[opus] Opus VS. EVS and AAC-ELD

[mo]

Hello,

I am really curious about something. How does the quality of Opus compare
to alternative VoIP codecs like AAC-ELD V2 and EVS? I heard that the use of
ACELP in EVS and AAC-ELD offers a slight improvement in low bit rate
performance relative to Opus but then I also heard that the improvement is
insignificant.

Thanks for taking the time to read my question.

-- 
mo
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