CN105897725A - Method and device for synchronizing audio with PPT in online teaching and relevant equipment - Google Patents
Method and device for synchronizing audio with PPT in online teaching and relevant equipment Download PDFInfo
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- CN105897725A CN105897725A CN201610298925.8A CN201610298925A CN105897725A CN 105897725 A CN105897725 A CN 105897725A CN 201610298925 A CN201610298925 A CN 201610298925A CN 105897725 A CN105897725 A CN 105897725A
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- audio
- frequency information
- ppt
- broadcasting
- online teaching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
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- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
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- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electrically Operated Instructional Devices (AREA)
Abstract
The embodiments of the invention provide a method and a device for synchronizing audio with PPT in online teaching and relevant equipment. The method for synchronizing audio with PPT in online teaching is applied to a client, and comprises the steps of setting a key event for playing audio information at a corresponding position of online teaching PPT; and synchronizing the audio information with the PPT based on the key event. The audio information played at the client is synchronized with corresponding PPT contents by setting the key event at the corresponding position of the PPT, so that the situation that the teaching voice is not consistent with the PPT display contents in online teaching is avoided, and then the teaching effect of online teaching is improved.
Description
Technical field
The present invention relates to the communications field, particularly relate to synchronous method, device and the phase of a kind of online teaching sound intermediate frequency and PPT
Pass equipment.
Background technology
In education sector, the combination of teaching and the Internet promotes the generation of online teaching mode.At present, online teaching is adopted
Be Online Video teaching mode.In Online Video teaching process, can be by audio frequency and video in the streaming media by teacher institute
Service end be real-time transmitted to the client at student place, the PPT simultaneously imparting knowledge to students used (Microsoft Office
PowerPoint) also can change into real-time streaming media, the markup information etc. of PPT can be converted into and regard by this transmission together
Frequency stream.One in Online Video teaching simply real time education mode, in addition to Online Video is imparted knowledge to students, it is also possible to use other
Real time education mode.
In the online teaching of any of which, all there is a problem in that each at diverse geographic location of student distribution
Individual region, there is the biggest difference in the network condition (such as network speed, bandwidth etc.) of students, and these differences are to estimate
's.The difference of network condition result in the voice (namely audio-frequency information) that teacher inputs in service end and is transferred to different student side
Time is different, so that postponing occurs in the voice that the poor student place client of network condition receives teacher.
Such as, the voice that teacher inputs in service end, the time being transferred to student A place client is 1 second, and is transferred to
The time of student B place client is 10 seconds, and student B place client has occurred as soon as delay.But, student place client
Voice latency situation teacher cannot learn.So, arise that such situation: teacher has sent voice, from transmission
The current PPT place page that voice is corresponding translates into lower one page, and the PPT of the student receiving voice latency has translated into time one page, and
The voice being currently received is the most corresponding with the content of this page of PPT.Such teaching is unable to reach intended teaching mesh obviously
's.
Visible, in current online teaching, there is audio frequency and the teaching nonsynchronous problem of PPT of student place client,
Teaching efficiency is caused the biggest impact.
Summary of the invention
It is an object of the invention to provide a kind of online teaching sound intermediate frequency and the synchronous method of PPT, device and relevant device,
Promote the teaching efficiency of online teaching.
For achieving the above object, the present invention proposes the synchronous method of a kind of online teaching sound intermediate frequency and PPT, is applied to visitor
Family end, including:
The critical events playing audio-frequency information is set in the relevant position of the PPT of online teaching；
Based on described critical events, described audio-frequency information is carried out synchronize with described PPT.
Further, said method also can have the characteristics that, described based on described critical events to described audio-frequency information
Carry out synchronize with described PPT, including:
Receive the enabled instruction of described critical events；
The broadcasting of described audio-frequency information is started according to described enabled instruction.
Further, said method also can have the characteristics that, described according to described enabled instruction startup described audio frequency letter
The broadcasting of breath, including:
In the case of described audio-frequency information is locally stored audio-frequency information, start described this locality according to described enabled instruction
The broadcasting of audio information.
Further, said method also can have the characteristics that, described according to described enabled instruction startup described audio frequency letter
The broadcasting of breath, including:
In the case of described audio-frequency information is real-time Transmission audio-frequency information, described in real time according to described enabled instruction startup
The reception of transmission audio-frequency information and broadcasting.
