Anybody knows this?

[praudada]

Hello?
I've found something weired ...
When i set the file extension of call record file as .WAV (upper case)
the file sizes  are very smaller than lower case .wav

Can anybody explain the why?

[QueueMetrics]

I think so: http://www.voip-info.org/wiki/view/Convert+WAV+audio+files+for+use+in+Asterisk