raise you hand if you can still hear 40Khz

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raise you hand if you can still hear 40Khz

voodoopenguin Offline

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#23

11-30-2021, 07:22 PM

There was a quite successful series of experiments done a while ago of transmitting high frequencies in public places at night that were notorious for marauding gangs of younger people. It couldn't be heard by older people but made the younger ones feel 'out of sorts' so would disperse.

Paul

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raise you hand if you can still hear 40Khz - by Fritz - 11-30-2021, 01:27 PM

Re: raise you hand if you can still hear 40Khz - by MrNoBody - 11-30-2021, 01:34 PM

Re: raise you hand if you can still hear 40Khz - by cbelt3 - 11-30-2021, 01:35 PM

Re: raise you hand if you can still hear 40Khz - by pdq - 11-30-2021, 01:38 PM

Re: raise you hand if you can still hear 40Khz - by DP - 11-30-2021, 01:41 PM

Re: raise you hand if you can still hear 40Khz - by voodoopenguin - 11-30-2021, 02:19 PM

Re: raise you hand if you can still hear 40Khz - by Fritz - 11-30-2021, 02:25 PM

Re: raise you hand if you can still hear 40Khz - by Spiff - 11-30-2021, 02:52 PM

Re: raise you hand if you can still hear 40Khz - by Fritz - 11-30-2021, 02:56 PM

Re: raise you hand if you can still hear 40Khz - by Grateful11 - 11-30-2021, 03:13 PM

Re: raise you hand if you can still hear 40Khz - by TheCaber - 11-30-2021, 03:14 PM

Re: raise you hand if you can still hear 40Khz - by mikebw - 11-30-2021, 03:16 PM

Re: raise you hand if you can still hear 40Khz - by pdq - 11-30-2021, 03:40 PM

Re: raise you hand if you can still hear 40Khz - by Bernie - 11-30-2021, 03:49 PM

Re: raise you hand if you can still hear 40Khz - by JoeM - 11-30-2021, 03:53 PM

Re: raise you hand if you can still hear 40Khz - by Fritz - 11-30-2021, 03:56 PM

Re: raise you hand if you can still hear 40Khz - by Yoyodyne ArtWorks - 11-30-2021, 04:04 PM

Re: raise you hand if you can still hear 40Khz - by MartyStickle - 11-30-2021, 04:17 PM

Re: raise you hand if you can still hear 40Khz - by freeradical - 11-30-2021, 04:31 PM

Re: raise you hand if you can still hear 40Khz - by RAMd®d - 11-30-2021, 05:29 PM

Re: raise you hand if you can still hear 40Khz - by freeradical - 11-30-2021, 06:08 PM

Re: raise you hand if you can still hear 40Khz - by S. Pupp - 11-30-2021, 07:15 PM

Re: raise you hand if you can still hear 40Khz - by voodoopenguin - 11-30-2021, 07:22 PM

Re: raise you hand if you can still hear 40Khz - by deckeda - 11-30-2021, 07:33 PM

Re: raise you hand if you can still hear 40Khz - by zachdog - 11-30-2021, 07:40 PM

Re: raise you hand if you can still hear 40Khz - by Lew Zealand - 11-30-2021, 07:48 PM

Re: raise you hand if you can still hear 40Khz - by Filliam H. Muffman - 11-30-2021, 08:36 PM

Re: raise you hand if you can still hear 40Khz - by Fritz - 11-30-2021, 08:41 PM

Re: raise you hand if you can still hear 40Khz - by Dennis S - 11-30-2021, 09:16 PM

Re: raise you hand if you can still hear 40Khz - by pdq - 11-30-2021, 09:40 PM

Re: raise you hand if you can still hear 40Khz - by N-OS X-tasy! - 11-30-2021, 09:52 PM

Re: raise you hand if you can still hear 40Khz - by N-OS X-tasy! - 11-30-2021, 09:54 PM

Re: raise you hand if you can still hear 40Khz - by Rolando - 11-30-2021, 09:58 PM

Re: raise you hand if you can still hear 40Khz - by kj - 11-30-2021, 10:53 PM

Re: raise you hand if you can still hear 40Khz - by jonny - 11-30-2021, 11:49 PM

Re: raise you hand if you can still hear 40Khz - by deckeda - 12-01-2021, 05:35 PM

Re: raise you hand if you can still hear 40Khz - by mikebw - 12-01-2021, 07:47 PM

Re: raise you hand if you can still hear 40Khz - by deckeda - 12-01-2021, 08:10 PM

Re: raise you hand if you can still hear 40Khz - by maco - 12-02-2021, 05:25 PM

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