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Article #996Re: MP3 Vs ATRAC : Which is worse ?
From: Arny Kr�ger
Date: Fri, 05 Feb 1999 00:00
Date: Fri, 05 Feb 1999 00:00
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jj, curmudgeon and tiring philalethist wrote in message ... >In article <AKHu2.3415$ob2.4836@news.flash.net>, >Arny Kr�ger <arnyk@flash.net> wrote: >>VQF is Yamaha's perceptual coder. See http://www.vqf.com/ . >Seeing as it uses an NTT encoder, I assume that VQF is a cognate >of the TWIN-VQ algorithm that was tested at MPEG-4 vs. AAC. > >TWIN-VQ offers some advantages at rates of 8kb/s for VERY low >rate, very dirty audio, if I remember the results correctly, >but in fact does not do as well as AAC at bit rates above about 24 kb/s, >or maybe it was 16 kb/s. There was also a problem, if I recall, with >stereo using TWIN-VQ, based on the fact its scalefactor model can't >support sudden changes in scalefactor such as those that come about >when doing switched M/S coding. My "finger in the wind" says that VQF is coming off like flash in the pan. Time will tell!
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X-Google-Language: ENGLISH,ASCII X-Google-Thread: 109f11,8f9482d021558bd9 X-Google-Attributes: gid109f11,public X-Google-Thread: 10d85e,8f9482d021558bd9 X-Google-Attributes: gid10d85e,public X-Google-Thread: fb1f8,8f9482d021558bd9 X-Google-Attributes: gidfb1f8,public X-Google-Thread: 105a81,8f9482d021558bd9 X-Google-Attributes: gid105a81,public From: "Arny Kr�ger" <arnyk@flash.net> Subject: Re: MP3 Vs ATRAC : Which is worse ? Date: 1999/02/05 Message-ID: <6wKu2.3638$ob2.6945@news.flash.net> X-Deja-AN: 441161134 References: <77bvje$q3o$3@justice.csc.cuhk.edu.hk> <79desg$9gh$1@ash.prod.itd.earthlink.net> <F6p074.9n5@research.att.com> <AKHu2.3415$ob2.4836@news.flash.net> <F6p8Dw.DMt@research.att.com> X-MimeOLE: Produced By Microsoft MimeOLE V4.71.1712.3 X-Complaints-To: abuse@flash.net X-Trace: news.flash.net 918254722 208.194.215.85 (Fri, 05 Feb 1999 16:45:22 CDT) Organization: FlashNet Communications, http://www.flash.net NNTP-Posting-Date: Fri, 05 Feb 1999 16:45:22 CDT Newsgroups: rec.audio.tech,rec.audio.opinion,rec.audio.misc,hk.rec.audio-visual