finding the sampling frequency from the following

1 visualizzazione (ultimi 30 giorni)
u-will-neva-no
u-will-neva-no il 11 Dic 2011
Hi everyone,
I have to work out the sampling frequency. I have set up a vector of time values with 128 elements sampled at twice a second. The signal has to be calculated with five cycles in 63.5s and the code for that is:
t = 0:0.5:63.5; yt = sin(2*pi*t*5/63.5);
How do I get the sampling frequency from this information?
Thanks!

Accedi per rispondere a questa domanda.

Risposta accettata

Walter Roberson
Walter Roberson il 11 Dic 2011
Sampling frequency is 1 divided by sample rate.
1 / (M seconds per sample) = ? samples per second
and samples per second is Hz .
  2 Commenti
u-will-neva-no
u-will-neva-no il 11 Dic 2011
Looking at wikipedia (which may be wrong) it states that the sampling rate is the same as the sampling frequency. So my sampling rate is either 0.5 or 2...
Walter Roberson
Walter Roberson il 11 Dic 2011
Frequency is always expressed in cycles (or items) per unit time, never in units of time.
Perhaps I should have said,
"Sampling frequency is 1 divided by sample period"

Accedi per commentare.

Più risposte (0)

Categorie

Scopri di più su Correlation and Convolution in Help Center e File Exchange

Tag

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by