Displaying 20 results from an estimated 1000 matches similar to: "Some listening test results"
2013 Jul 26
0
[codec] Some listening test results
Hi Christian,
Thanks for publishing this. Do you happen to have some numbers on
what the expected bit error rates are for a "typical AMR-WB usage
scenario"?
I'm curious about that because you note that the Opus bitstream
wasn't designed to be inherently robust against a bit error at
any point in the packet (and some places will obviously effect
it worse than others) - however
2013 Jul 26
0
Some listening test results
On 07/26/2013 10:36 AM, Christian Hoene wrote:
> Hi,
>
> a first set of results can be downloaded here
>
> http://trac.tools.ietf.org/wg/codec/trac/wiki/TestingResults
>
> More will be added soon.
>
> Thanks to Patrick Schreiner and Alfons Martin, who did the tests.
>
>
>
> With best regards,
>
>
>
> Christian Hoene
Christian,
Thanks for sharing
2016 Jun 10
0
Patches for adding 120 ms encoding
Hi Felica,
yes, this is the only reason to have larger frames is on bandwidth limited links having a gross (physical) bit rates of 10kbps per channel.
Decades ago I calculated with figure (for AMR-NB but the same holds for Opus).
https://www.tkn.tu-berlin.de/fileadmin/fg112/Hard_Software_Components/Software/hoene_07_2004_paper.pdf
Von: Felicia Lim [mailto:flim at google.com]
2016 Apr 19
0
Channel Mapping Family for Ambisonics
Hi,
Ambisonics are good for the recording but what is about the playback?
In addition to an Ambisonic channel mapping, isn't it worthwhile to think about
some object based audio coding, too?
But then again, that would be much more work than just adding a new channel
mapping.
Christian
> Michael Graczyk <mgraczyk at google.com> hat am 18. April 2016 um 04:29
>
2013 Dec 17
2
1.1 Much slower on Raspberry Pi
Christian,
I will give 64kbit/s a try and post the figures. My own project is voice
only and requires low bitrate so was hoping that it was just the way I was
compiling and not an actual regression in speed for SILK. The raspberry PI
is quite a cheap and handy reference platform though the ARM side is fairly
underpowered but has a great GPU. It also has no audio in which is a pain
for playing
2013 Sep 05
2
Enquiry into .Opus Audio Quality
2013 Dec 17
0
1.1 Much slower on Raspberry Pi
Resampling to 48khz speeds them both up but the disparity is about the
same: 2.609 to 3.69.
Best Regards,
Stuart Marsden
On 17 December 2013 17:04, Stuart Marsden <stuartmarsden at finmars.co.uk>wrote:
> Christian,
>
> Complexity 0, 6kbps:
>
> 0.9.14 Speed 5.204
> 1.1 Speed 5.218
>
> A slight win on that run but they vary enough to say about the same. At
>
2013 Oct 04
1
ODG (Objective Difference Grade) scores for Opus Encoder using PQEvalAudio Tool
Hi Rhishi,
PQevalaudio is very unreliable and buggy. I have compared to PEAQ and - as a
result - now I am not using it anymore.
With best regards,
Christian Hoene
Von: opus-bounces at xiph.org [mailto:opus-bounces at xiph.org] Im Auftrag von
Rhishikesh Agashe
Gesendet: Freitag, 4. Oktober 2013 12:35
An: opus at xiph.org
Cc: Rasmi Mishra
Betreff: [opus] ODG (Objective Difference
2013 Oct 04
0
ODG (Objective Difference Grade) scores for Opus Encoder using PQEvalAudio Tool
In that case, can you please suggest a reliable tool?
Thanks,
Rhishi
From: Christian Hoene [mailto:christian.hoene at symonics.com]
Sent: Friday, October 04, 2013 17:30
To: Rhishikesh Agashe; opus at xiph.org
Cc: Rasmi Mishra
Subject: AW: [opus] ODG (Objective Difference Grade) scores for Opus Encoder using PQEvalAudio Tool
Hi Rhishi,
PQevalaudio is very unreliable and buggy. I have compared
2016 Jun 02
3
Patches for adding 120 ms encoding
On 06/01/2016 02:06 PM, Felicia Lim wrote:
> That was my intention with refactoring out the subframe encoding and
> repacketizing bit. Or do you mean I should merge the explicit check for
> 120 ms frame and the existing checks for 40/60 ms wideband?
