Train mobile high definition digital cinema

Abstract

The invention discloses a train mobile high definition digital cinema which comprises a carriage body, a power amplifier arranged inside or outside the train carriage body, as well as a display screen, a main sound box, a plurality of surround sound boxes, a center-channel speaker and a plurality of woofers that are connected with the power amplifier; wherein the display screen is arranged in the middle of the front wall of the train carriage; the main sound box is arranged at the upper part of the front wall of the train carriage; the surround sound boxes are respectively arranged at the upper parts of the left, the right and the rear walls; the center-channel speaker is positioned at the middle side of the upper part of the train carriage; and the woofers are respectively arranged at the lower part inside the train carriage. As the display screen, the main sound box, the surround sound boxes, the center-channel speaker and the woofers are installed at the specific positions of the train carriage, the sound effect is good, and the sound radiation direction can be spread according to the set direction and distance; furthermore, the spread speed of sound wave is limited, so that the distribution of sound field is uniform, the generated sound has strong stereo feeling and high impact, and the using effect is better. The train mobile high definition digital cinema can be widely applied to the railway transportation.

Description

technical field [0001] The invention relates to a high-definition digital cinema, in particular to a train mobile high-definition digital cinema. Background technique [0002] The train theater is a brand-new concept, it is built in the train compartment, and is used to play various high-definition movies or music to the passengers on the train, bringing passengers a new visual and auditory enjoyment, and increasing the comfort of the passengers on the journey , improve the passenger ride environment, and improve the level of humanized railway transportation services. The train theater needs to refer to the model and technical standards of the fixed movie theater, and combine the characteristics of the train and the use environment to design it. It must meet the requirements of working in different environments, and the sound system is the key to the train theater. [0003] The train is easily affected by bumps, dust, etc. during the running process, especially the audio pa...

AI Technical Summary

Problems solved by technology

[0003] The train is easily affected by bumps, dust, etc. during the running process, especially the audio part. Due to the structural characteristics of the train, it will cause many adverse effects on the sound: the structure of the train carriage is relatively special, the width is narrow, the length is too long, and the length and width Uncoordinated proportions can easily cause uneven distribution of the sound field, resulting in the loud sound of the front part with speakers, low sound of parts without speakers, strong center and weak corners; moreover, the sound absorption effect of the walls around the car is poor, and the sound waves pass through many times. There are reflections from various interfaces in the center of the sound field, forming a "reverberation phenomenon", resulting in insufficient language clarity, turbid sound, and loss of sound details; The background noise is large (above 50 decibels), the separation is not enough, etc., so the control of noise is also a technical problem that is difficult to solve

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