CN104994454A - Terminal for communication - Google Patents
Terminal for communication Download PDFInfo
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- CN104994454A CN104994454A CN201510364985.0A CN201510364985A CN104994454A CN 104994454 A CN104994454 A CN 104994454A CN 201510364985 A CN201510364985 A CN 201510364985A CN 104994454 A CN104994454 A CN 104994454A
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Abstract
The invention relates to a terminal for communication, and belongs to the technical field of electronics. The terminal comprises a first microphone, a second microphone, a signal processing part, an analog-digital conversion part, and a processor. The housing of the first microphone is provided with a through hole, and the housing of the second microphone is provided with a sealed structure. Two input ends of the signal processing part are respectively in electrical connection with the output end of the first microphone and the output end of the second microphone, and the output end of the signal processing part is electrically connected with the analog-digital conversion part. The analog-digital conversion part is electrically connected with the processor. The signal processing part is used for the subtraction of a first analog signal outputted by the first microphone with a second analog signal outputted by the second microphone, thereby obtaining a third analog signal, and outputting the third analog signal to the analog-digital conversion part. The terminal will not increase the thickness while reducing the interference from an electromagnetic interference signal.
Description
Technical field
The disclosure is directed to electronic technology field, especially about a kind of terminal for conversing.
Background technology
User is when using mobile phone, and call microphone is subject to the interference of TDD (Time Division Duplexing, time division duplex) noise always, the voice quality of impact call.
The reason producing TDD noise has: conducted interference and radiated interference, effectively eliminate the TDD noise because conducted interference causes at present, and the method for the TDD noise that elimination causes due to radiated interference often: increase a screening cage outside the microphone in mobile phone, microphone is enclosed in screening cage, and by screening cage ground connection.
Realizing in process of the present disclosure, inventor finds at least there is following problem:
Based on the method for the TDD noise that above-mentioned elimination causes due to radiated interference, in order to obtain good shield effectiveness, there is between screening cage and microphone certain distance, thus, cause the thickness of product to increase.
Summary of the invention
In order to overcome Problems existing in correlation technique, present disclose provides a kind of terminal for conversing.Described technical scheme is as follows:
According to the first aspect of disclosure embodiment, provide a kind of terminal for conversing, described terminal comprises: the first microphone, second microphone, Signal Processing Element, analog to digital conversion means and processor, wherein:
The shell of described first microphone is provided with through hole, and the shell of described second microphone has enclosed construction;
Two inputs of described Signal Processing Element are electrically connected with the output of described first microphone and described second microphone respectively, output and the described analog to digital conversion means of described Signal Processing Element are electrically connected, and described analog to digital conversion means and described processor are electrically connected;
Described Signal Processing Element, subtracts each other for the second analog signal the first analog signal of described first microphone output and described second microphone exported, obtains the 3rd analog signal, export to described analog to digital conversion means.
Optionally, described first microphone and described second microphone inside have identical circuit structure and identical wire laying mode.
Optionally, described first microphone, to the circuit of described Signal Processing Element and described second microphone to the circuit of described Signal Processing Element, has identical wire laying mode.
Optionally, the first sound detection of described first microphone inside is identical sound detection with the second sound detection of described second microphone inside.
Optionally, described first sound detection comprises first sound sound sensor and the first amplification filtering parts, and described second sound detection comprises rising tone sound sensor and the second amplification filtering parts.
Optionally, the distance between described first microphone and described second microphone is less than the first predeterminable range threshold value.
Optionally, described first microphone is equal to the distance of the antenna of described terminal with described second microphone.
Optionally, described first microphone to the circuit of described Signal Processing Element and described second microphone to the circuit of described Signal Processing Element between distance be less than the second predeterminable range threshold value.
Optionally, the shell of described first microphone and the shell of described second microphone have identical size and material.
Optionally, described Signal Processing Element and described analog to digital conversion means are greater than the 3rd predeterminable range threshold value to the distance of the antenna of described terminal.
Optionally, described through hole be arranged at described first microphone shell on away from the one side of the antenna of described terminal.
Optionally, described Signal Processing Element comprises subtraction circuit.
