Questions tagged [self-study]
This tag means the asker is new to the DSP field and is requesting extra guidance. It has similar connotations to the homework tag, but this lets potential answerers know they should probably do more than guide the self-studier compared with the homework requester.
160 questions
1 vote
1 answer
85 views
Understanding Autoregressive Models
I am studying autoregressive models such as ${\it AR}(1)$, ${\it AR}(2)$, ${\it AR}(p)$, and ${\it ARMA}$, as well as the Yule-Walker equations, specifically in the field of electrical engineering. ...
0 votes
0 answers
71 views
Filter away INT_MIN when doing DSP since -INT_MIN is undefined(?)
My problem is that I have a mic that delivers 24 bits 2's complement signed. There is nothing in that data sheet that hints at it not also delivering INT_MIN. The 8 ...
1 vote
2 answers
625 views
How can I apply a filter to remove reverberation with python?
I am developing an algorithm that automates the processing of audio files for the assembly of datasets of machine learning models. Among the steps to be followed for the processing of the files is to ...
1 vote
0 answers
25 views
implement gradient descent with sparsification algorithm
I am trying to implement the algorithm in this paper for finding a sparse vector x that minimizes the square error $\lVert y − \Phi x\rVert_2^2$ where $\Phi$ need to satisfy the restricted isometry ...
0 votes
1 answer
93 views
Magnitude spectrum of LTI system output signal
First year student so please excuse my lack of knowledge. As i understand i need to use convolution which is: $$ y^{out}(t) = u^{in}(t) * h(t) $$ Or maybe my thoughts are wrong so please correct me. ...
1 vote
1 answer
60 views
Plotting the amplitude and angle spectre of this signal
I am looking clarification that I have the appropriate solution to this question, thoughts and tips to improve my understanding are also welcome! f(n) is a discrete sample of the following signal. ...
0 votes
1 answer
92 views
Determining the full DFT values of X(k) given a partial sample [closed]
I have a sample of a signal lets say 8 values of a 16 value sequence. I am trying to obtain the full DFT from the partial. I am thinking that I am going to work back, I read the matlab documentation ...
-1 votes
1 answer
134 views
Expected value and autocorrelation
I have a wide sense stationary stochastic process ${{X_t;t\in \Re}}$ with mean 0 and autocorrelation function $R_x(\tau)=1-\frac{1}{4}|\tau|$ for $|\tau|=0,1,2,3;$ and zero anywhere else. I'm supposed ...
2 votes
1 answer
138 views
Expressing the frequency response in a more 'compact' form
I've just been working through the questions in Discrete-Time Signal Processing (Oppenheim and Schafer) and I came across this (Q33): Consider an LTI system defined by the difference equation $$y[n] =...
0 votes
2 answers
209 views
Calculating connected component's central moments
I am learning about image's moments. As an exercise I got this: For x̄ value I get 5 from this formula: $$= \frac{\sum_{x=1}^{X} \sum_{y=1}^{Y} xf(x,y)}{\sum_{x=1}^{X} \sum_{y=1}^{Y} f(x,y)}$$ As ...
1 vote
1 answer
93 views
How to learn image processing in an applicational way?
My question is for image processing and computer vision "practitioner" who study on a company. Since I have an degree on electrical engineering and mathematics, I have signal processing, ...
0 votes
1 answer
115 views
Probability of achievable data rate greater than target data rate $\Pr\left[\frac{1}{2}\log_2\left(1+\text{SINR}\right)>R_{\text{target}}\right]$?
I came across this formulation of the probability that the achievable data rate is greater than the target data rate for the NOMA system. $$\Pr\left[\frac{1}{2}\log_2\left(1+\text{SINR}\right)>R_{\...
0 votes
1 answer
50 views
What does $\mathcal{ E}(|h|^2)$, where $|h|^2$ is power of the channel gain $h$ represent?
I came across this notation of $\mathcal{E}(|h|^2)$ in a research article. $h$ is the channel gain of a wireless communication channel. In particular, a Rayleigh fading channel. I know that $|h|^2$ ...
0 votes
1 answer
40 views
Running a signal through a circuit with some odd components
I am studying a course in signal analysis and systems. Currently we are looking at aliiasing, samplig,DTFT and reconstruction. I got stuck on an excercise. For the in signal $x_{a}(t)=2\cos(2\pi F_{0}...
1 vote
1 answer
117 views
FInd the amplitude function to a system
I'm studying a course in signal analysis and have come across an exercise where I find the analytical part a bit tricky. I am to find the amplitude function $|H( f )|$ for a system with the impulse ...