anti-music "remote control"

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https://www.vice.com/en/article/jg8wnb/square-dancing-noise-china

    Residents who are fed up with the noise from China's ubiquitous
    "dancing grannies" are resorting to a special device that could mess
    with the speakers that blast out loud music.

    They use an infrared remote control dubbed "anti-square dancing
    magical device" to silence the noisy dancing troupes that have taken
    over public squares, parks, and housing estates across China.
[...]
    But with scarce public spaces in urban China, the loud music has
    become a major nuisance for other residents and led to intense
    disputes. In 2013, someone in the central city of Wuhan dumped feces
    on a group of dancing women. And in 2016, a man in the southern city
    of Guilin, angered by the noise, shot at a dancing group's
    loudspeaker with an air gun and accidentally hit a woman on her
    thigh.

    Merchants of the new square dancing repeller are advertising an
    easier way to stop the noise. The device, priced at $15 to $40 each
    on shopping site Taobao, resembles a universal remote control and is
    able to shut down most speakers operated by infrared signals,
    according to the vendors.

The pictures, it's noteworthy to say, make the device look like it has
been built into the case of a small flashlight, not a remote control.

Sounds like a TV-B-Gone:

https://en.wikipedia.org/wiki/TV-B-Gone

But are infra-red controlled speakers really common? I'd expect
bluetooth to be the protocol of choice and not easily duped by such a
device. Or is this something else, and the news story has it garbled?

Elijah
------
can't read Chinese and has not searched for primary sources

Re: anti-music "remote control"
 Eli the Bearded wrote:
===================
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** The IR LED is likely stronger than usual and needs to be focused to work at long distance.  

  
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** IR is the only common method of remote control for audio gear.
    Bluetooth is mainly used with cameras or smartphones.  

FYI:

The news item makes no sense  -  even if you manage to trigger the "mute"  
on a speaker the users will soon put it back in action.  

When they get wise to what is happening, just covering the IR sensor will stop the harassment.


.....   Phil  

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