Sounder

Abstract

The invention discloses a sounder, which comprises a high-frequency loudspeaker, more than one medium-frequency and / or low-frequency loudspeaker, inverter tubes and a bracket, wherein the high-frequency loudspeaker, the medium-frequency and / or low-frequency loudspeakers and the inverter tubes are fixed with the bracket; the medium-frequency and / or low-frequency loudspeakers correspond to independent inverter tubes one by one; one end of each inverter tube is over against each medium-frequency and / or low-frequency loudspeaker; the cross section of each inverted tube is circular; and the axial central line of each inverter tube is in smooth transition. The invention has the advantages that: sound waves of each loudspeaker are not interfered with those of other loudspeakers and the phenomenon of diffraction of sound waves at edges and corners is reduced to the maximum extent, so that the listening effects of accurate sound positioning, high resolving power, extremely good speed sense, pure and natural playback undertone and sweet and fine alt; the sounder has a simple structure and fashionable appearance; and the length of each inverted tube can be designed as required, and a length adjusting mechanism of the inverted tube is easy to design and can be used for adjusting the length of the inverter tube conveniently.

Description

a sound technical field The invention relates to a sound, in particular to a sound with an inverted tube. Background technique In the speaker system, there are mainly two types of closed-box and inverted-phase designs, and the inverted-phase design is widely used because of its high efficiency, deep low-frequency dive and wide application range. In the design of inverted speakers, the traditional structure of the inverted tube as the opening of the speaker is a fixed-length PVC tube or paper tube. The bass radiated from the back of the speaker unit passes through the inverted tube to cause a phase lag. The energy of the speaker can be strengthened at the same time, and the method of increasing the bottom tone can achieve the purpose of high efficiency. The inverter tubes of the speakers sold on the market are all installed on the box body, and the negative sound waves sent by all mid-range speakers and woofers need to pass through the box body and then pass through the in...

AI Technical Summary

Problems solved by technology

The second is the fixed length of the inverter tube and the fixed cross-sectional area of ​​the orifice. Without changing the structure of the inverted tube, it is impossible to adjust the length of the inverted tube and the size of the cross-sectional area of ​​the orifice.

Adopting such a cross-sectional area adjustment mechanism, although it is only necessary to change the relative position of the air baffle and the sound wave inlet or outlet of the inverter tube, the cross-sectional area of ​​the sound channel of the inverter tube can be adjusted, which is convenient to adjust, and the sound wave channel cut-off of the inverter tube The size of the area can be adjusted continuously, but the structure is complex and takes up a lot of space in the box, which will greatly increase the volume of the box and increase the manufacturing cost

The third is that due to the limitation of the size of the cabinet, the length of the inverter tube is not enough, and it is easy to produce high-frequency sound waves and noises that are carried in the low-frequency sound waves. The defect that the high-frequency sound waves and noises in the low-sound waves will also pass out of the box without being completely attenuated.

Although this utility model can reduce the high-frequency sound and noise generated in the speaker to be transmitted out of the speaker, it greatly increases the edges and corners in the box, so this kind of box structure is more likely to produce harmful standing wave components, and the sound waves are diffracted on the edges and corners of the box. It affects the phase accuracy, and it is easy to cause peaks and valleys in the response of the mid-frequency band, which narrows the directivity of the mid-high frequency.

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