Need to combine merge two (or more) input files (# channels unknown) and choose 1st (or 2nd) channel from each one to make a multichannel with one of each.
A good addition would be with an input format option (ie: -C 2 would choose 2nd channel of file), or -C1-2 would pickup stereo LR from a multichannel file.
Remix effect options can be more flexible adding a letter to specify channels from which file we want
ie: sox input1.wav input2.wav output.wav remix a1 b1
This makes a stereo file with 1st channel from first file (a), and 1st channel from second file (b). This allows merging files without worrying of how many channels each one has.
My current workaround:
Last edit: isidroco 2022-09-14