Given the time and the frustration and lack of creativity I mapped out my aggravation levels on the route to school.
These were the retarded ideas I had:
The voice of my fellow New Yorker calling me through the window
The train rider ratio of crazy to normal people on the trip from my Brooklyn flat to FIT
How well I know the area in which my parents used to live and how little I know of where they just moved and how it is only 3miles apart or less but so completely different.
Winter dryness.
Getting the English cold.
Mapping out everything I've ever wanted to be when I grow up and see how it stemmed off into the field I'm in now.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
So the voices through my window, door, wall, ceiling, etc, got me thinking. MAYBE I'll map out sound. Everything I hear. How it affects me? How it interacts with my surroundings? My brain? Hm. HMMMM
Let the research begin!
SOUND, physical compressions through a medium
Audible compression waves, as used in music
A speech sound, or phone, in phonetics
Sound is a disturbance of mechanical energy that propagates through matter as a wave (through fluids as a compression wave, and through solids as both compression and shear waves). Sound is further characterized by the generic properties of waves, which are frequency, wavelength, period, amplitude, speed, and direction (sometimes speed and direction are combined as a velocity vector, or wavelength and direction are combined as a wave vector).
Humans perceive sound by the sense of hearing. By sound, we commonly mean the vibrations that travel through air and are audible to people. However, scientists and engineers use a wider definition of sound that includes low and high frequency vibrations in the air that cannot be heard by humans, and vibrations that travel through all forms of matter, gases, liquids, solids, and plasmas.
The matter that supports the sound is called the medium. Sound propagates as waves of alternating pressure, causing local regions of compression and rarefaction. Particles in the medium are displaced by the wave and oscillate. The scientific study of the absorption and reflection of sound waves is called acoustics.
Noise is often used to refer to an unwanted sound. In science and engineering, noise is an undesirable component that obscures a wanted signal.
SOUND PRESSURE
As the human ear can detect sounds with a very wide range of amplitudes, sound pressure is often measured as a level on a logarithmic decibel scale.
The sound pressure level (SPL) or Lp is defined as
where p is the root-mean-square sound pressure and p0 is a reference sound pressure. Commonly used reference sound pressures, defined in the standard ANSI S1.1-1994, are 20 uPa in air and 1 µPa in water. Without a specified reference level, a value expressed in decibels cannot represent a sound pressure level.
Since the human ear does not have a flat spectral response, sound pressure levels are often frequency weighted so that the measured level will match perceived levels more closely. The International Electrotechnical Commission (IEC) has defined several weighting schemes. A-weighting attempts to match the response of the human ear to noise and A-weighted sound pressure levels are labeled dBA. C-weighting is used to measure peak levels.
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