A system and method are provided for forming crowds of users and providing access to corresponding crowd data. The computer system includes a computer apparatus and the computer apparatus includes a housing. The additional coding rate for transmitting the prediction parameters for the renderable portion may be kept low as this merely aims at forming a continuation of the parameter history across the renderable portion to serve as a basis for prediction parameters of other portions of the multi-view signal. The secondary chamber can include regions that can be adjusted to different pressures.