wow! Thank you very much! That was a great work! Thank you so much for your explanations and analysis of the signal :) this is really interesting.

are you plotting the .mat file? I'm afraid that there must be some kind of mistake in the .mat file, because the original file (the .wav file in the Dropbox link...

wow! This is an awesome methodology! Thank you very much for this!Also, thanks a lot for selecting the cleanest bit of he signal, this was hard to me.Now I'm trying...

if we name "y" the signal I uploaded, what I'm looking at is "y(:,1)", so I think this is th I data. Could you upload what you see, please?

it's really tedious to extract a sine wave by zooming. They don't really look like sines waves:at least, they don't look like periodic waves

Thank you, I understand now. However, now the challenge seems to be to extract those 100 clean samples. Unless I create a sine signal with the same sample frequency...

hey! Yes... still working on this :)That sounds very good and it's something I definetively want to do! I tried the first part, but I'm not sure if this is correct. First,...

that'd be great, thank you! Let me know which one of these would be more convenient:1. recorded IQ data in a .wav file (this would be the original recorded data)2....

hey! thanks for this algorithm :)This is what happens when applied into my signal:...I think that's correct. There are similar patterns

Oh, I see what you mean: I'd like to extract as much information as I can from my recorded signal. But it looks like this signal can be non-periodic or at least,...

Hi David,thanks a lot for the algorithm and your explanation. My goal with this exercise is to clean my signal from noise and possible interference.I think with Goertzel...

Hi again,in the Matlab function, the frequency index has to be an array but I'm not sure how to create it:There is an example in the Mathworks link I put before...

Thanks a lot, I'm sorry to hear that you lost your first answer!I'll try this algorithm in Matlab with my signal and let you know how it goes :) Thank again!

Thanks, David. This looks very useful. Just a question: I check that there is a function in Matlab that performs the filter https://es.mathworks.com/help/signal/ref/goertzel.html...

Thank you!what sort of additional information should I provide?Also, when you say band-pass filtering, would you remove the spectrum around the peak highlighted...

thank you, but then "m" is going to be an array and I think it needs to be a scalar.Also, I realized my previous plot was wrong and I corrected so, when I computed...

thank you. I can't use the FM demodulation because I don't know the frequency deviation of the signal...so according to what I mentioned in my question, if the period...

Hi everyone,I recorded a periodic signal and it has some noise:Visually inspecting, I saw that a pulse width is 0.0214s and the period is 0.0302s.Also, I counted...

oooh...I see what you mean! I plotted what you said and I think I start seeing something now.Well, the signal's got many samples (22991297 samples, when not taking...

Thank you! So the magnitude of the signal would be the previous one I plotted? I mean, this one:or you mean, I and Q separately? In that case, this is the magnitude...

thank you. That's also what I'm looking for. At the moment, I just know the signal seems to be a kind of OOK, based on these codes. Regarding to the bandwith, I'm...

Oh, I see... thank you. All that I wanted to do is recording a signal from my parking remote which carrier frequency is 433MHz (in Spain). I have the rtl2838 dongle...

Thank you very much! Yes, the sampling rate (Fs) is 3.2Msps and the bandwidth is a bit weird, because I selected in the HSDR sofware using this: so as shown in...

thank you very much! This is the frequency plot I get:and for the time domain, I used this code:[y,Fs] = audioread('HDSDR_SHORT_433920kHz_RF.wav',[5000000 10000000]);
samples=0:1:5000000;
t=samples/Fs;
plot(t,y)and...

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