CN108810716A - Noise cancelling headphone and its control method - Google Patents
Noise cancelling headphone and its control method Download PDFInfo
- Publication number
- CN108810716A CN108810716A CN201810942991.3A CN201810942991A CN108810716A CN 108810716 A CN108810716 A CN 108810716A CN 201810942991 A CN201810942991 A CN 201810942991A CN 108810716 A CN108810716 A CN 108810716A
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- Prior art keywords
- line
- noise cancelling
- cancelling headphone
- angle
- upper cover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a kind of noise cancelling headphone and its control methods.Noise cancelling headphone according to the present invention, including：Body, the earphone upper cover being rotatably connected with body, to preset at least two microphones that spacing is arranged on body and the horn assembly being arranged inside earphone upper cover, noise cancelling headphone further includes when the angle of the first line and the second line is less than predetermined angle, triggering horn assembly sends out the control device of default prompt tone, wherein, the first line is the line of two microphones at least two microphones；Second line is the line at the midpoint and sound source of the first line.The present invention can make the direction of microphone and sound source consistent as possible, improve noise reduction, easy to use.
Description
Technical field
The present invention relates to earphone field, more particularly to a kind of noise cancelling headphone and its control method.
Background technology
Human ear internal structure has certain individual difference, although pleasant or half pleasant earphone can consider in design
Ergonomics, but still can not be compatible with proprietary wear comfort.However, existing uplink diamylose gram noise cancelling headphone one
As be all machine, different users is the optimum reelability quality for finding wearing, frequently can lead to earphone wearing mode,
The position difference of face is very big, influences whether the direction of the line of two Mikes on body.
If shown in 1, when diamylose gram noise cancelling headphone is worn, as the line L1 of two microphones and mouth face, noise reduction effect
Fruit is best.However, to ensure that reliability, prevents user from wearing partially, certain shielding angle AA (L2 and L3 angles) can be generally set,
Voice outside shielding angle can be taken as noise, be inhibited by algorithm.But if user's wearing is excessively oblique (as shown in Figure 2)
Or upwarping excessive (as shown in Figure 3), i.e. two Mike's lines excessively deviate face, the angle of two Mike's lines and face are made to be more than
Or the critical shielding angle AA in algorithm setting, cause voice to be misidentified as noise and inhibited by algorithm process, makes distal end
Caller does not hear the speech of proximal end or feels that near-end user spoken sounds are small.Moreover, earphone upwarps or oblique all can
Cause input signal-to-noise ratio to reduce, is unfavorable for the processing of algorithm.In addition, in order to ensure that the sound of near-end user is normally sent to far
It holds, just needs to take into account wearing position difference problem on algorithm, therefore the parameter of algorithm process, that is, voice shielding angle angle can be increased
Greatly, to reduce the anti-acoustic capability of earphone.
Invention content
The present invention provides a kind of easy to use, the noise cancelling headphone and its control method of anti-acoustic capability are improved.
To achieve the goals above, present invention employs following technical solutions：
One side according to the present invention provides a kind of noise cancelling headphone, including：Body is rotatably connected with body
Earphone upper cover, to preset at least two microphones that spacing is arranged on body and the loudspeaker group being arranged inside earphone upper cover
Part, noise cancelling headphone further include when the angle of the first line and the second line is less than predetermined angle, and triggering horn assembly sends out pre-
If the control device of prompt tone, wherein the first line is the line of two microphones at least two microphones；Second line
For the separate microphone of the sound source and the line of sound source on the first line.
Further, earphone upper cover is provided with circumferentially distributed multiple connecting poles；Column is correspondingly connected on body to be provided with
Perforation circumferentially；Noise cancelling headphone further includes fixing piece, and connecting pole, which passes through, to be perforated and be fixedly connected with fixing piece.
Further, connecting pole is three, is fixed at the edge of earphone upper cover, and be circumferentially uniformly distributed；Perforation is
Arc is perforated, and arc perforates corresponding central angle more than 30 degree and is less than 120 degree.
Further, damper portion is additionally provided on body, damper portion coordinates with fixing piece to keep body and earphone upper cover
Stablize.