The technical scheme that embodiment of the present disclosure provides can comprise following beneficial effect:
In disclosure embodiment, terminal comprises the first microphone, second microphone, Signal Processing Element, analog to digital conversion means and processor, wherein, the shell of the first microphone is provided with through hole, the shell of second microphone has enclosed construction, two inputs of Signal Processing Element are electrically connected with the output of the first microphone and second microphone respectively, the output of Signal Processing Element and analog to digital conversion means are electrically connected, analog to digital conversion means and processor are electrically connected, Signal Processing Element, the second analog signal for the first analog signal of the first microphone output and second microphone being exported is subtracted each other, obtain the 3rd analog signal, export to analog to digital conversion means.Like this, place a shell and be provided with the microphone of through hole and the microphone of a shell seal, the output signal that shell is provided with the microphone of through hole comprises voice signal and electromagnetic interference signal, the output signal of the microphone of shell seal comprises electromagnetic interference signal, the output of two microphones and Signal Processing Element are electrically connected, by Signal Processing Element, the analog signal that two microphones obtain is subtracted each other, thus, the thickness of terminal can not be increased while the interference reducing electromagnetic interference signal.
Should be understood that, it is only exemplary and explanatory that above general description and details hereinafter describe, and can not limit the disclosure.
Accompanying drawing explanation
Accompanying drawing to be herein merged in specification and to form the part of this specification, shows and meets embodiment of the present disclosure, and is used from specification one and explains principle of the present disclosure.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of terminal according to an exemplary embodiment;
Fig. 2 a is the structural representation of a kind of terminal according to an exemplary embodiment;
Fig. 2 b is the structural representation of a kind of terminal according to an exemplary embodiment;
Fig. 3 a is the structural representation of a kind of terminal according to an exemplary embodiment;
Fig. 3 b is the structural representation of a kind of terminal according to an exemplary embodiment;
Fig. 4 is the circuit diagram of a kind of subtraction circuit according to an exemplary embodiment.
By above-mentioned accompanying drawing, illustrate the embodiment that the disclosure is clear and definite more detailed description will be had hereinafter.These accompanying drawings and text description be not in order to limited by any mode the disclosure design scope, but by reference to specific embodiment for those skilled in the art illustrate concept of the present disclosure.
Marginal data
1, the first microphone 2, second microphone
3, Signal Processing Element 4, analog to digital conversion means
5, the shell of processor 11, first microphone
21, shell 12, first sound detection of second microphone
22, the second sound detection 121, first sound sound sensor
122, the first amplification filtering parts 221, rising tone sound sensor
222, the second amplification filtering parts
Embodiment
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Execution mode described in following exemplary embodiment does not represent all execution modes consistent with the disclosure.On the contrary, they only with as in appended claims describe in detail, the example of apparatus and method that aspects more of the present disclosure are consistent.
The disclosure one exemplary embodiment provides a kind of terminal for conversing, as shown in Figure 1, terminal comprises: the first microphone 1, second microphone 2, Signal Processing Element 3, analog to digital conversion means 4 and processor 5, wherein: the shell 11 of the first microphone 1 is provided with through hole 111, the shell 21 of second microphone 2 has enclosed construction; Two inputs of Signal Processing Element 3 are electrically connected with the output of the first microphone 1 and second microphone 2 respectively, and output and the analog to digital conversion means 4 of Signal Processing Element 3 are electrically connected, and analog to digital conversion means 4 and processor 5 are electrically connected; Signal Processing Element 3, the second analog signal exported for the first analog signal of being exported by the first microphone 1 and second microphone 2 is subtracted each other, and obtains the 3rd analog signal, exports to analog to digital conversion means 4.
In disclosure embodiment, terminal comprises the first microphone, second microphone, Signal Processing Element, analog to digital conversion means and processor, wherein, the shell of the first microphone is provided with through hole, the shell of second microphone has enclosed construction, two inputs of Signal Processing Element are electrically connected with the output of the first microphone and second microphone respectively, the output of Signal Processing Element and analog to digital conversion means are electrically connected, analog to digital conversion means and processor are electrically connected, Signal Processing Element, the second analog signal for the first analog signal of the first microphone output and second microphone being exported is subtracted each other, obtain the 3rd analog signal, export to analog to digital conversion means.Like this, place a shell and be provided with the microphone of through hole and the microphone of a shell seal, the output signal that shell is provided with the microphone of through hole comprises voice signal and electromagnetic interference signal, the output signal of the microphone of shell seal comprises electromagnetic interference signal, the output of two microphones and Signal Processing Element are electrically connected, by Signal Processing Element, the analog signal that two microphones obtain is subtracted each other, thus, the thickness of terminal can not be increased while the interference reducing electromagnetic interference signal.
