The phenomenon of Binaural hearing in the human auditory system. This is the processes of localisation of sound sources that our brain interpolates into physical locations. Of course this is a hot topic for Cochlear implants, the idea that you can give someone with profound hearing loss not only the ability to hear, but the ability to discern where the sound source is coming from. Anyway, not to bore you with the specifics, this cognitive process can be demonstrated using what is called 'Binaural beats', which are tones played back through stereo headphones that appear to be moving around although there are only two speakers. Such technologies exist that utilise this phenomenon like surround sound and digital stereo recording of music to set up the sound stage. Additionally, studies have been done that seem to demonstrate that these tones at certain frequencies can cause feelings of relaxation and in some cases, reduce anxiety. So I created a small database of audio files consisting of Binaural beats at varying frequencies (100Hz to 600Hz) with the varying perceptual cues. So, how does this affect you? Well being that anxiety often has its way with us at some stage in our lives, this database is available to you at a very affordable price. Instructions:You must listen with stereo head phones, it will not work throughordinary speakersPlease ensure the volume is at a comfortable level (start low andincrease if necessary).Due to the oscillatory nature of pure sinusoidal excitation of thespeakers, fluctuations in pressure can cause fatigue over an extendedduration, so just be conscious of this.Enjoy, and I hope it helps in those stressful situations.Here are some statements from the Internet about Binaural hearing.Just and extract from wiki:"An uncontrolled pilot study of Delta binaural beat technology over 60 days has shown positive effect on self-reported psychologic measures, especially anxiety. There was significant decrease in trait anxiety, an increase in quality of life, and a decrease in insulin-like growth factor-1 and dopamine and has been successfully shown to decrease mild anxiety. A randomised, controlled study concluded that binaural beat audio could lessen hospital acute pre-operativeanxiety."Some additional information without research support:"There have been a number of claims regarding binaural beats, among them that they may help people memorize and learn, stop smoking, help dieting, tackle erectile dysfunction and improve athletic performance. Scientific research into binaural beats is very limited. No conclusive studies have been released to support the wilder claims listed above. However, some studies indicate that binaural beats may have a relaxing effect. In absence of positive evidence for a specific effect, however, claimed effects may be attributed to the power of suggestion (the placebo effect)."