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From: Alfred Bovin on 6 May 2010 08:16
>>>Steve, were you having a senior moment? :) X(f)*X*(f) is always non-
>>>negative.
>>
>> Well you have to drill down a bit more.
>>
>> X(t) -> window -> sum(X(t)-(X(t-u)) -> window -> cosine transform ->
>> some non-positive-values. Depending on signal and window.

>[1] Marple, S.L., Jr., �A tutorial overview of modern spectral
>estimation�,
>Acoustics, Speech, and Signal Processing, volume 4, 23-26,
>Page(s):2152 - 2157, May 1989
>available at:
>http://www.cactus.org/~benjamin/X/marple.pdf

Thanks for the link. That looks like a nice read.


From: Randy Yates on 6 May 2010 09:28
dbd <dbd(a)ieee.org> writes:
> [...]
> [1] Marple, S.L., Jr., “A tutorial overview of modern spectral
> estimation”,
> Acoustics, Speech, and Signal Processing, volume 4, 23-26,
> Page(s):2152 - 2157, May 1989
> available at:
> http://www.cactus.org/~benjamin/X/marple.pdf

Dale, I'm with Alfred - thanks for the paper. It does look like a great
refresher/tutorial.
--
Randy Yates % "Remember the good old 1980's, when
Digital Signal Labs % things were so uncomplicated?"
mailto://yates(a)ieee.org % 'Ticket To The Moon'
http://www.digitalsignallabs.com % *Time*, Electric Light Orchestra
From: Phil Martel on 8 May 2010 12:08

"Randy Yates" <yates(a)ieee.org> wrote in message
news:m3ljbxf9bb.fsf(a)galois.digitalsignallabs.com...
> dbd <dbd(a)ieee.org> writes:
>> [...]
>> [1] Marple, S.L., Jr., "A tutorial overview of modern spectral
>> estimation",
>> Acoustics, Speech, and Signal Processing, volume 4, 23-26,
>> Page(s):2152 - 2157, May 1989
>> available at:
>> http://www.cactus.org/~benjamin/X/marple.pdf
>
> Dale, I'm with Alfred - thanks for the paper. It does look like a great
> refresher/tutorial.
> --
> Randy Yates % "Remember the good old 1980's, when
> Digital Signal Labs % things were so uncomplicated?"
> mailto://yates(a)ieee.org % 'Ticket To The Moon'
> http://www.digitalsignallabs.com % *Time*, Electric Light Orchestra
Yes, thank you.

Best wishes,
--Phil Martel


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