I live in Japan, Tokyo, and sometimes I come across these annoying/distracting high-pitched noises even in residential areas. They are a nuisance for bypassers too, if you've got ears young enough. But the residential areas don't have any problem with loitering youngsters, so I keep wondering if the noise is targeted against pests or wild animals. This article made me think if I should seriously start measuring the v…
Ultrasonic investigations in shopping centres
31–40 of 145 posts
Re: Ultrasonic investigations in shopping centres
#32They were quite expensive and I know of a few people who got annoyed and specifically vandalised them due to the annoying sound.
Re: Ultrasonic investigations in shopping centres
#33I had almost forgotten about the “Mosquito” devices for deterring youths that became ubiquitous in some areas during the late 2000’s and early 2010’s. They were quite expensive and I know of a few people who got annoyed and specifically vandalised them due to the annoying sound.
Re: Ultrasonic investigations in shopping centres
#34Re: Ultrasonic investigations in shopping centres
#35I had almost forgotten about the “Mosquito” devices for deterring youths that became ubiquitous in some areas during the late 2000’s and early 2010’s. They were quite expensive and I know of a few people who got annoyed and specifically vandalised them due to the annoying sound.
I'm glad those seem to have mostly faded away? The installation of them especially in spaces open to the general public has always struck me as deeply sick and antisocial
What’s awfully irritating is that I can still hear them. I’m in my 30’s with pretty gnarly hearing damage, and can still hear that frequency range.
Re: Ultrasonic investigations in shopping centres
#36Have you ever listened to a badly mixed song with a persistent high-pitched whine undercutting part (or all) of it? Certainly that's not on purpose either, but I doubt anystudio equipment is giving off an intentional "test" whine either, so I've always wondered how that ends up happening.
Re: Ultrasonic investigations in shopping centres
#37Have you ever listened to a badly mixed song with a persistent high-pitched whine undercutting part (or all) of it? Certainly that's not on purpose either, but I doubt anystudio equipment is giving off an intentional "test" whine either, so I've always wondered how that ends up happening.
On my Monday morning drive to work, I put on a CD by the band Cake, an album I'd listened to dozens, if not hundreds of times at this point, and would you believe that now, piercing through the mix, I heard the squeak of the drummer's kick pedal. Never noticed it before, but because I was so focused on those frequencies for two days straight, now it was all I could hear.
I switched to listening to purely electronic music that month, and I never noticed squeaky kick drums in studio recordings again.
Re: Ultrasonic investigations in shopping centres
#38Have you ever listened to a badly mixed song with a persistent high-pitched whine undercutting part (or all) of it? Certainly that's not on purpose either, but I doubt anystudio equipment is giving off an intentional "test" whine either, so I've always wondered how that ends up happening.
Re: Ultrasonic investigations in shopping centres
#39Re: Ultrasonic investigations in shopping centres
#40Have you ever listened to a badly mixed song with a persistent high-pitched whine undercutting part (or all) of it? Certainly that's not on purpose either, but I doubt anystudio equipment is giving off an intentional "test" whine either, so I've always wondered how that ends up happening.
It's not like a single frequency buzz or carrier wave. It changes along with the pitch of the lyrics and clearly some kind of filtering they're doing to the voices. Either that or I'm paranoid and hearing things.