Which vocoder should I use?

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I have a choice (I have my MSL available) of IS-96A, EVRC, EVRC-B, Voice 13k, SMV, Voice 13k - IS733, and IS-96.

Which one should I use for best voice quality?

from my limited knowlege on vocoders, I believe this is correct EVRC is 3G, IS96 is 2G, and 13k Voice is analog...

EVRC, SMV, EVRC-B, and all fall into this catagory, EVERC-B being the successor and is a 3G codec

IS-96, IS-96A fall into this catagory IS-96A being the successor and is a 2G codec

Voice 13k, and Voice 13k- IS733 fall into this catagory IS733 being the successor.

my guess is that EVRC-B is your best bet, but also use trial and error, try the successor of each catagory and post back with results, I'm curious as to what you will find.

Nothing except evrc works with airave, but 13k seemed to sound better.