Infrasound is any soundwave under 20 hertz that can make the listener feel various emotions - it is like a deep bassline in music which can physically affect a person by making them have goosebumps or think that they feel the presence of someone standing beside them.
The use of infrasound has become more frequent amongst film producers in a bid to manipulate the viewer into experiencing the movies’ events to the full. This is especially evident in horror movies which historically relied on orchestral scores to fill in the silence and create an atmosphere. Now with infrasound, the horror-movie underscore can cause a more direct sense of danger, making the audience become a passive participant. Infrasound induces anxiety, extreme sorrow, heart palpitations, and shivering.
The 2002 French movie “Irréversible” was a psychological horror film that followed two men through the streets of Paris as they sought to avenge a brutally raped girlfriend. An American film critic warned that the movie was so violent and cruel that most people would probably find it unwatchable. His prediction was correct as a lot of viewers headed for the cinema exit within a short time of the movie beginning. However, this wasn’t necessarily because of what was seen on screen but because, as explained by the director Gaspar Noé, a 27-Hz frequency of bass had been used to induce panic and anxiety.
The 2007 horror movie “Paranormal Activity” used a similar technique which also led to viewers rushing out of the movie theatre because they were so frightened.
Source: The Enemy of Ignorance – facts, trivia, & general knowledge
Smarter Every Day
Elsmere is from Northern Ireland and has always had a passion for learning. He studied at the University of Ulster and graduated with a Master’s degree in Management and Corporate Governance.