search for: dolby

> > So > > it's closer to Dolby AC-X than to VQ. Unfortunately, I'm not sure that it's > > not patended by Dolby. > > Could you be more specific? More than anything else, we need to know more > about the patent waters we're navigating. > > Monty As Dolby AC-X is using enveloppe of the sound sin...

...News X-Mailer: Mozilla 4.75 [en] (Win98; U) To: monty@xiph.org Subject: liked your article at http://xiph.org/about.html here's an article about the FAAC shut-down. mark lewis news editor news.webnoize.com 626-398-1162 ----- November 21, 2000 technology . formats Pressured by Dolby, Open-Source Audio Developer Takes Down Software by Mark Lewis An open-source audio movement lost a battle last week against the audio technology industry when a non-commercial developer stopped distributing compression software that Dolby and others claim...

Well, in the world of audio compression it's never boring... :-) Full press release from Dolby: http://www.aac-audio.com/press/aac.pr.0104.AACencoder.html My comments: Looks like Dolby will start licensing AAC encoder that targets consumers and the products they use like CD rippers, jukebox players, etc. Also, it looks like that this encoder will be Low Complexity AAC ("The AAC Consume...

As far as I know, LAME is able to mantain the informations stored in some audio files in the lower frequencies, useful for a Dolby pro logic decoder to reproduce a surround sound. Is ogg able to do it? Olaf <olaf@ kjws.com> for every kind of mail, except spam! :-) --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message t...

Read this article on Dolby shutting down Freeware AAC, also Ogg Vorbis and LAME are mentioned as well with some comments from Jack Moffitt. Here is the link (taken from mp3 encoder mailing list): http://news.webnoize.com/item.rs?eID=20001121&ID=11113 Greetings, Aleksandar --- >8 ---- List archives: http://www.xip...

Read this article on Dolby shutting down Freeware AAC, also Ogg Vorbis and LAME are mentioned as well with some comments from Jack Moffitt. Here is the link (taken from mp3 encoder mailing list): http://news.webnoize.com/item.rs?eID=20001121&ID=11113 Greetings, Aleksandar --- >8 ---- List archives: http://www.xip...

On 20030610: Gregory Maxwell wrote: (in reply to Ralph Giles) >> I assume you're aware of the technical documentation on dolby's site? >> (http://www.dolby.com/pro/) In particular the surround mixing guide has >> a lot of detailed guidelines. I don't have any practical experience >> with it though, so I can't vouch for it. >Yes I am. I've done a lot of research to determine the 'co...

...website for libaacplus it clearly says: > These tarballs don't provide any 3GPP source code. It is downloaded > from 3GPP during compilation. To use package compiled by this code, > you may need a license from 3GPP. > > AAC+ codecs incorporate several patents, held by Philips, Dolby, > Ericsson and Nokia. Companies holding patents for HE AAC v1 (SBR) have > formed a patent pool under Via Licensing to provide a single point of > license for product makers. Patents owned by Dolby and Philips > covering the Parametric Stereo used in HE AAC v2 (SBR+PS) are not &gt...

Arc wrote: > However, support for (ie) 48-bit-float should not have to be created, Where are you going to find a 48 bit float? Is there an IEEE standard for that? I know some floating point DSP chips use a 48 bit float internally, but if there is more than one they are unlikely to be compatible and they certainly cannot be read by standard CPUs without having pull each value apart into

http://mp3licensing.com/other/index.html They list: Atrac 3, (E)Pac, AAC ..and various patents of theirs they believe that these formats rely on.. then basically say: "We have not yet determined our licensing policy for this format" Vorbis is not mentioned.. Regards, Tom --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage:

...As yet, noone has stepped forward to support your proposal. Why is that? > Now - channel association/scheme, or whatever a more appropriate name would be.. > this has got to be a lookup table, too. I'm thinking: > 0 Mono > 1 Stereo > 2 Quadraphonic > 3 Ambisonic > 4 Dolby 5.1 > 5 Dolby 6.1 (used in Dolby Digital EX) > 6 Dolby 7.1 > 7 Extended > > This is 3 bits, leaving one bit free for an extra flag, if needed, for one other > bit of configuration which may be needed. We could also extend this to 4 bits, > leaving many of them "Exte...

