sep 25
Images
- show and tell : image manipulation task
Audio
Discuss sound :
Key ideas :
- time (sec) vs frequency (Hz)
- octave up doubles frequency: logarhythmic
- perception trumps physics : wikipedia: aural illusions
- sound files (see my old notes)
- container vs codec
- uncompressed (WAV), lossless (FLAC), lossy (MP3, OGG)
- MP3 is actually "MPEG-1 audio layer 3"
- basically two tricks: (1) if its busy, you can't hear the busy stuff, so delete it; (2) if its boring, compress with "repeat this"
midi :
- "events" that trigger "instruments"
- On MacOS : SimpleSynth + MidiKeys
audacity :
- multiple tracks + labels
- various effects
- change "envelope" etc
recording / mixing :
- analog to digital device needed
- our music studio
- ... or I have some gear in my office