Further, fixing piece is fixed ring, and damper portion is the cyclic annular damper portion with the fit inside of fixed ring.
Further, be arranged at intervals with multiple arc convex protruded inwardly on the inside of fixed ring, cyclic annular damper portion it is outer
It is provided with multiple arcs groove week.
Further, fixed ring has fixed part raised outward, forms fixing groove at fixed part, connecting pole is connected to
In fixing groove, or after the fixing groove with fixed ring sweat soldering.
Further, cyclic annular damper portion is fixed on the machine body by three dowels radially extended, two neighboring connection
Perforation is formed between muscle.
Further, noise cancelling headphone further includes the ear muff coordinated with human ear, and ear muff is fixed on earphone on lid.
Further, predetermined angle is less than or equal to 10 degree.
The present invention also provides a kind of noise cancelling headphone control method, noise cancelling headphone includes to preset at least the two of spacing setting
A microphone, method include：In the case of sound source sounding, the angle of the first line and the second line is detected, wherein first connects
Line is the line of two microphones at least two microphones；Second line be the first line on far from sound source microphone with
The line of sound source；When angle is less than predetermined angle, the horn assembly for triggering noise cancelling headphone sends out default prompt tone.
Further, predetermined angle is less than or equal to 10 degree.
Further, the angle of the first line and the second line is detected according to following formula：Sin θ=τ c/d, wherein θ is
The angle of first line and the second line；τ is the time difference between sound two Mikes of arrival, and c is the spread speed of sound, d
The spacing between two microphones.
In conclusion noise cancelling headphone according to the present invention and its control method, by making body can be opposite with earphone upper cover
Rotation when user wears, after the corresponding pleasant side of earphone upper cover selects suitable position, can be adjusted by rotating body
The direction of microphone on body so as to so that the direction and sound source of microphone are consistent as possible, and then can be arranged smaller
Shielding angle AA avoids shielding angle excessive and causes noise that cannot be effectively suppressed.Control device is set, when the first line and second
When the angle of line is less than predetermined angle, triggering horn assembly sends out default prompt tone, can effectively help user quickly by wheat
The direction (body) of gram wind is adjusted to suitable position.
Description of the drawings
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the correct wearing schematic diagram of noise cancelling headphone in the prior art；
Fig. 2 is that schematic diagram is worn in the error of the first kind of noise cancelling headphone in the prior art；
Fig. 3 is that second of mistake of noise cancelling headphone in the prior art wears schematic diagram；
Fig. 4 is the dimensional structure diagram of noise cancelling headphone according to the present invention；
Fig. 5 is the decomposition texture schematic diagram of noise cancelling headphone according to the present invention；
Fig. 6 is the dimensional structure diagram of the earphone upper cover of noise cancelling headphone according to the present invention；
Fig. 7 is the sectional perspective structural schematic diagram of the body of noise cancelling headphone according to the present invention；
The body and the sectional perspective structural schematic diagram after the assembly of earphone upper cover that Fig. 8 is noise cancelling headphone according to the present invention；
Fig. 9 is the wearing schematic diagram of noise cancelling headphone according to the present invention；
Figure 10 is the control flow schematic diagram of the control method of noise cancelling headphone according to the present invention；
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
As shown in Fig. 4 to 8, the present invention provides a kind of noise cancelling headphones, including：Body 10 is rotatably connected with body 10
Earphone upper cover 20, to preset at least two microphones that are arranged on body 10 of spacing and be arranged inside earphone upper cover 20
Horn assembly, noise cancelling headphone further include triggering loudspeaker when the angle of the first line L1 and the second line L4 are less than predetermined angle θ
Component sends out the control device of default prompt tone, wherein the first line L1 is two microphones at least two microphones
Line；Second line L4 is on the first line L1 far from the microphone of the sound source and the line of sound source.
