[CELT-dev] Opus for audiobooks etc

Timothy B. Terriberry tterribe at xiph.org
Thu Nov 17 15:42:01 PST 2011

> OK, I hadn't realized that the higher-delay SILK modes were only saving
> on frame and packet/transport overhead; I'd assumed that they'd be
> getting some kind of prediction benefit.

They do. The quantization gains and pitch lag are both predicted across 
the full 60 ms frame, but at 32 kbps this represents a relatively small 
bitrate savings.

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