Further, said method also can have the characteristics that, described based on described critical events to described audio-frequency information
Carry out synchronize with described PPT, including:
Receive the END instruction of described critical events；
The broadcasting of described audio-frequency information is terminated according to described END instruction.
Further, said method also can have the characteristics that, described according to described END instruction terminate described audio frequency letter
The broadcasting of breath, including:
In the case of described audio-frequency information is locally stored audio-frequency information, terminate described this locality according to described END instruction
The broadcasting of audio information.
Further, said method also can have the characteristics that, described according to described END instruction terminate described audio frequency letter
The broadcasting of breath, including:
In the case of described audio-frequency information is real-time Transmission audio-frequency information, according to described END instruction terminate described in real time
The reception of transmission audio-frequency information and broadcasting.
The online teaching sound intermediate frequency of the embodiment of the present invention and the synchronous method of PPT, arrange pass by correspondence position in PPT
The mode of key events, it is achieved that the synchronization of the audio-frequency information that client is play and corresponding PPT content, it is to avoid in online teaching
The situation appearance that voice of giving lessons is not inconsistent with PPT display content, thus improve the teaching efficiency of online teaching.
For achieving the above object, the invention allows for the synchronizer of a kind of online teaching sound intermediate frequency and PPT, be applied to
Client, including:
Module is set, for arranging the critical events playing audio-frequency information in the relevant position of the PPT of online teaching；
Synchronization module, for carrying out synchronize to described audio-frequency information with described PPT based on described critical events.
Further, said apparatus also can have the characteristics that, described synchronization module includes:
First receives unit, for receiving the enabled instruction of described critical events；
Start unit, starts described audio-frequency information for receiving the described enabled instruction of unit reception according to described first
Play.
Further, said apparatus also can have the characteristics that, described start unit includes:
Local boot subelement, in the case of described audio-frequency information is locally stored audio-frequency information, according to described
Enabled instruction starts the broadcasting of described locally stored audio-frequency information.
Further, said apparatus also can have the characteristics that, described start unit includes:
Remote activation subelement, in the case of described audio-frequency information is real-time Transmission audio-frequency information, according to described
Enabled instruction starts reception and the broadcasting of described real-time Transmission audio-frequency information.
Further, said apparatus also can have the characteristics that, described synchronization module includes:
Second receives unit, for receiving the END instruction of described critical events；
End unit, terminates described audio-frequency information for receiving the described END instruction of unit reception according to described second
Play.
Further, said apparatus also can have the characteristics that, described end unit includes:
Local end subelement, in the case of described audio-frequency information is locally stored audio-frequency information, according to described
END instruction terminates the broadcasting of described locally stored audio-frequency information.
Further, said apparatus also can have the characteristics that, described end unit includes:
Remotely terminate subelement, in the case of described audio-frequency information is real-time Transmission audio-frequency information, according to described
END instruction terminates reception and the broadcasting of described real-time Transmission audio-frequency information.
The online teaching sound intermediate frequency of the embodiment of the present invention and the synchronizer of PPT, arrange pass by correspondence position in PPT
The mode of key events, it is achieved that the synchronization of the audio-frequency information that client is play and corresponding PPT content, it is to avoid in online teaching
The situation appearance that voice of giving lessons is not inconsistent with PPT display content, thus improve the teaching efficiency of online teaching.
For achieving the above object, the invention allows for a kind of client device, online including described in aforementioned any one
Teaching sound intermediate frequency and the synchronizer of PPT.
The client device of the embodiment of the present invention, including the synchronizer of online teaching sound intermediate frequency Yu PPT, by PPT
Middle correspondence position arranges the mode of critical events, it is achieved that the synchronization of the audio-frequency information that client is play and corresponding PPT content,
Avoid the situation appearance that voice of giving lessons in online teaching is not inconsistent with PPT display content, thus improve the teaching of online teaching
Effect.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by embodiment required use attached
Figure is briefly described, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention, for this area
From the point of view of those of ordinary skill, on the premise of not paying creative work, it is also possible to obtain the attached of other according to these accompanying drawings
Figure.
Fig. 1 is the flow chart of the synchronous method of online teaching sound intermediate frequency and PPT in the embodiment of the present invention.
Fig. 2 be in the embodiment of the present invention model presentation give a lecture in real time execution process demonstration schematic diagram.
