CN107155150A - A kind of means of communication of noise-proof earphone, apparatus and system - Google Patents
A kind of means of communication of noise-proof earphone, apparatus and system Download PDFInfo
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- CN107155150A CN107155150A CN201710575856.5A CN201710575856A CN107155150A CN 107155150 A CN107155150 A CN 107155150A CN 201710575856 A CN201710575856 A CN 201710575856A CN 107155150 A CN107155150 A CN 107155150A
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- earphone
- voice signal
- intensity
- caller
- called
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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
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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
- 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)
- Telephone Set Structure (AREA)
Abstract
The invention discloses a kind of means of communication of noise-proof earphone, including receive the voice signal that caller earphone is sent；Obtain the current distance between caller earphone and called earphone；The intensity of voice signal is determined with sending to the default corresponding relation of the intensity of the voice signal of called earphone and current distance according to distance；Voice signal is adjusted to the intensity of voice signal and sends the voice signal after adjustment to the called earphone.The present invention sends the voice signal after adjustment to the process of called earphone, realizes the communication between caller earphone and called earphone.Therefore, noise-proof earphone of the invention can not only insulating noise, and normal voice can be transmitted, enter without influenceing the normal voice between colleague to link up, improve operating efficiency.Present invention also offers a kind of communication device of noise-proof earphone and system, there is identical beneficial effect with the above-mentioned means of communication.
Description
Technical field
The present invention relates to Intelligent worn device technical field, the means of communication and dress of more particularly to a kind of noise-proof earphone
Put.The invention further relates to a kind of system of the communication device including above-mentioned noise-proof earphone.
Background technology
With the development of cloud computing era, mass data turns into one of essential key element of support cloud computing, nowadays,
The storage of mass data is fixed against distributed memory system.In distributed memory system R＆D process, hardware experiments room and soft
Part computer room generally requires to dispose many memory nodes, and memory node is provided with mechanical disk, in memory node running, machine
The read-write of tool disk and the operation of radiator fan can produce some noises.When memory node is excessive, the noise of generation is quite big,
It is unfavorable for research staff to organize work.
At present, when the noise of working environment is larger, research staff usually requires to dress noise-proof earphone.Noise-proof earphone
For isolating most of sound for entering ear, still, noise-proof earphone has isolated normal sound while insulating noise, also
Sound, brings obstruction to the proper communication between colleague, have impact on operating efficiency.
Therefore, how to provide a kind of scheme for solving above-mentioned technical problem is that those skilled in the art needs solution at present
The problem of.
The content of the invention
It is an object of the invention to provide a kind of means of communication of noise-proof earphone and device, the normal language between colleague is not influenceed
Sound is linked up, and improves operating efficiency；Include the communication device of above-mentioned noise-proof earphone it is a further object of the present invention to provide a kind of
System.
In order to solve the above technical problems, the invention provides a kind of means of communication of noise-proof earphone, including：
Receive the voice signal that caller earphone is sent；
Obtain the current distance between the caller earphone and called earphone；
According to the default corresponding relation and the current distance of distance and the intensity of the voice signal of transmission to called earphone
Determine the intensity of the voice signal；
The voice signal is adjusted to the intensity of the voice signal and sends the voice signal after adjustment to described
Called earphone.
Preferably, the default corresponding relation and institute according to distance with the intensity of the voice signal of transmission to called earphone
State current distance and determine that the process of the intensity of the voice signal is specially：
The intensity of the corresponding voice signal of the current distance, described are determined from the first pre-determined distance strength relationship table
One pre-determined distance strength relationship table is to be more than the intensity apart from remote voice signal based on the intensity apart near voice signal
The table of rule setting.
Preferably, the voice signal that the caller earphone is sent includes current keyword and voice main body.
Preferably, after the voice signal that caller earphone is sent is received, the caller earphone and called earphone are being obtained
Between current distance before, this method also includes：
The current keyword in the voice signal is recognized, according to the default corresponding relation of keyword and condition code and described
Current keyword determines the condition code of called earphone；
Then it is described according to distance with send to called earphone voice signal intensity default corresponding relation and it is described work as
Front distance determines that the process of the intensity of the voice signal is specially：
The intensity of the corresponding voice signal of the current distance, described are determined from the second pre-determined distance strength relationship table
Two pre-determined distance strength relationship tables are to be more than the intensity apart near voice signal based on the intensity apart from remote voice signal
The table of rule setting.
