Thanks for everyone's help.  I found a pretty easy way to find the log10.
I'll just going to scale the numbers to between 0 and 1/2 (the spec has
changed since my first post).  Then use 3.33*(sqrt(sqrt(x))-3  That should
be just enough accuracy, considering that I am only dealing with four
decimal places.

This also works for numbers between 0 and 1 in case anyone is interested;  I
didn't bother to test anything beyond that.  I hope this helps other people.


Stuart Allman
Studio Sound Design
studio@halcyon.com