PRELIMINARY LIST OF APPLICATIONS
Sounds/vibrations/waveforms;  and related sensors

Medicine and Biofeedback;
  skin electrodes, accelerometers, microphones, pressure transducers

Cochlear implants for the profoundly deaf (an ideal application!)
Enhancement, recognition of EKG, EEG, EMG, stethoscope sounds 
HRV (Heart Rate Variability) studies for heart attack prediction
Vascular and (complete) heart sounds
Lung sounds
Brain noises, detection of brain aneurysms
Organ noises
Gait wobble
Muscle, head and hand tremors


Sounds in the normal range of hearing;
  microphones

ASR (Automatic Speech Recognition, including shortcuts to speech deconvolution)
Audio processing (speech and music timbre modification, transposing, filtering, etc.)
Goniometry (determination of origin of a sound based on phase measurements)
Impedance spectroscopy? (using phase measurements: corrosion, delamination, etc.)

Seismic noises ( vibrations of the earth);
  seismometers (also known as seismographs), accelerometers

Explosions, meteors
Volcanic eruptions: estimating strength, imminence
Man-made noises: door-slamming, footsteps
 Terrorist, military, industrial activities
Machinery in operation, vehicle movement
 Atomic tests, collapsing buildings, collisions

Climate: storms, volcanoes, lava flows, icebergs
Earthquakes: Rayleigh waves (like waves on a pond); “S” waves (shear);
 “P” waves (compressional, faster)  (1- 35Hz)

Hydroacoustic noises (noises in the sea);
  hydrophones; wave motion sensors; photocells

Acoustic rain gauges
Whales, fish, boats, submarines etc.
Underwater explosions
Sound equivalent of light reflected by water
Swimming pool alarm

Infrasound (noises in the air below 20 Hz; mostly 0.1 to 4Hz);
 microbarometers (air pressure),  accelerometers, magnetometers

Collisions, tactical weapons, nuclear tests
Sonic booms, space launches and reentries
Traffic noise, chemical explosions
Gas fires, oil well fires, forest fires?
Northern Lights
Meteors, volcanoes, avalanches, tornadoes, earthquakes
Swaying motion of buildings (<1 Hz)
Automotive vibrations (5-500Hz)
Aircraft (10-2000 Hz)

Machinery noises;
  microphones, accelerometers, magnetometers

Welding and other processes
RPM and torque

Combustion and refrigeration efficiency (Carnot cycle)
Abnormal noises
Burnt windings
Misfires
Wear and tear
Loss of lubricant
Imbalance, etc.

Magnetic Environment;
  magnetometer

Magnetic field of the Earth (and solar storms)
Electrical motors performance
Soundness of electrical windings and pole pieces
Vehicle proximity
Electrical power grid
Earthquakes?