[CELT-dev] drawback when using very small frame sizes ?

Gregory Maxwell
2011-01-19T19:11:03Z

On Wed, Jan 19, 2011 at 1:41 PM, Marko <celt at platax.de>
wrote:
> hi Jean-Marc,
> thanks for your answer.
>
> 1.
> Can you give a rough estimation for the quality decrease, maybe in
percentage of required bit rate ?
>
> 2.
> Is there a tool to meassure quality of a codec like CELT ?

PEAQ.  E.g. PQEvalAudio in
http://www-mmsp.ece.mcgill.ca/documents/Downloads/AFsp/

There are PEAQ results on testing pages for some of our prior releases:
http://celt-codec.org/testing/test.0.6.0.shtml.en


However, it appears PEAQ understates the harm of smaller frame sizes
somewhat so take that with a healthy grain of salt.