# Tag Info

## New answers tagged matlab

### FFT error when number of samples growth - Matlab/octave

Use the function sinpi, which should be available in the current release of octave. This function uses a separate Taylor series expansion for sin, avoiding the ...

### Am I generating audio signal with a given particular SNR value correctly?

It appears to be correct, assuming we define SNR as the total power in the signal relative to the total power in the noise although I would proceed a little differently. To note briefly first, the SNR ...
• 53.3k

### Differences between STFT and DGT

Based on the definitions in the Wikipedia page (and other textbooks), it seems that they are both the same. The Wikipedia page says states: The Gabor transform, ... is a special case of the short-...
• 46.8k

### Why does constellation looks odd when the number of filter span is an odd number?

Assuming that no other noise or passband distortion is being introduced, the result is inter-symbol interference which would be expected in this case jf: The final plot shown is not the cascade of two ...
• 53.3k
Accepted

### Why does constellation looks odd when the number of filter span is an odd number?

I simulate same system with GNU Radio. I have obtained the same constellation pattern when I shift the signal index by 1 and downsample. I suppose MATLAB select wrong time index. I have added ...
• 123

### Beginner question: Plotting frequency spectrum of a discrete spectrum using Matlab?

Use the code below, here Ts = 1/Fs, where Ts is the sampling time of your signal and L is the number of points in your signal ...
• 115
1 vote
Accepted

### Calculating the signal shift of acoustic emissions between a source and an observer

Tricky. First you need to make sure that data capture is good enough, which does not seem to be the case here especially for the second signal. You can clearly see something like quantization steps. ...
• 46.8k

Top 50 recent answers are included