By the present invention in that body 10 can relatively rotate setting with earphone upper cover 20, when user wears, when earphone upper cover 20
After corresponding pleasant side selects suitable position, i.e., behind the position of user experience the most comfortable, it can be adjusted by rotating body 10
The direction of microphone on complete machine body 10, so as to so that the direction and sound source of microphone are consistent as possible, and then can be arranged compared with
Small shielding angle AA, avoids shielding angle excessive and causes noise that cannot be effectively suppressed.Control device is set, as the first line L1
When being less than predetermined angle with the angle of the second line L4, triggering horn assembly sends out default prompt tone, can effectively help user
The direction of microphone (body 10) is quickly adjusted to suitable position.
Specifically, earphone upper cover 20 is provided with circumferentially distributed multiple connecting poles 21；Column 21 is correspondingly connected on body 10
It is provided with perforation 11 circumferentially；Noise cancelling headphone further includes fixing piece 12, and connecting pole 21 passes through perforation 11 and and fixing piece
12 are fixedly connected, to realize being rotatably connected for body 10 and earphone upper cover 20.Rotational structure passes through connecting pole 21, perforation 11
With the cooperation of fixing piece 12, the slewing area of 11 limitation connecting pole 21 of perforation, to avoid excessively adjusting.
As needed, the angle of the first line L1 and the second line L4, which are less than predetermined angle, can be less than or equal to 10 degree,
Cause noise that cannot be effectively suppressed so as to avoid shielding angle excessive, effectively improves noise reduction.
In conjunction with shown in Fig. 6 to 8, connecting pole 21 is three, is fixed at the edge of earphone upper cover 20, and circumferential uniform point
Cloth；Perforation 11 for arc perforate, after assembly, connecting pole 21 slides in can perforating along arc, to make earphone upper cover 20 with
Body 10 relatively rotates.Arc is perforated the relative angle that corresponding central angle limitation earphone upper cover 20 is rotated with body 10, generally
In order to ensure reliability, prevent inordinate rotation, arc from perforating corresponding central angle more than 30 degree and being less than 120 degree.
Preferably, be additionally provided with damper portion 14 on body 10, damper portion 14 coordinate with fixing piece 12 with keep body 10 with
Earphone upper cover 20 is stablized, and damper portion 14 is arranged, makes to keep certain resistance between body 10 and earphone upper cover 20, to prevent wearing
Body 10 is freely rotated under the action of weight during wearing, and improves stability and reliability.
Specifically, fixing piece 12 is fixed ring, and damper portion 14 is the cyclic annular damper portion with the fit inside of fixed ring, i.e., solid
Ring set is determined on the outside of cyclic annular damper portion, and the two bound fraction frictional force is bigger, or with certain clamping force, to keep
Stablize.More specifically, multiple arc convex 12a protruded inwardly are arranged at intervals on the inside of fixed ring, outside cyclic annular damper portion
It is provided with multiple arcs groove 14a, arc convex 12a week with arc groove 14a to coordinate, to form damping.
In conjunction with shown in Fig. 7 and 8, fixed ring also has fixed part 12b raised outward, and fixation is formed at fixed part 12b
Slot 12c, connecting pole 21 are connected in fixing groove 12c, to which earphone upper cover 20 to be connect with fixed ring.In addition, connecting pole 21
The reliability of connection can be kept by passing through after fixing groove 12c with fixed ring sweat soldering.
Specifically, in conjunction with shown in Fig. 6 to 8, body 10 has circular hole, the center of circular hole with the end that earphone upper cover 20 is assembled
It has been concentrically disposed with annulus, on the side wall for the circular hole that annulus is fixed on body 10 by three dowels 13, two neighboring connection
Perforation 11 is formed between muscle 13, annulus protrudes from dowel 13 in the height direction, to form cyclic annular damper portion, Fixing shrink ring
It is located in cyclic annular damper portion, fixed part 12b is corresponding with perforation 11, and the connecting pole 21 in earphone upper cover 20 passes through after perforation 11
It is connect with fixed part 12b.
In conjunction with shown in Fig. 4, noise cancelling headphone further includes the ear muff 30 coordinated with human ear, and ear muff 30 is fixed on earphone upper cover 20
On, as needed, ear muff 30 can select pleasant ear muff, can also select half pleasant ear muff.