Another exemplary embodiment of the disclosure provides a kind of terminal for conversing, as shown in Figure 1, terminal comprises: the first microphone 1, second microphone 2, Signal Processing Element 3, analog to digital conversion means 4 and processor 5, wherein: the shell 11 of the first microphone 1 is provided with through hole 111, the shell 21 of second microphone 2 has enclosed construction; Two inputs of Signal Processing Element 3 are electrically connected with the output of the first microphone 1 and second microphone 2 respectively, and output and the analog to digital conversion means 4 of Signal Processing Element 3 are electrically connected, and analog to digital conversion means 4 and processor 5 are electrically connected; Signal Processing Element 3, the second analog signal exported for the first analog signal of being exported by the first microphone 1 and second microphone 2 is subtracted each other, and obtains the 3rd analog signal, exports to analog to digital conversion means 4.
In force, terminal can comprise: the first microphone 1, second microphone 2, Signal Processing Element 3, analog to digital conversion means 4 and processor 5.First microphone 1 and second microphone 2 all have a shell, wherein, shell bottom surface portions can be PCB (Printed Circuit Board, printed circuit board) plate, the end face of shell and side can be metal shells, also can be pcb boards.The shell of the first microphone 1 and second microphone 2 can protect inner circuit itself, and the electromagnetic interference signal that also can produce the antenna of terminal has certain shielding action, and such as, electromagnetic interference signal can be TDD noise.The shell 11 of the first microphone 1 can be provided with a through hole 111, this through hole can make the first microphone 1 obtain the voice signal of user, and then, the voice signal of user can be sent to the other side through follow-up process by this terminal, realize the normal talking of both sides, the shell 21 of second microphone 2 is closed, and with the voice signal making second microphone 2 can shield user, the first microphone 1 and second microphone 2 can receive electromagnetic interference signal.First microphone 1 can parallelly be placed in this terminal with second microphone 2, the output of the first microphone 1 and second microphone 2 and Signal Processing Element 3 can be electrically connected, the output of Signal Processing Element 3 can be electrically connected with analog to digital conversion means 4, and analog to digital conversion means 4 can be electrically connected with processor 5.
When user converses, first microphone 1 can detect the voice signal of user and the electromagnetic interference signal (mixed signal of voice signal and electromagnetic interference signal can be called the first analog signal) of antenna, second microphone 2 can obtain electromagnetic interference signal (electromagnetic interference signal can be called the second analog signal), respectively the first analog signal and the second analog signal are transported to Signal Processing Element 3 afterwards, after Signal Processing Element 3 receives the first analog signal and the second analog signal, the first analog signal is made to deduct the second analog signal, obtain the 3rd analog signal after subtracting each other, thus, 3rd analog signal comprises the voice signal of user, afterwards, 3rd analog signal can be transported to analog to digital conversion means 4, after analog to digital conversion means 4 receives the 3rd analog signal, digital signal can be converted it into, afterwards, digital signal is transported to processor 5, after processor 5 receives digital signal, can encode to it, modulator-demodulator can be transported to afterwards, modulator-demodulator can by the digital signal modulated after coding on carrier wave, obtain modulation signal, carrier frequency can be 850MHz, 900MHz, 1800MHz and 1900MHz etc., modulation signal is flowed to antenna by modulator-demodulator afterwards, antenna can send modulation signal.
Optionally, the first microphone 1 and second microphone 2 inside have identical circuit structure and identical wire laying mode.
In force, two microphones (i.e. the first microphone 1 and the second microphone 2) inside of parallel placement in this terminal comprises the parts of identical type, annexation between parts is also identical, namely above-mentioned two microphones inside has identical circuit structure, such as, if the circuit structure of the first microphone 1 inside is that resistance and electric capacity are electrically connected, electric capacity and inductance are electrically connected, then the circuit structure of second microphone 2 inside is also that resistance and electric capacity are electrically connected, and electric capacity and inductance are electrically connected.Connection line between the parts of the first microphone 1 and second microphone 2 inside can be symmetrical.Like this, the intensity that can make the first microphone 1 and the electromagnetic interference signal suffered by second microphone 2 is close.
Optionally, the first microphone 1 arrives the circuit of Signal Processing Element 3 to circuit and the second microphone 2 of Signal Processing Element 3, has identical wire laying mode.
