electronic music

 (1) general ideas 
   * how "long" in time a sound do we need for a spectrum?
   * how do we describe an arbitray waveform?
   * or an instrument?
      - "attack"
      - "decay"
      - "formants"
      ... but the spectrum changes with time, typically.
   * so we come up with all kinds of fancy tricks to make
     weird sounding instruments
      - frequency modulation
      - phase modulation
      - filters and subtractive synthesis
      - and so on...

 (2)
 MIDI
 see http://en.wikipedia.org/wiki/MIDI
 32k bits/sec
 message like "note on", "note off"
 16 channels, in/out/thru
 instruments 1-127
 
 see OSC - Open Sound Control
 
 (3)
 Synthesizers
 http://en.wikipedia.org/wiki/Synthesizer

 FM frequency modulation
 http://en.wikipedia.org/wiki/Frequency_modulation

 typical : 
 frequency modulation synthesis
 http://en.wikipedia.org/wiki/Frequency_modulation_synthesis


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 November 18

 computer music
 chapter 29 in the text; see pg 666

 See number crunch frequency modulation :
    f(t) = f0 * (1 + b sin(2pi f0 t / n)
    where, say, n=3 and b = 0.001
 
 Other notes on synthesizers 

    * various signal processing tricks
      * additive filters
      * subtractive filters
      * frequency modulators

    * can be analog (electronics) or digital (computers)

    * sampling
      * record a real sound and play with it
      * change frequency
      * filter it
      * turn spray can into instrument...

    * physical modelling synthesis
      * model physics of an entire instrument...
      * http://en.wikipedia.org/wiki/Physical_modelling_synthesis

  Music notation systems

    * abc notation
      http://en.wikipedia.org/wiki/Abc_notation
    
      Lilypod
    * http://en.wikipedia.org/wiki/Wikitex

      Jim's web interface to music score and midi from .abc files
    * http://zonorus.marlboro.edu/~mahoney/abc/scripts/www_abc.cgi