I545 ASSIGNMENT: MORE R - Don Byrd - 25 Jan. 2008

1. Modify ChromaticWanderings.r to make it involve whole-tone scales. A _whole-tone
scale_ is one where the interval between notes is always 2 semitones. There are only two
different whole-tone scales: (a) C, D, E, F#, G#, A#; and (b) Db, Eb, F, G, A, B. Change
the program so it emphasizes notes in one of them by playing those notes for twice the
duration when it does play them. Be sure to add a comment saying which one your program
emphasizes. You don't need to make it work for any values of the low and high notes of
the range, just those in the range it plays, but it'd be better if it works for any
possible range of MIDI notes. (You'll recall that part of last week's assignment for the
Informatics and CompSci majors was to do something similar with a scale other than
whole-tone. Whole-tone scales are easier :-) .)

INFORMATICS AND COMPUTER SCIENCE MAJORS (and anyone that feels ambitious), also do
this:

2. Make your new "WholeToneWanderings" program:
	(a) use one whole-tone scale when it's going up and the other when it's going down;
	
	(b) emphasize a certain note (i.e., letter name) regardless of octave when it's
	going up and a different note when it's going down, and include a comment giving the
	letter names, either by playing it even longer than normally-emphasized notes or by
	making it louder than the other notes (you're right, we haven't talked about
	controlling loudness yet :-) ); and

	(c) work for any range, if it doesn't already.

EVERYONE: Send me your source code as an e-mail attachment.

EXTRA CREDIT: Does your program's output have much of a feeling of rhythm? Probably not.
Can you think of ways to change that? For extra credit, implement it.

A HINT: to help you tell if your program is working, have it play longer notes: set
tatum to something like .25 instead of .1.

JUST FOR FUN: With genuine MIDI, the note number must be an integer, but with our R
programs, it doesn't. What happens if you have your program take steps of, say, 0.5
semitones instead of 1 semitone?