SOUND
Lyd - form (longitudinal-compr / transverse-shear)
- egenskaper 20-20K Hz, freq., wavelength, period, amplitude,
intensity, speed, direction
- acoustics
- noise
- in gases, in solids (not in vacuum)
- sound pressure (dB)
- stereo / multi channnel
- dynamic range
- physical phenomena producing sound (fire, wind, earthquakes,
etc.)
- doppler effect
Listening
- perception (stereo, diaphragm, sinuses)
part of perceptual system with eyes, touch, smell and taste
- brain sound processing
- self dampening when speaking
- hearing aids
- hearing damage (120 short term / 85 long term / pain 120dB)
- the ear is made to survive and we do our best to destroy it
- it's a safety system
Making
- speech, animal sound organs (frogs, whales, birds)
- musical instruments
- sonar
- ultralyd, lyd, infralyd
- ultralydrensing
- språk
- music
Environment
- acoustics
cause - generating mechanism (transduction) -
propagation - reception (transduction)
- trinnlyd / luftbåren lyd
- materials (hard, soft, suspension)
for generating
for absorbtion
frequencies
- volume
- form (auditoria, acoustic reflectors, etc.)
- the under water world / ground (elephants)
Insulation
- mass
- material
- suspension
Technology
- history
notes and instruments, pianola, music boxes, phonograph, wire,
tape, digital, solid state.
- recording
distance, sound pressure, gain, environment, quality
microphones (throat, air, bone)
- clipping / gain /distance
- mono / stereo / multi channel
- recording formats
- compression
- playback
- noisecancelling
Programvare
- QuickTime player
- Audacity
Examples (Damascus / Beirut / Tripoli)
svarttrost (http://abdallah.hiof.no/trost/)
lyder i forskjellige omgivelser
URLs - http://www.pianola.com/
- http://www.pianola.org (mp3)
- http://en.wikipedia.org/wiki/Sound
- http://en.wikipedia.org/wiki/Music_box
Last modified: Wed May 12 12:55:58 2010