A ring screen system for creating surround sound effect in cinema projection hall

Abstract

The invention discloses a surrounding screen system for creating a surround stereo effect of a cinema screening room. The surrounding screen system comprises curtains arranged on the walls at the four sides of the screening room along the circumferential direction of the screening room; a through ring-shaped sound cavity is formed between the curtains and the walls, an opening is formed in the top of the ring-shaped sound cavity, and the bottom of the ring-shaped sound cavity is connected in a closed way by the curtains; sound boxes are arranged on the walls, positioned in the ring-shaped sound cavity, of the screening room; connecting support devices used for fixing the curtains are respectively arranged on the walls at the four sides of the screening room; the connecting support devices comprise support frames respectively arranged on the walls at the four sides; the support frames are connected with connecting pipes which are used for fixing the curtains on all the walls and enabling the curtains on all the walls to be connected with one another so as to form the ring-shaped sound cavity, and are also connected with adjusting mechanisms used for adjusting the distances between the curtains and the walls. The surrounding screen system is simple in structure and convenient to install, can well create the surround stereo effect of the screening room, and is uniform in sound field distribution and free from noise.

Description

technical field [0001] The invention relates to the field of theater sound effect equipment, in particular to a ring screen system for creating surround stereo sound effects in a movie theater projection hall. Background technique [0002] Sound technology has evolved from monophonic to stereophonic, and the latest innovative digital surround sound technology. The term stereophonic colloquially refers to the method of sound reproduction in which the illusion of directionality and auditory perspective is created. The creation of the illusion is usually achieved by using two or more independent audio channels in a configuration of two or more speaker systems. Thus, the term "stereo" applies to so-called "quadphonic" and "surround" systems, as well as to dual-channel, 2-speaker systems. Mono sound is still widely used in today's context where a stereo device uses high bandwidth. [0003] Some prior art systems and methods employ multiple high end digital circuits to produce ...

AI Technical Summary

Problems solved by technology

These two methods not only greatly increase the cost of sound equipment, but also the structure and installation of the projection hall are more complicated, which is not suitable for popularization and application.

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