[Flac] flac -- exhaustive model search vs. -A <*>?
pierre-yves.thoulon at centraliens.net
Thu Jun 14 22:09:46 PDT 2012
LPC (Linear Predictive Coding) is a filtering technique whereby the value
of a sample is computed ("predicted") as a weighted sum of the previous
samples. The weights assigned to each previous sample are the coefficients
of the filter, and the number of previous samples considered the order of
x2 = x1 - x0 is an example of such a filter, of order 2, and where the
coefficients are 1 and -1.
If you have the values of x0 and x1, you are able to predict the value of
x2, knowing only the order of the filter, and the coefficients, then that
of x3 from x2 and x1, and so on...
The higher the order of the filter, the more complexity you are able to
match at the signal level.
For more, there are plenty of reference on the internet (you can start
there : http://en.wikipedia.org/wiki/Linear_prediction)
On Thu, Jun 14, 2012 at 11:28 PM, Martin Leese <
martin.leese at stanfordalumni.org> wrote:
> I have not attempted to explain what the LPC
> order actually is because I do not understand
> it well enough
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