Signal-to-Noise Ratio

[DarrylMorrell]

This is my enthusiastic mode. You might find it helpful to play the videos back at 1.5 or 2 times actual speed.

[L.C.Sweeney]

Learnt this at uni 7 years ago. Lovely to go over it again. I'm always amazed at the power of logs (no pun intended) and bels and how useful they are.

[vanessadeligi]

I really like the speed and the way you explain things. Very good.

[evielai]

Explain in a clear and systematic way.
Thanks for making such nice video:)

[danielcolon]

Thank you so much, it was very clear to my and acctually helpfull to a homework that I have at University. Cheers from México

[santhoshwagle]

understood how to calculate it. thank you. but how to measure it? i mean if that signal with added noise shown in the picture is sampled and given to us, how do we estimate SNR??

[agstechnicalsupport]

A very good summary of signal to noise ratio basics !

[steventimberman]

Really really well done (9 years later)

[JackJack-xjei]

Okay, nicely explained, but this assumes I already know the power/voltage of the signal AND noise separately. What I have in real life is a signal, that I can sample - so I got an array of values. How do I calculate the SNR from something like that?

[fidesybanez]

The mathematical explanation was good. However, it would have been better if you explained whether it is good to have SNR of 2 or 1/2 or 100. It would be helpful to tell that SNR of 100 is good because signal power is greater than noise power and that an SNR of 1/2 shows that noise power is twice greater than signal power.

[sarkariupdates]

Love from india.
I appreciate your great work....

[sergeantcrow]

Thank you... Reading my Sony DSR 570 Cam manual.. regarding HAD CCD, it states S/N: 63dB... ( Looking good : ) ) and now I know a little about S/N dB.

[dr.ganeshs.warkhade]

Very good, helped me a lot in understanding the basics of SNR

[chricsif]

Thank you for this descriptive explanation.

[shannonchow]

But in practice, how to extract the noise from a noised signal?

[joshuadrewlow]

Maybe a funny question, where is the noise coming from? What factors/sources produce a noise?

[carlisleee_]

So is signal to noise ratio calculated signal / noise ?
This is assuming we have our SNR

[paul]

Im pretty sure the voltage SNR in dB is 10log(SNR) and the power is 20log(SNR) as the power is the square of the voltage

[MrFreeze]

i really wish i could explain this to my customer and understand it. they would all leave me alone.

[hugojj]

loved the vid, couldn't help realize you sound a bit like the joker from dark knight tho XD