==background==
audio info learning: http://www.labbookpages.co.uk/audio.html


==ps3 eye==

===hardware teardown===
http://www.instructables.com/id/The-EyeWriter/step6/Hack-the-PS3-Eye/

http://codelaboratories.com/research/view/ps3-eye-disassembly

===recording with arecord===
 arecord -D hw:1,0 -f S16_LE -c 4 -r 16000