[Don Pearce[_3_]]

On Thu, 8 Oct 2009 08:04:57 -0700, "William Sommerwerck"
wrote:

You need to go and have a bit of a think about this. The number
is directly proportional to the pit length. So whether the pit length
represents a number, which in turn represents a voltage, or
represents the voltage directly, the same length errors have the
same final voltage effect.

Not if the length is quantized. It can vary (within limits) and still be
correctly read. This is not true of analog.


For goodness sake - how are you not getting this? If the error in
length is less than your quantization step, then it simply isn't an
error. If it is a much larger error (which is far more likely) then it
doesn't matter whether there is quantization or not - the result is
the same.

The reason digital works is because you store the numbers, not some
variable quantity that represents their magnitude.

d