Transcript Multimedia Enabling Software - The Institute of Finance

Multimedia Enabling Software
The Human Perceptual System
• Since the multimedia systems are
intended to be used by human, it is a
pragmatic approach to design multimedia
systems based on the needs and
capabilities of human perceptual systems.
• Many multimedia are not designed based
on these requirements.
Important Notes on Audio
• In playing either digital or MIDI audio on
the Web, just do one of the following
things:
– Wait until the entire sound file is downloaded
to your computer, then play it back.
– You can play downloading sound file as soon
as enough of the sound is cached in the
computer’s buffer and downloading continue
to fill the buffer faster.
Components of Human Perceptual
System
• Human perceptual system consists of the:
– Human Visual System
– Human Auditory System
• How these systems works is still not
completely understood and is a subject of
continuing research effort.
Introduction to Multimedia
Authoring Tools
• The rapid development of multimedia
operating environment has been matched
with the development of software tools.
These tools could be categorised as:
– Image creation, preparation and editing tools.
– Audio preparation and editing tools.
– Video preparation and editing tools
– Animation tools
– 3D tools
Introduction to Multimedia
Authoring Tools
• These tools are used for various media
creation and preparation activity.
• In-depth understanding of how text,
graphic, audio, and video is required in
operating of these tools.
Introduction to Multimedia
Authoring Tools
• Multimedia authoring tools provide the
important framework needed for
organising and editing the elements
multimedia project, including graphics,
sounds, animation, and video clips.
• Authoring tools are used for designing
interactivity and the user interface.
Types of Authoring Tools
• There are mainly three types of authoring
tool:– Card-based tool
– Icon-based tool
– Time-based tool
• Some authoring tool may combine
different features of the three types.
Types of Authoring Tools
• Prepare the tool that best fit the job you
want to do with your multimedia projects.
• Authoring tools are being added new
features and increase performance.
• It is important that you study the software
product reviews in computer trade journals
and talk to the current users before
deciding best tool.
Editing Features
• The elements of multimedia need to be
created, edited, and converted to standard
file formats, and the specialized
applications.
• The more editors your authoring system
has, the fewer the specialised tools will be
needed.
Programming Features
• Multimedia authoring systems offer one or
more of the following approaches, which
are:– Visual programming with icons, and others.
– Programming with scripting language.
– Programming with traditional languages such
as C or Basic.
Sound Editing Tools
• Tools used in editing sound (digital or
MIDI).
• You can cut, copy, paste, and edit
segments of the sound, something that
you can’t do in a real time (that is, with the
music playing).
• Example of the editing tool is Audacity.
Animation
• Animations and digital video movies are
sequences of bitmapped graphic scenes
(frames), rapidly played back.
• But animations can be made within the
authoring system by rapidly changing the
location of objects to generate an
appearance of motion