Music 171 homework 1

Music 171 homework 1
This assignment is to make a Pd patch to play a simple melody that includes sliding pitches and continuously changing amplitudes. The melody is borrowed from the marching chant of the wicked witch's castle guards:

time   frequency       amplitude   suggested button number
0      440             on          1
0.5    slide to 660                2
1      slide to 440                3
1.5                    off         4
2      slide to 660    on          5
3      slide to 440                3
3.5                    off         4

Your successful patch should sound like this. It should not sound like this .

To make the patch (each of the following steps is worth 2 points for a total of 10):

make an oscillator with a line~ object to control its amplitude
set up an additional line~ object to control the oscillator's amplitude
make message boxes capable of ramping the amplitude control on and off. "On" should correspond to an amplitude of about 0.1 to avoid speaker or ear damage.
make message boxes to cause the frequency to jump to 440, and to slide to each of 660 and 440
arrange 5 buttons to set the message boxes off in the correct combination. As seen in the last column of the list of changes above, five buttons are enough since two of them get re-used. Label the buttons with comments (perhaps just the numbers 1-5 as above) so we can figure out how to play the patch.

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