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

[Rainer M. E. <en...@en...>]

Hello Ulrich,

I tested your advice and had difficulties with 1000 files (each 1sec).

sox.exe FAIL formats: can't open input file `..490.wav`: Too many open files

I attached a compressed container with these 1000 and m3u files.
https://dl.dropbox.com/u/414433/SoX/sox_m3u-concat.7z (uncompr. 360MB!)

------------------------------------------------------------
sox.exe Q:\sox\combine_0480.m3u Q:\sox\combine_0480.wav
sox.exe Q:\sox\combine_0500.m3u Q:\sox\combine_0500.wav
sox.exe Q:\sox\combine_1000.m3u Q:\sox\combine_1000.wav

sox.exe "Q:\sox\silence_*.wav" Q:\sox\combine_1000.wav
------------------------------------------------------------

>From above lines only the first one works here.
I use sox 14.4.0 (on WIN32).

Is it a caching issue? Because ..

sox.exe Q:\sox\combine_0480.wav Q:\sox\combine_0480.wav
Q:\sox\combine_0960.wav

and

sox.exe Q:\sox\combine_0960.wav Q:\sox\combine_0960.wav
Q:\sox\combine_1920.wav

work just fine in the same environment.
But I can work around this issue for my application and I only wanted to
give feedback.

Best Regards,
Rainer





Am 14.01.2013 02:02, schrieb Ulrich Klauer:
> 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
> 
> 
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