The first delay effects were achieved using tape loops improvised on reel-to-reel magnetic recording systems. By shortening or lengthening the loop of tape and adjusting the read and write heads, the nature of the delayed echo could be controlled.
Definition of VM. In Lawrence Associates' Virtual Manufacturing User Workshop report, Virtual Manufacturing (VM)is defined to be an integrated, synthetic manufacturing environment exercised to enhance all levels of decision and control. Design-Centered VM: provides manufacturing information to the designer during the design phase.
On one hand, in [3] VM is represented as a virtual world for manufacturing, on the other hand, one can consider virtual reality as a tool which offers visualization for VM [4]. The most comprehensive definition has been proposed by the Institute for Systems Research, University of Maryland, and discussed in [5,6].Virtual Manufacturing is defined as âan integrated, synthetic manufacturing environment exercised to enhance all levels of decision and controlâ (Fig. 1).he most comprehensive definition has been proposed by the Institute for Systems Research, University of Maryland, and discussed in [5,6]. Virtual Manufacturing is defined as âan integrated, synthetic manufacturing environment exercised to enhance all levels of decision and controlâ (Fig. 1).