[SoX-users] First time use of SoX : converting wav to mono 8000Hz

[Jonas K. <jon...@te...>]

Hello list,

hope you can help me out.


2 files :

[root@asterisk testing]# file testExtended.wav
testExtended.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 
16 bit, stereo 44100 Hz
[root@asterisk testing]# file testLong.wav
testLong.wav: RIFF (little-endian) data, WAVE audio, 20294 channels 
1414676809 Hz

to mono :

[root@asterisk testing]# sox testExtended.wav -r 8000 -c1 
testExtended2.wav resample -ql
sox sox: effect `resample' is deprecated; see sox(1) for an alternative
[root@asterisk testing]# sox testLong.wav -r 8000 -c1 testLong2.wav 
resample -ql
sox sox: effect `resample' is deprecated; see sox(1) for an alternative
sox effects: resample clipped 2 samples; decrease volume?

afterwards :

[root@asterisk testing]# file testLong2.wav
testLong2.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 
bit, mono 8000 Hz
[root@asterisk testing]# file testExtended2.wav
testExtended2.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 
16 bit, mono 8000 Hz

But my Asterisk-server can not open them :

[root@asterisk testing]# asterisk -rx "file convert testExtended2.wav 
testExtended2.alaw"
Unable to open input file: testExtended2.wav
[root@asterisk testing]# asterisk -rx "file convert testLong2.wav 
testLong2.alaw"
Unable to open input file: testLong2.wav

The file has decreased in file size :

-rw-r--r-- 1 root root 885K 2010-08-17 08:59 testExtended2.wav
-rw-r--r-- 1 root root 9.6M 2010-08-17 08:57 testExtended.wav



I can play the original and the resampled file perfectly in Gnome 
Mplayer, but my Asterisk-server can not read the file to convert it to 
alaw. Could there be something wrong with the wav-file ?!


Kind regards,

Jonas.