Method for realizing long space inside strong directionality sound system

Abstract

A method for realizing a long space inside strong directionality sound system relates to a method for increasing the speech intelligibility of a public broadcasting system by enhancing the directionality of the sound system. The method solves the problem in the prior art that the sound transmission quality is affected by the interference of over-high background noise or over-long reverberating time to the sound source of a long space public broadcasting system. The method comprises the steps of: presetting the type and performance parameters (mainly comprising vertical directivity and horizontal directivity) of a selected loudspeaker set according to the height and width of a long space main body, a horizontal interval of a structure column grid and a sound absorbing condition of the inner interfaces thereof, adjusting the position parameter of the loudspeaker set and calculating the mounting quantity and arrangement interval, configuring the working parameters of each loudspeaker seton the preset position, and mounting the loudspeaker set after adjusting the preset position of each loudspeaker set by comprehensively considering various influencing factors. The method is fit for mounting the sound system in a long space higher than 4 meters and in the place where the sound absorbing factors of the interfaces are not undersized.

Description

technical field [0001] The invention relates to a method for realizing a strong directivity sound source system. Background technique [0002] Long space is a relatively common and representative space form. Long space divided from the perspective of architectural acoustics refers to a space whose width and height are roughly similar, and whose length is more than 6 times the width and height. Subway stations, underground commercial Streets, long corridors and some terminal halls all belong to the category of long spaces. This type of space generally has a long reverberation time due to the large scale in the length direction, and the high density of people in the closed space creates high background noise; under such acoustic conditions, it is difficult to obtain a better language clarity. [0003] Long spaces are generally non-diffusing sound fields, and the decay of sound energy does not follow the exponential law. The sound pressure level decays nonlinearly with the in...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that the sound source system currently used for public broadcasting in a long space is affected by the interference of too high background noise or too long reverberation time, which affects the quality of sound transmission, thereby providing a sound source system that enhances the directivity, The method of further improving the language clarity of the public broadcasting system