In force, the first microphone 1 can be called circuit one to the circuit of Signal Processing Element 3, second microphone 2 is called circuit two to the circuit of Signal Processing Element 3, and circuit one and circuit two can be symmetrical.Like this, the intensity of circuit one and the electromagnetic interference signal suffered by circuit two can be made to be close.
Optionally, the first sound detection 12 of the first microphone 1 inside is identical sound detection with the second sound detection 22 of second microphone 2 inside.
In force, as shown in Figure 2 a, first microphone 1 inside can include the first sound detection 12, as shown in Figure 2 b, second microphone 2 inside can include the second sound detection 22, first sound detection 12 and the second sound detection 22 are identical sound detection, namely the first sound detection 12 and the second sound detection 22 have consistency, such as, comprise resistance R in the circuit structure of the first sound detection 12 and electric capacity C is electrically connected, electric capacity C and inductance L are electrically connected, then also comprise resistance R in the second sound detection 22, electric capacity C and inductance L, and be the resistance R corresponding with the first sound detection 12, electric capacity C and inductance L are identical.First sound detection 12 and the second sound detection 22 keep consistency, and the intensity that can make the first microphone 1 and the electromagnetic interference signal suffered by second microphone 2 is close.
Optionally, the first sound detection 12 comprises first sound sound sensor 121 and the first amplification filtering parts 122, second sound detection 22 comprises rising tone sound sensor 221 and the second amplification filtering parts 222.
Wherein, amplification filtering parts can be a global facility, the parts that also can be made up of amplifier and these two parts of filter.
In force, as shown in Figure 3 a, first sound detection 12 can comprise first sound sound sensor 121 and the first amplification filtering parts 122, the output of first sound sound sensor 121 can be electrically connected with the output of the first amplification filtering parts 122, first sound sound sensor 121 may be used for the sound of the user detected to be converted to analog signal, and the voice signal of conversion is transported to the first amplification filtering parts 121, first amplification filtering parts 121 may be used for amplifying and filtering the analog signal received, first amplification filtering parts 122 can include output, this output can be the output of the first microphone 1, or can be electrically connected with the output of the first microphone 1, the electromagnetic interference signal that the first amplification filtering parts 121 can be exported and voice signal are transported to Signal Processing Element 3.As shown in Figure 3 b, second sound detection 22 can comprise rising tone sound sensor 221 and the second amplification filtering parts 222, the output of rising tone sound sensor 221 can be electrically connected with the output of the second amplification filtering parts 222, second amplification filtering parts 222 can include output, this output can be the output of second microphone 2, or can be electrically connected with the output of second microphone 2, the electromagnetic interference signal that the second amplification filtering parts export can be transported to Signal Processing Element 3.Like this, the sound of user can be converted to voice signal, so that follow-up process.
Optionally, the distance between the first microphone 1 and second microphone 2 is less than the first predeterminable range threshold value.
In force, a distance threshold (the first predeterminable range threshold value can be called) can be pre-set, when parallel placement first microphone 1 and second microphone 2, two microphones can be made close as far as possible, thus, the intensity of its electromagnetic interference signal be subject to can be made close.
Optionally, the first microphone 1 is equal to the distance of the antenna of terminal with second microphone 2.
In force, when placement first microphone 1 and second microphone 2, can make the antenna of terminal on the perpendicular bisector of the line of two microphones, electromagnetic interference signal mainly terminal send signal time, the antenna of terminal produces, and placement can make the intensity of the first microphone 1 and the electromagnetic interference signal suffered by second microphone 2 close like this.
Optionally, the first microphone 1 to the circuit of Signal Processing Element 3 and second microphone 2 to the circuit of Signal Processing Element 3 between distance be less than the second predeterminable range threshold value.
In force, a distance threshold (the second predeterminable range threshold value can be called) can be pre-set, when layout first microphone 1 arrives the circuit of Signal Processing Element 3 and second microphone 2 arrives the circuit of Signal Processing Element 3, the distance between it can be made to be less than the second predeterminable range threshold value, namely two circuits are as far as possible close, and the intensity of the electromagnetic interference signal suffered by above-mentioned two circuits can be made close.
Optionally, the shell 11 of the first microphone 1 and the shell 21 of second microphone 2 have identical size and material.
In force, the size of the shell 11 of the first microphone 1 and the shell 21 of second microphone 2 and material can be identical, like this, they are identical to the weakening ability of electromagnetic interference signal, and the intensity that electromagnetic interference signal can be made to be radiated in the first microphone 1 and second microphone 2 is identical.
