Can a diode/transistor ladder filter be run from a single-ended power supply?

[chordman at flash.net]

keen at eden.com wrote:
>
>> ... that can be run off of a single ended power supply
>>(in this case, a 9V battery).  I just like 9V batteries, OK?

Would the opamp virtual ground work here?

-- Scott Gravenhorst
-- FatMan Site: http://www.teklab.com/~chordman
-- RedWebMail by <R<edStarWare