Synthesis Theory

Course Outline   (spring, 1998)
  • 98/01/13-15: Writing Max External Objects
  • 98/01/20-22: Chap. 10 Basic Concepts of Signal Processing
  • 98/01/27-29: Chap. 11 Sound Spatialization and Reverberation
  • 98/02/03-05: Chap. 12 Pitch and Rhythm Recognition
  • 98/02/10-12: Audition week.
  • 98/02/17-26: Chap. 13 Spectrum Analysis (class on 2/20 instead of 2/19)
  • 98/03/03: Chap. 14 Musical Input Devices
  • 98/03/05-10: Chap. 15 PerformanceSoftware
  • 98/03/12: Mid-term exam
  • 98/03/17-19: Spring Break
  • 98/03/24: Chap. 16 Music Editors
  • 98/03/26: Chap. 17 Music Languages
  • 98/03/30: Chap. 18 Algorithmic Composition Systems
  • 98/04/02-09: Chap. 19 Representations and Strategies for Algorithmic Composition
  • 98/04/14: Chap. 20 Internals of Digital Signal Processors
  • 98/04/16: (Class canceled SEAMUS)
  • 98/04/21: Chap. 21 MIDI
  • 98/04/23: Chap. 22 System Interconnections
  • 98/04/28-30: Chap. 23 Psychoacoustics in Computer Music

  • Note: Please do not collaborate on assignments. Helping others is ok, but you should all work independently. 
    Assignment #4: (Due Mar. 31)

    Use Csound (pvanal) to pitch shifting and time scaling. Use a sound file of 2-5 sec. as the source of processing.

    Assignment #3: (Due Mar. 5)
    1. Implement a tempo tracker using Max. The current tempo (number of quarter notes per minute) should be displayed in the Max window periodically, say every second (bonus point for using table to display the tempo curves). You should also display the note values (quater notes, half note, eigth note, etc.) of incoming notes from either the computer keyboard taps or MIDI keyboard. You may assume duple meter so that it is easier to track tempo changes. (Hint: you'll probably want to use the timer object.) Submit the ptach in 314.
    2. Implement a FFT program in C (or JAVA). You can use Moore (83-87) or find one on the Web (note that Press et al. is online). Provide at least two examples to test the program. Submit both the hardcopy and the software (314 or gigue).

    Assignment #2: (Due Feb. 20)

    Implement a phaser either in SuperCollider or MSP. You may model it after Sony M7 (Algorithm 10). There should be multiple allpass filters in parallel and/or serial. LFO should be used to control the amount of delay in the allpass filter.


    Assignment #1: (Due Feb. 5)

    Find the frequency (magnitude) response of the filter : y(n) = x(n) + x(n-2).
    Derive using only real numbers (cos()) then repeat the derivation using z-transform. 

    Ichiro Fujinaga 1998.02.26