Fig. 3 is the structured flowchart of the synchronizer of online teaching sound intermediate frequency and PPT in the embodiment of the present invention.
Fig. 4 is the structured flowchart of client device in the embodiment of the present invention.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, illustrated embodiment is served only for explaining the present invention,
It is not intended to limit the scope of the present invention.For those of ordinary skill in the art, in the premise not paying creative work
Under, all embodiments obtained according to present invention spirit, broadly fall into protection scope of the present invention.
Should be appreciated that term "and/or" used herein is only a kind of incidence relation describing affiliated partner, represent
Three kinds of relations, such as, A and/or B can be there are, can represent: individualism A, there is A and B, individualism B these three simultaneously
Situation.It addition, character "/" herein, typically represent forward-backward correlation to as if the relation of a kind of "or".
Embodiment one
Fig. 1 is the flow chart of the synchronous method of online teaching sound intermediate frequency and PPT in the embodiment of the present invention.The present embodiment
Line teaching sound intermediate frequency is applied to client (i.e. student one side of online teaching) with the synchronous method of PPT.
As it is shown in figure 1, in the present embodiment, online teaching sound intermediate frequency may comprise steps of with the synchronous method of PPT:
Step S101, arranges the critical events playing audio-frequency information in the relevant position of the PPT of online teaching；
Wherein, relevant position refers to the position needing to play audio-frequency information.Such as, in certain one page of PPT, need to combine
The content of this page of PPT plays audio-frequency information, it is possible to arrange the critical events playing audio-frequency information at this page.So, show as PPT
When showing this one page, this critical events will cause the broadcasting of respective audio information.
Critical events can be regarded as the occupy-place during the display of PPT performs for audio settings.That is, PPT shows
When showing this one page being provided with critical events, critical events can cause the audio-frequency information corresponding with the present displayed content of PPT.
Visible, needing the audio-frequency information play is with corresponding PPT binding positions together, thus can realize sound
Frequently information is synchronization with PPT, thus the situation that the display content of the audio-frequency information and PPT avoiding the occurrence of broadcasting does not corresponds.
Wherein, critical events can arrange the playing duration of audio-frequency information further.
Wherein, the audio-frequency information of broadcasting can be the audio-frequency information that client is locally stored, is designated as locally stored sound here
Frequently information, it is also possible to be the audio-frequency information to client real-time Transmission of the service end by teacher place, be designated as real-time Transmission here
Audio-frequency information.
Step S102, carries out synchronize to audio-frequency information with PPT based on critical events.
In embodiments of the present invention, based on critical events, audio-frequency information is carried out synchronize with PPT, may include that reception is closed
The enabled instruction of key events；The broadcasting of audio-frequency information is started according to enabled instruction.
Wherein, enabled instruction can be that the service end by teacher place sends to client, it is also possible to is client basis
The PPT Row control on ground causes.Such as, PPT is that order performs, and when going to critical events, is considered as client's termination
Have received the enabled instruction of critical events.
After client receives the enabled instruction of critical events, the broadcasting of audio-frequency information will be started.
Wherein, start the broadcasting of audio-frequency information according to enabled instruction, may include that at audio-frequency information be locally stored audio frequency
In the case of information, start the broadcasting of locally stored audio-frequency information according to enabled instruction.Locally stored audio-frequency information can be prior
It is downloaded to locally stored by the client service end from teacher place.So, playing when, only carry out local broadcasting just may be used
With.
Wherein, start the broadcasting of audio-frequency information according to enabled instruction, may include that at audio-frequency information be real-time Transmission audio frequency
In the case of information, start reception and the broadcasting of real-time Transmission audio-frequency information according to enabled instruction.
Real-time Transmission audio-frequency information is to be received to client, client by the service end real-time Transmission at teacher place
While playing.Real-time Transmission audio-frequency information can transmit in the way of audio stream.
In embodiments of the present invention, based on critical events, audio-frequency information is carried out synchronize with PPT, may include that reception is closed
The END instruction of key events；The broadcasting of audio-frequency information is terminated according to END instruction.
Wherein, END instruction can be that the service end by teacher place sends to client, it is also possible to is critical events
Set by.Such as, the playing duration arranging audio-frequency information in critical events is 20 minutes, when the broadcasting of audio-frequency information starts
After, when reproduction time reaches 20 minutes, it is considered as client and have received the END instruction of critical events.
