CN106028193A

CN106028193A - Denoising earphone

Info

Publication number: CN106028193A
Application number: CN201610516660.4A
Authority: CN
Inventors: 华峰君
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-30
Filing date: 2016-06-30
Publication date: 2016-10-12

Abstract

The invention discloses a denoising earphone. The denoising earphone comprises a master shell and a front shell of an earphone body part. The master shell and the front shell form a hollow bowl-shaped structure with an internal space S. An internal division wall is defined in the internal space S. The internal space S is divided into a first space S1 and a second space S2 by the internal division wall. The first space S1 and the second space S2 are independent. A conversion unit for converting audio input signals into sound save signals is arranged in the first space S1. A microphone for receiving external environment noises is arranged in the second space S2. An adjusting hole is arranged on the wall of the master shell corresponding to the second space S2. The adjusting hole allows the external environment noises to be transmitted to the microphone. The external environment noises are not transmitted to an ear canal of a user. A door for adjusting open and close is arranged on the adjusting hole and is used for adjusting the magnitude of the external environment noises transmitted to the second space S2. The external environment noises received by the microphone can be adjusted in different states.

Description

A kind of noise cancelling headphone

Technical field

The present invention relates to a kind of field of audio devices, particularly relate to a kind of noise cancelling headphone being applicable to audio frequency apparatus.

Background technology

Audio frequency apparatus, typically such as earphone, has become as portable electric appts, such as mobile phone, PDA, PC etc. must Want one of accessory.The generally structure of earphone includes: headset plug, it is used for receiving electronic signal；Speaker, for by electronics The audio signal of equipment output is converted to voice output.Along with popularizing of mobile communication technology, earphone also needs to accordingly increase wheat Gram wind function, so that user can realize call function.

Even if the noise-reducing design of earphone is generally realized by feedback at present, it is common that given design object, certain optimization is applied to set Meter method obtains the controller frequency characteristic optimized, and uses digital feedback or analog feedback to realize.

Noise cancellation method is designed to by using audio frequency apparatus (such as, earphone) to reduce undesired ambient sound.Environment The background sound that sound is referred to as occurring in any given position is arbitrarily downgraded.In order to design noise canceling system, audio-source (such as, ear Machine) the identical amplitude of the ambient sound having and occur at wearer's ear must be launched but the sound wave of contrary polarity.Ambient sound Ripple and the sound wave from earphone combine, and to form new ripple, wherein, effectively, at wearer's ear, are being referred to as phase place In the process eliminated, two ripples cancel one another out.Gained ambient sound waves is likely to be at such low amplitude, to such an extent as to will not for human ear Audible.

In use insert the In-Ear Headphones in the auditory meatus of user increasingly to catch on and portable type media apparatus and shifting Mobile phone is used along.The reason that these earphones are popular is because them and can isolate to the sound generation sent from earphone not The external noise of the impact of profit.

It is thus desirable to obtain environmental noise by mike, and earphone is made to export contrary waveform.But, noise isolation design Noise reduction is made to need the external noise received to become difficulty.

For solving this technical problem.The present inventor, through concentrating on studies, proposes a kind of scheme solving this technical problem.

Summary of the invention

Thus setting out, of the present invention to solve the technical problem that the noise cancelling headphone being to provide the input of a kind of scalable noise.

A kind of noise cancelling headphone, including for the main casing of headset main body part, procapsid, the meatus tube being attached on described procapsid, And it is attached at the earplug on described meatus tube；The hollow with internal space S is formed between described main casing and described procapsid Bowl structure, in described internal space S, definition has interior divider wall, described interior divider wall described internal space S to be divided For independent first space S 1 and second space S2；It is characterized in that: in described first space S 1, be provided with and audio frequency is inputted Signal is converted into the converting unit of acoustic signals；In described second space S2, it is provided with the mike receiving ambient external noise；

On the wall of described main casing corresponding for described second space S2, being provided with adjustment hole, described adjustment hole allows external environment condition to make an uproar Sound conducts to mike, but non-conducting is to the auditory meatus of user；Described adjustment hole is provided with and can regulate the door closed, to adjust Save the size of ambient external noise in incoming described second space S2.

