Handouts

Announcements

Weekly Assignments

  1. Syllabus
  2. Maple file, June 11
  1. Class begins May 30
  1. Homework 01
  2. Homework 02
  3. Homework 03
  4. Homework 04
  5. Homework 05
  6. Homework 06
  7. Homework 07
  8. Homework 08
  9. Homework 09
Bass

Modeling 120Hz bass response in my living room.

The subwoofer is in the upper right corner.

Red= high sound pressure in phase.
Blue= high sound pressure out of phase.
Yellow= low sound pressure.

The mathematical model is a simple one, derived by looking for low amplitude waves in the compressible Navier-Stokes equations.

Plot shows values predicted by a numerical simulation of my mathematical model. These gradients were later confirmed by testing with a decibelmeter.

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