Adaptative filter

"Fred Marshall" <fmarshallx@remove_the_x.acm.org> wrote in message 
news:1bidnXydRY1z81rYnZ2dnUVZ_ualnZ2d@centurytel.net...
> Fred's interpretation of information:
> *********************************
>                            +-----------+
>            +---------------|    EF     |<-------------+
>            |           f   +-----------+              |
>            |                                          |
>            |                                          |
>            |                                          |
>            |       +---[LMS]<---------------+         |
>            |       |     ^                  |         |
>            |       |     ^                  |         |
>            |       |     ^                  |         |
>            |       |     ^                  |         |
>           +V      -V     e    +-----------+ |         |
>     i --->(+)---->(+)----+--->|  DELAY    |-+---------+----> o
>          +        +           +-----------+
>
>    Adaptive compensator
>    Removes correlated effects of external filter "EF" at the output

I suppose I should have seen it right away.  In order for o~i, LMS*o=EF*o 
so, LMS=EF.  This seems to be a classical system identification problem: 
"what is EF?"  There is a wealth of literature on the subject of "system 
identification".  I'd look there.....

Fred