Q&A

# Post History

60%
+1 −0

posted 3mo ago by Nick Alexeev‭  ·  edited 3mo ago by Nick Alexeev‭

#3: Post edited by Nick Alexeev‭ · 2021-08-02T02:21:13Z (3 months ago)
• > Is there a mathematical process resembling the terms "digital"/"discrete" and "analog"/"continuous"?
• Rounding (down, or up, or to the nearest integer) is he mathematical process which discretizes value.
• Multiplication by the [Ш-function (Dirac comb)](https://en.wikipedia.org/wiki/Dirac_comb) discretizes time.
• > There is no such thing as digital signal. There is only digital information imposed on an analog signal. "Digital signal" is just a shorthand. [Prof. Donald Cox]
• > Is there a mathematical process resembling the terms "digital"/"discrete" and "analog"/"continuous"?
• Rounding (down, or up, or to the nearest integer) is he mathematical process which discretizes value.
• Multiplication by the [Ш-function (Dirac comb)](https://en.wikipedia.org/wiki/Dirac_comb) discretizes time.
• > I always had trouble understanding the terms "digital" and "analog"...
• I'll can reply with a quote from a lecture by Prof. Donald Cox :
• > There is no such thing as digital signal. There is only digital information imposed on an analog signal. "Digital signal" is just a shorthand.
#2: Post edited by Nick Alexeev‭ · 2021-08-02T02:16:41Z (3 months ago)
• > Is there a mathematical process resembling the terms "digital"/"discrete" and "analog"/"continuous"?
• Rounding (down, or up, or to the nearest integer) is he mathematical process which discretizes value.
• Multiplication by the [Ш-function (Dirac comb)](https://en.wikipedia.org/wiki/Dirac_comb) discretizes time.
• > Is there a mathematical process resembling the terms "digital"/"discrete" and "analog"/"continuous"?
• Rounding (down, or up, or to the nearest integer) is he mathematical process which discretizes value.
• Multiplication by the [Ш-function (Dirac comb)](https://en.wikipedia.org/wiki/Dirac_comb) discretizes time.
• > There is no such thing as digital signal. There is only digital information imposed on an analog signal. "Digital signal" is just a shorthand. [Prof. Donald Cox]
#1: Initial revision by Nick Alexeev‭ · 2021-07-26T22:23:36Z (3 months ago)
> Is there a mathematical process resembling the terms "digital"/"discrete" and "analog"/"continuous"?

Rounding (down, or up, or to the nearest integer) is he mathematical process which discretizes value.

Multiplication by the [Ш-function (Dirac comb)](https://en.wikipedia.org/wiki/Dirac_comb) discretizes time.