i wrote:
the *major* component of audible noise is coming from the numerical processes
inside the codec
On 7/23/15 12:43 PM, Peter S wrote:
Seriously, where do you get that from?
well, i take it that the answer to the question i asked is "no".
so there are a few docs on the web like at
http://www.analog.com/media/en/training-seminars/tutorials/MT-022.pdf ,
but they're not necessarily all that good.
i s'pose i should be more precise. the *major* component of audible
noise is coming from the severe quantization that occurs at the 1-bit
converter in the sigma-delta modulator. but the digital processing that
follows to filter and decimate (which also increases the word width from
1 bit to something much wider) are the numerical processes that follow
the 1-bit converter. it is in this process that you start to see a
recognizable waveform with a noisy component added to it.
Do you realize that 'dithering' basically means: adding noise?
to what end? why do you think they would they be adding that noise?
how would that help?
--
r b-j r...@audioimagination.com
"Imagination is more important than knowledge."
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