What I mean is that this line in opus_encoder.c:
if (frame_size > st->Fs/50 && (st->mode == MODE_CELT_ONLY ||
2013 Oct 04
3
ODG (Objective Difference Grade) scores for Opus Encoder using PQEvalAudio Tool
Hi,
I checked the ODG (Objective Difference Grade) scores for a few reference vectors using the PQEvalAudio Tool and found that some of them show ODG scores as high as -3.5
If we look at the range as described in the link below, it looks unacceptable.
http://www-mmsp.ece.mcgill.ca/documents/Software/Packages/AFsp/PQevalAudio.html
Am I missing something or are these scores valid?
Thanks and
2016 Apr 18
5
Channel Mapping Family for Ambisonics
Hello,
We (Google) have been experimenting with configuration and adjustments to
CELT-only Opus that give good results for compressing ambisonic audio
signals [1]. Based on our results so far, we would like to use Opus to
encode spatial audio. We hope to make it easy/possible to use libopus with
other common tools and software modules (ffmpeg/libav in particular).
Based on my reading of the
2013 Dec 16
4
1.1 Much slower on Raspberry Pi
I have just started trying Opus with a view to using it in a project. I am
interested in embedded hardware and tried it on the Raspberry Pi using the
raspbian distro.
The version of libopus in the repos is 0.9.14. I installed this and tried
encoding 2 minutes of speech from a librevox recording. It managed this at
a respectable pace for complexity 10:
Skipping chunk of type "LIST",
2008 Mar 10
1
(no subject)
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2017 Apr 18
3
R 3.4 has broken C++11 support
Hi,
This commit (I?m using the mirror to have a working link) broke C++11 compilation.
Before (and still now, according to the comments in the configure script), it?s sufficient to just have ?SystemRequirements: C++11? in the DESCRIPTION file.
But now ?R CMD install? fails with ?C++11 standard requested but CXX11 is not defined?, which is, according to the documentation , a lie.
I can?t
2017 Apr 19
5
R 3.4 has broken C++11 support
Hi!
Well, my linux distribution has very recent versions
of everything, so a working C++11 compiler exists:
$ gcc --version | head -n1
gcc (GCC) 6.3.1 20170306
Could wrong ./configure options be at fault here? See:
https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=r-devel#n40
My sessionInfo():
$ R-devel --slave -e 'sessionInfo()' | head -n3
R Under development (unstable)
2017 Apr 19
4
R 3.4 has broken C++11 support
Hi Dirk and Martyn,
> That looks fine. Can you please give a reproducible example of a package
> that compiles correctly on R 3.3.3 but not with R 3.4.0 or R-devel.
here you go, it?s pretty much the simplest package possible that needs C++11:
https://github.com/flying-sheep/cxx11test
> Maybe you can share with us how you configure the build of R-devel?
Sure, in the mail you quoted, I
2015 Dec 01
6
snapshot of running vm's
Hi,
i'd like to create snapshots of my running vm's. I have several hosts with
SLES11 SP4 64bit. I use libvirt 1.2.5-7.1 . VM's are Windows 7, SLES,
Ubuntu, Opensuse.
I use raw files for the vm's.
I try to orientate myself by
http://wiki.libvirt.org/page/Live-disk-backup-with-active-blockcommit .
The hosts are backuped every night by a network based backup solution
(Legato).
My
2015 Dec 03
3
Re: snapshot of running vm's
> -----Oorspronkelijk bericht-----
> Van: Lentes, Bernd [mailto:bernd.lentes@helmholtz-muenchen.de]
> Verzonden: donderdag 3 december 2015 13:54
> Aan: libvirt-ML
> CC: Dominique Ramaekers
> Onderwerp: RE: snapshot of running vm's
>
> > ...
> > >
> > > Hi,
> > >
> > > i have inserted:
> > >
> > > <channel
2001 Jul 27
4
ext3-2.4-0.9.4-246ac5 problem...
I've updated today the version of ext3 on my laptop
(from 0.9.3 to 0.9.4) and I am unable to boot anymore
(hand copy below):
VFS: Diskquotas version dquot_6.5.0 initialized
Journalling Block Device driver loaded
Invalid operand: 0000
CPU: 0
EIP: 0010:[<c01256bf>]
...
...
...
Kernel panic: attempted to kill init.
Since this is my / fs, I am unable to boot anymore (and of course