[LAU] Strange sound file

[Eugen Dedu]

M.H. ten Berge wrote:
> Dan S wrote:
>> Hi -
>>
>> If you look at the two outputs below you'll see that newmessage.wav
>> has some extra info embedded in it - possibly newmessage.wav is
>> actually a BWF-format file?
>> http://en.wikipedia.org/wiki/Broadcast_Wave_Format
>>
>> Dan
>>
>>
>> sndfile-info *.wav
>> Version : libsndfile-1.0.19
>> ========================================
>> File : newmessage.wav
>> Length : 23994
>> RIFF : 23986
>> WAVE
>> fmt  : 16
>>   Format        : 0x1 => WAVE_FORMAT_PCM
>>   Channels      : 2
>>   Sample Rate   : 44100
>>   Block Align   : 4
>>   Bit Width     : 16
>>   Bytes/sec     : 176400
>> data : 23868
>> LIST : 74
>>   INFO
>>     ISFT : Sonic Foundry Sound Forge 6.0
>>     IENG :
>>     ICRD : 2005-05-16
>> End
>>
>> ----------------------------------------
>> Sample Rate : 44100
>> Frames      : 5967
>> Channels    : 2
>> Format      : 0x00010002
>> Sections    : 1
>> Seekable    : TRUE
>> Duration    : 00:00:00.135
>> Signal Max  : 32768 (0.00 dB)
>>
>> ========================================
>> File : voicemail.wav
>> Length : 57536
>> RIFF : 57528
>> WAVE
>> fmt  : 16
>>   Format        : 0x1 => WAVE_FORMAT_PCM
>>   Channels      : 1
>>   Sample Rate   : 44100
>>   Block Align   : 2
>>   Bit Width     : 16
>>   Bytes/sec     : 88200
>> data : 57492
>> End
>>
>> ----------------------------------------
>> Sample Rate : 44100
>> Frames      : 28746
>> Channels    : 1
>> Format      : 0x00010002
>> Sections    : 1
>> Seekable    : TRUE
>> Duration    : 00:00:00.652
>> Signal Max  : 32768 (0.00 dB)
>>
>> ========================================
>> Total Duration : 00:00:00.787
>>
>>
>>
> 
> But apart from the advanced metadata, there's a much more fundamental
> difference: the first file listed above is stereo, the second is mono...

The problem is that ring.wav (the same directory, 
http://git.gnome.org/cgit/ekiga/tree/sounds) is also stereo, same sample 
rate, and it works without problem.

-- 
Eugen