[vorbis] 16 KHz clip-off?

ORK korsmo at solungen.hm.no
Tue Aug 14 08:25:30 PDT 2001



I don't usually go as low as 128...but I did tests at every bit-rate and 
also experienced that frequency fall off in files encoded at ~128...

ORK

At 13:49 14/08/01 +0200, you wrote:
>Hello,
>
>congratulations to the Ogg Vorbis team - RC2 sounds good.
>But... RC2 in 128 kbps mode seems to clip off all frequencys
>beyond 16 KHz. On the tracks I tested Beta 4 gave response
>even beyond 18 KHz.
>
>Some testings on a randomly chosen track:
>(other tracks gave similar results)
>
>Artist: Judas Priest
>Album: Jugulator
>Title: Bullet Train
>
>Beta4: 127 kbps, ~ 18 KHz (!)
>   RC2: 132 kbps (!), ~ 16 KHz
>
>This seems even more strange to me as RC2 benefits from channel
>coupling...
>
>BTW: As 128 kbps mode produces average bitrates higher than 130 kbps
>(please keep in mind that I am testing with Heavy Metal music, so
>results for Britney Spears and Back Street Boys may vary ;-) )I would
>be happy if 112 kbps mode is back in RC 3...
>
>bye,
>
>Maik Merten
>
>--
>   MetalUnleashed: http://www.metalunleashed.de
>DHTML-Bibliothek: http://www.fortunecity.de/wolkenkratzer/flick/403
>              ICQ: 45648209
>
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