[Speex-dev] Same bitrates on narrowband for quality 3/4, 5/6, 7/8?

[Jean-Marc Valin]

Hi,

Quality settings 3/4, 5/6 and 7/8 are *exactly* the same as they map to
the same mode internally. The reason for that is simply that a 0-10
scale for quality is convenient, but for narrowband (unlike wideband),
there are only 8 modes available, so some must be repeated.

	Jean-Marc

Le lundi 27 mars 2006 à 14:55 -0500, Sol Young a écrit :
> Hi all,
> 
> When encoding narrowband with speexenc I notice the bitrate is the same for
> qualities 3 / 4, 5 / 6, and 7 / 8 (8000, 11000, and 15000 respectively).  I
> didn't test this on prior versions of the encoder so I'm not sure if this is
> something new, but am curious if there is a difference between the above
> respective settings (does quality 4 yield better results on narrowband than
> quality 3 despite being the same bitrate?  Or are they defaulting to the
> same rate?)
> 
> Thanks,
> Sol Young
> 
> _______________________________________________
> Speex-dev mailing list
> Speex-dev at xiph.org
> http://lists.xiph.org/mailman/listinfo/speex-dev
>