Top new questions this week:
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Assume we have the following system (coming from control systems theory, hence in s-domain)
$ Y(s) = H_A (s) \cdot A(s) - H_B (s) \cdot B(s) $
I now wish to consider $a(t)$ and $b(t)$ as white noise ...
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Let there be a discrete signal that is the sum of sinusoidals and can be described by
$$s(n)=\sum_i A_i \mathrm{sin}(2\pi f_i \frac{n}{f_s}+\phi_i)$$
where $A_i, f_i, \phi_i$ are unknown but fixed ...
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Let $(e_i)_{1\leq i\leq M}$ be vectors with zero-mean i.i.d. entries from a Gaussian distribution. In a compressed-sensing setup, I have observed the collection of scalar products $(\langle x\, |\, ...
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I am working on a project that converts radio data and transcribes it into text looking for specific types of radio chatter. For most of the time, the radio signal is dead air. Periodically, there ...
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Good day everyone
I have recorded experimental frequency response functions (frfs) for a loose bolt monitoring project. Please see figure 1 below for an example of the frf.
Figure 1
The purpose of my ...
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I am dealing with a customized processor that has a processing latency of one sample (20.8 microseconds) at 48kHz Sampling rate .
What I would like to know is ...does this latency of one sample have ...
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**FIND UPDATES BELOW THE ORIGINAL QUESTION TEXT:
I am trying to lowpass filter electrophysiological data and I see ringing near sharp transients at signal start and end.
Ringing at start:
Ringing at ...
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Greatest hits from previous weeks:
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I saw in a SO thread a suggestion to use filtfilt which performs backwards/forwards filtering instead of lfilter.
What is the ...
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Adaptive thresholding has been discussed in a few questions earlier:
Adaptive Thresholding for liver segmentation using Matlab
What are the best algorithms for document image thresholding in this ...
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What is the difference between the Fourier transform, short time Fourier transform and wavelets?
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I'm have a PSD graph of dB/hz vs. frequency in hz. I want to convert the dB/hz unit to dB, but I can't find any way of doing it. Help would be much appreciated!
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I wanted to generate Gray Scale wedge image of 10 Levels in MATLAB and then increase and decrease its Intensity. By high intensity, I mean mapping increasing the level of gray scale intensity in an ...
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I have been working on the topic of camera pose estimation for augmented reality and visual tracking applications for a while and I think that although there is a lot of detailed information on the ...
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Why are we using circular convolution in DSP?
What's the main solid reason for the use of it in digital
processing?
Why does the concept of circular convolution come more often than
linear ...
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Can you answer these questions?
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I am currently trying to recover a satellite signal, encoded following CCSDS standards. This includes a convolutional code with rate 1/2 and constraint length 7.
I am receiving the signal through an ...
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I was trying to build a (B)PSK-63 modulator as my hobby project.
Here is my code and the link to specs:
How to modulate PSK63 with liquiddsp?
Now it is working, but since I am using a NCO to shift the ...
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There are some educational materials, like Alex Pan - CS 194-26: Image Manipulation and Computational Photography - Fun With Frequencies and Gradients, which demonstrate the unsharp masking technique ...
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