to 18000Hz...
the15Hz was like bombombombombombombombom

[DYI]

Just retook the test now that I'm awake, and I can hear fine up to 21kHz.
My speakers can't produce below 50Hz though. They just stop altogether.

[Carlman]

Just retook the test now that I'm awake, and I can hear fine up to 21kHz.
My speakers can't produce below 50Hz though. They just stop altogether.

6.1 soround sound is brilliant for all the test hrtz, especially the 50 hrtz

[sniper hero]

my speakers became phage for 10 min!
I put it at highest volume
tonight I will wake up my little brother and my parent won't heat it lol
so cool
and at the intercom from school will I try to

[starman]

Could hear everything exept for 15 Hz.
Does that mean im abnormal?

No 15 hz is basically inaudible. Plus your audio playback components more than likely cuts off way above that.

You need a calibrated audio system to do this right guys. These results you are getting are all over the place for a reason.

[SpudUke5]

I can hear them all pretty good, 2200 faintly but its there.

I cant hear below 20hz.