Optionally, Signal Processing Element 3 and analog to digital conversion means 4 are greater than the 3rd predeterminable range threshold value to the distance of the antenna of terminal.
In force, a distance threshold (the 3rd predeterminable range threshold value can be called) can be pre-set, when arranging Signal Processing Element 3 and analog to digital conversion means 4, them can be made away from the antenna of terminal, like this, the intensity of the electromagnetic interference signal that them can be made to be subject to is more weak, some time it even can be made from the interference of electromagnetic interference signal.
Optionally, through hole 111 be arranged at the first microphone 1 shell 11 on away from the one side of the antenna of terminal.
In force, through hole 111 on the shell 11 of the first microphone 1 can be arranged on the one side of the antenna away from terminal, such as, the antenna of terminal is positioned at the left side of the first microphone 1, through hole 111 can be arranged on the right side wall of the shell 11 of the first microphone 1, like this, the intensity entering the electromagnetic interference signal in the first microphone 1 from through hole 111 radiation can be made more weak, thus, make the intensity of the electromagnetic interference signal of the first microphone 1 and second microphone 2 inside close.
Optionally, Signal Processing Element 3 comprises subtraction circuit.
In force, as shown in Figure 4, Signal Processing Element 3 can be subtraction circuit, and this circuit can by resistance R
1, R
2, R
3and R
4with amplifier composition, R can be made
1=R
2, R
3=R
4thus can this subtraction circuit be passed through, make the first analog signal deduct the second analog signal, obtain the 3rd analog signal, if the first analog signal is identical with the intensity of the electromagnetic interference signal in the second analog signal, then the obtain the 3rd not analog signal only include the voice signal of user.
In disclosure embodiment, terminal comprises the first microphone, second microphone, Signal Processing Element, analog to digital conversion means and processor, wherein, the shell of the first microphone is provided with through hole, the shell of second microphone has enclosed construction, two inputs of Signal Processing Element are electrically connected with the output of the first microphone and second microphone respectively, the output of Signal Processing Element and analog to digital conversion means are electrically connected, analog to digital conversion means and processor are electrically connected, Signal Processing Element, the second analog signal for the first analog signal of the first microphone output and second microphone being exported is subtracted each other, obtain the 3rd analog signal, export to analog to digital conversion means.Like this, place a shell and be provided with the microphone of through hole and the microphone of a shell seal, the output signal that shell is provided with the microphone of through hole comprises voice signal and electromagnetic interference signal, the output signal of the microphone of shell seal comprises electromagnetic interference signal, the output of two microphones and Signal Processing Element are electrically connected, by Signal Processing Element, the analog signal that two microphones obtain is subtracted each other, thus, the thickness of terminal can not be increased while the interference reducing electromagnetic interference signal.
Those skilled in the art, at consideration specification and after putting into practice disclosed herein disclosing, will easily expect other embodiment of the present disclosure.The application is intended to contain any modification of the present disclosure, purposes or adaptations, and these modification, purposes or adaptations are followed general principle of the present disclosure and comprised the undocumented common practise in the art of the disclosure or conventional techniques means.Specification and embodiment are only regarded as exemplary, and true scope of the present disclosure and spirit are pointed out by claim below.
Should be understood that, the disclosure is not limited to precision architecture described above and illustrated in the accompanying drawings, and can carry out various amendment and change not departing from its scope.The scope of the present disclosure is only limited by appended claim.
Claims (12)
1. the terminal for conversing, is characterized in that, described terminal comprises the first microphone, second microphone, Signal Processing Element, analog to digital conversion means and processor, wherein:
The shell of described first microphone is provided with through hole, and the shell of described second microphone has enclosed construction;
Two inputs of described Signal Processing Element are electrically connected with the output of described first microphone and described second microphone respectively, output and the described analog to digital conversion means of described Signal Processing Element are electrically connected, and described analog to digital conversion means and described processor are electrically connected;
Described Signal Processing Element, subtracts each other for the second analog signal the first analog signal of described first microphone output and described second microphone exported, obtains the 3rd analog signal, export to described analog to digital conversion means.
2. terminal according to claim 1, is characterized in that, described first microphone and described second microphone inside have identical circuit structure and identical wire laying mode.
3. terminal according to claim 1, is characterized in that, described first microphone, to the circuit of described Signal Processing Element and described second microphone to the circuit of described Signal Processing Element, has identical wire laying mode.