Wherein, terminate the broadcasting of audio-frequency information according to END instruction, may include that at audio-frequency information be locally stored audio frequency
In the case of information, terminate the broadcasting of locally stored audio-frequency information according to END instruction.
Wherein, terminate the broadcasting of audio-frequency information according to END instruction, may include that at audio-frequency information be real-time Transmission audio frequency
In the case of information, terminate reception and the broadcasting of real-time Transmission audio-frequency information according to END instruction.
Bind together with corresponding PPT content, it is ensured that teach online owing to playing the critical events of audio frequency
In, the PPT of all students and the synchronization of audio frequency are play, and do not have teacher student saying lower one page when and are also seeing page up
Situation.
Below by example, embodiment of the present invention online teaching sound intermediate frequency and a kind of tool in the synchronous method of PPT are described
Body PPT implementation, and the synchronizing process of audio frequency based on this concrete PPT implementation and PPT.The content of this example is not
For limiting the invention.
In embodiments of the present invention, text message needed for online teaching, recording audio information, recorded video information etc. can
To carry out record with a kind of proprietary PPT, this proprietary PPT is different from Microsoft's PPT form and the Keynote form of Fructus Mali pumilae of standard.
In embodiments of the present invention, the content of this proprietary PPT may include that
(1) writing on the blackboard；
(2) writing on the blackboard labelling；
(3) recording audio information (the non real-time audio-frequency information of recording)；
(4) recorded video information (the non-real-time video information of recording)；
(5) PPT Row control；
(6) interactive question and answer information.
All the elements of this proprietary PPT can use the mode of text flow to transmit.Although this proprietary PPT can include
Audio-frequency information and video information, but it is all the non-real-time information recorded due to this audio-frequency information and video information, the most equally
Can transmit in the way of using text flow.
To this proprietary PPT, the embodiment of the present invention devises proprietary interpreter and explains.This proprietary interpreter will determine specially
There are the typesetting of PPT, and the logic control of proprietary PPT.This proprietary PPT supports that predeterminable event response mechanism is (dynamic simultaneously
Mark etc.).The syntax format of this proprietary PPT is shown in the following example.
Example:
===============================
L16B: this is the first row, No. 16 fonts
L12S2D1: this two row, can click on mouse teacher and show, D represents bullets
L12S3D2EU10,2: this three row, mouse can be clicked on teacher and show, D represents bullets, and EU represents after clicking on
There will be underscore (the 10th character starts, and chooses two characters, it is simply thatMouse)。
==================================
This section of proprietary PPT can be resolved, and this proprietary PPT supports the realization in running equally simultaneously.Such as, teacher
Needing interim certain line inscribed of selection, because in teaching process, students' union puts question to, before teacher may be according to puing question to temporary changes
The teaching process preset.
To this end, the addressing system of PPT can be designed, such as L3N10,2B, such instruction transmission (in the way of text flow)
To client, will two words of overstriking " mouse ".
Simultaneously proprietary PPT designs when, it is provided that GUI (the Graphical User of What You See Is What You Get
Interface, graphic user interface) interface, interface layout is directly translated into model presentation.
Model presentation can be understood as the teaching notes of teacher.Model presentation can be performed by aforesaid proprietary interpreter.Teacher
Can shift to an earlier date layout model presentation, model presentation can simplify the work of preparing lessons of teacher.
Model presentation is linear to perform that (flesh and blood of model presentation is the content of proprietary PPT, it can be said that PPT
It is linear execution).But, teacher, when giving lessons in real time, can control execution and the stopping of each activity in model presentation, with
Just can adjust to changed conditions during giving lessons.
One typical model presentation is as follows:
==================================
[page 1 begin u12223.p]-u12223.p is unique mark of proprietary ppt
Speak time 20 [u12u32133.MP3] introduces prologue content, and this section audio the most just records
m
question
A A is big than B
B B is big than A
C C is Big than c
m
Answer time 10 is big
B Because.......
Speak time 40 [ready] real-time audio, according to the feedback of student, teacher's performance, the most live
After, this section audio will be recorded, and add in model presentation.
Student Zhang San [flower]@this script logging of Teacher student Zhang San have sent a flower to teacher
m
[page 2 introduces theme 1]
....
[page 3 terminates]
....
