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Comp.dsp is a worldwide Usenet news group that is used to discuss various aspects of digital signal processing.
There are 16913 threads in our archives.
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does FFTW break when subjected to multiple simultaneous requests? [9 articles]
all4dsp - 2012-03-19 23:31:00
Anyone know if multiple simultaneous requests to (the same instance of)
FFTW are made, will FFTW either:
(1) simply serialize these requests (e.g. perform one right after the
other), thereby comple...
Fine frequency offset estimation [3 articles]
nahemoth - 2012-03-18 06:43:00
Hi,
I am working on a QPSK receiver (20 Mbps) for short packet reception and
based on a preamble. In a first step I use a CW preamble for timing and
coarse frequency acquisition, and with a differ...Estimating signals with irrational spectra [4 articles]
Tim Wescott - 2012-03-17 14:56:00
OK. This is sort of off the wall, and I know that the best practical
answer is probably "approximate it with a lumped-paremeter system and use
a Kalman filter". But:
Assume that you have a si...MPEG2/4 and Sony
Roman Rumian - 2012-03-17 06:01:00
Dear Friends,
what is the contribution of Sony to MPEG2 or MPEG4 video standard ?
How do this company participate in the benefits of these standards ?
Could you give me a short answer ?
Thank ...FIR + Fractional Sample Offset [8 articles]
Randy Yates - 2012-03-16 18:28:00
Hey Guys,
Long time no see, huh? Sorry, but I've been busier than a one-legged
man in an ass-kicking contest lately.
Hey, I've got a DSP theory question. It may be obvious and I'm missing
the ...Recommend a faster responding Low Pass Filter than a 2nd Order Butterworth? [14 articles]
andrew66 - 2012-03-16 14:07:00
I have a signal that generally lasts about 6 seconds and has a lot of
Low-Frequency, < 10 Hz, noise in it. I would like to use a filter to
obtain a reliable answer for the mean value of the signal, ...Phase of DC component of FFT [3 articles]
westocl - 2012-03-16 13:28:00
With the FFT the first bin is the dc component. What are the implications
of the 'phase' of that bin?
...PLL loop bandwidth analysis [9 articles]
jacobfenton - 2012-03-16 01:47:00
Suppose you have a classical 2nd order PLL, but instead of having a linear
error curve, with a slope you can determine, you have essentially a slope
of 0, which means that you can detect error, but on...Lytro [3 articles]
glen herrmannsfeldt - 2012-03-15 13:54:00
After seeing discussino of the Lytro light-field camera, the
first thought I had was that DSP would be pretty important in
making it work. Yet I don't remember seeing any discussion of it.
The ar...Coherence and Cross Correlation [10 articles]
ayeriera - 2012-03-15 12:00:00
Dear all,
I have a simple question that I am trying to confirm, but could not find
any clear answer yet.
If I want to compute the coherence of two signals (EEG signals in my case)
in a particula...