[vorbis-dev] vorbis.com

Steve Underwood steveu at coppice.org
Sun Dec 31 18:33:19 PST 2000

Monty wrote:

> On Sat, Dec 30, 2000 at 02:47:52PM -0800, OmegaDan wrote:
> > Question about dynamic range ...
> >
> > Is the 1bit = 6db rule hard and fast ?
> In linear PCM, yes.  A factor of two is roughly 6dB, and one bit
> doubles the [linear] dynamic range.
> > I've been shopping around for 24/96
> > cards to use in my project studio, and the best cards seem to be only able
> > to achieve a dynamic range of 116db (and most are more like 100 - 110) ...
> > shouldn't it be 24bits * 6 db = 144db ?
> Yes.  Your ears are going to be damaged by trying to take in greater
> than roughly 120 dB range at once anyway.

Also, no current microphone technology can really get beyond that, for thermal
noise reasons. The highest quality mics and mixing desks can only offer about


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