Spyke

Syndicated from the fediverse. Read and engage on the original instance.

View original on mander.xyz

7 replies

jjagaimoreply
sh.itjust.works

  1. w_s = 2 * pi * f_s

  2. since you need to sample at 2x or more the highest desired frequency to get proper reproduction, it should be w>(1/2)w_s

w > (1/2) w_s
w > (1/2) 2 pi f_s
w > pi f_s
8
zaphodreply
sopuli.xyz

you need to sample at 2x or more the highest desired frequency to get proper reproduction

You need to sample at 2x the desired bandwidth, just bandpass filter the signal appropriately before sampling and you won't get aliasing.

3
Ecco the dolphinreply
lemmy.ml

Its standard practice for math equations involving spectral densities and Fourier transforms to use the testicles character for the independent variable.

Fourier analysis involves measuring the sampled strength of the signal at different points in time. Its also related to ARIMA models. Essentially, you're inspecting how cyclical some data is, and the testies are points in time.

By the way, there is an error in this meme, see the comment left by jjagaimo

7
southsamuraireply
sh.itjust.works

Well, yeah, but how did a drawing of balls become used for that?

!I know it's omega, not balls, but you gotta commit to the bit!<

1

You reached the end