search for: uncouple

Hello, A question: Can we use uncoupled encoding in the 1.0? (current CVS) How? Because I see some uncoupled definitions (books\uncoupled\res_books_uncoupled.h), but I don't know how could I switch to it manually. Perhaps with an option in the vorbis_encode_ctl() function... Because I think so it's better if I don't use any...

...2 minutes of speech from a librevox recording. It managed this at a respectable pace for complexity 10: Skipping chunk of type "LIST", length 76 Encoding using libopus 0.9.14 (audio) ----------------------------------------------------- Input: 44.1kHz 1 channel Output: 1 channel (1 uncoupled) 20ms packets, 6kbit/sec VBR Preskip: 356 Encoding complete ----------------------------------------------------- Encoded: 2 minutes and 0.02 seconds Runtime: 50.9 seconds (2.358x realtime) Wrote: 111194 bytes, 6001 packets, 123 pages Bitrate: 6.78414kbit...

...at > a respectable pace for complexity 10: > > > > Skipping chunk of type "LIST", length 76 > > Encoding using libopus 0.9.14 (audio) > > ----------------------------------------------------- > > Input: 44.1kHz 1 channel > > Output: 1 channel (1 uncoupled) > > 20ms packets, 6kbit/sec VBR > > Preskip: 356 > > > > Encoding complete > > ----------------------------------------------------- > > Encoded: 2 minutes and 0.02 seconds > > Runtime: 50.9 seconds > > (2.358x realti...

...tes of speech from a librevox recording. It managed this at a respectable pace for complexity 10: Skipping chunk of type "LIST", length 76 Encoding using libopus 0.9.14 (audio) ----------------------------------------------------- Input: 44.1kHz 1 channel Output: 1 channel (1 uncoupled) 20ms packets, 6kbit/sec VBR Preskip: 356 Encoding complete ----------------------------------------------------- Encoded: 2 minutes and 0.02 seconds Runtime: 50.9 seconds (2.358x realtime) Wrote: 111194 bytes, 6001 packe...

...n 1.2 diff -u -r1.2 Makefile.am --- lib/books/coupled/Makefile.am 2002/06/28 22:19:44 1.2 +++ lib/books/coupled/Makefile.am 2002/07/13 16:33:25 @@ -2,4 +2,4 @@ AUTOMAKE_OPTIONS = foreign -EXTRA_DIST = res_books_44c.h \ No newline at end of file +EXTRA_DIST = res_books_stereo.h Index: lib/books/uncoupled/Makefile.am =================================================================== RCS file: /usr/local/cvsroot/vorbis/lib/books/uncoupled/Makefile.am,v retrieving revision 1.3 diff -u -r1.3 Makefile.am --- lib/books/uncoupled/Makefile.am 2002/07/03 21:30:05 1.3 +++ lib/books/uncoupled/Makefile.am 20...

...al data frames set up as a time series with identical POSIXct date formats. If I keep the original data in data frame format and merge them using base merge- everything is perfect and everyone is happy. If I transform the data frames to zoo objects, and then do a merge.zoo- the data seem to become uncoupled from the original data. Even more unusual is that some dates in the new merged data set are prior to the original data set. I've attempted bellow to show what this looks like, and I hope someone has a suggestion as to what may be causing the problem. Here is one set of data in data.frame for...

...t bitrate for the encoder would be the same as setting it to OPUS_AUTO, but I'm getting difference results: >opusenc --comp 4 sample.wav sample.opus Encoding using libopus 1.3-rc2 (audio) ----------------------------------------------------- Input: 8 kHz, 1 channel Output: 1 channel (1 uncoupled) 20ms packets, 25 kbit/s VBR Preskip: 312 Encoding complete ----------------------------------------------------- Encoded: 2 minutes and 34.94 seconds Runtime: 1 second (154.9x realtime) Wrote: 588189 bytes, 7747 packets, 157 pages Bitrate:...

...t;> >> >> >> Skipping chunk of type "LIST", length 76 >> >> Encoding using libopus 0.9.14 (audio) >> >> ----------------------------------------------------- >> >> Input: 44.1kHz 1 channel >> >> Output: 1 channel (1 uncoupled) >> >> 20ms packets, 6kbit/sec VBR >> >> Preskip: 356 >> >> >> >> Encoding complete >> >> ----------------------------------------------------- >> >> Encoded: 2 minutes and 0.02 seconds >> >> Run...

Here is the modified patch. I added a flag to configure.ac which is set to 0 to disable ambisonics, and 1 to enable it. Right now the implementation simply creates a surround encoder with N uncoupled streams. Thanks, Michael Graczyk -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xiph.org/pipermail/opus/attachments/20160506/5ba6a372/attachment.html> -------------- next part --------------

Hi Opus list. I subscribed because your discussion on the IETF draft ("Ambisonics in an Ogg Opus Container") was mentioned on the sursound list. I tried Opus for ambisonics more than a year ago. It does works with uncoupled channels (I had to patch the encoder). I don't know what else could be done to optimize support for ambisonics, as I'm not a codec expert. So I think that the easiest (and most important for now) is to disable channel coupling and define the metadata. The allowed number of channels shou...