Preferably, the process of the voice signal for receiving the transmission of caller earphone is specially：
After the current keyword that caller earphone is sent is received, send voice main body to the caller earphone and wait instruction,
The voice main body is sent so that the caller earphone is received after the voice main body waits instruction；
Receive the voice main body that the caller earphone is sent.
Preferably, the process of the current distance between the acquisition caller earphone and called earphone is specially：
The current location information of the caller earphone and called earphone is obtained according to WiFi indoor orientation methods；
Current distance between the caller earphone and called earphone is obtained according to the current location information.
In order to solve the above technical problems, present invention also offers a kind of communication device of noise-proof earphone, including：
Receiving unit, the voice signal for receiving the transmission of caller earphone；
Acquiring unit, for obtaining the current distance between the caller earphone and called earphone；
Determining unit, for according to distance with send to called earphone voice signal intensity default corresponding relation and
The current distance determines the intensity of the voice signal；
Transmitting element, for adjusting the voice signal to the intensity of the voice signal and believing the voice after adjustment
Number send to the called earphone.
Preferably, the determining unit from the first pre-determined distance strength relationship table specifically for determining the current distance
The intensity of corresponding voice signal, the first pre-determined distance strength relationship table is big based on the intensity apart near voice signal
In the table of the rule setting of the intensity apart from remote voice signal.
In order to solve the above technical problems, present invention also offers a kind of communication system of noise-proof earphone, including it is above-mentioned
The communication device of noise-proof earphone, the system also includes：
Caller earphone, for sending voice signal；
Called earphone, for receiving the voice signal after adjustment；
The caller earphone and called earphone include loudspeaker and microphone.
Preferably, the loudspeaker is bone-conduction speaker, and the microphone is bone-conduction microphone.
The present invention provides a kind of means of communication of noise-proof earphone, including receives the voice signal that caller earphone is sent；Obtain
Take the current distance between caller earphone and called earphone；According to distance with sending to the intensity of the voice signal of called earphone
Default corresponding relation and current distance determine the intensity of voice signal；Voice signal is adjusted to the intensity of voice signal and will adjusted
Voice signal after whole is sent to the called earphone.
Voice signal of the invention by receiving the transmission of caller earphone, and to the adjustment of voice signal progress respective strengths,
Then the voice signal after adjustment is sent to the process of called earphone, realized logical between caller earphone and called earphone
News.Therefore, noise-proof earphone of the invention can not only insulating noise, and normal voice can be transmitted, entered without influenceing
Normal voice between colleague is linked up, and improves operating efficiency.
Present invention also offers a kind of communication device of noise-proof earphone and system, there is identical with the above-mentioned means of communication
Beneficial effect.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to institute in prior art and embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
A kind of process flow diagram flow chart of the means of communication for noise-proof earphone that Fig. 1 provides for the present invention；
A kind of structural representation of the communication device for noise-proof earphone that Fig. 2 provides for the present invention.
Embodiment
The core of the present invention is to provide the means of communication and device of a kind of noise-proof earphone, does not influence the normal language between colleague
Sound is linked up, and improves operating efficiency；Another core of the present invention, which is to provide, a kind of includes the communication device of above-mentioned noise-proof earphone
System.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
It refer to Fig. 1, a kind of process flow diagram flow chart of the means of communication for noise-proof earphone that Fig. 1 provides for the present invention, the party
Method includes：
Step S1：Receive the voice signal that caller earphone is sent；
In order to realize the communication between earphone, server is regard as an intermediate treatment device.First, server receives master
The voice signal for making earphone send, wherein, each earphone can be used as caller earphone when serving as the role of spokesman.
Step S2：Obtain the current distance between caller earphone and called earphone；
In view of the distance between caller earphone and called earphone difference, the language that earphone is heard is called under different scenes
The intensity of message number is also different, and in order to better adapt to different scene demands, the application is sending voice signal to called ear
, can be according to making the distance between earphone and called earphone make corresponding adjustment to voice signal, also accordingly, it would be desirable to first obtain before machine
Take current distance between the two.
In addition, as long as called earphone and server are in one network, server just would know that the condition code of called earphone,
So as to subsequently when sending voice signal, according to condition code targetedly according to current between called earphone and caller earphone
Distance sends corresponding voice signal to called earphone.
Step S3：According to distance with send to the default corresponding relation of the intensity of the voice signal of called earphone and it is current away from
From the intensity for determining voice signal；
Specifically, here distance and the corresponding relation of the intensity of voice signal is to set in advance, subsequently to obtain
Current distance after, the intensity of the corresponding voice signal of current distance can be determined from corresponding relation, is follow-up adjustment voice
Signal lays the first stone.
