Signal Processing Weekly Newsletter - Friday, June 27, 2014

Signal Processing newsletter

Top new questions this week: Digitally undoing a hardware filter I have a bunch of data that went through a hardware filter before being digitized. The data has been taken this way for quite some time, and everyone is fine with that. Now, there is a new application … filters   asked by Matt Young 3 votes answered by SleuthEye 0 votes Why $x(t) = \cos(\frac{\pi}{3}t)$ and $y(t) = \sin(\frac{\pi}{3}t)$ are considered identical signals? Consider the following question that I toke from Signals and systems: Part I exercises, question 1: (b) With $x(t) = \cos(\omega_x(t + \tau_x) + \theta_x)$ and $y(t) = sin(\omega_y(t + \tau_y)+ … continuous-signals   asked by BSH 3 votes answered by Matt L. 3 votes Does Wigner-Ville distribution provide the highest resolution? For linear time-frequency representation, the resolution is limited by Gabor limit. However, if interference is allowed, the resolution may be higher. What is the possible resolution in such a case? … time-frequency   asked by kattern 2 votes answered by Jazzmaniac 0 votes At which point in the signal processing chain to use Hann Window? I have a question about signal processing. Experienced with embedded design and code, but DSP is in new territory. Thus far I am using the CMSIS DSP library functions, which are working well. I am … fft window-functions   asked by Roger 2 votes answered by jojek 2 votes How to calculate step and impulse response at multiple sampling rates I'm struggling with a basic concept. Suppose I have a system $y(t)=e^{-at}u(t)\ast x(t)$ and I want to plot impulse response and step response using Matlab conv() function at various sampling rates. … matlab convolution impulse-response   asked by Budric 2 votes answered by Dissident penguin 3 votes Non-uniqueness of continuous time sinusoids? I have read the DSP literature and I get why: $$e^{j(\omega+2 \pi m)n}=e^{j\omega n}$$ But can't we prove the same in continuous domain also in the following way: $$e^{j\omega t}$$ $$e^{j(\omega+2 … discrete-signals   asked by Farooq 2 votes answered by Matt L. 3 votes What is dynamic pulse-width modulation? I'm working through exercises in a book called The Audio Programming Book and have been doing okay for nearly 300 pages, but have just got stuck. (I'm a musician, not programmer or audio specialist … modulation c   asked by Bob Broadley 2 votes Greatest hits from previous weeks: Compressive Sensing through MATLAB Codes I am new to the topic of compressed sensing. I read a few papers about it by R.Baranuik, Y.Eldar, Terence Tao etc. All these papers basically provide the mathematical details behind it, i.e., … matlab compressive-sensing   asked by USC 4 votes answered by Scott 8 votes I and Q components and the difference between QPSK and 4QAM Both 4QAM and QPSK apparently produce the same waveform, but are they the same mathematically? In a QPSK constellation, are the mapping points at 45, 135, 225 and 315 degrees while the 4QAM is at 0, … signal-analysis   asked by Wilhelmsen 3 votes answered by Dilip Sarwate 12 votes Can you answer these? How to synchronise two audio files using a marker I'm working on a project on which we use WebRTC and the RecordRTC library to record audio files. I would like to be able to process the audio files server-side to ensure a good synchronisation. To … audio signal-analysis sound   asked by Ariel Mitevski 1 vote Finding Probability Density Function using Matlab I have a vector x. I want to find the Probability Density Function of it. I used: xi = min(x):1e-9:max(x); f = ksdensity(x,xi); plot(xi,f) aaa=trapz(f) where x is already defined. However, the … matlab   asked by student1 1 vote Comparing two signal outputs from two clients on a networked computer game to identify lag Basically, I'm running a server and two clients of the Unreal Engine and trying to figure out if there is lag in player movement on one of the clients (the clients are different in way that's not … classification software-implementation distance-metrics   asked by user10310 1 vote

Subscribe to more Stack Exchange newsletters Unsubscribe from this newsletter or change your email preferences by visiting your subscriptions page on stackexchange.com. Questions? Comments? Let us know on our feedback site. If you no longer want to receive mail from Stack Exchange, unsubscribe from all stackexchange.com emails. Stack Exchange, Inc. 110 William St, 28th Floor, NY NY 10038 <3