It is clear that the earthquake early warning radio will malfunction if you play 'a certain song'
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' Earthquake Early Warning ' predicts the arrival time and seismic intensity of strong tremors in various places immediately after an earthquake and informs them as quickly as possible. The Earthquake Early Warning, which had been in trial operation since 2004, has been supported by many smartphones since the Great East Japan Earthquake, and I wondered if this warning sounded on many smartphones even during the Kumamoto earthquake that occurred the other day. think. The ' EWR200 ' earthquake and tsunami warning device constantly monitors the Earthquake Early Warning and emergency warning broadcasts , and when a warning sound is detected, it notifies the occurrence of an earthquake or tsunami by radio sound. The alarm was secretly attracting attention as a disaster prevention goods, but it malfunctions when the voice actor Aki Toyosaki 's song is played, so it is a blog that publishes information on mobile phone base stations, gadgets, radio, radio waves, etc. Mobilers High is actually verifying the malfunction.
[Verification] Phenomenon that the radio for Earthquake Early Warning malfunctions in the music of Aki Toyosaki – Mobilers High
http://www.remotekid.com/?p=2565
It seems that the EWR200 owned by Mobilers High was set to receive and monitor the radio waves of NHK FM 's Maebashi broadcast, and it seems that this malfunctioned around 1:13 pm on January 8, 2016. When the blog did a real-time search on SNS, it seems that the radios of users all over the country who were receiving NHK FM were also malfunctioning. Therefore, Mobilers High obtains the music that was played on NHK FM when the EWR200 malfunctioned, and verifies the reproducibility of the malfunction.
The 'EWR200' that malfunctioned looks like this.
When I checked the NHK FM program HP, it turned out that the song that was playing at the time of the malfunction was AAA's ' Koi Oto to Amazo ' or Aki Toyosaki's ' Shunpu SHUN PU '. Therefore, Mobilers High is verifying whether the EWR200 malfunctions by purchasing the above two songs from the iTunes store and putting the songs on the FM wave with a Bluetooth compatible FM transmitter while playing them on the iPhone. In addition, the verified EWR200 is set to receive the 'prefectural area code' of the emergency warning broadcast, and it seems that it was supposed to receive only the emergency warning broadcast targeting Gunma prefecture, but the malfunction is not an emergency warning broadcast but an emergency I knew that it was happening because it was mistakenly detected as an earthquake early warning.
Subsequent verification has revealed that it occurs in the interlude part in the second half of 'Spring Wind SHUN PU'. You can listen to 'Spring Wind SHUN PU' from the player at the bottom of the link below. However, the interlude part is not included.
In the verification, we used the FM transmitter
Aki Toyosaki The moment when 'Shunpu SHUN PU' is mistaken for an Earthquake Early Warning chime-YouTube
The white terminal located at the bottom left of the screen is the EWR200. As '85.6' is displayed on the LCD screen of the FM transmitter (on the right edge of the screen) connected to the iPhone, the transmission frequency of the FM transmitter is set to '85.6MHz' in the movie.
When playing 'Shunpu SHUN PU', the EWR200 suddenly works.
Looking at the EWR200, the lamp in the 'breaking news / alarm' part is lit, and the alarm is detected and the radio is automatically activated.
In the verification movie, the transmission frequency of the FM transmitter is set to '85.6MHz', but in reality it seems that verification was performed from 76.0MHz to 0.1MHz each, and it seems that it malfunctioned if it was repeated multiple times even at a frequency that failed to reproduce once. .. From this result, Mobilers High judges that the recall rate is not 100%, but there is no difference in the judgment result depending on the transmission frequency.
After repeating the verification experiment, there is a high probability that the song will malfunction when played from around 2 minutes and 30 seconds, and most of the songs did not malfunction when played from after 2 minutes and 54 seconds. From this, Mobilers High speculates that there is a melody around 2 minutes 30 seconds to 2 minutes 54 seconds (interlude part) of 'Shun Pu SHUN PU' that can be mistaken for an Earthquake Early Warning chime.
Many malfunctions have been reported on earthquake early warning reception radios other than the EWR200.
Amazon.co.jp: Logitec [FM / AM compatible] Earthquake / tsunami emergency warning radio Dry cell / AC power compatible with flashlight LRT-ER100: Home appliances / camera
I used it for 3 months, but despite the fact that there is no breaking news or emergency warning broadcast.
The radio rang at a loud volume several times and I was awakened while I was sleeping.
Although the misannouncement of the Earthquake Early Warning of the Japan Meteorological Agency has been making noise,
There is no more radio malfunction due to the sweetness of the design.
Good point ... I can sleep with peace of mind. Easy to set up. The main body is cheap. The maintenance cost is only the electricity bill. Simple and MUJI design.
Bad point ... There was a malfunction once, and it was awakened in the middle of the night (it seems that the music played on the radio program was mistakenly detected as an earthquake early warning). The adapter is in the way and I can't stick it to the wall.
I bought it because my cell phone is old and does not support Earthquake Early Warning. Fortunately or unfortunately, I haven't had a chance to play an active role yet, but it's great to be able to sleep with peace of mind.
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