David
you are the man to ask this one

Why do (or why do you think) relatively benign companding algorithms 
like Alaw, uLaw,  that are commonly used for encoding for VOIP links for 
radio systems (and other) , sounds so awful when they pass AMBE/ AMBE2  
etc processed speech ?

Must be something to do we the re distribution of the quantizating noise 
characteristics?

Not sure what the effect is yet with codec2, but that would be a cinch 
to test up.


g




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