Soulkeeper;578864 Wrote:
> I don't know the answer to that, but it seems to me that your example
> has a DC bias. If we define origo ("zero") to the middle then the
> signal would probably vary between 128 and -128, or 32 and -32. (Or if
> you define origo ("zero") to be all bits=zero then 128 would be the
> middle (silence), and the signal would vary between 256 and 0, or 160
> and 96.) Or perhaps I misunderstood you completely. :P
It's often easier to have a DC bias from an electronics point of view
as it makes the understanding a tadge easier. However on an 8 bit
system it would be +128 and -127 as the left hand bit represents the
sign bit and +128 to -128 would require 9 bits (the extra to represent
the -sign on an 8 bit word). You are on the right tracks though in your
understanding.
--
Waldo Pepper
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