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[ FAR off topic ;] Competent reporting of electric utility problem

Started by Richard Owlett in comp.dsp6 hours ago 1 reply

I needed to ask a question of a *GROUP* who I trust and with which I have some credibility. I have a utility problem of some sort. I vainly...

I needed to ask a question of a *GROUP* who I trust and with which I have some credibility. I have a utility problem of some sort. I vainly attempted to have my "verbatim" problem description passed on to competent technical personnel. I've 3 years towards a BSEE and ~20 yrs as engineering tech &/or Jr Eng. What I observed was significant short term reduction of illumination pro...


Matlab FFT Reconstruction from Physiologic Frequency-Varying Signal

Started by BMEngineer in comp.dsp9 hours ago

DSP Experts, I am analyzing a physiologic signal that has a varying fundamental frequency. To create a more accurate reconstruction from the...

DSP Experts, I am analyzing a physiologic signal that has a varying fundamental frequency. To create a more accurate reconstruction from the FFT, I wish to include the bins immediately and symmetrically on either side of the fundamental bins. I refer to this as the "distribution method." I am confident I have been able to do a reconstruction using the fundamental bins (a standard reconstruct...


Python for DSP

Started by Max in comp.dsp14 hours ago 33 replies

Seems that Python is catching on for some DSP work. The recent Coursera course co-sponsored by Julius Smith III used Python rather than...

Seems that Python is catching on for some DSP work. The recent Coursera course co-sponsored by Julius Smith III used Python rather than Matlab. I've searched for DSP libraries but there's kind of a confusing jumble. Some are just using SciPy. Does anyone know of specific Python libs that would extend SciPy's scope?


Adaptive PIDF under closed-loop

Started by adrianni in comp.dsp1 day ago 8 replies

Hi guys I know this not quite by the book of control theory, but i am looking into ways to implement an adaptive system onto my PIDF. Lets say...

Hi guys I know this not quite by the book of control theory, but i am looking into ways to implement an adaptive system onto my PIDF. Lets say (theoretical) that we dont have equations of state, hence we can't linearize the system around certain operating points. We can only do open-loop step response to estimate a optimal controller. The system is unstable and have complex poles. With that b...


Book recommendations

Started by Celdor in comp.dsp3 days ago 7 replies

Hi. I have asked this question on Stack Exchange in DSP section, as well. H= ope it is ok if I have copied this question here :) I am looking...

Hi. I have asked this question on Stack Exchange in DSP section, as well. H= ope it is ok if I have copied this question here :) I am looking for a good reference on DSP. I am a little bit more than begin= ner and have some experience in DPS. I think I would have to start with rat= her easier books where a concept of DSP is explained based on practical exa= mples, intuitively. Eventually...


SNR for ECG signal

Started by Jebarajpeter in comp.dsp4 days ago 12 replies

Hi all, I am working on baseline wander noise removal from ECG signal. I have to compare the performance of different algorithms. for comparison...

Hi all, I am working on baseline wander noise removal from ECG signal. I have to compare the performance of different algorithms. for comparison I have to use SNR. My question is how to calculate noise and signal power of an ECG signal available in the data set. I do not know what kind of noise is there in the ECG signal. I have tried like this: 1. Filter the ECG signal with a basic filter ...


ldd results on binaries from Ubuntu and its dependencies?

Started by Anonymous in comp.dsp4 days ago 6 replies

When I ran ldd on myprogeamExecutable and I got: linux-vdso.so.1 => (0x00007fff08709000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6...

When I ran ldd on myprogeamExecutable and I got: linux-vdso.so.1 => (0x00007fff08709000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f015360a000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f0153245000) /lib64/ld-linux-x86-64.so.2 (0x00007f0153929000) I need to port this to a server. I am wondering how to meet these dependencies - I know the server is 64bit Debian


Qpsk Demodulator

Started by Eshwar varma in comp.dsp6 days ago 26 replies

I implemented a qpsk demodulator on NI fpga . When i run the code iam getti= ng correct constellation one out of 4 succesive runs remaining...

I implemented a qpsk demodulator on NI fpga . When i run the code iam getti= ng correct constellation one out of 4 succesive runs remaining times const= ellation is rotating as shown in fig url: https://decibel.ni.com/content/se= rvlet/JiveServlet/showImage/105-32337-135325/Constellation.jpg . q1. what are the possible causes for constellation rotation?


questions on convex hull

Started by RichD in comp.dsp6 days ago 1 reply

Convex sets have become important in numerical optimization, so I'm trying to edjicate myself. Given some subset of points in a vector...

Convex sets have become important in numerical optimization, so I'm trying to edjicate myself. Given some subset of points in a vector space, one must first determine its convex hull. For a set of points on a plane, this is easy to visualize However, I don't see how to write the code to accomplish this. Now suppose you have a set of vectors in a 6-D space. The convex hull w...


Conversion of Single Photo to 3D to Video -- Trial Runs

Started by Anonymous in comp.dsp1 week ago 9 replies

This is a short video segment showing some trial runs at an early stage in = the development...

This is a short video segment showing some trial runs at an early stage in = the development process: http://www.youtube.com/watch?v=3DmUEiiVFqVww One set of segments takes place over Chicago, the other around Mount Rushmo= re. Since it's only a first trial run (basically to see how far one can mov= e in different directions before distortion sets in), the images were repro= jected at redu...


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