Elaborate the effectiveness of audio-visual media in DSC activities with special reference to Pakistan setting?
Audiences expect you to use visual aids in our oral presentations. Visual aids can improve the quality and impact of your oral presentation by:
Creating the attention of your listeners.
Illustrating points that are difficult to explain in words alone.
enhancing understanding of the topic,
Centering the attention of the listeners.
Helping our speech has lasting impact.
emphasizing your information & ideas, and
Helping our listeners remember your talk.
With the right tools and ideas, you can be a high-impact presenter ready for an increasingly competitive world. Modern technology is providing exciting improvements to the most traditional types of presentation media offering new ways for you to excel at meetings, conferences, conventions, and training sessions.
Today’s speakers can select from a variety of visual aids to enhance oral presentations. Among the most popular types of visual aids are: computer based presentation, video, 35-millimeter slides, overhead transparencies, flip charts, whiteboards, and handouts.
1. Computer based Presentation
The availability of affordable software and new technology has made computer based presentations the visual aid of choice in most business situations. What used to take weeks of preparation and an outside production house can now be created by you at your desktop. Computer-based presentations can be real-time or prepared in advance. Real-time presenting is useful when the audience needs to see immediate results or the software in action–like financial brainstorming sessions or software training. Prepared presentations can be simple text slides or with the integration of text, graphics, animation, video, and sound sophisticated multimedia productions.
When we need to show real-life motion in your presentation, video is the most effective medium. Video clips are used with computer graphics to create multimedia presentations. These presentations incorporate text, graphics, animation, and motion video. Portable video projectors have made video practical for everyday meetings as well as group presentations.
These cost-effective, plug-and-play projectors allow you to project high-quality video images from VCRs, cameras, laser disc players, and CD players.
3. 35mm Slides
The content of 35mm slides provides a crisp, colorful, easy to read format for presenting information. 35mm slides are the most universally accepted way to show full-color, three-dimensional still pictures. They are also used extensively to show graphics or pictures. Slides can be used with large or small audiences and, because the projectors are small and portable, they can be taken almost anywhere. Remote operation allows you to move around the room and still control the duration and sequence of each slide.
4. Overhead Transparencies
Overhead projection is the most versatile and popular presentation medium used by businesses today. Because of its effectiveness and wide acceptance, its popularity is continuing to grow. The projectors are brighter, quieter, and more portable, and high-quality transparencies can now be printed in full color directly from our computer.
While everyone seems to be interested in creating high-tech computer generated presentations, the flip chart still continues to be the most effective presentation media of all. One should not assume that investing a lot of money in high tech visual aids & equipment will “make” our presentation. The best visuals have been and still are the simplest.Whether hand-written or professionally imaged, the flip chart remains one of the most popular means of presenting meeting room information.
The chalkboard is probably the oldest, most familiar visual aid. It has evolved over the years from the standard black or green hard chalk variety to whiteboard that requires the use of liquid markers. Information can now be written quietly, in brighter colors, and erased completely with considerably less effort. Whiteboards are inexpensive, easy to use, and best suited for small groups where brainstorming sessions or spontaneous illustrations are necessary.
In the early 19th century scientists took note of a visual phenomenon: A sequence of individual still pictures, when set in motion, can give the illusion of movement. These scientists attributed this experience to what they called persistence of vision, whereby the eye retains a visual image for a fraction of a second after the source has been removed. The eye’s retention of a visual image, now known as positive afterimage, has long been considered a founding principle of motion pictures, even though its relationship to the perception of motion is still not well understood.
Video cassettes and recorders i.e. VCRs are another form of this recording system. But to use them TV is a mandatory thing as it has to record visuals with the audio. Invention of VCR added a lot to the usefulness of recording system and of course communication. For development purposes, promoting education and running awareness campaigns VCRs are equally used with cassette player or tape recorders/ players. Cassette players in the form of Walkman’s are also used on a large scale especially by youngsters/ teenagers for entertainment and fun