耳年齢テスト 高周波の音を用いた聴力テストでわかるあなたの年齢 

   




イグノーベル賞のすべて!~ 仕掛け人マーク氏に聞く 【日本科学未来館×ニコ生】の番組を見ていたら、大人は高周波の音が聞えなくなるので、若者にしか聞えない高周波数の音を使ったデバイスが使われて社会問題になった例が話題に上っていました。

下の「耳年齢テスト」動画によれば、7000Hzは全年代に聞こえ、8000~9000Hzは60代の人に聞こえ、10000~11000Hzの音は50代の人でも聞こえ、12000~14000Hzの範囲の音が聞えればあなたは40代、15000Hzの音が聞こえれば30代の人で、20代後半の人なら16000Hzでも聞こえ、18~24歳という若い世代の人は17000~18000Hzの範囲の音でも聞くことができて、19000~20000Hzという高い周波数になると13~17歳のティーンエイジャーの若者しか聞くことができないようです。自分でも試したところ、年齢相応の結果が出ました。耳年齢は嘘をつかないですね。

モスキート音『耳年齢テスト』 (大人は聞こえないと話題の音)

もっと細かく、どの周波数までなら自分が聞えるのかを知りたい方は、下の動画をお試しください。20Hzの低周波から20,000Hz の高周波まで連続してピッチがかわっていきます。くれぐれも音量に注意し、耳を痛めないようにお願いします。

Hearing Test HD

 

モスキート(The Mosquito)

高い周波数は若者にしか聞こえないことを利用した、自分の家や店の前にたむろする迷惑な若者を撃退するアラームが商品化されています。「The Mosquito」(モスキート)というその製品は、17400Hzの周波数の音を発信するそうで、この音は24歳以下の若者にしか聞えないとのこと。

Mosquito MK4 (Anti-Loitering device)  £594.00

Over the 10 years since The Mosquito was launched, CSS have sold many many thousands of them worldwide and in 2017 it still continues to be the MOST effective and safe way to disperse groups of loitering teens from locations they are not welcome. (compoundsecurity.co.uk)

  1. The Mosquito (WikiVisually.com)
  2. Hearing Test – Can You Hear This? 
  3. Dad-of-ten outraged after neighbour’s ‘ANTI-CHILD alarm’ leaves seven-year-old daughter ‘screaming in pain’ (Mirror ByTom BevanAnita Merritt 18:11, 16 JUL 2018) Single father Thomas Weldon, 52, says his kids are prisoners in their own home due to the controversial ‘mosquito’ device that only people under 25 can hear
  4. Couple face £5,000 fine for installing anti-child noise repellant outside their home (The Telegraph By Helena Horton4:47PM GMT 09 Nov 2015) Michael Mitchell, 66, and his wife Kathryn, 52, were sick of noisy children playing outside their house – so they installed a repellant
  5. Sonic youth: The high-pitched sound alarm for under 25s Is Mosquito, the high-pitched alarm only under-25s can hear, a blessing or a bane? Jamie Merrill sounds it out(INDEPENDENT Wednesday 19 June 2013 17:34 Jamie Merrill)
  6. Couple who installed high-pitch ‘mosquito’ alarm to ward off racist teen vandals are now under investigation for noise nuisance (Mail Online By SUZANNAH HILLS, PUBLISHED: 10:08 BST, 18 June 2013 | UPDATED: 11:04 BST, 18 June 2013)
  7. High-Pitched Device Drives Away Teens (CBS News April 23, 2008, 5:15 PM) The device, called the Mosquito, is audible only to teens and young adults and was installed outside the building to drive away loiterers. The gadget made its debut in the United States last year after infuriating civil liberties groups when it was first sold overseas. Already, almost 1,000 units have been sold in the U.S. and Canada, according to Daniel Santell, the North America importer of the device under the company name Kids Be Gone.
  8. The sound that repels troublemakers (BBC 2006/4/4) It was named the ‘Mosquito’ because the sound resembles that of a buzzing insect. And it works by emitting a harmless ultra sonic tone that generally can only be heard by people aged 25 and under. In trials, it has proven that the longer someone is exposed to the sound, the more annoying it becomes.

 

先生にだけ聞こえない携帯呼び出し音

  1. Vancouver teen creates ringtone app that only young people can hear; heads to Dragon’s Den (Vancouver Sun GILLIAN SHAW Updated: October 17, 2013)
  2. A New Ring Tone Teachers Can’t Hear (CBS NEWS By LLOYD VRIES AP June 12, 2006, 8:10 AM) Students are using a new ring tone to receive messages in class — and many teachers can’t even hear the ring. Some students are downloading a ring tone off the Internet that is too high-pitched to be heard by most adults. With it, high schoolers can receive text message alerts on their cell phones without the teacher knowing.
  3. A Ring Tone Meant to Fall on Deaf Ears (The New York Times, By Paul Vitello, June 12, 2006)

 - テクノロジー, テクノロジー&ガジェット