As shown in Figures 9 and 10, the present invention also provides a kind of noise cancelling headphone control method, noise cancelling headphone includes between default
At least two microphones away from setting, this method include：In the case of sound source sounding, the first line L1 and the second line are detected
The angle of L4, wherein the first line L1 is the line of two microphones at least two microphones；Second line L4 is first
Far from the microphone of the sound source and the line of sound source on line L1；When angle is less than predetermined angle, noise cancelling headphone is triggered
Horn assembly sends out default prompt tone, to inform that the direction of microphone (body 10) is adjusted to suitable angle by user
Degree.
The noise cancelling headphone control method that the present invention is illustrated by taking the noise cancelling headphone of diamylose gram as an example, works as number of microphone
When more than two, any two of which microphone can be considered as a diamylose gram.In the prior art, the noise cancelling headphone of diamylose gram is calculated
In method design, to take into account the problem of wearing difference, the angles AA in voice shielding angle Fig. 1 can be arranged within the scope of 75 °~90 °.Drop
Performance of making an uproar is unable to reach optimization.
In the present invention, angle in the range of less than 75 ° can be arranged in algorithm process parameter-angles voice shielding angle AA first
Degree can be voluntarily arranged according to actual conditions, angle is smaller, noise attentuation it is more.And pass through earphone upper cover 20 and body 10
Rotation design, can by the deviation angle of two Mike's lines and mouth reduce to a certain extent, can be done into one in software systems
The accurate adjustment of step.
The flow for controlling rotation is as shown in Figure 10, after detecting voice by VAD (i.e. voice activity detection), carries out DOA
It calculates (i.e. the time difference by two Mikes pickup and phase information, determine the angle between two Mike's lines and mouth) and obtains figure
The number of degrees at the angles θ in 9, and the angle is exported to control device, control device is judged, if the angles θ are less than or equal to preset angle
Degree, such as 10 °, control device can drive horn assembly to send out default prompt tone, indicate that 10 position of current body is best.If
The angles θ are more than 10 °, indicate that two Mike's lines and mouth have certain deviation, loudspeaker not to send out prompt tone, can continue to adjust body
10 positions make being optimal.
Specifically, the calculating of θ angles, can be based on energy estimation, MUSIC, ESPRIT of subspace mode and time
The technologies such as difference, various technologies have different computational accuracies.Such as reaching the time difference between two Mikes according to sound
Come what is calculated, basic calculating formula is as follows：Sin θ=τ c/d, wherein τ are the time difference between sound two Mikes of arrival,
C is the spread speed of sound, and d is the spacing of two Mikes of headset designs.
The above description is merely a specific embodiment, under the above-mentioned introduction of the present invention, those skilled in the art
Other improvement or deformation can be carried out on the basis of the above embodiments.It will be understood by those skilled in the art that above-mentioned tool
Body description only preferably explains that the purpose of the present invention, protection scope of the present invention should be subject to the protection scope in claims.
Claims (13)
1. a kind of noise cancelling headphone, including：Body (10), the earphone upper cover (20) being rotatably connected with the body (10), with pre-
If at least two microphones and the horn assembly internal in earphone upper cover (20) is arranged that spacing is arranged on the body (10),
It is characterized in that,
The noise cancelling headphone further includes triggering the loudspeaker group when the angle of the first line and the second line is less than predetermined angle
Part sends out the control device of default prompt tone, wherein first line is two Mikes at least two microphone
The line of wind；Second line is on first line far from the microphone of the sound source and the line of sound source.
2. noise cancelling headphone according to claim 1, which is characterized in that
The earphone upper cover (20) is provided with circumferentially distributed multiple connecting poles (21)；The company is corresponded on the body (10)
It connects column (21) and is provided with perforation (11) circumferentially；
The noise cancelling headphone further includes fixing piece (12), the connecting pole (21) pass through the perforation (11) and with the fixing piece
(12) it is fixedly connected.
3. noise cancelling headphone according to claim 2, which is characterized in that
The connecting pole (21) is three, is fixed at the edge of the earphone upper cover (20), and be circumferentially uniformly distributed；
The perforation (11) is perforated for arc, and the arc perforates corresponding central angle more than 30 degree and is less than 120 degree.
