Pneumatic omni-directional loudspeaker and soundbox

Abstract

The invention belongs to the technical field of loudspeakers, and discloses a pneumatic omni-directional loudspeaker and a soundbox. The pneumatic omni-directional loudspeaker comprises a magnetic circuit system and a vibration system, wherein the vibration system comprises an annularly arranged pneumatic vibrating diaphragm and a voice coil arranged on the pneumatic vibrating diaphragm; the magnetic circuit system comprises an annularly arranged magnetic group; and the magnetic group comprises an inner magnetic group arranged at the inner side of the vibration system and / or an outer magnetic group arranged outside the vibration system. By means of the pneumatic omni-directional loudspeaker and the soundbox disclosed by the invention, a uniform magnetic field on an annular surface is provided through the annularly arranged magnetic group; therefore, the annularly arranged pneumatic vibrating diaphragm can vibrate and produce sound in the 360-DEG annular direction; the sound production range of the loudspeaker is effectively enlarged; in addition, the pneumatic vibrating diaphragm transmits sound by extruding air; therefore, the vibration efficiency is relatively high; the sound driving capability is relatively high; and the sound expression of the loudspeaker is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of loudspeakers, and relates to a pneumatic omnidirectional loudspeaker and a sound box. Background technique [0002] Currently commonly used speakers are mainly divided into moving coil, electrostatic (capacitive) and planar diaphragm according to their different sounding principles. Among them, the moving coil type and the planar diaphragm type use electromagnetic force to transduce sound, that is, in a fixed magnetic field, a changing electromagnetic field is generated by controlling the voice coil current, thereby driving the diaphragm to vibrate and sound; while the electrostatic (capacitive) type uses static Power transduction to produce sound means that the charged diaphragm is placed in an electric field, and the electrostatic force between the diaphragm and the charge on the plate is used to drive the diaphragm to vibrate and produce sound. [0003] The speakers in the prior art can effectively re...

AI Technical Summary

Problems solved by technology

[0004] However, the inventor found in the process of realizing the present invention that the loudspeaker in the prior art relies on the vibration of the diaphragm to produce sound, but is limited by the direction of the acting force, and the directionality of the vibration of the diaphragm is strong, so the sound emitted by the loudspeaker has Strong directivity, which greatly limits the range of sound reception

The speakers in the prior art are suitable for earphones or fixed-position listening, but in some specific application scenarios, such as when the location is not fixed or when many people listen to it in multiple locations around, it is difficult to guarantee the actual sound effect

In addition, even for electrostatic (capacitive) or planar diaphragm speakers with better sound quality, it is necessary to push the entire sounding unit (that is, the diaphragm) to move together when making a sound, and it can only produce sound effectively under a certain vibration amplitude (that is, it needs to be controlled by the vibration diaphragm). Film produces enough thrust); Simultaneously because of the limited total area of ​​the sound emitting unit, the ability to push a large amount of air to transmit sound is limited. Therefore, the speaker in the prior art performs poorly in terms of resolution and transient response, and its high The sound quality of the frequency band is not ideal

Images