Further, in described first space S 1, on the wall of described main casing, offer multiple and external communication pressure regulation Hole, so that the back pressure that described converting unit produces can discharge rapidly.

Further, the peripheral part of described meatus tube has annular relief, when described earplug coordinates with described meatus tube, anti- The described earplug being only nested on described meatus tube skids off.

Further, the radio reception central shaft of described mike and the playback central shaft of described converting unit are mutually perpendicular state.

The invention have the benefit that

1, adjustment hole 9 is adapted for variable noise regulation so that the environmental noise that mike receives can be in different states Under be adjusted, it may be necessary to close adjustment hole, reduce environmental noise input.

2, mike 6 is separated completely by interior divider wall 11 with converting unit 5 so that mike 6 is not by converting unit 5 Impact, thus mike will not be affected by the acoustical signal that converting unit exports.

3, the effect of regulator hole 21 so that the back pressure produced in converting unit 5 can discharge rapidly, thus alleviates back pressure Impact, and enhance the earphone result of broadcast to low-frequency sound.

Accompanying drawing explanation

Fig. 1 is the structural representation of first embodiment of the invention；

Fig. 2 is the structural representation of second embodiment of the invention.

Detailed description of the invention

Below in conjunction with specific embodiment, the present invention is further described, but does not limit the invention to these and be embodied as Mode.One skilled in the art would recognize that and present invention encompasses potentially included in Claims scope all alternative Scheme, improvement project and equivalents.

Embodiment 1

As shown in fig. 1, in earphone 10, including as earphone 10 main part main casing 2, procapsid 3, be attached at Meatus tube 31 on procapsid and earplug 4.

Meatus tube 31 is the parts that tubulose extends, and earplug 4 attaches on meatus tube 31, particularly, at meatus tube 31 Peripheral part has annular relief 32, when earplug 4 coordinates with meatus tube 31, prevents the earplug being nested on meatus tube 31 light Change places and skid off.

This earplug 4 has the cylinder-like part 41 being nested on meatus tube 31, turns back backward from the front end of cylinder-like part 41 Isolated part 42.Particularly, this isolated part 42 is formed as soft hemispherical, inserts the external ear in human ear at earplug 4 Behind road, can be in close contact with external auditory meatus, prevent the leakage of sound, enhance the earphone result of broadcast to low-frequency sound.Optionally, The material of this earplug is the material of flexible, compressible, includes but not limited to high-density foam, silicones, rubber etc..And this material Material preferably has great friction coefficient, has prevented landing.

Forming the hollow bowl structure with internal space S between main casing 2 and procapsid 3, this internal space S passes through wire The wire (not shown) arranged in portion 7 is connected with outside electronic equipment.Between procapsid 3 and meatus tube 31, it is provided with Noise filtering core 33.Noise filtering core 33 is that the polymeric material with micro-hole is made, and typical material is that supra polymer gathers Ethylene (ultra high molecular weight Polyethylene, UHMW-PE), or high density polyethylene (HDPE) (high DensityPolyethylene, HDPE), or politef (Polytetrafluoroethylene, PTFE), or polypropylene (Polypropylene, PP) etc..

Wherein in this internal space S, definition has interior divider wall 11, and this internal space S is divided into by this interior divider wall 11 Independent two parts space S 1 and S2.

In the present embodiment, second space S2 is positioned at the top of the first space S 1.In the first space S 1, it is provided with electricity The audio signal of subset is converted into the converting unit 5 of acoustic signals, and this converting unit typically can include, loudspeaker, speaker.

In the first space S 1, on the wall of main casing 2, offer multiple and external communication regulator hole 21, single in conversion During unit's 5 work, due to the effect of regulator hole 21 so that the back pressure produced in converting unit 5 can discharge rapidly, thus alleviates The impact of back pressure, and enhance the earphone result of broadcast to low-frequency sound.

