Three programs were produced to:

  • Calibrate the sound source amplitude vs frequency, producing a spreadsheet of magnitude and phase.
  • Play a random order of tones to the fish, while recording the output, then producing a spreadsheet of results.
  • Play fixed frequency bursts to allow the electrode to be placed.

Two of the programs are shown below.

The programs are at

http://people.ece.cornell.edu/land/PROJECTS/LockInAmp/index.html