[SoX-users] How to apply effects to a subsection of the input file?

[forget c. <for...@gm...>]

I'm looking for a way to programmatically apply effects to subsections of
an input file. For example, given a 10 second input file, I might like to
adjust the speed of the first second slower by 10%, then the next second
faster by 10%, then the next one slower, etc.

Is there any way to do this using the sox command line?

I can certainly do it more brute force, trimming an input file into many
files, applying the effects to those files, then splicing the results back
together. But I wondered if there's any way to do this in one go?

thanks