Unlock instant, AI-driven research and patent intelligence for your innovation.

Loudspeaker device

A device and sound hole technology, which is applied in the field of electroacoustics, can solve the problems of dry sound playback effect and poor sound playback effect, and achieve the effect of expanding the range of bass pronunciation and increasing the efficiency of pronunciation

Active Publication Date: 2014-12-17
湖南盈准科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coupled with the limitation of space, it is impossible to give enough space for electro-acoustic design to expand the bass pronunciation range of the speaker, so that the sound playback effect of small handheld devices such as mobile phones and tablet computers is very dry, without bass, and the sound playback effect is very low. poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Loudspeaker device
  • Loudspeaker device
  • Loudspeaker device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The above-mentioned loudspeaker device will be further elaborated below through specific embodiments and accompanying drawings.

[0025] see figure 1 , a loudspeaker device 100 in one embodiment includes a cavity 10 and a speaker 20 .

[0026] Please also see figure 2 , the cavity 10 includes a bottom plate 11 and a box body 12 . In this embodiment, the bottom plate 11 is a rectangular plate, and the box body 12 includes a rectangular cover plate 121 and four side walls 122 surrounding the cover plate 121 . The box body 12 is covered on the bottom plate 11 to form a square and airtight receiving cavity 13 .

[0027] It can be understood that, in other embodiments, the shape of the cavity 10 is not limited to a square, and may be other shapes such as a circle and an ellipse.

[0028] Both the wall thickness of the base plate 11 and the box body 12 are 0.4-0.5 mm, and the volume of the cavity 10 is 0.5-3 cubic centimeters. Therefore, the volume of the cavity 10 is s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A loudspeaker device comprises a cavity and a loudspeaker. Wall thickness of the cavity is 0.4-0.5 millimeter, volume of the cavity is 0.5-3 cubic centimeter, a plurality of air permeable polystyrene foams are arranged on the inner wall of the cavity, and a sound hole is arranged on the cavity. The loudspeaker is mounted in the sound hole and is contained in the cavity. The loudspeaker is contained in the smaller cavity by the loudspeaker device, so that the volume of the loudspeaker device is smaller. Since the air permeable polystyrene foams are arranged on the inner wall of the cavity, two different air permeable passages are produced inside the cavity. By the aid of the method that magnification acoustic resistance is produced to a low-frequency portion of the loudspeaker through the two different air permeable passages of the cavity, sounding efficiency of a bass portion of the loudspeaker device is increased, so that sound can be produced in an ultra-low-frequency range of the loudspeaker which originally can't produce sound, and sounding scope of bass of the loudspeaker is expanded. Therefore, the loudspeaker device is smaller in size and the bass can be produced.

Description

technical field [0001] The invention relates to the technical field of electroacoustics, in particular to a loudspeaker. Background technique [0002] Traditional acoustics judges the bass frequency that the speaker can emit based on the volume of air that is driven (the area of ​​the speaker diaphragm x the effective stroke of the speaker). The larger the volume of air pushed, the lower the bass frequencies that can be produced. Small-diameter speakers in small handheld devices such as mobile phones and tablet computers cannot emit low bass due to their small diaphragm area and limited structure. Coupled with the limitation of space, it is impossible to give enough space for electro-acoustic design to expand the bass pronunciation range of the speaker, so that the sound playback effect of small handheld devices such as mobile phones and tablet computers is very dry, without bass, and the sound playback effect is very low. poor. Contents of the invention [0003] Based ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/06H04R9/02
Inventor 李曙王吉顺
Owner 湖南盈准科技有限公司