Dr. Werner Fink schrieb: > On Sat, Jun 11, 2005 at 01:17:11PM +0200, Prakash Punnoor wrote: > >>Dr. Werner Fink schrieb: >> >>>On Sat, Jun 11, 2005 at 12:21:26PM +0200, Prakash Punnoor wrote: >>> >>> >>>>>We already had this disussion with "CD" and the "giant" 90dB >>>>>they claimed to give. >>>> >>>>IIRC, CD gives something like 114db with dithering...and 96db without. >>> >>> >>>Informations which are not recorded can not be recreated without guesssing. >>>Therefore 16 bits are 96db and not more. >> >>Nope, you obviously don't know how dithering works. Every heard of DSD? So you >>think Sony's SACD doesn't work? DSD is pure dithering... > > > -> http://www.hfm-detmold.de/eti/projekte/diplomarbeiten/2004/dsdpcm/23.htm But what do you want to tell me? You are right or me? I am not an audio expert, but if I may quote following, I think it rather backs me up, as AFAIk noise shaping is a form of dithering, too. I understand: 96kHz, 20 bit pcm ~ SACD ~ 96kHz, 16 bit pcm w/ noise shaping So dithering does help to reduce noise levels. Or did I completely misunderstand anything? I am not suggesting to add dither later to a signal, but if you have a 20bit source and dither down to 16bit, you will have a better signal than 16 bit truncated/rounded - which was my original claim. " Von den DVD-A-Bef?rwortern wird die SACD mit ihrer Bandbreite und Dynamik oftmals mit einer DVD-A von 20 Bit und 96 kHz Samplingfrequenz verglichen, welche jedoch den geringen Noise-Floor ?ber die gesamte Bandbreite bis 48 kHz beibehalten kann. Gerne wird dar?ber hinaus betont, dass auch bei der DVD-A aufnahmeseitig Noise Shaping verwendet werden und somit bei einer Quantisierung von nur 16 Bit der Rauschpegel der SACD (bei einem deutlich geringeren Gesamtrauschpegel) m?helos unterboten werden kann. " -- Prakash Punnoor -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: OpenPGP digital signature Url : http://www.linuxtv.org/pipermail/vdr/attachments/20050613/140ec1c7/signature.pgp