Step S4：Voice signal is adjusted to the intensity of voice signal and sends the voice signal after adjustment to called ear
Machine.
Specifically, voice signal is adjusted to the intensity of the step S3 voice signals determined, then by the voice after adjustment
Signal is sent to called earphone, realizes the communication between caller earphone and called earphone, even if wearing noise control so as to reach
The purpose of proper communication exchange is remained able between sound earphone, colleague.
The present invention provides a kind of means of communication of noise-proof earphone, including receives the voice signal that caller earphone is sent；Obtain
Take the current distance between caller earphone and called earphone；According to distance with sending to the intensity of the voice signal of called earphone
Default corresponding relation and current distance determine the intensity of voice signal；Voice signal is adjusted to the intensity of voice signal and will adjusted
Voice signal after whole is sent to the called earphone.
Voice signal of the invention by receiving the transmission of caller earphone, and to the adjustment of voice signal progress respective strengths,
Then the voice signal after adjustment is sent to the process of called earphone, realized logical between caller earphone and called earphone
News.Therefore, noise-proof earphone of the invention can not only insulating noise, and normal voice can be transmitted, entered without influenceing
Normal voice between colleague is linked up, and improves operating efficiency.
On the basis of above-described embodiment：
As a kind of preferred embodiment, according to distance with sending to default pair of the intensity of the voice signal of called earphone
It should be related to and current distance determines that the process of the intensity of voice signal is specially：
Determine the intensity of the corresponding voice signal of current distance from the first pre-determined distance strength relationship table, first it is default away from
From the rule setting that strength relationship table is more than the intensity apart from remote voice signal for the intensity of voice signal near based on a distance from
Table.
In view of in actual applications, when the side without noise, said speaks, the side distance listened is more remote,
The sound heard is smaller.Based on this, in order to be well isolated from noise, session operational scenarios are reduced, the application is according to more remote, the voice of distance
The rule that the intensity of signal is smaller pre-sets the first pre-determined distance strength relationship table, after obtaining current distance, only to need
The intensity of the corresponding voice signal of current distance just can be determined by tabling look-up.
Specifically, it is assumed here that there are the research staff of 4 wearing noise-proof earphones, 4 noise-proofings in hardware experiments room at present
Earphone is replaced with A, B, C and D respectively.A is as caller earphone, and B, C and D are as called earphone.A and B current distance is 1
Rice, A and C current distance are 5 meters, and A and D current distance are 10 meters.If the first pre-determined distance intensity set is closed before
Be the rule of table for 1 meter of distance when, the intensity of voice signal does not adjust, namely the voice signal sent with A has identical
Intensity, since 5 meters, distance often increases by 1 meter, and the intensity of voice signal reduces 10%.The then intensity for the voice signal that B is received
For the intensity of the A voice signals sent, the intensity for the voice signal that C is received is the 60% of the intensity of the A voice signals sent,
The intensity for the voice signal that D is received is the 10% of the intensity for the voice signal that A is sent.
Certainly, the application can also utilize other rule setting the first pre-determined distance strength relationship tables, and the present invention is herein not
It is particularly limited, depending on actual conditions.
As a kind of preferred embodiment, the voice signal that caller earphone is sent includes current keyword and voice main body.
In view of there is orientation call between earphone, in order to determine destination call earphone, it can give here each
Individual earphone pre-sets a corresponding current keyword.Such as, the current keyword for setting B earphones is " B ", A earphones
Think individually to send voice signal to B earphones, it is only necessary to say " calling B " or other language for including " B ", in addition, voice
Signal also includes voice main body, for example, can be action.
As a kind of preferred embodiment, after the voice signal that caller earphone is sent is received, caller earphone is being obtained
Before current distance between called earphone, this method also includes：
Current keyword in recognition of speech signals, according to keyword and the default corresponding relation and current key of condition code
Word determines the condition code of called earphone；
It is then true to the default corresponding relation of the intensity of the voice signal of called earphone and current distance with sending according to distance
The process of the intensity of speech signal is specially：
Determine the intensity of the corresponding voice signal of current distance from the second pre-determined distance strength relationship table, second it is default away from
From the rule setting that strength relationship table is more than the intensity apart near voice signal for the intensity of voice signal remote based on a distance from
Table.
Specifically, each earphone has oneself unique condition code, and each condition code and each earphone are set
Current keyword is corresponding, therefore, is recognized by audio recognition method after current keyword, just can determine the spy of called earphone
Code is levied, so as to realize orientation call.
