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Acoustic devices and electronic equipment

An acoustic device and electronic equipment technology, applied in the field of electronic equipment and acoustic devices, can solve the problems of damaging the acoustic performance of the speaker unit, affecting the service life of the speaker unit, and negative effects on the sensitivity of the acoustic system, so as to improve the low-frequency sensitivity, and the force is uniform and soft , the effect of reducing the resonance frequency

Active Publication Date: 2022-04-26
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems in the above two methods. The first method of adding sound-absorbing materials to the cabinet needs to achieve good sealing and packaging of the sound-absorbing materials. Otherwise, if the sound-absorbing materials enter the speaker unit, it will damage the acoustic performance of the speaker unit and affect the speaker unit. The service life of the second type of passive radiator is adopted. Near the resonant frequency point fp, the passive radiator radiates strongly, and the sound unit almost stops. Therefore, the high-sensitivity design of the passive radiator can be used to realize the acoustic system in the frequency band near fp The local sensitivity is enhanced; but in the frequency band below fp, the phase of the passive radiator and the sound wave of the sounding unit are opposite, the sound waves cancel each other out, and the passive radiator has a negative effect on the sensitivity of the acoustic system
All in all, the passive radiator can only improve the sensitivity of the frequency band near the resonance point, but cannot improve the sensitivity of all low frequency bands.

Method used

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  • Acoustic devices and electronic equipment
  • Acoustic devices and electronic equipment
  • Acoustic devices and electronic equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Such as Figure 3A As shown, an acoustic device includes a sounding unit 1, wherein, in this embodiment, the sounding unit 1 is a miniature sounding unit, more specifically, the sounding unit 1 is a miniature moving coil speaker. The sound unit 1 generally includes a housing and a vibration system and a magnetic circuit system fixed in the housing. The vibration system includes a vibrating diaphragm 11 fixed on the housing and a voice coil combined with the vibrating diaphragm 11. The magnetic circuit system is formed with The magnetic gap, the voice coil is set in the magnetic gap, and the voice coil reciprocates up and down in the magnetic field after being fed with alternating current, thereby driving the vibrating diaphragm 11 to vibrate and produce sound.

[0046] The acoustic device is provided with a sound outlet 4, and the sound waves on the front side of the vibrating membrane 11 are radiated to the outside through the sound outlet 4, and the sound waves on the...

Embodiment 2

[0077] The main difference between this embodiment and the above-mentioned embodiments is that in this embodiment, a plurality of sounding units 1 and first airtight chambers 21 are provided in one-to-one correspondence, and a second airtight chamber 31 is provided, and each of the first airtight chambers Each cavity wall of the cavity 21 is provided with a flexible deformation part. Specifically, such as Figure 7 As shown, the acoustic device in this embodiment includes two sounding units 1, and two first airtight cavities 21 are correspondingly designed at the same time, the second airtight chamber 31 is one, and the cavity walls of the two first airtight cavities 21 Flexible deformation portions 22 are respectively designed. This design can facilitate the application in the case of an acoustic device or system that requires multiple sounding units 1 , such as stereophonic or array design requirements. The number of first airtight chambers in this embodiment may also be o...

Embodiment 3

[0079] This embodiment discloses an electronic device 5, such as Figure 8 and Figure 9 As shown, the acoustic device in the above-mentioned embodiments is installed on the electronic device 5, which may be a mobile phone, a tablet computer, a notebook, and the like.

[0080] The electronic device 5 specifically includes a casing of the electronic device, and at least a part of the casing of the electronic device is used to form the first airtight cavity 21 and / or the second airtight cavity 31 of the acoustic device. That is, part or all of the cavity wall of the first closed cavity 21 is formed by the casing of the electronic device, or part or all of the cavity wall of the second closed cavity 31 is formed by the casing of the electronic device, or, Part or all of the cavity walls of the first sealed cavity 21 and the second sealed cavity 31 are formed by the casing of the electronic device. In the present invention, the casing of the electronic device doubles as the cavi...

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Abstract

The invention discloses an acoustic device and electronic equipment, comprising: a sounding unit, a first casing, the sounding unit is installed on the first casing to form a sounding assembly, the vibrating diaphragm of the sounding unit is connected with the first casing A first airtight cavity is formed between a shell, and a flexible deformation part is provided on the first shell; the acoustic device includes a second shell, and the gap between the second shell and the first shell is forming a second airtight chamber, the flexible deformation part is located between the first airtight chamber and the second airtight chamber; in the first airtight chamber, and is located between the sound unit and the flexible deformation part There is an acoustic resistance material used to slow down the airflow velocity. The acoustic device in the present invention can effectively reduce the resonance frequency, greatly improve the low-frequency sensitivity of the product as a whole, and improve the listening effect.

Description

technical field [0001] The present invention relates to the technical field of acoustics, and more specifically, to an acoustic device and electronic equipment installed with the acoustic device. Background technique [0002] Generally speaking, the acoustic system of the traditional structure (prior art 1) includes a closed box and a sounding unit arranged on the closed box, and a cavity is formed between the closed box and the sounding unit, because the cavity in the acoustic system Due to volume limitations, it is difficult for an acoustic system, especially a small acoustic system, to achieve a satisfactory reproduction of bass. Conventionally, in order to achieve satisfactory bass reproduction in an acoustic system, two methods are usually used. One is to place sound-absorbing materials (such as activated carbon, zeolite, etc.) in the box of the acoustic system for adsorption or desorption. The gas in the body has the effect of increasing the volume and reducing the lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R7/00G10K11/162H04R1/02
CPCH04R7/00G10K11/162H04R1/02
Inventor 周树芝
Owner GOERTEK INC
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