[SoX-users] using sox to do simple cross-fade? or some other tool?

[Britton K. <bk...@fa...>]

I'd like to do a simple cross fade of two wav files (or raw, I
don't care since I have lovely sox to convert back later :).

Ultimately I'd like to batch cross-fade many files together
into a single huge wav.

Can some sox effect be used to do this?

If not, is there a simple (hopefully command line) tool to
do this for a given crossover length that someone knows
about?  I'm guess ecasound can so it somehow but to be
honest ecasound intimidates me a bit.  Any recipe would be
most welcome.

Finally, if the above are tricky or involve a learning curve
for an app, its tempting to do this myself.  Would you just
use to triangular ramps with knees at the same point, or
do you have to do something logarithmic?

Thanks,
Britton