Displaying 9 results from an estimated 9 matches similar to: "Opus vs AAC (endurance test)"
2017 Nov 16
0
Opus vs AAC (endurance test)
Opus is specifically designed to survive tandeming but you need to keep the
frames aligned and not mess with the gain, which your tools probably do not
do.
On Thu, Nov 16, 2017 at 10:58 PM, encrupted anonymous <
sergeinakamoto at gmail.com> wrote:
> using iTunes i've noticed that AAC is
> very good at re-encoding own lossy sound.
> let's test Opus!
>
> neroaacenc.exe
2017 Oct 18
3
OPUS vs MP3
Good morning.
I've ran a test against MP3 format.
Code: (first convert tested audio file to 16 bit 48khz with sox.exe if
needed)
lame.exe -b 320 48khzfilein.wav -o fileout.mp3
lame --decode fileout.mp3 -o fileout.mp3.wav
opusenc.exe --bitrate 320 48khzfilein.wav fileout.opus
opusdec.exe fileout.opus fileout.opus.wav
wavdiff.exe 48khzfilein.wav fileout.mp3.wav -diff fileout.mp3.delta.wav
2017 Oct 31
3
OPUS vs MP3
Jean-Mark sarkasm.
Jean-Markasm.
(Bonus points for providing an actual noisy WAV! ^_^)
On 30/10/2017 20:28, Jean-Marc Valin wrote:
Hi,
Before I comment on the graphics you posted to visualize the difference
between two audio signals, I'd like to ask for your help in evaluating
my JPEG encoder. I've encoded an image with JPEG and then computed the
difference with the original. I then
2017 Oct 30
0
OPUS vs MP3
Hi,
Before I comment on the graphics you posted to visualize the difference
between two audio signals, I'd like to ask for your help in evaluating
my JPEG encoder. I've encoded an image with JPEG and then computed the
difference with the original. I then converted the difference to sound.
You can listen to the image difference on this clip:
https://jmvalin.ca/misc_stuff/diff.wav
Can you
2017 Oct 31
0
OPUS vs MP3
Just to be clear, my goal here wasn't to make fun of anyone, but to
drive the point that spectrograms should *never* be used to demonstrate
quality. The only case where they can sometimes be useful is for
diagnostic purposes. If you hear something and you're not sure what
you're hearing exactly, then sometimes a spectrogram can help you figure
out what it is. That's pretty much it.
2017 Oct 31
3
Antw: Re: OPUS vs MP3
Hi guys,
as MP3 and Opus have very similar objectives, I think the original poster's
question was a valid one: Why does Opus have more artefacts in the lower
frequency ranges than MP3 has? The spontaneous suspect that lower frequency
artefacts may be more noticeably than higher frequency artefacts seems
plausible, also. Is it a matter of energy (which is higher for higher
frequencies)?
When
2011 Apr 09
0
Endurance is the brain, YouSheng is better.
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2004 Aug 11
1
Fwd: Enduring LME confusion… or Psychologists and Mixed-Effects
In my undertstanding of the problem, the model
lme1 <- lme(resp~fact1*fact2, random=~1|subj)
should be ok, providing that variances are homogenous both between &
within subjects. The function will sort out which factors &
interactions are to be compared within subjects, & which between
subjects. The problem with df's arises (for lme() in nlme, but not in
lme4), when
2004 Aug 10
4
Enduring LME confusion… or Psychologists and Mixed-Effects
Dear ExpeRts,
Suppose I have a typical psychological experiment that is a
within-subjects design with multiple crossed variables and a continuous
response variable. Subjects are considered a random effect. So I could model
> aov1 <- aov(resp~fact1*fact2+Error(subj/(fact1*fact2))
However, this only holds for orthogonal designs with equal numbers of
observation and no missing values.