CN108933974A - Eliminate the device and mobile device of microphone interference - Google Patents
Eliminate the device and mobile device of microphone interference Download PDFInfo
- Publication number
- CN108933974A CN108933974A CN201710378060.0A CN201710378060A CN108933974A CN 108933974 A CN108933974 A CN 108933974A CN 201710378060 A CN201710378060 A CN 201710378060A CN 108933974 A CN108933974 A CN 108933974A
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- Prior art keywords
- microphone
- signal wire
- interference
- signal
- screening arrangement
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Classifications
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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
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Abstract
The disclosure is directed to the devices and mobile device of a kind of elimination microphone interference.Described device includes：Eliminate the device of microphone interference, which is characterized in that described device includes：Microphone, microphone shielding case, microphone route screening arrangement, audio processing modules；Wherein, the microphone shielding case setting is in the microphone periphery, and is grounded；The microphone route screening arrangement is arranged on the signal wire between the microphone and audio processing modules, and the microphone interference shielding device includes magnetic bead element or inductance element.Disclosed technique scheme can effectively filter out the line-hit on the signal wire of microphone, prevent interference signal to be passed to microphone and demodulated.
Description
Technical field
This disclosure relates to which technical field of electronic equipment more particularly to a kind of device for eliminating microphone interference and movement are set
It is standby.
Background technique
The microphone of mobile device and the distance of radio-frequency antenna are closer, and radio-frequency antenna is bright to the electromagnetic interference of microphone
It is aobvious, very big influence is caused to the speech quality of user.In the related technology, some filters can be added on the peripheral circuit of microphone
Wave capacitor, so that the noise of microphone is filtered and is eliminated, but since capacity earth position is by radio-frequency antenna
Radiofrequency signal pollution, therefore the relevant technologies are very preferential to the improvement of microphone noise, it could even be possible to leading to microphone noise
It becomes apparent from.
Summary of the invention
To overcome the problems in correlation technique, the embodiment of the present disclosure provide it is a kind of elimination microphone interference device and
Mobile device, the interference of the radiofrequency signal or other signals of radio-frequency antenna to microphone is effectively reduced.
According to the first aspect of the embodiments of the present disclosure, a kind of device of elimination microphone interference is provided, described device includes：
Microphone, microphone shielding case, microphone route screening arrangement, audio processing modules；Wherein,
The microphone shielding case setting is grounded in the microphone periphery；
The microphone route screening arrangement is arranged on the signal wire between the microphone and audio processing modules, institute
Stating microphone interference shielding device includes magnetic bead element or inductance element.
In one embodiment, the earthing position of microphone is arranged in the first predeterminated position, and first predeterminated position is remote
The first earthing position from the microphone.
In one embodiment, the second predeterminated position is preferentially arranged in the earthing position of microphone shielding case, and described second is pre-
If position is the second earthing position far from the microphone.
In one embodiment, microphone shielding case is a metal shell.
In one embodiment, signal wire includes transmitting between microphone power line, microphone and the audio processing modules
The ground line of the signal wire of signal and the microphone.
In one embodiment, device further includes：Signal wire screening arrangement；
The signal wire screening arrangement setting is in the signal wire periphery, for carrying out earth signal shielding to the signal wire
Protection.
In one embodiment, signal wire screening arrangement is the screening arrangement of the metal material of ground connection.
In one embodiment, the inductance of inductance element is 150nH.
According to the second aspect of an embodiment of the present disclosure, a kind of mobile device of elimination microphone interference is provided, including above-mentioned
Eliminate the device of microphone interference.
The technical scheme provided by this disclosed embodiment can include the following benefits：By in Mike in mobile device
Wind periphery setting microphone shielding case can effectively shield interference of the outer signals to microphone body, and by microphone
Magnetic bead element or inductance element are set on the signal wire between audio processing modules, the signal of microphone can be effectively filtered out
Line-hit on line prevents interference signal to be passed to microphone and is demodulated, efficiently solves radio-frequency antenna pair in the related technology
The signal interference problem of microphone improves the experience that user uses mobile device.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Figure 1A is the structure chart of the device of elimination microphone interference shown according to an exemplary embodiment.