==================================
In above-mentioned model presentation, speak time 20 [u12u32133.MP3] and speak time 40 [ready] just may be used
To regard the critical events playing audio-frequency information as.
By above-mentioned model presentation, teacher can carry out living broadcast interactive with student.Living broadcast interactive remains at course foot
It is performed under this framework.During the execution of model presentation, change is constantly being revised at the operation interface of student.Ratio
As, teacher wishes that student, during of script, answers an on-line annealing, then, the interface of student will become one
Individual problem interface.After each student finishes, it will be seen that the result of a real-time statistics.Until teacher feels to ask this
Topic explains.Teacher can perform the next process of script, i.e. answer resolution interface.It is to say, the whole mistake of student
Journey, can be preset by teacher or temporary changes.
Living broadcast interactive between teacher and student can use existing interactive interface, it is not necessary to again develops.
The transmission means of above-mentioned proprietary PPT is described here.The transmission means of proprietary PPT is two parts: Part I
Being model presentation and the transmission of course material, Part II is the transmission of real-time command.This two parts content can be transmitted simultaneously.
Wherein, Part I can use HTTPS (Hypertext Transfer Protocol Secure, hypertext
Transmission security protocol) agreement is transmitted.The transferring content of Part I can be opened in client.The transferring content of Part I
Dividing again two kinds, the first is word and the layout section of PPT, is transmitted after the content compression of each PPT, and content is not more than 1k,
This blocks of data can directly be downloaded to the local device of client user enters course when.The second is material, such as
The audio file recorded in advance, the picture file being embedded in PPT, this block content can be downloaded in real time on backstage, plays to user
Can play this locality to during certain one page PPT.
Wherein, the real-time command of Part II transmission can be writing on the blackboard, dynamically control PPT flow process etc..This partial content can
To use HTTPS or TCP/IP, (Transmission Control Protocol/Internet Protocol, transmission controls
Agreement/Internet Protocol) mode transmits.Such as under browser environment, it is possible to use HTTPS transmits.
For the real-time audio information in the embodiment of the present invention, can transmit in the way of using audio stream.Can be by the
The audio provider of tripartite provides the mode that online audio frequency is play.
All the elements in online teaching are all controlled by unified model presentation.
Here the progress stationary problem between audio frequency and the proprietary PPT in explanation online teaching.Due to the broadcasting for PPT
Can therefore model presentation sets when, can be audio settings occupy-place, for audio frequency in the way of using model presentation
Control, can carry out with segmentation.No matter being real-time audio or non real-time audio frequency, teacher can control broadcasting of certain audio fragment
Putting, this is interspersed in one piece with model presentation.This controls realized by model presentation.Model presentation each
OK, an action is all represented.
Model presentation has online voice collaboration feature, so, PPT content is synchronization with voice can use critical events
Control.
Here, the fragment of a model presentation is quoted so that this stationary problem to be described.
==================================
[page 1 begin u12223.p]-u12223.p is unique mark of proprietary ppt
Speak time 20 [u12u32133.MP3] introduces prologue content, and this section audio the most just records
m
Speak time 40 [ready] real-time audio, according to the feedback of student, teacher's performance, the most live
After, this section will be recorded, and add in script.
a
…
===============
Fig. 2 be in the embodiment of the present invention model presentation give a lecture in real time execution process demonstration schematic diagram.In Fig. 2, real-time play
Need the broadcasting END instruction receiving teacher to terminate, this instruction contains the duration of real-time play.Student is only
Finish the duration specified and just can terminate the broadcasting of this locality.In this way it is ensured that the synchronization of all student PPT and audio frequency is broadcast
Putting, do not have a teacher saying lower one page when, student is also seeing the situation of page up.
The broadcasting of model presentation is play in a linear fashion, only after having performed an action, next dynamic
Make just can be performed.Assume that teacher, during online output voice, can carry out the underscore operation of word simultaneously.The oldest
Two sections of voices before the voice of teacher can be divided into line, after line.Voice before and after segmentation remain with in current PPT
Hold corresponding, i.e. maintain audio-frequency information synchronization with PPT content.
The online teaching sound intermediate frequency of the embodiment of the present invention and the synchronous method of PPT, arrange pass by correspondence position in PPT
The mode of key events, it is achieved that the synchronization of the audio-frequency information that client is play and corresponding PPT content, it is to avoid in online teaching
The situation appearance that voice of giving lessons is not inconsistent with PPT display content, thus improve the teaching efficiency of online teaching.
