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Discussion Groups > Comp.DSP

Comp.dsp is a worldwide Usenet news group that is used to discuss various aspects of digital signal processing.

There are 9 threads in our archives.

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The threads with the newest articles are listed first.

zero lag Butterworth filter
0

adamchapman - 2010-01-25 15:55:00
Im trying to implement a zero-lag butterworth Filtert as described in tha paper at http://www3.uta.edu/faculty/ricard/Grad%20Biomech/Pezzack/Robertson%20(2003)%20Design%20and%20responses%20of%20butt...zero lag Butterworth filter

PID Autopilot for landing
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adamchapman - 2009-10-02 15:03:00
Hi, I remember when I was at university in a lecture on PID controllers, the lecturer mentioned a way that an autopilot can tell the aircraft is on the ground, using nothing but a PID loop with v...PID Autopilot for landing

kernal density estimation function notation
0

adamchapman - 2009-08-28 07:29:00
Hi, I'm trying to implement the mean shift algorithm on page 18 of http://hal.inria.fr/docs/00/17/10/38/PDF/RR-6282.pdf . H is a diagonal matrix when you're using more then one dimension. ...kernal density estimation function notation

log energy of audio frame
0

adamchapman - 2009-06-11 13:43:00
Hi, sorry to post 2 questions in the same day but Ive been searching all day and got nowhere. Im trying to compute the log energy of an audio frame. I am aware that the result of my calculatio...log energy of audio frame

formant frequency vs. fundamental frequency
0

adamchapman - 2009-06-11 08:35:00
What exactly is the difference between the fundamental frequency of a sound and the first formant frequency? To me they look the same ...formant frequency vs. fundamental frequency

dimensions of multivariate gaussian
0

adamchapman - 2009-02-12 19:03:00
hello, I'm trying to construct a Gaussian Mixture model (GMM) from data with n dimensions. A multivariate Gaussian is described with: b=(1/(((2*pi)^(D/2) * sqrt(det(sigma)))) * exp(-0.5*(x...dimensions of multivariate gaussian

logarithmic power spectra looks ridiculously high
0

adamchapman - 2009-02-06 16:45:00
Hello, I was reading this paper (http://www.kecl.ntt.co.jp/icl/signal/ nakatani/papers/icslp2002f0.pdf) and thought his Power spectra looks ridiculously high. using 10*log10(S) for the log pow...logarithmic power spectra looks ridiculously high

Ripple Enhanced Power Spectrum (REPS)
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adamchapman - 2009-01-22 11:30:00
Hi, I'm trying to obtain the REPS for some audio data, but it's proving quite difficult. The link at http://books.google.co.uk/books?id=7yJXMJUw03oC&pg=PA253&lpg=PA253&dq=reps+%22ripple+enhanc...Ripple Enhanced Power Spectrum (REPS)

Time derivative of Blackman window
0

adamchapman - 2009-01-15 06:29:00
Hi, I've made a Blcakman window in Matlab with the code: windowWidth=256; Window=(0:windowWidth)/windowWidth; Window=0.42-0.5*cos(2*pi*adaWindow)+0.08*cos(4*pi*adaWindow); This looks fine w...Time derivative of Blackman window