"Vreme": Analysis of sound from student protest in Belgrade - matches vortex cannon

The non-governmental organization Irshot concluded, based on sound recordings made on March 15th in Belgrade on Kralja Milana Street, that the sonic boom was consistent with a vortex cannon and that the source of the sound was at least 700 meters from the location where it was recorded.

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Protests in Belgrade on March 15th, Photo: Reuters
Protests in Belgrade on March 15th, Photo: Reuters
Disclaimer: The translations are mostly done through AI translator and might not be 100% accurate.

The non-governmental organization Earshot is investigating whether the Serbian authorities used sonic weapons on protesters. Earshot is the world's first non-profit organization that conducts audio research for human rights and environmental protection, writes "Vreme".

The non-governmental organization Irshot concluded, based on sound recordings made on March 15th in Belgrade on Kralja Milana Street, that the sonic boom matched a vortex cannon and showed that the source of the sound was at least 700 meters from the location where it was recorded.

On March 16, activists in Serbia contacted this international non-governmental organization and asked it to investigate whether the Serbian authorities used sound weapons on protesters who were silently paying tribute to the victims of the collapse of the railway station canopy in Novi Sad.

Earshot is the world's first non-profit organization that conducts audio research for human rights and environmental protection, according to "Vreme".

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Irshott obtained 12 videos documenting moments in which weapons were allegedly used against protesters. Four of those videos contain sound consistent with the noise produced by the Vortex Ring Gun or Vortex Cannon.

This weapon expels air from its cylinder at speeds of 300 kilometers per hour, and its ejection produces a howling noise comparable to a jet engine, along with vortex rings that can be ionized.

This could create electromagnetic interference with devices such as hearing aids, as confirmed by witness reports at the protest.

If it is a vortex gun, the attached footage was taken at least 700 meters from its source. At that distance, the combustion of the weapon is no longer audible; only the distinct hiss of the pressure wave traveling away from the point of discharge towards the crowd can be heard, causing mass panic.

"Vreme" points out that, since Irshot wants to further investigate the incident, he is asking anyone who has a video with specific sound recorded on March 15th to contact them.

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