In order to realize each step and method in the above-mentioned online teaching sound intermediate frequency synchronous method embodiment with PPT, the present invention
Embodiment additionally provides the synchronizer embodiment of online teaching sound intermediate frequency and PPT.
Fig. 3 is the structured flowchart of the synchronizer of online teaching sound intermediate frequency and PPT in the embodiment of the present invention.This online teaching
Sound intermediate frequency is applied to client with the synchronizer of PPT.
As it is shown on figure 3, in the present embodiment, online teaching sound intermediate frequency can include arranging module with the synchronizer 300 of PPT
310 and synchronization module 320.Wherein, module 310 is set for arranging the key playing audio-frequency information in the PPT of online teaching
Event.Synchronization module 320 is for carrying out synchronize to audio-frequency information with PPT based on the critical events arranging module 310 setting.
In embodiments of the present invention, synchronization module 320 can include the first reception unit and start unit.Wherein, first
Receive unit for receiving the enabled instruction of critical events.Start unit is for receiving, according to first, the described startup that unit receives
Instruction starts the broadcasting of described audio-frequency information.
Wherein, start unit can include local boot subelement.It is this that local boot subelement is used at audio-frequency information
In the case of ground audio information, start the broadcasting of locally stored audio-frequency information according to enabled instruction.
Wherein, start unit can include remote activation subelement.It is real that remote activation subelement is used at audio-frequency information
Time transmission audio-frequency information in the case of, start the reception of real-time Transmission audio-frequency information and broadcasting according to enabled instruction.
In embodiments of the present invention, synchronization module 320 can include the second reception unit and end unit.Second receives list
Unit is for receiving the END instruction of critical events.End unit is for receiving, according to second, the END instruction end-sound that unit receives
Frequently the broadcasting of information.
Wherein, end unit can include local end subelement.It is this that local end subelement is used at audio-frequency information
In the case of ground audio information, terminate the broadcasting of locally stored audio-frequency information according to END instruction.
Wherein, end unit can include remotely terminating subelement.Remotely terminate subelement at audio-frequency information for real
Time transmission audio-frequency information in the case of, terminate reception and the broadcasting of real-time Transmission audio-frequency information according to END instruction.
Owing to the synchronizer of the online teaching sound intermediate frequency in the present embodiment Yu PPT is able to carry out in aforesaid online teaching
The synchronous method of audio frequency and PPT, the part that therefore the present embodiment does not describes in detail, refer to aforementioned online teaching sound intermediate frequency with
The related description of the synchronous method embodiment of PPT.
The online teaching sound intermediate frequency of the embodiment of the present invention and the synchronizer of PPT, arrange pass by correspondence position in PPT
The mode of key events, it is achieved that the synchronization of the audio-frequency information that client is play and corresponding PPT content, it is to avoid in online teaching
The situation appearance that voice of giving lessons is not inconsistent with PPT display content, thus improve the teaching efficiency of online teaching.
The embodiment of the present invention also proposed a kind of client device.Fig. 4 is the knot of client device in the embodiment of the present invention
Structure block diagram.As shown in Figure 4, in the present embodiment, client device 400 can including, online teaching sound intermediate frequency is synchronization with PPT
Device 300.Wherein, online teaching sound intermediate frequency can be any one in present invention with the synchronizer 300 of PPT
Online teaching sound intermediate frequency and the synchronizer of PPT.Explanation about online teaching sound intermediate frequency with the synchronizer 300 of PPT please be joined
Seeing the synchronizer embodiment of aforesaid online teaching sound intermediate frequency and PPT, here is omitted.
The client device of the embodiment of the present invention, including the synchronizer of online teaching sound intermediate frequency Yu PPT, by PPT
Middle correspondence position arranges the mode of critical events, it is achieved that the synchronization of the audio-frequency information that client is play and corresponding PPT content,
Avoid the situation appearance that voice of giving lessons in online teaching is not inconsistent with PPT display content, thus improve the teaching of online teaching
Effect.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (15)
1. online teaching sound intermediate frequency and a synchronous method of PPT, is applied to client, it is characterised in that including:
The critical events playing audio-frequency information is set in the relevant position of the PPT of online teaching；
Based on described critical events, described audio-frequency information is carried out synchronize with described PPT.