Distance in view of both call sides is more remote, and voice signal decay is more serious, is unfavorable for realizing orientation call, therefore,
More remote according to distance, bigger rule setting the second pre-determined distance strength relationship table of the intensity of voice signal is said with above-mentioned reduction
The regular contrast set during words scene.
As a kind of preferred embodiment, the process for receiving the voice signal that caller earphone is sent is specially：
After the current keyword that caller earphone is sent is received, send voice main body to caller earphone and wait instruction, so as to
Caller earphone receives voice main body and waits transmission voice main body after instruction；
Receive the voice main body that caller earphone is sent.
In order to more accurately distinguish between current keyword and voice main body, caller earphone is first by the voice comprising current keyword
Signal is sent to server, and server receives voice signal, and one, caller earphone can be returned to by extracting after current keyword
Voice main body waits instruction, then, and caller earphone receives voice main body and waits instruction just to send voice main body to server.
As a kind of preferred embodiment, the process of the current distance between acquisition caller earphone and called earphone is specific
For：
The current location information of caller earphone and called earphone is obtained according to WiFi indoor orientation methods；
Current distance between caller earphone and called earphone is obtained according to current location information.
Specifically, the current of caller earphone and called earphone can relatively accurately be positioned by WiFi indoor orientation methods
Positional information, then, current distance therebetween just can be obtained according to current location information.
Certainly, the application can also be obtained using other method caller earphone and called earphone current location information or
The current distance between caller earphone and called earphone is obtained using other modes, the present invention is not particularly limited herein, root
Depending on actual conditions.
It refer to Fig. 2, a kind of structural representation of the communication device for noise-proof earphone that Fig. 2 provides for the present invention, the dress
Put including：
Receiving unit 1, the voice signal for receiving the transmission of caller earphone；
Acquiring unit 2, for obtaining the current distance between caller earphone and called earphone；
Determining unit 3, for according to distance and the default corresponding relation of the intensity sent to the voice signal of called earphone
And current distance determines the intensity of voice signal；
Transmitting element 4, for adjusting voice signal to the intensity of voice signal and sending the voice signal after adjustment
To called earphone.
As a kind of preferred embodiment, determining unit from the first pre-determined distance strength relationship table specifically for determining to work as
The intensity of the corresponding voice signal of front distance, the first pre-determined distance strength relationship table is based on the intensity apart near voice signal
More than the table of the rule setting of the intensity apart from remote voice signal.
The introduction of the device provided for the present invention refer to above method embodiment, and the present invention will not be repeated here.
Present invention also offers a kind of communication system of noise-proof earphone, include the communication dress of above-mentioned noise-proof earphone
Put, the system also includes：
Caller earphone, for sending voice signal；
Called earphone, for receiving the voice signal after adjustment；
Caller earphone and called earphone include loudspeaker and microphone.
Specifically, caller earphone gathers voice signal by microphone, is called earphone and is played by loudspeaker after adjustment
Voice signal.
As a kind of preferred embodiment, loudspeaker is bone-conduction speaker, and microphone is bone-conduction microphone.
In order that the voice signal of collection and uppick becomes apparent from, sound can be realized using the method for osteoacusis
Collection and broadcasting.
The introduction of the system provided for the present invention refer to said apparatus embodiment, and the present invention no longer goes to live in the household of one's in-laws on getting married herein
State.
It should be noted that in this manual, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of means of communication of noise-proof earphone, it is characterised in that including：
Receive the voice signal that caller earphone is sent；
Obtain the current distance between the caller earphone and called earphone；
Determined according to distance with sending to the default corresponding relation of the intensity of the voice signal of called earphone and the current distance
The intensity of the voice signal；
The voice signal is adjusted to the intensity of the voice signal and sends the voice signal after adjustment to described called
Earphone.
2. the means of communication as claimed in claim 1, it is characterised in that described according to distance and the voice of transmission to called earphone
The default corresponding relation and the current distance of the intensity of signal determine that the process of the intensity of the voice signal is specially：
The intensity of the corresponding voice signal of the current distance is determined from the first pre-determined distance strength relationship table, described first is pre-
If apart from strength relationship table being the rule for being more than the intensity apart from remote voice signal based on the intensity apart near voice signal
The table of setting.
3. the means of communication as claimed in claim 1, it is characterised in that the voice signal that the caller earphone is sent includes current
Keyword and voice main body.
