Mix audio files with an offset(at particular points) using SOX

Question

I have two audio files one is 10 secs long and other is 17 secs long, I want to mix the files together so that the 17 sec file starts playing from the start, while the 10 sec file will start after 7 seconds into the 17seconds file. How can I do this?

I followed this link, I also tried other commands mentioned in Sox FAQ, question number 7, but I am unable to mix two files by providing an offset, I also tried the command in command line and the error is same.

The error which I see is

option ` ' not recognized

and the command I used is

sox -m drums.wav "|sox beats.wav -p pad 1.5" out.wav  

Edit: It seems to me that the pipe operator "|" is broken, how do I fix this?

My problem is exactly the same as mentioned in this forum

Answer 1

I think there's an issue with ". Try

sox -m drums.wav '|sox beats.wav -p pad 1.5' out.wav