Figure 1B is the line schematic diagram of the device of elimination microphone interference shown according to an exemplary embodiment.
Fig. 2 is the structure chart for showing the device for eliminating microphone interference shown in one according to an exemplary embodiment.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Figure 1A is the structure chart of the device of elimination microphone interference shown according to an exemplary embodiment, and Figure 1B is basis
The line schematic diagram of the device for eliminating microphone interference shown in one exemplary embodiment；The device for eliminating microphone interference can be with
For having the mobile device of microphone and radio-frequency antenna, for example, smart phone, tablet computer etc. simultaneously, as shown in Figure 1A,
The elimination microphone interference device include：Microphone 11, microphone shielding case 12, microphone route screening arrangement 13, audio
Processing module 14.
In one embodiment, as shown in Figure 1B, the setting of microphone shielding case 12 is peripheral in the microphone 11, and
Ground connection, microphone shielding case can be a metal shell, for example, copper shell.
In one embodiment, microphone shielding case 12 may be coupled on the ground level near microphone 11, but due to
Ground level near microphone 11 is interfered by radiofrequency signal, therefore microphone shielding case 12 is connected to far from microphone 11
The anti-tampering effect of second predeterminated position is more preferable.
In one embodiment, the microphone route screening arrangement 13 is arranged in the microphone 11 and audio processing modules
On signal wire between 14, the microphone interference shielding device 13 includes magnetic bead element 131 (being not shown in Figure 1B) or electricity
Sensing unit 132 (is not shown) in Figure 1B.
In one embodiment, signal wire includes between microphone power line, microphone 11 and the audio processing modules 14
Transmit the signal wire of signal and the ground line of the microphone 11.
In one embodiment, the signal wire that signal is transmitted between microphone 11 and audio processing modules 14 can be believed for difference
Number line, or single-ended signal line.
In one embodiment, corresponding magnetic bead can be arranged on signal wire according to the frequency of the interference signal on signal wire
Element or inductance element, for example, the frequency of the interference signal on signal wire is generally 800-2000MHz, then settable inductance
Amount is the inductance of 150nH, and inductance is 2*3.14*20kHz*150nH=to the impedance of the signal of normal 20kHz as a result,
0.018ohm, and be 2*3.14*850MHz*150nH=800ohm to the impedance of the noise signal of 850MHz, to noise signal
Filtration result clearly, and does not influence the transmission of the corresponding electric signal of normal sound.
In one embodiment, the specific setting of magnetic bead element and inductance element might also depend on empirical value, for example, if
The filtration result having had when determining that magnetic bead is 100 ohm by the measurement result of magnanimity to noise signal, then settable 100 ohm
Magnetic bead.
It is outer by can effectively be shielded in microphone periphery setting microphone shielding case in mobile device in the present embodiment
Interference of the sector signal to microphone body, and by the way that magnetic bead member is arranged on the signal wire between microphone and audio processing modules
Part or inductance element can effectively filter out the line-hit on the signal wire of microphone, and interference signal is prevented to be passed to microphone
It is demodulated, efficiently solves radio-frequency antenna in the related technology and is improved by user and uses shifting for the signal interference problem of microphone
The experience of dynamic equipment.
Fig. 2 is the structure chart of the device for the elimination microphone interference shown according to an exemplary embodiment；The present embodiment
Using the device for the above-mentioned elimination microphone interference that the embodiment of the present disclosure provides, it is to eliminate the structure of the device of microphone interference
Example illustrates, as shown in Fig. 2, device may also include on the basis of above-mentioned Figure 1A and Figure 1B illustrated embodiment：Letter
Number line screening arrangement 21, the setting of signal wire screening arrangement 21 is in the signal wire periphery, and setting signal line shielding dress
21 earthing position is set in third predeterminated position, the third predeterminated position is the earthing position far from microphone position,
For carrying out earth signal shielding protection to the signal wire.
