How we hear
http://www.allchurchsound.com/ACS/edart/fmelc.html
http://www.allchurchsound.com/ACS/edart/freq.html
http://www.allchurchsound.com/ACS/edart/iile.html

Humans don't hear all frequencies of sound at the same level. That is, our ears are more sensitive to some frequencies and less sensitive to other frequencies. Not only that, but the sensitivity changes with the sound pressure level

Synesthesia
http://www.mixsig.net/
http://web.mit.edu/synesthesia/www/synesthesia.html

Seeing music. A more traditional example of artificially induced synesthesia is the conversion of sound to vision, which is traditionally done with a bank of filters, the output of which drives a light (usually each light is of a different color so that the sound can be "seen" without looking directly at the apparatus). Such a collection of audio filters and light sources is known as a color organ. A device as simple as a blinking light that flashes when someone is knocking at the door may be used to enable a deaf person to "hear" the bell.

Bioacoustics
http://www.dolphinata.com/html/acoustic_therapy.html
http://www.brl.uiuc.edu/

Unlike sonic medicine, acoustics apply the principles of audible sounds to heal. Varying frequencies directed through acupuncture needles (cymatic therapy) treat a wide range of conditions. Centuries ago, Tibetan monks used chanting to heal. Modern, alternative medicine compares the degree of sound therapy to vibrational fields of the universe. All forms of matter, including the human body, require a certain resonance, or vibration to perform well. Tuning body performance using sound or music vibrations brings synchronization and stability to internal structures. Some music therapists analyze the human voice for pitch and frequency. Missing sounds are blended and applied to a special table the client lies upon. Dissonance created by daily life transforms into harmony. Acoustic therapy uses music to help clients seek inner peace and equilibrium of mind and body. In a state of relaxation, the body can heal and strengthen to prevent illness.

Psychoacoustics
http://www.tomkenyon.com/abr1.html
http://is.rice.edu/~welsh/elec431/psychoAcoustic.html
http://www.bucksworld.com/spatial-links.html
http://www.angelfire.com/or/mbuick/
http://www.essex.ac.uk/speech/archive/palm/palm.html

The subjective experience of audio versus the scientific measurement of sound by various devices. For example, the frequency of a signal may not change but we may perceive pitch changes if the amplitude changes. The psychoacoustic model is based on many studies of human perception. These studies have shown that the average human does not hear all frequencies the same. Effects due to different sounds in the environment and limitations of the human sensory system lead to facts that can be used to cut out unnecessary data in an audio signal.

Sound Therapy
http://www.soundtherapy.co.uk/
http://www.biowaves.com/
http://www.worldofalternatives.com/UKHomeopathy/links/soundtherapy.html
http://www.natura-sound-therapy-1-6.com-download.net/
http://www.mindspring.com/~totalhue/sound_therapy.htm

Sound Therapy is a series of frequencies and wave forms. We can describe all matter as organized by wave forms and frequencies. This includes our bodies . The body has specific frequencies for each gland, organ and system and subtle body. Each resonates at a certain frequency. Each must resonate at that certain frequency for health, balance and harmony with all other parts and within itself. We might liken each frequency of that particular body part to a note a member of an orchestra would play. When all the notes coming forth from the orchestra flows together and works synergistically we have beautiful music. If they do not, what do we hear? A sour note. When the body part does not resonate appropriately, we might liken that to a sour note. The gland, organ or system may begin to function at a low level causing functions to slow down or cease. Or perhaps the gland, Organ or system begins to hyperfunction, eventually leading to burnout and then the function slowing down or ceasing. The orchestra may begin to sound like a series of discordant notes, with little harmony and certainly no enjoyment to the listener. Sound therapy is like a person who retunes the instrument. As your parts are retuned and come back into harmony and balance, your internal orchestra begins to once again make beautiful music.

 

special thanks to Raan--