Re: [SoX-users] acoustic-marks in audio-file

[Ulrich K. <ul...@ch...>]

Rainer M. Engel <en...@en...>:

> I made a concatenation test and it worked to up to 500 files. Not beyond.

There is often a restriction on the length of a command line. SoX  
itself should not be limiting the number of files.

You can avoid the shell in at least two ways:

1. Use a playlist file. Make a file "list.m3u" that contains all the  
file names, each on a separate line, then run
   sox list.m3u output.wav effects ...
or similar.
2. Use internal globbing:
   sox "file_*.wav" output.wav
Note the quotes around the first argument, they tell the shell not to  
replace this with a list of matching file names (instead, SoX will do  
this internally).

> Perhaps something like this..
> sox -cat ascending file_%04d.wav new-wave.wav
> ..would be nice to concat all files matching that filter to one outputfile.

Actually, globbing (both shell and internal) will do that. The files  
are ordered lexicographically; i.e., as long as numbers are  
zero-padded (file09, file10; not file9, file10), you can just write  
file_*.wav or "file_*.wav" as above.

Ulrich