Questions tagged [matlab]
MATLAB (MATrix LABoratory) is a numerical computing environment and a fourth-generation programming language. Use this tag with care.. see excerpt.
3,129
questions
-1
votes
0
answers
31
views
Histogram Technique for Sine Wave
I am collecting a data set of 50k samples using a 14 bit 100 MS ADC. The frequency of the sine I collected is 6 kHz. (I collected and experimented for lower and higher frequencies. Especially 9.7 Mhz, ...
- 162
2
votes
0
answers
45
views
Beginner question: Plotting frequency spectrum of a discrete spectrum using Matlab?
First, I apologize for the repost, I got really confused how Stack Exchange works. I tried my best to improve the question!
Anyhow - I'm fairly new to the world of DSP, and I'm struggling with finding ...
- 21
0
votes
1
answer
41
views
s to z domain transformation
I have $2^{nd}$ order bessel filter transfer function. I want to model this analog bessel filter in FPGA. For this I need its digital or discrete form. I am trying to get digital filter's coefficients ...
- 11
0
votes
1
answer
68
views
Difference Data Collected and Reference Sinus
I have a signal generator with 40 MHz bandwidth and 1.2 GSa/s features. I generate a 9.7 MHz sine on this generator. I sample using ADC demo board at 100 MHz. I generate a reference signal in MATLAB ...
- 162
2
votes
1
answer
460
views
Two Sinus Multiply and Add
I'm trying to understand the difference between the sums and products of two sine signals. I also wonder where and how these two situations are used in practice.
...
- 162
1
vote
1
answer
48
views
lsqcurvefit using dynamic input data
I have input vector $\boldsymbol{u}$ and output vector $\boldsymbol{y}$ of length $N$, and I use $u_k,y_k$ to denote the $k$-th elements of $\boldsymbol{u}$ & $\boldsymbol{y}$ and $u_{k-1}$ as the ...
- 115
0
votes
1
answer
57
views
Matlab SNR Function
While examining the snr function in Matlab, I noticed something like this.
When I examined the code and output given in their examples, I noticed that the ratio between average noise power and average ...
- 162
0
votes
0
answers
64
views
Different FFT results
I am trying to take IQ data from 2 SDRs and process that data in MATLAB. The ultimate goal is to use the Goertzel algorithm to grab the magnitude/phase information at a specific frequency under test.
...
1
vote
0
answers
48
views
How to utilize product graphs in graph signal processing?
I'm working with dynamic graph signal processing. How to plot time variation and spatial variation separately and take the cartesian product of those two graphs?
- 11
2
votes
1
answer
43
views
Recreating the `dwt` function from Matlab
I am trying to implement DWT (Discrete Wavelet Transform) on a given signal, without using the dwt function in Matlab. My approach was to get the synthesis filter coefficients using,
...
- 23
0
votes
1
answer
57
views
why are the coefficients different when I design an IIR bandpass filter using butter compared to using the Filter Design Toolbox?
In matlab, for the same parameters, why are the coefficients different when I design an IIR bandpass filter using butter compared to using the Filter Design Toolbox?
When I run a command in matlab
<...
1
vote
1
answer
68
views
Minimum Number of Base Accelerations Needed to Simulate Gaussian White Noise in Structural Dynamics?
I am currently working on a scientific paper where I subject a structure to base accelerations modeled as Gaussian white noise. I am relatively new to signal processing and would appreciate some ...
- 11
4
votes
1
answer
90
views
How does MATLAB's edgetaper function work?
MATLAB has a function edgetaper that does something I haven't seen before:
J = edgetaper(I,PSF) blurs the edges of the input ...
- 2,710
2
votes
2
answers
301
views
Detect and Localize Abrupt Changes on a Noisy Non Periodic Signal
I have a set of some 5000 x,y datapoints. They plot a smooth curve with large gradient and curvature at the right. There is high-freq noise that varies in amplitude from dataset to dataset, but the ...
- 73
0
votes
0
answers
24
views
I want to generate a real time fft of vibration data from a triaxial MEMS accelerometer
I have been trying to generate a real-time FFT plot for my final year project on Condition Monitoring using a MEMS accelerometer (an MPU 6050) and an Arduino UNO. My goal is to generate a real-time ...
