3.1 Preservation And Conservation Of Audio-Visual Materials Case Study

3.0 Recommendation/Solution

3.1 Preservation and Conservation of Audio-visual Materials

Magnetic materials, which can be used for sound recording and for optical recording in film and television. An historical account of the development of the use of magnetic media in radio, television and film applications accompanies practical insights in to the conservation requirements of the medium. There are two recording systems that are widely used such as analogue recording and digital recording. A discussion of magnetically recorded information enters the realm of machine readable records. That is a significant statement because it comes with it wide-ranging implications. Human readable records can be read and understood with the human eye including
Film formats included in general special collections can include regular 8mm, Super-8mm, 9.5mm, 16mm, and 35mm gauges. Acquisitions can include films with magnetic sound stripes or original reversal or magnetic soundtrack and prints with optical tracks. Films can be stored on cores, daylight spools, reels, or loosely lying in cans; and stored in metal cans, in plastic and fiber shipping containers, or in original cardboard boxes. Unfortunately, film can be damaged from use by either humans or machines. That’s why the originals should never be used or only access copies should be used by staff and researchers. Film also can be easily scratched. The deterioration of films cannot be stopped but can be retarded by conversation steps. Firstly, Macro storage environment. Films should be stored in a cold and dry environment. Original colour films should be stored at the coldest possible temperature to reduce colour fading. Besides, 0º F for colour films is preferred, but if not realistic, 30º F with 25-35% RH is sufficient. Black and white originals can be stored at 25-50º F with 25-35% RH. Secondly, Micro storage environment that store films on cores, not on reels. The exception is with Super-8 films, which should be stored on plastic reels. Moreover, films are store in inert plastic polypropylene cans. Then, remove all paper from inside cans. Do not store magnetic fullcoat in the same can with its corresponding workprint or reversal. Magnetic
First of all, physical defences. One of the physical defences is perimeters. A well-designed and well-maintained perimeter fence or wall provides a first line of defence. It can also serve as warning of approach to the premises, especially if monitored by alarms and CCTV. The presence of bright security lighting, particularly if is triggered by PIR detectors, provides a cost-effective deterrent in defined areas. Next, building protection. An efficient intruder detection system will quickly identify an intrusion and cause a message to be passed to the police to respond, but it provides no form of resistance to the intruder. This can only be done by physical means, which can deter and often defeat the intruder, or at least buy time for police to attend in response to the alarm. The nature of the collection, its value and its portability will influence the degree of protection provided. In other hand, the new buildings. Basic security measures can be designed into new buildings. Hence, security advice taken at this stage may avoid the need for additional measures later on that might spoil the building’s appearance. Furthermore, as the shell of the building is usually regarded as the security perimeter, the number of openings should be limited to those necessary for access. Provision needs to be made to ensure that different types of areas, including stores and temporary exhibition spaces, can be kept in a