4. terminal according to claim 1, is characterized in that, the first sound detection of described first microphone inside is identical sound detection with the second sound detection of described second microphone inside.
5. terminal according to claim 4, is characterized in that, described first sound detection comprises first sound sound sensor and the first amplification filtering parts, and described second sound detection comprises rising tone sound sensor and the second amplification filtering parts.
6. terminal according to claim 1, is characterized in that, the distance between described first microphone and described second microphone is less than the first predeterminable range threshold value.
7. terminal according to claim 1, is characterized in that, described first microphone is equal to the distance of the antenna of described terminal with described second microphone.
8. terminal according to claim 1, is characterized in that, described first microphone to the circuit of described Signal Processing Element and described second microphone to the circuit of described Signal Processing Element between distance be less than the second predeterminable range threshold value.
9. terminal according to claim 1, is characterized in that, the shell of described first microphone and the shell of described second microphone have identical size and material.
10. terminal according to claim 1, is characterized in that, described Signal Processing Element and described analog to digital conversion means are greater than the 3rd predeterminable range threshold value to the distance of the antenna of described terminal.
11. terminals according to claim 1, is characterized in that, away from the one side of the antenna of described terminal on the shell that described through hole is arranged at described first microphone.
12. terminals according to claim 1, is characterized in that, described Signal Processing Element comprises subtraction circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364985.0A CN104994454B (en) | 2015-06-26 | 2015-06-26 | A kind of terminal for call |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364985.0A CN104994454B (en) | 2015-06-26 | 2015-06-26 | A kind of terminal for call |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104994454A true CN104994454A (en) | 2015-10-21 |
| CN104994454B CN104994454B (en) | 2018-09-04 |
Family
ID=54306191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510364985.0A Active CN104994454B (en) | 2015-06-26 | 2015-06-26 | A kind of terminal for call |
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| Country | Link |
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| CN (1) | CN104994454B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933974A (en) * | 2017-05-24 | 2018-12-04 | 北京小米移动软件有限公司 | Eliminate the device and mobile device of microphone interference |
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| CN1172422A (en) * | 1994-11-14 | 1998-02-04 | 安德烈电子公司 | Noise cancellation apparatus |
| CN2368228Y (en) * | 1999-05-06 | 2000-03-08 | 英业达集团（南京）电子技术有限公司 | Apparatus for inhibiting back ground noise of telephone set |
| US6563925B1 (en) * | 1999-04-07 | 2003-05-13 | Ericsson Inc. | Method and apparatus for space-time echo cancellation |
| CN101268714A (en) * | 2005-08-23 | 2008-09-17 | 模拟设备公司 | Noise mitigating microphone system and method |
| US20090310798A1 (en) * | 2008-06-13 | 2009-12-17 | Sony Ericsson Mobile Communications Ab | Method for reducing a disturbance in an input signal caused by an output signal in a multi-port connector, multi-port connector, and mobile device |
| CN204206429U (en) * | 2014-08-22 | 2015-03-11 | 上海斐讯数据通信技术有限公司 | Audio signal processing |
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2015
- 2015-06-26 CN CN201510364985.0A patent/CN104994454B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172422A (en) * | 1994-11-14 | 1998-02-04 | 安德烈电子公司 | Noise cancellation apparatus |
| US6563925B1 (en) * | 1999-04-07 | 2003-05-13 | Ericsson Inc. | Method and apparatus for space-time echo cancellation |
| CN2368228Y (en) * | 1999-05-06 | 2000-03-08 | 英业达集团（南京）电子技术有限公司 | Apparatus for inhibiting back ground noise of telephone set |
| CN101268714A (en) * | 2005-08-23 | 2008-09-17 | 模拟设备公司 | Noise mitigating microphone system and method |
| US20090310798A1 (en) * | 2008-06-13 | 2009-12-17 | Sony Ericsson Mobile Communications Ab | Method for reducing a disturbance in an input signal caused by an output signal in a multi-port connector, multi-port connector, and mobile device |
| CN204206429U (en) * | 2014-08-22 | 2015-03-11 | 上海斐讯数据通信技术有限公司 | Audio signal processing |
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| CN108933974A (en) * | 2017-05-24 | 2018-12-04 | 北京小米移动软件有限公司 | Eliminate the device and mobile device of microphone interference |
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| CN104994454B (en) | 2018-09-04 |
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