[sdiy] digital potentiometers as "volume" control

[Tom Haber]

Hey all,

I'm currently designing a filter bank. The idea was to have 2 filters that 
can be placed
in serial or parallel or anything in between.

To allow full flexibility, it has 6 potentiometers.
http://research.edm.uhasselt.be/thaber/junk/filter.png (the boxes are the 
filters)

Are digital potentiometers a good way to accomplish this? The filters are 
controlled using
multiplying D/A converters with filtering caps to counter zippering. 
Obviously zippering is
an issue with the potentiometer approach.

Are there different solutions?

Regards,
Tom Haber