Online teaching sound intermediate frequency the most according to claim 1 and the synchronous method of PPT, it is characterised in that described based on institute
State critical events and described audio-frequency information is carried out synchronize with described PPT, including:
Receive the enabled instruction of described critical events；
The broadcasting of described audio-frequency information is started according to described enabled instruction.
Online teaching sound intermediate frequency the most according to claim 2 and the synchronous method of PPT, it is characterised in that described according to institute
State enabled instruction and start the broadcasting of described audio-frequency information, including:
In the case of described audio-frequency information is locally stored audio-frequency information, start described locally stored according to described enabled instruction
The broadcasting of audio-frequency information.
Online teaching sound intermediate frequency the most according to claim 2 and the synchronous method of PPT, it is characterised in that described according to institute
State enabled instruction and start the broadcasting of described audio-frequency information, including:
In the case of described audio-frequency information is real-time Transmission audio-frequency information, start described real-time Transmission according to described enabled instruction
The reception of audio-frequency information and broadcasting.
Online teaching sound intermediate frequency the most according to claim 1 and the synchronous method of PPT, it is characterised in that described based on institute
State critical events and described audio-frequency information is carried out synchronize with described PPT, including:
Receive the END instruction of described critical events；
The broadcasting of described audio-frequency information is terminated according to described END instruction.
Online teaching sound intermediate frequency the most according to claim 5 and the synchronous method of PPT, it is characterised in that described according to institute
State END instruction and terminate the broadcasting of described audio-frequency information, including:
In the case of described audio-frequency information is locally stored audio-frequency information, terminate described locally stored according to described END instruction
The broadcasting of audio-frequency information.
Online teaching sound intermediate frequency the most according to claim 5 and the synchronous method of PPT, it is characterised in that described according to institute
State END instruction and terminate the broadcasting of described audio-frequency information, including:
In the case of described audio-frequency information is real-time Transmission audio-frequency information, terminate described real-time Transmission according to described END instruction
The reception of audio-frequency information and broadcasting.
8. online teaching sound intermediate frequency and a synchronizer of PPT, is applied to client, it is characterised in that including:
Module is set, for arranging the critical events playing audio-frequency information in the relevant position of the PPT of online teaching；
Synchronization module, for carrying out synchronize to described audio-frequency information with described PPT based on described critical events.
Online teaching sound intermediate frequency the most according to claim 8 and the synchronizer of PPT, it is characterised in that described synchronization mould
Block includes:
First receives unit, for receiving the enabled instruction of described critical events；
Start unit, starts broadcasting of described audio-frequency information for receiving the described enabled instruction of unit reception according to described first
Put.
Online teaching sound intermediate frequency the most according to claim 9 and the synchronizer of PPT, it is characterised in that described startup list
Unit includes:
Local boot subelement, in the case of described audio-frequency information is locally stored audio-frequency information, according to described startup
Instruction starts the broadcasting of described locally stored audio-frequency information.
11. online teaching sound intermediate frequencies according to claim 9 and the synchronizer of PPT, it is characterised in that described startup list
Unit includes:
Remote activation subelement, in the case of described audio-frequency information is real-time Transmission audio-frequency information, according to described startup
Instruction starts reception and the broadcasting of described real-time Transmission audio-frequency information.
12. online teaching sound intermediate frequencies according to claim 8 and the synchronizer of PPT, it is characterised in that described synchronization mould
Block includes:
Second receives unit, for receiving the END instruction of described critical events；
End unit, terminates broadcasting of described audio-frequency information for receiving the described END instruction of unit reception according to described second
Put.
13. online teaching sound intermediate frequencies according to claim 12 and the synchronizer of PPT, it is characterised in that described end
Unit includes:
Local end subelement, in the case of described audio-frequency information is locally stored audio-frequency information, according to described end
The broadcasting of locally stored audio-frequency information described in order fulfillment.
14. online teaching sound intermediate frequencies according to claim 12 and the synchronizer of PPT, it is characterised in that described end
Unit includes:
Remotely terminate subelement, in the case of described audio-frequency information is real-time Transmission audio-frequency information, according to described end
The reception of real-time Transmission audio-frequency information described in order fulfillment and broadcasting.
15. 1 kinds of client devices, it is characterised in that include the online teaching sound intermediate frequency described in any one of claim 8 to 14
Synchronizer with PPT.
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