> No scaling (I wanted to add utilities to do that but we did not need them for
> our project back then).  Just a linear slop to fade or cross-fade from one
> clip to the next.  (What curve is best for a fade--an S curve that is smooth
> and flat at each end?)

What's the scale?
 
Since dB is defined in terms of Psychophysics, and it's a log (ratio)
scale, I think you want something akin to linear on a log scale. That
means linear in terms of dB, but it's not clear to me what physical
property you're actually attenuating (power? voltage?) 

Andy 

> -- Al