4. the means of communication as claimed in claim 3, it is characterised in that after the voice signal that caller earphone is sent is received,
Before the current distance between the caller earphone and called earphone is obtained, this method also includes：
The current keyword in the voice signal is recognized, according to the default corresponding relation of keyword and condition code and described current
Keyword determines the condition code of called earphone；
Then it is described according to distance with send to the default corresponding relation of the intensity of the voice signal of called earphone and it is described it is current away from
Process from the intensity for determining the voice signal is specially：
The intensity of the corresponding voice signal of the current distance is determined from the second pre-determined distance strength relationship table, described second is pre-
If apart from strength relationship table being the rule for being more than the intensity apart near voice signal based on the intensity apart from remote voice signal
The table of setting.
5. the means of communication as claimed in claim 4, it is characterised in that the mistake for the voice signal that the reception caller earphone is sent
Journey is specially：
After the current keyword that caller earphone is sent is received, send voice main body to the caller earphone and wait instruction, so as to
The caller earphone receives after the voice main body waits instruction and sends the voice main body；
Receive the voice main body that the caller earphone is sent.
6. the means of communication as described in claim any one of 1-5, it is characterised in that the acquisition caller earphone is with being called
The process of current distance between earphone is specially：
The current location information of the caller earphone and called earphone is obtained according to WiFi indoor orientation methods；
Current distance between the caller earphone and called earphone is obtained according to the current location information.
7. a kind of communication device of noise-proof earphone, it is characterised in that including：
Receiving unit, the voice signal for receiving the transmission of caller earphone；
Acquiring unit, for obtaining the current distance between the caller earphone and called earphone；
Determining unit, for according to distance with sending to the default corresponding relation of intensity of the voice signal of called earphone and described
Current distance determines the intensity of the voice signal；
Transmitting element, for adjusting the voice signal to the intensity of the voice signal and sending out the voice signal after adjustment
Deliver to the called earphone.
8. communication device as claimed in claim 7, it is characterised in that the determining unit is specifically for from the first pre-determined distance
The intensity of the corresponding voice signal of the current distance is determined in strength relationship table, the first pre-determined distance strength relationship table is
The table of rule setting based on the intensity apart near voice signal more than the intensity apart from remote voice signal.
9. a kind of communication system of noise-proof earphone, it is characterised in that including the noise-proofing as described in claim any one of 7-8
The communication device of earphone, the system also includes：
Caller earphone, for sending voice signal；
Called earphone, for receiving the voice signal after adjustment；
The caller earphone and called earphone include loudspeaker and microphone.
10. communication system as claimed in claim 9, it is characterised in that the loudspeaker is bone-conduction speaker, the Mike
Wind is bone-conduction microphone.
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| CN201710575856.5A CN107155150B (en) | 2017-07-14 | 2017-07-14 | A kind of means of communication of noise-proof earphone, apparatus and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710575856.5A CN107155150B (en) | 2017-07-14 | 2017-07-14 | A kind of means of communication of noise-proof earphone, apparatus and system |
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| US20040071294A1 (en) * | 2002-10-15 | 2004-04-15 | Halgas Joseph F. | Method and apparatus for automatically configuring surround sound speaker systems |
| JP2004348647A (en) * | 2003-05-26 | 2004-12-09 | Hitachi Ltd | Human communication system |
| CN103888274A (en) * | 2014-03-18 | 2014-06-25 | 华为技术有限公司 | Communication method and device of sub meetings in virtual meeting |
| CN104936051A (en) * | 2015-01-19 | 2015-09-23 | 天地融科技股份有限公司 | Earphone, sound box and conversation system |
| CN106656744A (en) * | 2016-10-13 | 2017-05-10 | 广州视源电子科技股份有限公司 | Method and device for adjusting volume of push notification of intelligent equipment |
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2017
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040071294A1 (en) * | 2002-10-15 | 2004-04-15 | Halgas Joseph F. | Method and apparatus for automatically configuring surround sound speaker systems |
| JP2004348647A (en) * | 2003-05-26 | 2004-12-09 | Hitachi Ltd | Human communication system |
| CN103888274A (en) * | 2014-03-18 | 2014-06-25 | 华为技术有限公司 | Communication method and device of sub meetings in virtual meeting |
| CN104936051A (en) * | 2015-01-19 | 2015-09-23 | 天地融科技股份有限公司 | Earphone, sound box and conversation system |
| CN106656744A (en) * | 2016-10-13 | 2017-05-10 | 广州视源电子科技股份有限公司 | Method and device for adjusting volume of push notification of intelligent equipment |
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| Publication number | Publication date |
|---|---|
| CN107155150B (en) | 2019-07-26 |
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