Array transmission line active vehicle-mounted sound system

Abstract

The invention discloses an array transmission line active vehicle-mounted sound system, which comprises a vehicle-mounted host, an external sound source, a signal switching control device, an array transmission line sound device arranged on the background of a carriage, and front sound field loudspeakers on the two sides of the foreground of the carriage, wherein the array transmission line sounddevice consists of a low-frequency sound box and at least eight independent full-frequency sound boxes arranged on the low-frequency sound box; the two ends of the low-frequency sound box are provided with a sound guide hole respectively; the sound guide holes at the two ends of the low-frequency sound box are communicated with each other through a tortuous transmission line formed by baffle plates; 40 to 50 percent of the volume given by a low-frequency loudspeaker is released through the sound guide holes at the two ends; and the independent full-frequency sound boxes form an array linear combination to give a sound synchronously. The array transmission line active vehicle-mounted sound system has an integrated design, a compact structure, small space occupation, and flexible, simple and convenient installation; a structure installation of the system is integrated with a sound field environment in an automobile carriage, so the sound system has clear and full sound quality, good fidelity, high sound density and high electroacoustic transformation efficiency.

Description

technical field [0001] The invention relates to an audio system, in particular to an array transmission line active vehicle audio system. Background technique [0002] The interior of the car compartment is a special sound field. Not only is the listening area and volume small, and it cannot accommodate large-volume speakers, but there are two different acoustic environments in the same space: the upper part of the compartment is composed of the roof, front and rear windshields and two The side door glass forms a space with strong reflection sound field, and soft materials such as soft seats, carpets, and patches in the lower part of the car absorb a large amount of sound waves. It will change the direction of the sound wave to form diffusion, thus forming a complex sound field space that absorbs and diffuses reflection. This special acoustic condition has multiple negative effects on the original frequency response characteristics of the audio system and the listening effe...

AI Technical Summary

Problems solved by technology

The traditional transmission line speaker has a sound guide hole on the box body, and a tortuous transmission line is set at the back of the sound guide hole to extend to the speaker in the speaker box. This transmission line is unidirectional, although it can improve the bass to a certain extent. effect, reducing the volume of the speaker, but still unable to adapt to the environment of the car cabin

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