On Fri Sep 21 16:31:21 2012, Stephen F. Booth wrote: > 6.1: L R C LFE Ls Rs Cs (MPEG 6.1 A layout) I'm confused. WAV puts the rear centre before everything but 'Front left of center' and 'Front right of center'. Are you saying you prefer the extra front channels to to side/rear surround, or that you prefer the MPEG order to the WAVE order? -r

...ed version". Please disregard the old one an reply to this one only. ( you can delete the ATTENTION word from subject ) Wilson (defiler@null.net) wrote : > There are two ways to decode multi-channel audio. In hardware, or in > software. > Hardware: A receiver or processor takes a Dolby Digital (for example) stream > and converts it into something your amps/speakers are interested in. > Software: Your PC decodes a 5.1 audio stream into six discrete audio streams > and passes them to analog output. > > Sound cards that can handle what is described in the second...

Jared (jared@celab21.students.csee.uq.edu.au) wrote : > Saw an article today on /. which reports that Dolby are insisting the > NETBSD dudes remove the ac3dec package from their site. Someone suggested > that we need an open source solution. ac3dec is already open ( GPL ). > Could Vorbis in the Ogg framework be this solution, can we create a pretty > simple 5.1 stream? I _believe_ ogg/vorb...

...hese formats all achieve approximately 2:1 compression without loss of detail. What I would like to know is where to go to find out the details on these formats. Is MLP documented anywhere? It has been accepted as an audio format for DVD-HD, so does that mean it must be openly documented? Dolby Digital AC-3 is documented as part of the HDTV specification, but it cannot be implemented without paying licensing. Well, a programmer could implement it based on the specification, but could not make a product without licensing. Also, what about Apple's Lossless format? Is this part...

...ich when combined with the MSB/LSB flag bit, leaves a nibble for extended types or channel association. Now - channel association/scheme, or whatever a more appropriate name would be.. this has got to be a lookup table, too. I'm thinking: 0 Mono 1 Stereo 2 Quadraphonic 3 Ambisonic 4 Dolby 5.1 5 Dolby 6.1 (used in Dolby Digital EX) 6 Dolby 7.1 7 Extended This is 3 bits, leaving one bit free for an extra flag, if needed, for one other bit of configuration which may be needed. We could also extend this to 4 bits, leaving many of them "Extended" for future minor version...

Hi, As I´ve understood things, the Ogg Vorbis format supports more that two channels (stereo). Is there any tools to encode x sourcefiles into one .ogg file? I am a musican and am thrilled with the ide of makeing music in surround (or in more than stereo). This leads to my next question: is there (developing) any decoders for multichannel oggs to, let us say, 4.1 or 5.1 surround? Wouldn´t it

...t clearly says: > >> These tarballs don't provide any 3GPP source code. It is downloaded >> from 3GPP during compilation. To use package compiled by this code, >> you may need a license from 3GPP. >> >> AAC+ codecs incorporate several patents, held by Philips, Dolby, >> Ericsson and Nokia. Companies holding patents for HE AAC v1 (SBR) >> have formed a patent pool under Via Licensing to provide a single >> point of license for product makers. Patents owned by Dolby and >> Philips covering the Parametric Stereo used in HE AAC v2 (SBR+...

Hi there ! I checked Vorbis' performace for mono files at approx. 64-80 kbps (it does a good job) and I'm wondering why the current OggEnc still uses Point-Stereo (>10kHz) for -q4 and -q5 I know, we're usually unable to percieve those phase correlations above 10 kHz, But a Dolby Prologic Decoder isn't. I think a future version of OggEnc which is able to use a user-selectable stereo mode would be graet. I think back to the time, where everyone just realized that the old L3ENC destroyed phase correlations using intensity stereo and thus being unable to handle dolby sur...

...t clearly says: > >> These tarballs don't provide any 3GPP source code. It is downloaded >> from 3GPP during compilation. To use package compiled by this code, >> you may need a license from 3GPP. >> >> AAC+ codecs incorporate several patents, held by Philips, Dolby, >> Ericsson and Nokia. Companies holding patents for HE AAC v1 (SBR) >> have formed a patent pool under Via Licensing to provide a single >> point of license for product makers. Patents owned by Dolby and >> Philips covering the Parametric Stereo used in HE AAC v2 (SBR+...