Signal Flow II

CMS 3510 and 3511 Fall 2018

Signal Flow Assignment

  • A process you are interested in
  • Inputs?
  • Outputs?
  • Switches, junctions, choices?
  • Different outcomes?  Consequences of Decisions?
  • How are things related?
  • Flow chart, system, map or circuit?
  • At least 10 elements / components

Flow Chart

Flow Chart

Flow Charts:

Making a decision

Flow Charts:

PROCESS FLOW

DA example HDMI video

Elimination

(Tournament, many inputs, one output)

Hierarchical

Organizational System

Branching Structure

Game / Sport

Choose your own adventure

PRACTICAL SYSTEMS

  • Railways / train stations
  • Freeways, city streets
  • Computer networks
  • Chemical reactions
  • Electric circuits
  • Decorations

NETWORK MAPPING

  • Start with a Wikipedia or other article on a subject
  • Note what it is connected to
  • Continue noting connected articles until...

Fictional ideas

  • Unicorn migration patterns
  • Colonize the solar system
  • Haunted House plan
  • Infernal machines
  • etc...

Feedback Loop

A system where the output loops back on itself and feeds into the input.  This often creates a runaway effect.  Loops that get bigger and bigger are called positive feedback loops.  Loops that get smaller and smaller are called negative feedback loops.

Feedback loops examples

positive feedback loop

Feedback loops examples

positive feedback loop (from a zombie perspective)

Zombie outbreak

Zombies infect humans

Human population drops

Infected humans infect

more humans

+

Equilibrium...

The populations keep each other in balance, population growth loops are kept under control.

Stampede!

Positive feedback loop

Feedback loops in audio and video

The amplified audio goes back into the mic and gets amplified again, into infinity, which sounds like this.

The video monitor is being filmed, so a monitor with an infinite number of monitors inside of it appears, which looks like this.

How to avoid A/V feedback loops?

Keep the input away from / not pointed at the output!

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