Further, in second space S2, it is provided with mike 6.Preferably, the radio reception central shaft of this mike 6 with turn The playback central shaft changing unit 5 is mutually perpendicular state, simultaneously because interior divider wall 11 is by mike 6 and converting unit 5 Separate completely so that mike 6 is not affected by converting unit 5, thus the sound that mike will not be exported by converting unit The impact of signal.

On the wall of main casing 2 corresponding for second space S2, being further opened with adjustment hole 9, this adjustment hole 9 allows external noise to pass It is directed at mike 6, but non-conducting is to the auditory meatus of user so that mike 6 can effectively receive external noise, and carries out anti- Feedback, to realize the effect of high-precision elimination environmental noise.This is because the sky that interior divider wall 11 is combined into procapsid 3 Between relative with meatus tube 31 be isolation.

Particularly, adjustment hole 9 is adapted for variable noise regulation.Optional a kind of implementation is to use sliding gate 91, this sliding gate 91 can keep each position in sliding process, controls mike 6 according to environmental noise and receives Noise.The most also adjustment hole 9 can be completely closed.

Embodiment 2

As in figure 2 it is shown, different from embodiment 1, the first space S 1 is arranged parallel with second space S2.

Interchangeable, the door of adjustment hole 9 is used as the mode of automatic door and realizes.This motor switch can be by miniature pressure Electric original copy drives.Specifically, it is a fixed dam outside adjustment hole 9, this fixed dam has many micropores；Adjusting Near being provided with a sideboard 96 at fixed dam inside knothole, sideboard 96 is correspondingly arranged on many micropores, lives Dynamic baffle plate can make two along a certain direction initialization in fixed dam surface (as to the left or clockwise) straight line or in rotary moving The micropore of individual baffle plate produces dislocation, is blocked by the micropore of fixed dam with the non-celled portion of sideboard.Piezoelectricity original paper 95 is with alive Dynamic baffle plate 96 is connected, and can directly drive the movement of sideboard 96.Faint DC source needed for piezoelectric element 95 is by music Player power supply provides.Power line one end is connected with piezoelectricity original paper, and the other end is connected with headset plug.

Present invention is simply schematically illustrated by above-mentioned specific embodiment, does not represent the restriction to present invention.This area Technical staff it is envisioned that in the present invention concrete structure can have a lot of versions, but the master of the used technical solution Want technical characteristic same or similar with the present invention, all should be covered by scope.

Claims

1. a noise cancelling headphone, including being formed as the main casing of headset main body part, procapsid, the auditory meatus that is attached on described procapsid Manage and be attached at the earplug on described meatus tube；Formed between described main casing and described procapsid and there is internal space S Hollow bowl structure, definition has interior divider wall in described internal space S, and described interior divider wall is by described internal empty Between S be divided into independent first space S 1 and second space S2；It is characterized in that:

In described first space S 1, it is provided with the converting unit that audio input signal is converted into acoustic signals；

In described second space S2, it is provided with the mike receiving ambient external noise；

On the wall of described main casing corresponding for described second space S2, being provided with adjustment hole, described adjustment hole allows external rings Border noise transmission is to mike, but non-conducting is to the auditory meatus of user；

Described adjustment hole is provided with and can regulate the door closed, and makes an uproar regulating the external environment condition in incoming described second space S2 The size of sound.

2. noise cancelling headphone as claimed in claim 1, it is characterised in that: in described first space S 1, at the wall of described main casing On, offer multiple and external communication regulator hole, so that the back pressure that described converting unit produces can discharge rapidly.

3. noise cancelling headphone as claimed in claim 1, it is characterised in that: the peripheral part of described meatus tube has annular relief, in institute State earplug when coordinating with described meatus tube, prevent the described earplug being nested on described meatus tube from skidding off.

4. noise cancelling headphone as claimed in claim 1, it is characterised in that: the radio reception central shaft of described mike and described converting unit Playback central shaft is mutually perpendicular state.