Posted by Wayne Parham [ 65.69.120.122 ] on January 12, 2004 at 09:08:04:

In Reply to: Oh, made an error posted by Adrian Mack on January 12, 2004 at 01:21:21:

You've definitely got the idea. The calculations are cumbersome, but not too difficult.

Nulls are formed as pockets of areas where certain frequencies are attenuated by out of phase cancellation. The edges of these nulls are fuzzy, as the phase angle nears 180^o and cancellation begins to increase towards the center of the null area. The center is where cancellation is the greatest. At the center, a very sharp notch is formed. Surrounding this is a broader area of general amplitude depression.

Replies:

• Re: Oh, made an error - Adrian Mack 07:40:55 01/13/04 (5)
  • Re: Oh, made an error - Wayne Parham 10:06:55 01/13/04 (1)
    • Re: Oh, made an error - Adrian Mack 23:10:47 01/13/04 (0)
  • typo - Adrian Mack 09:46:45 01/13/04 (2)
    • Re: typo - Wayne Parham 10:16:56 01/13/04 (1)
      • Re: typo - Adrian Mack 10:08:59 01/14/04 (0)