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What exactly is impulse response?
Mathematically speaking an impulse response is the response of a system to an input which is a dirac function (i.e. infinty at t=0 and zero everywhere else). But physically speaking what does this exactly mean? Impulse response of a system is very...
I read a small portion on Maxwell's equations in the second part of this book and I say that I have never read anything more interesting than this. It's really awesome by the way. The author is a well known personality. He is the Nobel Prize Winner Richard Feynman, who specialized in quantum...
Hello
This is an awesome site for DSP. (Make sure you switch on the speaker)
https://www.falstad.com/dfilter/
He also has applets for electronics
https://www.falstad.com/circuit/
This guy also has applets for maths and physics too.
https://www.falstad.com/mathphysics.html
See...
I just saw this site on microwave communications while I was surfing the net. Its encyclopedia is really nice.
I thought it would help you all.
So I share the link here
https://www.microwaves101.com/index.cfm
(Speaker and speech recognition follow the same principle. So you can change this code to suit to your wish)
I see that many of you are asking code for speaker recognition. I have used mfcc for feature extraction and neural networks for pattern recognition. Here's the code
load dad
load...
I think everyone knows what doppler effect exactly is. I wish to write what I understood about doppler effect intuitively. If you think that I am wrong you can correct me.
Assume that a wave is coming towards you. It's time period is T seconds. Now the frequency that you see will be...
Usually we represent the gain in terms of decibel (db). Have you ever wondered why we are doing like that? I found this while I was reading about Bode plot.
The main reason for working for log is because multiplication becomes addition in log. So this reduces the complexity.
Consider a...
In electromathematics two important functions play a major role in determining the system response to an arbitrary input. Indeed it's only one function which is called as the Transfer function of the system. From the transfer function of the system we can find out the characteristic equation...
The main aim of mathematics is to solve problems easily. That's the reason why we have formulae. Consider the series of cos x, sin x and e^x.
cos x= 1 - x^2/2 + x^4/24 - x^6/720 ...
sin x=x - x^3/6 + x^5/120 - x^7/5040...
e^x= 1 + x + x^2/2 + x^3/6 + x^4/24....
Now coming back to...
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