4. noise cancelling headphone according to claim 2 or 3, which is characterized in that
Damper portion (14) is additionally provided on the body (10), the damper portion (14) coordinates with the fixing piece (12) to keep
The body (10) is stablized with the earphone upper cover (20).
5. noise cancelling headphone according to claim 4, which is characterized in that
The fixing piece (12) is fixed ring, and the damper portion (14) is to be damped with the ring-type of the fit inside of the fixed ring
Portion.
6. noise cancelling headphone according to claim 5, which is characterized in that
Be arranged at intervals with multiple arc convex (12a) protruded inwardly on the inside of the fixed ring, the ring-type damper portion it is outer
It is provided with multiple arcs groove (14a) week.
7. noise cancelling headphone according to claim 5, which is characterized in that
The fixed ring has fixed part (12b) raised outward, and fixing groove (12c), institute are formed at the fixed part (12b)
Connecting pole (21) is stated to be connected in fixing groove (12c), or across the fixing groove (12c) afterwards with the fixed ring thermofussion welding
It connects.
8. noise cancelling headphone according to claim 5, which is characterized in that
The ring-type damper portion is fixed on by three dowels (13) radially extended on the body (10), two neighboring institute
It states and forms the perforation (11) between dowel (13).
9. noise cancelling headphone according to any one of claim 1 to 3, which is characterized in that
The noise cancelling headphone further includes the ear muff (30) coordinated with human ear, and the ear muff (30) is fixed on the earphone upper cover (20)
On.
10. noise cancelling headphone according to claim 1, which is characterized in that
The predetermined angle is less than or equal to 10 degree.
11. a kind of noise cancelling headphone control method, the noise cancelling headphone includes at least two microphones being arranged with default spacing,
It is characterized in that, the method includes：
In the case of sound source sounding, the angle of first line and second line is detected, wherein first line
For the line of two microphones at least two microphone；Second line is on first line far from described
The microphone of sound source and the line of sound source；
When the angle is less than predetermined angle, the horn assembly for triggering the noise cancelling headphone sends out default prompt tone.
12. noise cancelling headphone control method according to claim 11, which is characterized in that
The predetermined angle is less than or equal to 10 degree.
13. noise cancelling headphone control method according to claim 11, which is characterized in that according to following formula detection described the
The angle of one line and second line：
Sin θ=τ c/d, wherein θ is the angle of the first line and the second line；τ is the time between sound two Mikes of arrival
Difference, c are the spread speed of sound, and d is spacing between two microphones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810942991.3A CN108810716A (en) | 2018-08-17 | 2018-08-17 | Noise cancelling headphone and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810942991.3A CN108810716A (en) | 2018-08-17 | 2018-08-17 | Noise cancelling headphone and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108810716A true CN108810716A (en) | 2018-11-13 |
Family
ID=64080397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810942991.3A Pending CN108810716A (en) | 2018-08-17 | 2018-08-17 | Noise cancelling headphone and its control method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108810716A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110049397A (en) * | 2019-05-07 | 2019-07-23 | 广州由我科技股份有限公司 | A kind of bluetooth headset and preparation method |
| CN110099330A (en) * | 2019-06-03 | 2019-08-06 | 广州由我科技股份有限公司 | A kind of earphone, earphone system and earphone charging system |
| CN110475172A (en) * | 2019-05-20 | 2019-11-19 | 美律电子(深圳)有限公司 | Wireless headset |
| CN113115179A (en) * | 2021-03-24 | 2021-07-13 | 维沃移动通信有限公司 | Working state adjusting method and device |
| CN114173252A (en) * | 2021-12-14 | 2022-03-11 | Oppo广东移动通信有限公司 | Audio acquisition direction control method and device, earphone and storage medium |
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| CN114173252A (en) * | 2021-12-14 | 2022-03-11 | Oppo广东移动通信有限公司 | Audio acquisition direction control method and device, earphone and storage medium |
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Application publication date: 20181113 |
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