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I have looked at some literature on using autocorrelation or AMDF for pict
detection/extraction.

If I understand correctly, all these methods have two parts -- firs
construct the functional that can be used to extrac the period/pitc
(AMDF, autocorrelation etc.), second, find peak/null and the associate
lag index to obtain the pitch.

What I need help is how the extraction part is generally implemented (i.e
how to pick the peak/null).

Thanks in advance.




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in article [email protected], bouyang at
[email protected] wrote on 04/01/2005 12:25:

> I have looked at some literature on using autocorrelation or AMDF for picth
> detection/extraction.
>
> If I understand correctly, all these methods have two parts -- first
> construct the functional that can be used to extrac the period/pitch
> (AMDF, autocorrelation etc.), second, find peak/null and the associated
> lag index to obtain the pitch.
>
> What I need help is how the extraction part is generally implemented (i.e.
> how to pick the peak/null).

i guess, think about how you would pick those peaks manually, try to
describe explicitly every decision you make in pick the peak, and then code
it.

> Thanks in advance.

FWIW.

--

r b-j [email protected]

"Imagination is more important than knowledge."