VQF: Difference between revisions

From Hydrogenaudio Knowledgebase
(move to --> Category:Codecs)
(→‎Links: Removed Dead Url Links .)
 
(One intermediate revision by one other user not shown)
Line 10: Line 10:


Yamaha discontinued offering their SoundVQ software line after the obvious failure of the format in becoming popular.
Yamaha discontinued offering their SoundVQ software line after the obvious failure of the format in becoming popular.
==Links==
[http://www.twinvq.org/english/index_en.html NTT's TwinVQ page]
[http://www.rjamorim.com/rrw/nttvqf.html NTT TwinVQ encoder at ReallyRareWares]
[http://www.rjamorim.com/rrw/soundvq.html Yamaha SoundVQ encoder at ReallyRareWares]




[[Category:Codecs]]
[[Category:Codecs]]

Latest revision as of 22:51, 17 December 2012

TwinVQ is an audio encoding technology developed at NTT (Nippon Telephone and Telegraph). It uses an unique technology called Vector Quantization (VQ) for encoding.

The format using the TwinVQ technology is called VQF. There are several limitations in this format: 2 channels at most, no VBR, extremely slow, few support. It can pretty safely be considered dead these days.

TwinVQ, on the other hand, is still alive as part of the MPEG4 audio standard, being featured at extremely small bitrates (8-16kbps).

At some point during late nineties, Yamaha bought the VQF technology from NTT and created their own encoder, SoundVQ.

It has features like batch encoding and recording from line-in. Quality in high quality mode is reasonable, but encoding is extremely slow. Also, it only works for 90 days then expires.

Yamaha discontinued offering their SoundVQ software line after the obvious failure of the format in becoming popular.