In May 2003, researchers in London conducted a mass experiment by hiding a within contemporary music during two concerts.
: Tandy’s research showed that standing waves at this frequency can cause a sensation of chest pressure and a "feeling of a presence" in the room. Mechanism of Anxiety Induction 17_hz_infrasonidos_para_la_ansiedad_inquietud_t...
: Scientists from the National Physical Laboratory used a 7-meter pipe to generate the tone, playing it during specific pieces without the audience's knowledge. In May 2003, researchers in London conducted a