It is proprietary and the details have not been published. However, there
are
several technical publications from early in TwinVQ development (I have
them)
describing the basis of TwinVQ and there's TwinVQ reference code in the
MPEG-4
reference distribution.
According to the paper
According to the paper available(quite interesting), it seems that VQF is
the 2nd release of TwinVQ.
Possible. I lost direct touch with its development in '96.
note: vector quantization, in picture or music, is good for low bitrates, as
it produces some good results. However, using only
Hello.
TwinVQ is a technology by NTT, I thought, and VQ means vector quantazation.
Threrefore, YAMAHA's SoundVQ may be same as TwinVQ.
Please check out following URIs.
http://www.wnn.or.jp/wnn-sound/twinvq/index.html
http://www.yamaha.co.jp/xg/SoundVQ/
HTH.
on 99.11.25 4:05 PM, Ampex
AFAIK VQF is absolutely proprietary and owned by Yamaha. There is no
technical information available whatsoever.
It is proprietary and the details have not been published. However, there are
several technical publications from early in TwinVQ development (I have them)
describing the basis of
TwinVQ is a technology by NTT, I thought, and VQ means vector quantazation.
"Transform Weighted Interleave Vector Quanization". I studied under Dr. Furui
of the Human Interfaces lab when I was a graduate student in Japan and got
demos of TwinVQ while they were still developing it :-)
It was
Here's something from Eric Scheirer's FAQ @
http://sound.media.mit.edu/~eds/mpeg-patents-faq
29. Is Yamaha's TwinVQ part of MPEG-4?
The TwinVQ technology was integrated with the AAC technology and
some other new things to form the MPEG-4 GA tool. A .VQF file
is not a legal MPEG-4 bitstream.
RE: [MP3 ENCODER] twinvq
this is a completely mp3 listserv, but in case any of you
dont know about twinvq, its another natural audio codec with
better frequency response than mp3 at the same bitrate.
http://www.vqf.com, http://www.vqcentral.com, and channel
#vqf on the DALnet IRC
VQF doesnt seem related to MP3 and/or AAC in many respects. It can fully
represent all frequencies up to 20KHz at 96kbits/sec. It may be a
proprietory codec, but it is still in development by both NTT and Yamaha.
Ahead (www.ahead.de) is also developing a media player that supports VQF, as
they
