Music 220a Homework #4

About

I structured this project around a three section form. The first section takes a set of eight MIDI pitch values [68,60,66,63,69,67,73,70], cycles through them slowly, then accelerates the cycle rate until the auditory streaming illusion is perceivable. The second section replaces the prior set of MIDI pitches with a new eight [50,54,53,57,56,60,59,63], utilizing the pattern +4 then -1. In terms of cycle rate, this section begins at the quickest point from the previous section but abruptly decelerates back to the slow pace heard at the beginning. For the last section rather than build the speed up again for a traditional finale, I decided to emphasize the lugubrious quality of the instrumental tone (heard here slower still). Section three also changes the pitch set to [60,54,66,52,64,59,59,61].

My goal for the instrumental parameters was to make the project as expressive as possible.

For instance:
Pitch skew contour in semitones [0.1, 0.3, 0.7, 0.5, 0.1]
Pitch register contour [1.0, 1.5, 2.0, 1.0]
Vibrato frequency, excursion in semitones// setVib(9.0, 1.0);
vibEnv.set (50::ms, 500::ms, 0.8, 100::ms);

After going through the steps to produce a binaural-encoded stereo .wav file I removed the silences at the beginning and end, as well as normalized the levels in Audacity.

ChucK File

  • hw4.ck
  • Final Sound File

  • aw_binaral.wav
  • Intermediary Files for Creating Binaural-Encoded Stereo

  • ir.zip
  • 4channel-01.wav
  • 4channel-02.wav
  • 4channel-03.wav
  • 4channel-04.wav
  • binaural4.ck
  • radioPlayer.ck
  • stereoRecorder.ck