Hi, I haven't seen this mentioned here before. http://www.plusv.org/ "With traditional MP3, a typical Near CD Quality audio file has been encoded with a data rate of 128 kbits/s. While this is ok for people with big hard disks and fast Internet connections, this data speed has clearly been a bottleneck for people using modems or storing their music into 32 or 64 MB portable player FLASH cards. PlusV is a brand new audio compression enhancement technology that allows audio files to be compressed in as little as 64 or even 48 kbits/s. PlusV is not a compression scheme of its own, it is an extension that can be applied to existing audio formats. When combined with the MP3 technology, MP3+V files are fully compatible with existing MP3 files and decoders. To get full audio quality out of PlusV files, you just need a PlusV capable decoder, like a PlusV capable WinAmp plugin." // Tuomas --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
> I haven't seen this mentioned here before. > > http://www.plusv.org/No wonder, looks like it has been released today ;) I'm trying to decode a PlusV-encoded file right now... Marcel --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
Tuomas Maattanen [mailto:maattanen@iki.fi] wrote:>Hi, > >I haven't seen this mentioned here before. > >http://www.plusv.org/ > >"With traditional MP3, a typical Near CD Quality audio file has been > encoded with a data rate of 128 kbits/s. While this is ok for people > with big hard disks and fast Internet connections, this data speed > has clearly been a bottleneck for people using modems or storing their > music into 32 or 64 MB portable player FLASH cards. PlusV is a brand > new audio compression enhancement technology that allows audio files > to be compressed in as little as 64 or even 48 kbits/s. > > PlusV is not a compression scheme of its own, it is an extension that > can be applied to existing audio formats. When combined with the MP3 > technology, MP3+V files are fully compatible with existing MP3 files > and decoders. To get full audio quality out of PlusV files, you just > need a PlusV capable decoder, like a PlusV capable WinAmp plugin." >you forgot to include this: <quote> Patents - PlusV has a patent pending for its underlying technology. Openness of PlusV - In contrast to some other low bit-rate audio formats, PlusV will be almost completely open for anyone to use. </quote> Patents on software blows goats. It is NOT completely open and it (appears) to rely on an already encumbered technology (mp3). I do not expect that its high-frequency encoding operation. <quote> Openness means that the full specification for the format will be available for anyone to download for free. Also example reference software for encoding and decoding is available both as Windows binaries and platform independent source codes (with a slight slant on the Unix side). Software developers are allowed to use the format freely. The only thing we ask is that they would register a license through our standard register form. The software license is free, and will stay so. </qoute> This _appears_ to be good but I don't see a _legal_ declaration that this software licence cannot be revoked or modified by the issuer without consent of the issuee. There is NO statement that the license is BSD'd or GPL'd or LGPL'd or xxx'd! <qoute> Manufacturers willing to license PlusV technology to their existing codecs will have to pay a moderate license fee. </quote> The hardware market has proven itself slow to embrace mp3pro (another pay to use format) and is still slow to embrace .ogg which BSD'd and _is_ free. This format will not be able to penetrate the market any better than mp3pro regardless of its technical advantages. Myles --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
On 2001.10.17 13:29:09 +0200 Tuomas Maattanen wrote:> Hi, > > I haven't seen this mentioned here before. > > http://www.plusv.org/ > > "With traditional MP3, a typical Near CD Quality audio file has been > encoded with a data rate of 128 kbits/s. While this is ok for people > with big hard disks and fast Internet connections, this data speed > has clearly been a bottleneck for people using modems or storing their > music into 32 or 64 MB portable player FLASH cards. PlusV is a brand > new audio compression enhancement technology that allows audio files > to be compressed in as little as 64 or even 48 kbits/s. > > PlusV is not a compression scheme of its own, it is an extension that > can be applied to existing audio formats. When combined with the MP3 > technology, MP3+V files are fully compatible with existing MP3 files > and decoders. To get full audio quality out of PlusV files, you just > need a PlusV capable decoder, like a PlusV capable WinAmp plugin." >Is it open source? I can't find the license. --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
I hate when I words out. the text of my message: 'I do not expect that its high-frequency encoding operation.' should read I do not expect that its high-frequency encoding operation will be worth the mp3 licencing fiasco it is attached to. <giant snip> --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
On Wed, Oct 17, 2001 at 02:29:09PM +0300, Tuomas Maattanen wrote:> Hi, > > I haven't seen this mentioned here before. > > http://www.plusv.org/
On Wed, Oct 17, 2001 at 02:29:09PM +0300, Tuomas Maattanen wrote:> Hi, > > I haven't seen this mentioned here before. > > http://www.plusv.org/BTW, I tried posting a few questions on their forum board, but it appears to be broken; it won't accept any of my posts (just gives a blank page). I sent 'em mail. Monty --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
I can't even see what all the fuss is about. From what i understood of their technical explanation, practically everything above 11 khz is white noise; almost no signal at all. This sounds a little reminiscent of PNS in AAC, except it's applied haphazardly to fully ½ of the spectrum, with almost no regard to whether the signal is perceived as tonal or noise-like,as in AAC. Throw in a few spare sines and call it good. Doesn't sound worth bothering with, to me. Plus, how many piggybacks to an outdated and limited format like MP3 can we see? How many decoders will we see, each supporting only one add-on format? How'll we even tell just what kind of nonstandard data the mp3-file contains? And enough of touting 128kbps performance at 64 kbps! My opinion (and I feel safe in assuming most on this list would concur) that the sound of MP3 at 128 kbps is not acceptable to start with. Me, I just ignore all this bullshit, and look to the future for better ways of reducing bitrate while retaining meaningful info. This is where Vorbis comes in. I think its channel coupling is pretty bloody impressive, even if a good deal of the technical explanation is over my head. And I'm eagerly looking forward to the inclusion of wavelets after the 1.0 release. That'll be nothing to sneeze at. Besides - just listen to it. At 80 or even 64 kbps. Not bad, eh? But I must always remember - bullshit makes the flowers grow, & that is beautiful. EDB. BTW, as Vorbis is patent-free, this might be a good place to bring this up... Is PNS, as used in AAC, covered by patents? How about the prediction methods it uses (although i really know nothing of what they are or how they work)? --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.