This AmigaBASIC program demonstrates a musical illusion based upon
perceptual circularity of widely spaced tones whose volumes are defined as
a sinusoidal relationship to their frequency.  

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  294     974  30.2% -lh5- 04e2 Dec 31  1987 Stairs.info
[generic]                   48      48 100.0% -lh0- 9107 Dec 31  1987 Stairs/.info
[generic]                  148     190  77.9% -lh5- e709 Dec 31  1987 Stairs/README.fnf
[generic]                  445    2566  17.3% -lh5- 9e1c Dec 31  1987 Stairs/README.fnf.info
[generic]                 2647    5465  48.4% -lh5- 1fa8 Dec 31  1987 Stairs/Stairs
[generic]                  223     560  39.8% -lh5- bc0e Dec 31  1987 Stairs/Stairs.info
[generic]                  469     763  61.5% -lh5- 806f Dec 31  1987 Stairs/Stairs.ReadMe
[generic]                  219     550  39.8% -lh5- 819a Dec 31  1987 Stairs/Stairs.ReadMe.info
[generic]                  349     875  39.9% -lh5- 2a25 Dec 31  1987 Stairs/tone1
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         9 files    4842   11991  40.4%            Dec 31  1987