From:
>
> 1 bit systems operate in the 3 MHz sampling rate range, not 44.1 kHz.
Internally they do, If not some other rate,3 MHz is not fixed in stone,
but the output is still 44.1 kHz, or whatever sampling rate they are
designed to produce.
> They could be getting the additional dynamic range (120 dB rather than 96 dB)
> by nonlinear conversion. Some of the earlier pre-DAT, pre-CD digital audio
> systems (and the audio system on early 8mm camcorders) used a nonlinear 12
> bit
> system. Essentially these systems say that up in the upper volume levels the
> step from one encoded audio level is small, but that at lower levels the
> steps
> are larger. This yields a wider dynamic range, and hence lower noise floor,
> at
> the risk of audible "stairstepping" in the lower level signals, since the
> larger change from one encoded level to the next is closer to being
> noticeable.
Since, in the case of the Sennheiser 1000, it's a closed digital system
that does not have to produce a digital signal compatible with something
else, it could be using all kinds of non-standard stuff. What counts is
what comes out the far end, which is analog. We can treat the rest as a
black box and judge the far end.
Walt
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