[Mp4-tech] AMR codec (ETSI and 3GPP version)

Murphy Chen murphychen mail2000.com.tw
Fri Jan 9 13:38:52 EST 2004


ETSI has a version of AMR codec.
3GPP also has a version of AMR codec for both fix-point and floating-point.
>From the document writing style, it seems that 3GPP version is derived from ETSI version, and is more modularized.
But I wonder:
Which one is more standard compliant?
And which one is more efficient?
Thanks,
Murphy


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