Audio Visual Systems
Audio-visual (AV) means possessing both a sound and a visual component, such as slide-tape presentations, films, television programs, church services and live theatre productions. Audio-visual service providers frequently offer web streaming, video conferencing and live broadcast services. It is clear that audio-visual aids are important tools for the teaching-learning process. It helps the presenter to present the lesson effectively and students learn and retain the concepts better and for a longer duration.