[opus] Opus Tools -- low bitrates, new features in 1.5, "expect-loss"

[Jan Stary]

On Aug 07 10:08:43, petrparizek2000 at yahoo.com wrote:
> > What sine sweep exactly?
> 
> An exponential sweep. It started slightly below 24 Hz and ended almost at 24
> kHz. And it was 50 seconds long.
> 
> > How did you obtain it,
> 
> I used Angelo Farina's "Aurora" modules. One of them is called "Generate
> sine sweep".

Can you please make that sound file available?
It is hard to tell without having anything.
(50s of sines shouldn't be large.)

> > and how exactly did you encode and decode it?
> 
> 1) Opusenc --bitrate 12 --downmix-mono Sweep50.wav Sweep50.opus
> 2) Opusdec --float Sweep50.opus Sweep50out.wav