# Tag Info

Accepted

### What kind of hardware implements Fourier transform?

Devices using the Fourier Transform It is very difficult for an electronic device to decompose a signal in different frequencies. It's not. There's actually quite a few devices that do that, ...
Accepted

### Can I use the FFT to recognize musical notes on a piano?

The concept is good, but you will find it is not so simple in practice. Pitch is not simply the predominant tone, so there's problem number 1. The FFT frequency bins can't hit all (or even multiple)...
Accepted

### Would a triangle wave have finite or infinite sinusoidal components?

a triangle wave is continuous Quote from here: - The triangle wave has no discontinuous jumps, but the slope changes discontinuously twice per cycle Having the slope change discontinuously also ...

### Would a triangle wave have finite or infinite sinusoidal components?

instructor said that since the triangle wave is continuous it can be represented by a finite number of sine You either didn't get this right or the instructor misspoke. It's not sufficient for the ...
Accepted

### Do square wave exist?

As you know (since you mentioned the Fourier transform), a square wave can be represented (well, almost -- see below) as the sum of an infinite series of sine waves. But it would not be possible to ...

### Fourier Transform vs. Laplace Transform?

The differences can be found in the definition. A Fourier transform: $$\mathcal{F}\{f(t)\} = F(j\omega) = \int_{-\infty}^{+\infty} e^{-j\omega t}f(t)dt$$ While an ordinary Laplace transform is given ...