CN206728246U

CN206728246U - A kind of double MIC drop wind is made an uproar bluetooth earphone

Info

Publication number: CN206728246U
Application number: CN201720396119.4U
Authority: CN
Inventors: 董�成
Original assignee: Sound Source Technology (shenzhen) Co Ltd
Current assignee: Sound Source Technology (shenzhen) Co Ltd
Priority date: 2017-04-17
Filing date: 2017-04-17
Publication date: 2017-12-08
Anticipated expiration: 2027-04-17

Abstract

Made an uproar bluetooth earphone, including bluetooth earphone housing (5) and the first MIC (1) the utility model discloses a kind of double MIC drop wind；The bluetooth earphone housing (5) sets MIC pickups hole；Overhead gage (3) is set, right baffle-plate (2), right shell body (4) forms cavity with the earphone case (5), first MIC (1) is set under overhead gage (3), and the first MIC (1) is located on the MIC pickups hole and is placed in cavity；First MIC (1) connects active noise reduction chip AMS AS3415 inputs, and the active noise reduction chip AMS AS3415 connection processor modules, sets the 2nd MIC to be placed in cavity, and the 2nd MIC connection processor modules.The design that the utility model passes through cavity, sound produces refraction when being sent to MIC, so designs can and allows wind not to be directly entered acoustic control when blowing over and, is made an uproar so as to filter out 70% 80% wind, simultaneously by active noise reduction techniques, environmental noise reduce further.

Description

A kind of double MIC drop wind is made an uproar bluetooth earphone

Technical field

Call noise reduction field is the utility model is related to, specifically a kind of double MIC drops wind are made an uproar bluetooth earphone.

Background technology

With the popularization more and more higher of terminal, particularly mobile terminal and Bluetooth function, technology is also more and more ripe, blue The application of tooth earphone is also increasingly extensive.And bluetooth earphone not only listens song function with common headphones, and there is call function.Mesh Preceding many people are conversed using bluetooth earphone, but when wind is walked greatly or against the wind, strong wind can be directly blown onto bluetooth Earphone MIC pickups, other side can hear very big wind noise when call, can thus influence speech quality.

Utility model content

In view of the above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of new double MIC drop wind Make an uproar bluetooth earphone, the utility model produces refraction when being sent to MIC, so design can by the design of cavity, sound Allow wind not to be directly entered acoustic control when blowing over and, made an uproar so as to filter out 70%-80% wind, while pass through active noise reduction skill Art, it reduce further environmental noise；Scheme of the present utility model solves the problems, such as speech quality during bluetooth earphone call, makes Other side hears that the call of we becomes apparent from.

To achieve these goals, this couple of MIC drop wind is made an uproar bluetooth earphone, including bluetooth earphone housing and the first MIC；It is described Bluetooth earphone housing sets MIC pickups hole；Overhead gage is set, and right baffle-plate, right shell body forms cavity with the earphone case, upper First MIC is set under baffle plate, and the first MIC is located on the MIC pickups hole and is placed in cavity；First MIC connects Active noise reduction chip AMS AS3415 inputs, and the active noise reduction chip AMS AS3415 connection processor modules are connect, if The 2nd MIC is put to be placed in cavity, and the 2nd MIC connection processor modules.

Further, the output end of the active noise reduction chip AMS AS3415 connects the processor module by serial ports Input port.

Further, the active noise reduction chip AMS AS3415 are encapsulated using QFN32.

Further, the processor module specifically uses single-chip microcomputer STM32F411 and its power module, crystal oscillator module, answered Position

The minimum system of module composition.

Compared with prior art, the beneficial effects of the utility model are as follows：

The utility model produces refraction when being sent to MIC by the design of cavity, sound, so designs can and allows wind

Acoustic control will not be directly entered when coming by blowing over, and be made an uproar so as to filter out 70%-80% wind, while pass through active noise reduction Technology,

It reduce further environmental noise；Speech quality when scheme of the present utility model solves bluetooth earphone call is asked Topic, makes

Other side hears that the call of we becomes apparent from.

Brief description of the drawings

Fig. 1 is vertical section schematic diagram of the present utility model；

Fig. 2 is circuit module schematic diagram of the present utility model.

Embodiment

The utility model is described further below in conjunction with the accompanying drawings.

The bluetooth earphone as shown in figure 1, this pair of MIC drop wind is made an uproar, it is characterised in that including bluetooth earphone housing 5 and first MIC1；The bluetooth earphone housing 5 sets MIC pickups hole；Overhead gage 3, right baffle-plate 2, right shell body 4 and the earphone case are set 5 form cavitys, and the first MIC1 are set in overhead gage 3 time, and the first MIC1 is located on the MIC pickups hole and is placed in cavity It is interior；The first MIC1 connections active noise reduction chip AMS AS3415 inputs, and the active noise reduction chip AMS AS3415 Processor module is connected, sets the 2nd MIC to be placed in cavity, and the 2nd MIC connection processor modules..

Further, the processor module specifically uses single-chip microcomputer STM32F411 and its power module, crystal oscillator module, answered Position mould

The minimum system that block is formed.

Implementation steps of the present utility model are as follows：

Sound enters in the cavity from the MIC pickups hole, and sound produces refraction when being sent to MIC, and then filters A part of noise；The processor module is connected to by signal processing circuit after the 2nd MIC pickups sound；Described first After MIC pickup sound, encoded by active noise reduction chip analysis noise signal, and to the anti-phase processing of noise signal to processor, The anti-phase processing coding of sound signal is added to the 2nd MIC acoustic codings by the processor, so as to realize active noise reduction to noise signal, It ensure that the fidelity integrally conversed.

Claims

The bluetooth earphone 1. a kind of double MIC drops wind are made an uproar, it is characterised in that including bluetooth earphone housing (5) and the first MIC (1)；It is described Bluetooth earphone housing (5) sets MIC pickups hole；Overhead gage (3), right baffle-plate (2), right shell body (4) and the earphone case are set (5) cavity is formed, the first MIC (1) is set under overhead gage (3), and the first MIC (1) is located on the MIC pickups hole simultaneously It is placed in cavity；First MIC (1) connects active noise reduction chip AMS AS3415 inputs, and the active noise reduction chip AMS AS3415 connection processor modules, the 2nd MIC is set to be placed in cavity, and the 2nd MIC connection processor modules.
The bluetooth earphone 2. a kind of double MIC drops wind according to claim 1 are made an uproar, it is characterised in that the active noise reduction chip AMS AS3415 output end connects the input port of the processor module by serial ports.
The bluetooth earphone 3. a kind of double MIC drops wind according to claim 1 are made an uproar, it is characterised in that the active noise reduction chip AMS AS3415 are encapsulated using QFN32.
The bluetooth earphone 4. a kind of double MIC drops wind according to claim 1 are made an uproar, it is characterised in that the processor module tool The minimum system that body is formed using single-chip microcomputer STM32F411 and its power module, crystal oscillator module, reseting module.