Document qa3OZzrdqyKbYReZ5ne747gaG

AUDIO-VISVAL AIDS Closed-circuit TV has been employed to ad vantage in special situations involving ex treme hazards or through relay or by the use of several monitor sets, to multiply its effec tiveness However, most other visuals are less complicated to produce and employ. Ulus, closed-circuit television ordinarily is not feasible for use as a safety aid exclusively Radio Radio can serve as a medium to promote accident prevention through scheduled pro grams on various aspects of home, traffic, and community safety. Spot announcements con cerned with traffic safety, for instance, com monly are broadcast at frequent intervals by local stations during long bohday periods such as the Labor Day weekend Audio Aids Commercial recordings Purely audio aids include tape recorders, radio, commercial recordings and public address systems Tape recorders A tape recorder can be used in a number of ways One safety man, using a batteryoperated recorder, dictates a running com mentary while photographing safe or unsafe operating conditions, new processes or equip ment that require subsequent study This method proves easier than writing notes After being edited, the tape is used with the slides to male up a training tool. A tape recorder can record minutes in safety meetings, valuable discussion m train ing sessions, and on-the-job interviews which may prove useful later for bulletins, newsletters, and future meetings A well-known speaker on audio-visual aids even uses a tape recorder to "argue with himself" at meetings. Tapes can also be prerecorded in different languages for foreign speaking workers Music, special sound effects, and even dra matic episodes on commercial recording can be added to safety talks, slide scripts, and the like, to give a professional touch Public address systems A public address system is a useful too! for making safety announcements, directing emergency evacuations, and perhaps even publicizing unusual safety achievements There is some question as to whether pub lic address systems should be used to broad cast safety messages on the job Some ad ministrators feel that music or messages might prove dangerously distracting to work ers at moving machinery or on other work which requires full attention This technique may not be effective and may even draw complaints if used excessively. Portahle public address systems have been used by supervisors and safety men as an aid in on-the-job meetings, either to help over come extraneous noise or to create a dramatic effect References Association of National Advertisers, 155 EaBt 44th St, New York City Audio-Visual Handbook Dale, Edgar Audio-Visual Methods in Teaching, rev ed New York, Holt, Reinhart and Winston, Inc, 1954 Hass, Kenneth B, and Harry Q Packer Preparation and Use of Audio-Visual Aids, 3rd ed Engle wood Chile, N J, Prentice-Holl, Inc , 1955 Kinder, James S Audio-Visual Materials and Techniques New York City, American Book Com pany, 1959 National Audio-Visual Association, Inc, 1201 Spring St, Fairfax, Va Audio-Visual Equipment Directory. National Education Association, Department ol Audio-Visual Instruction, 1201 16th St NW, Washington, DC National Safety Council, 425 North Michigan Ave, Chicago, HI Photography lor the Industrial Safety Man. Data Sheet 500. National Visual Presentation Association, 19 West 44th St, New York City U S. Office el Education, Visual Education Service, Washington, D C Wittich, Walter A, and C F. Schuller Audio-Visual Materials Their Nature and Doe, 3rd ed New York, Harper and Brothers, 1962 13-22