1. Message map for communicating differences between digital and analog signals
Pre-Event Risk Communication Map for Digital Signals
Stakeholder: Public and Media
Question or Concern: How is a digital signal different from analog signal?
Key Message 1:
Digital has become the
common choice for
today's audio and video
formats.
Key Message 2:
Digital media is more
compatible with many
electronic devices used on
daily basis's.
Supporting Fact 1-1:
Analog recordings
deteriorate quickly from
one duplication to
another.
Key Message 3:
Analog cannot be natively edited by a PC
editing system. It must be converted to
digital, which is time consuming and
creates further loss of quality.
Supporting Fact 1-2:
Digital is compact and
maintains high quality
pictures and sound over
repeated duplications.
Supporting Fact 1-3:
The amount of data in the world is
increasing - large portion of this
comes from the interactions over
mobile devices being used by
people in the developing world,
making digital media increasingly
popular.
Supporting Fact 2-1:
Analog systems record
light and sound as
electrical signals.
Supporting Fact 2-3:
Digital systems record light
and sound as binary codes
using 1’s and 0’s electrical
signals. The electronics
pulses are On or Off creating
the binary code.
Supporting Fact 2-2:
Analog devices read the
media, such as tapes or
records, by scanning the
physical data off the
media.
Supporting Fact 3-1:
Devices such as hard drives, CD recorders, and
Mini DV camcorders are digital devices, and
therefore record data digitally. VCRs, tape
players, and record players are analog devices.
Supporting Fact 3-2:
Digital devices, such as computers,
make editing and reproduction of the
information easier and faster.
Supporting Fact 3-3:
A digital signal is an estimation of
analog data. While digital information
is not as exact as analog information,
it can be used with other digital
devices.