In one embodiment, microphone signal line can be pulled to the position far from radio-frequency antenna, especially by microphone
Earthing position be arranged far from the first earthing position of microphone, thus can avoid the ground connection position in the related technology by microphone
Interference signal caused by installing near microphone is transmitted to microphone noise caused by microphone from earthing position.
In one embodiment, signal wire screening arrangement 21 is the screening arrangement of the metal material of ground connection, for example, on signal wire
Lower left and right settings has copper sheet perhaps copper wire and copper sheet or copper wire are connected to ground, then can be achieved to the earth signal of signal wire into
Row shielding protection avoids interference signal from accessing microphone from ground level, and then interferes microphone 11.
The signal wire of microphone, which is pulled to distal end, in the present embodiment, in mobile device may be located remotely from Radio Frequency Interfere, and lead to
Comprehensive earth signal shielding protection can be carried out to signal wire by crossing setting signal line screening arrangement, avoid interference signal to signal
The interference of signal on line, further decrease in the related technology radio-frequency antenna to the signal interference of microphone.
The present embodiment also provides a kind of mobile device, and mobile device may include that the elimination Mike of above-described embodiment description air-dries
Thus the device disturbed can solve the nearly caused radio frequency day of distance of the radio-frequency antenna and microphone of mobile device in the related technology
The line problem serious to the signal interference of microphone.
Those skilled in the art will readily occur to its of the disclosure after considering specification and practicing disclosure disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by following
Claim is pointed out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by the accompanying claims.
Claims (9)
1. a kind of device for eliminating microphone interference, which is characterized in that described device includes：Microphone, microphone shielding case, wheat
Gram wind route screening arrangement, audio processing modules；Wherein,
The microphone shielding case setting is grounded in the microphone periphery；
The microphone route screening arrangement is arranged on the signal wire between the microphone and audio processing modules, the wheat
Gram air-dry that disturb screening arrangement include magnetic bead element or inductance element.
2. the apparatus according to claim 1, which is characterized in that the earthing position of the microphone is arranged in the first default position
It sets, first predeterminated position is the first earthing position far from the microphone.
3. the apparatus according to claim 1, which is characterized in that the earthing position of the microphone shielding case is preferentially arranged in
Second predeterminated position, second predeterminated position are the second earthing position far from the microphone.
4. the apparatus according to claim 1, which is characterized in that the microphone shielding case is a metal shell.
5. the apparatus according to claim 1, which is characterized in that the signal wire include microphone power line, microphone with
The signal wire of signal and the ground line of the microphone are transmitted between the audio processing modules.
6. the apparatus according to claim 1, which is characterized in that described device further includes：Signal wire screening arrangement；
The signal wire screening arrangement setting is in the signal wire periphery, and the earthing position of setting signal line screening arrangement exists
Third predeterminated position, the third predeterminated position is the earthing position far from microphone position, for the signal wire
Carry out earth signal shielding protection.
7. device according to claim 6, which is characterized in that the signal wire screening arrangement is the metal material of ground connection
Screening arrangement.
8. the apparatus according to claim 1, which is characterized in that the inductance of the inductance element is 150nH.
9. a kind of mobile device for eliminating microphone interference, which is characterized in that the mobile device includes claim 1-8 any
The device for eliminating microphone interference described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710378060.0A CN108933974A (en) | 2017-05-24 | 2017-05-24 | Eliminate the device and mobile device of microphone interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710378060.0A CN108933974A (en) | 2017-05-24 | 2017-05-24 | Eliminate the device and mobile device of microphone interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108933974A true CN108933974A (en) | 2018-12-04 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710378060.0A Pending CN108933974A (en) | 2017-05-24 | 2017-05-24 | Eliminate the device and mobile device of microphone interference |
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Citations (15)
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Application publication date: 20181204 |