Class01

Analog vs. Digital

Summary

  • An analog signal is a continuous signal; analog signal values are known for all moments in time.

  • A digital signal is a discrete signal; digital signals are known at certain specific times.

Analog

how audio works

how film works = https://www.youtube.com/watch?v=rqSbmw9u1CE&feature=youtu.be&t=127

lossy example = https://www.youtube.com/watch?v=icruGcSsPp0

how stereo records work = https://www.vinylrecorder.com/stereo.html

Mario Davidovsky in 1970

Digital

a transition from a land to a pit or a pit to a land is interpreted as "1" while the absence of a transition is interpreted as "0"

https://www.electronics-tutorials.ws/binary/signed-binary-numbers.html