...don't understand. I think I understand the first half where we decide which channel is larger and swapping them if B is larger than A, etc. If swapping B with A was needed in the decoder, how does the decoder know to swap them back when uncoupling? Secondly, I dont quite get how we can uncouple losslessly if that last if statement were true. That is: if (*qB > fabs(*qA) * 1.9999f) { *qB = -fabs(*qA) * 2.f; *qA = -*qA; } I used some test cases of qA and qB but it seems the uncoupling routine in mapping0.c can't get the original A/B back. Also, I seem to get the...

...st recently found that opus_multistream_encode_float is returning -1 (OPUS_BAD_ARG) with the libopus 1.1 build but works just fine with the libopus 1.0.1 and libopus 1.1-beta builds. I tried using opus_multistream_encoder_create and opus_multistream_surround_encoder_create. Tried with coupled and uncoupled quadraphonic and uncoupled stereo encodes. I'm dynamically loading the libopus libraries from the pre-compiled opusfile-0.5-win32 package. Have there been changes to the meaning or handling of the parameters for either of the mentioned functions?

This patch adds top level functions to create an ambisonic multistream encoder. The implementation currently just calls the analogous surround sound functions with channel mapping 255 to create an encoder that bundles uncoupled streams. Forthcoming patches will actually set channel bitrate and other configuration. My main concern is that adding additional opus_multistream_*_encoder_create/init/get_size functions is unnecessary. Should we instead just add new channel mappings to opus_multistream_surround_encoder_*, despi...

Unfortunately, ambisonics aren't exposed in opusenc yet, thus the trouble. They're an API-only feature, but it's a good time to discuss what such a command-line interface would look like, notably: how to specify multiple streams & stream order, select the mapping family, coupled channels, and how to specify the matrix (for family 3). Likewise, there's no multistream support at

...mentioned on the sursound list. > > Thanks for your interest! Please feel free to voice your support for > this work on the codec at ietf.org mailing list. The more support the > better. I will! > > I tried Opus for ambisonics more than a year ago. It does works with > > uncoupled channels (I had to patch the encoder). I don't know what > > else could be done to optimize support for ambisonics, as I'm not a > > codec expert. > > I agree. We are decoupling channels and setting the bitrate > allocation to give progressively fewer bits to higher o...

...e FAQ says (at its very end): > Does Vorbis support mid/side stereo modes? More than stereo? > > Vorbis has hooks for mid/side stereo and continuous balance stereo, > but the channel mappings for both are yet to be formally specified and > implemented. Currently, Vorbis channels are uncoupled. > This should be updated so that people know how good is Vorbis :) > Vorbis does currently support greater than two channels; the default > multichannel mapping in the 1.0 release supports up to 255 > simultaneous channels. > Does that mean vorbis can be made to support even more?...

...testing the command line based opus encoder/decoder tools and I have some questions regarding the information given by the encoder (see below as an example). Encoding using libopus 1.0.2 (audio) ----------------------------------------------------- Input: 48kHz 1 channel Output: 1 channel (1 uncoupled) 20ms packets, 64kbit/sec VBR Preskip: 312 Encoding complete ----------------------------------------------------- Encoded: 6.86 seconds Runtime: 1e-06 seconds (6.86e+06x realtime) Wrote: 57354 bytes, 343 packets, 9 pages Bitrate: 66.0921kbit/s (without o...

...ing the iommu disabled until iommu_setup() is entered. Originally-by: Ronny Hegewald <ronny.hegewald@online.de> In order for iommu_enable to be off initially, iommu_supports_eim() must not depend on it anymore, nor must acpi_parse_dmar(). The former in turn requires that iommu_intremap gets uncoupled from iommu_enabled (in particular, failure during IOMMU setup should no longer result in iommu_intremap getting cleared by generic code; IOMMU specific code can still do so provided in can live with the consequences). This could have the nice side effect of allowing to use "iommu=off" e...

...trate 56 --vbr "D:\Work\Ulrich\Musik\Vega\FLAC\Audacity\Test-Sweeps\02 Sweep (0 -20kHz at 96kHz) log.flac" "D:\Work\Ulrich\Musik\test.opus" Encoding using libopus 1.3 (audio) ----------------------------------------------------- Input: 96 kHz, 1 channel Output: 1 channel (1 uncoupled) 20ms packets, 56 kbit/s VBR Preskip: 312 Encoding complete ----------------------------------------------------- Encoded: 1 minute and 0.02 seconds Runtime: 1 second (60.02x realtime) Wrote: 749625 bytes, 3001 packets, 63 pages Bitrate: 98...

Hi, I am a Xen newbie and have been trying to get Xen-3.4.1 working on my Ubuntu Lucid (kernel version 2.6.32-21) system, using kernel 2.6.18.8 as dom0. In attempting this, I ran into the following issue. On booting into Xen, I get these errors: Mounting none on /dev failed. No such device. ... Gave up waiting for root device. ... Alert! Could not mount /dev/sda1 as root device. Dropping to a