# All Questions

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9 views

### Bandwidth in the filter-Hilbert method

I understand that the Hilbert transform on broadband data produces uninterpretable results. And so we first bandpass the data, and then run the Hilbert transform. My question is, how wide can the ...
21 views

### Conversion from counts to dB

I have a sound signal, recorded by a hydrophone, which units are counts. I would like to convert the counts into dB re uPa (Decibels relative to microPascals), is that possible?
22 views

### Demodulation of FSK signal

What kind of FSK signal is this and what demodulation technique can I use to demodulate it. Why is the phase of the 1's changing like that and how does that effect how it needs to be demodulated. I ...
18 views

### Feature extraction/engineering with DWT in frequency domain

Apologies in advance if this is a bit of a novice-level and open-ended question. I have number of IR spectra from which I would like to extract/engineer features to train a machine learning ...
10 views

### Cross location Cross frequency coupling

Let's say there are 2 sensors recording data at some sampling rate. I'd like to know, how to calculate Cross frequency coupling (Phase amplitude coupling, for now) between these 2 channels ? I have ...
28 views

### Count heart beat from audio capture using smartphone

I am working on a project where I am required to perform heart rate BPM calculation from an audio signal captured using smartphone microphone / hands-free. Constraint is not to use ML. So I am left to ...
10 views

22 views

### I am trying to plot ads-b signal and decode it using matlab

I am trying to plot ads-b signal and decode it. I have a wav file having ads-b signal and I can get first picture using next code. ...