kdyz uz je rec o dolphin attack a ultrazvuku :o)))
Otestujte si svuj sluch:
http://www.noiseaddicts.com/2009/03/can-you-hear-this-hearing-test/
Jste na tom dobre? Fajn, ale tohle
http://www.noiseaddicts.com/wp-content/uploads/2009/02/test_tone_teenager.mp3
asi preci jen bude uz nad vase sily :o)))) Cim to je zpusobeno?
http://www.noiseaddicts.com/2009/02/hearing-test-hear-like-teenager/