opus - Aug 2024 - Opus Tools -- low bitrates, new features in 1.5, "expect-loss"

> 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".

 > 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

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Petr

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