Frequency refers to the speed at which a wave completes a full cycle in one second. These waves are measured in hertz (Hz) and we use different frequencies to find pitch and tune. Different measurements of hertz are meant to subconsciously affect our mind and even evoke certain feelings just by listening to that sound. Specific frequencies can evoke different feelings. There are a specific set of frequencies known as Solfeggio frequencies that are each linked to a different state or sensation. With a total of nine different frequencies the sensations are quite different and even progressing from one state to the next. For an audio sample with all nine frequencies click here.
The Idea behind these frequencies is that you can use them subliminally or build an entire song around it in order to evoke specific feelings within a listener. While some of these vibrations are supposedly able to be used for healing purposes they can be used to give a listener the same feeling that a character in a game should be experiencing. Allowing the player to relate to the character in game on a subconscious level goes beyond normal empathy that an individual would experience. According to David Hulse D.D. music created using the Solfeggio scale can foster an increase of creativity and open thinking (Hulse, 2011). The important information here is that the Solfeggio scale can actually influence the mind and body in ways that the normal 12-tone scale, like what we hear in normal music today, cannot. According to another article the 528 Hz frequency that is a part of the Solfeggio scale is actually proven to repair DNA (Collins, 4). While the goal is not to medically influence a player the evidence that shows music can influence a listener in extraordinary ways based on frequency alone is phenomenal.
Hulse, D. (2011, January 1). Forgotten In Time: The Ancient Solfeggio Frequencies. Retrieved March 7, 2015, from http://www.mindpowermp3.com/Frequencies-music-and-transformation-How-our-audios-work.htmlhttp://www.somaenergetics.com/forgotten_in_time.php
Collins, D. (n.d.). Specific Music for Health Shown to Repair Your DNA. Retrieved March 7, 2015, from http://undergroundhealthreporter.com/music-for-health-dna-repair/#axzz3TepCVcTT