a taxonomy of sounds

Fluids and Media
    which are displaceable and have infinite extent are "free field"
        3D volumes: air, underwater, earth (P-waves?)
        2D surfaces: laminar air flows, waves on water and earth (S-waves?)
        1D filaments: air and water enclosed in pipes, super-long strings or wires
    when they become bounded, and if they are elastic, they can resonate
        3D structures: buildings, ice sculptures (even air masses?)
        2D plates: thin metal and wood, stretched membranes, ice sheets
        1D columns: air and water stuck in pipes, stretched strings, beams, trees

Propagation of Sound Waves in Fluids or Elastic Materials
    Free field: attenuation over distance, high-frequency loss over distance, spectral time smear over distance
    Waveguides: end reflections, boundary absorption
    Coupled waveguides: energy transfer between them, radiation from ends
    Nearly and fully enclosed spaces: complex patterns of reflections

Aperiodic Sound Sources (in free space, no waveguides)
    Impulses (explosions, hand clap, balloon burst)
    Free turbulence (wind, water, bowed desktop computers, frictional motion)

Periodic Sound Sources from Mechanical Resonators
(with waveguides whose time delays match those of hearing range)
    Impusively excited media (popped, struck, plucked) -- externally applied momentary excitation
    Mechanically driven passive system (buzzed string, voice) -- non-entrained, secondary excitation
 where pitch is independent of resonator [vocal tract]
    Mechanically driven active system (blown, bowed) -- entrained near-DC external energy source
 excites system through coupled non-linear gating [glottis itself apart from vocl tract]
    (always some identifiable non-linear means which converts flow to vibration)

Resonator Extras:
    Passive non-linear alterations (sitar, cymbal, gong, non-uniform string)
    Sympathetic excitation from another sound source (tubes, strings) -- coupling via air or boundaries
acoustically driven passive system (can include feedback, and can become self-sustained active system with electronic amplification)
    Fixed Resonator Complexes (instrument bodies)
    Time-varying Resonator Complexes (vowels)
    Entrained turbulence (whistling resonators, pulsed noise when coupled to drive mechanisms)

Environmental Resonators:
(time delays are below hearing range, > 50 msec., e.g., large nD volumes, elastic complexes)
    Impusively excited  medium (thunder, earthquakes, knocking on a big tree)
    Mechanically driven medium  (helicopters, drilling a building)
    Sympathetically excited by another sound source(3D  = reverberation
chamber, 2D = echoes, plate reverb, 1D = viaduct comb filter, flutter echoes)