CN106161814B - A kind of sound mixing method and device of Multi-Party Conference - Google Patents
A kind of sound mixing method and device of Multi-Party Conference Download PDFInfo
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Abstract
The embodiment of the invention provides a kind of sound mixing method of Multi-Party Conference and device, method therein is specifically included: receiving the packets of audio data of all sides of attending a meeting；Parsing obtains corresponding audio data from the backpack body of the packets of audio data, and parsing obtains the information volume of the audio data from the packet header of the packets of audio data；Information volume according to the audio data screens the audio data of all sides of attending a meeting；Audio mixing is carried out to audio data after screening, obtains corresponding audio mixing result.Operand and complexity when the embodiment of the present invention can greatly reduce audio mixing, so as to reduce the burden of CPU.
Description
Technical field
The present invention relates to Multi-Party Conference technical fields, more particularly to the sound mixing method and device of a kind of Multi-Party Conference.
Background technique
Multipart video-meeting is the user based on communication networks such as telecommunication network, view networkings in two or more places
Between hold a meeting, the communication mode of real-time transmission sound, image.The user for participating in video conference, can be delivered by video
Opinion, while image, movement, the expression etc. for observing other side, and can show the real scene shootings such as material object, drawing, file video image or
Person is shown in the figure of blackboard, the word and picture write on blank, makes to feel in different location people with a part in a conference as carried out with other side
The talk of " face-to-face ", the meeting that the scene of can replace in effect is held.
In multipart video-meeting, many users can make a speech, but since all users can only receive uniquely all the way
Audio data, it is therefore desirable to which multi-path audio-frequency data is gathered up and be mixed into a circuit-switched data by a kind of method, so that mixed number
According to allowing owner to hear, this method namely sound mixing method.
Existing sound mixing method is counted usually using sample rate as the standard of audio mixing, namely according to sample rate is important indicator
Calculate the audio mixing output after audio mixing；It is when the number of users for participating in multipart video-meeting is larger, the corresponding operand meeting of audio mixing
It is very big, therefore big burden is brought to CPU.
Summary of the invention
The embodiment of the present invention, can the technical problem to be solved is that the sound mixing method and device of a kind of Multi-Party Conference is provided
Operand and complexity when greatly reducing audio mixing, so as to reduce the burden of CPU.
To solve the above-mentioned problems, the invention discloses a kind of sound mixing methods of Multi-Party Conference, which comprises
Receive the packets of audio data of all sides of attending a meeting；
Parsing obtains corresponding audio data from the backpack body of the packets of audio data, from the packet header of the packets of audio data
Middle parsing obtains the information volume of the audio data；
Information volume according to the audio data screens the audio data of all sides of attending a meeting；
Audio mixing is carried out to audio data after screening, obtains corresponding audio mixing result.
Preferably, the information volume according to the audio data screens the audio data of all sides of attending a meeting
Step, comprising:
If the maximum main line audio data of information volume is chosen, as audio data after screening.
Preferably, the step of audio data carries out audio mixing, obtains corresponding audio mixing result after described pair of screening, comprising:
When the sample rate of audio data is identical after the screening, audio data after the screening is weighted and averaged,
And using obtained result of weighted average as corresponding audio mixing result；Or
After the screening when sample rate difference of audio data, to after the screening audio data carry out resampling so that
The sample rate of audio data is identical after the screening, and is weighted and averaged to audio data after the screening after resampling, and will
Obtained result of weighted average is as corresponding audio mixing result.
Preferably, after the screening number of audio data between 1 to 9.
Preferably, the step of packets of audio data for receiving all sides of attending a meeting, comprising:
It receives depending on networked server come the packets of audio data for networked terminals of considering oneself as；And/or
The packets of audio data from internet terminal is received by protocol conversion server depending on networked server.
On the other hand, the present invention also provides a kind of device sound mixing of Multi-Party Conference, described device includes:
Receiving module, for receiving the packets of audio data of all sides of attending a meeting；
Parsing module obtains corresponding audio data for parsing from the backpack body of the packets of audio data, from the sound
Parsing obtains the information volume of the audio data in the packet header of frequency data packet；
Screening module is sieved for audio data of the information volume according to the audio data to all sides of attending a meeting
Choosing；And
Mix module obtains corresponding audio mixing result for carrying out audio mixing to audio data after screening.
Preferably, the screening module, if being specifically used for choosing the maximum main line audio data of information volume, as screening
Audio data afterwards.
Preferably, the mix module, comprising:
First audio mixing submodule, when the sample rate for the audio data after the screening is identical, to sound after the screening
Frequency evidence is weighted and averaged, and using obtained result of weighted average as corresponding audio mixing result；Or
Second audio mixing submodule, for after the screening when sample rate difference of audio data, to sound after the screening
Frequency is according to carrying out resampling so that the sample rate of audio data is identical after the screening, and to audio number after the screening after resampling
According to being weighted and averaged, and using obtained result of weighted average as corresponding audio mixing result.
Preferably, after the screening number of audio data between 1 to 9.
Preferably, the receiving module, comprising:
First receiving submodule is located at view networked server side, the packets of audio data for networked terminals of considering oneself as receiving；
And/or
Second receiving submodule is located at view networked server side, for being received by protocol conversion server from interconnection
The packets of audio data of network termination.
Compared with prior art, the embodiment of the present invention includes following advantages:
The embodiment of the present invention parses from the packet header of packets of audio data and obtains the information volume of audio data, and before audio mixing
Information volume according to the audio data screens the audio data of all sides of attending a meeting, since the screening can reduce
The corresponding audio number of audio mixing, therefore operand and complexity when can greatly reduce audio mixing, so as to reduce the negative of CPU
Load.
Detailed description of the invention
Fig. 1 shows a kind of step flow chart of the sound mixing method embodiment of Multi-Party Conference of the invention；
Fig. 2 shows a kind of structural schematic diagrams of multiparty conference system based on view networking of the invention；
Fig. 3 shows a kind of structural schematic diagram of multiparty conference system based on view networking of the invention；And
Fig. 4 shows a kind of structural block diagram of the device sound mixing embodiment of Multi-Party Conference of the invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment of the method
Referring to Fig.1, a kind of step flow chart of the sound mixing method embodiment of Multi-Party Conference of the invention is shown, specifically may be used
To include:
Step 101, the packets of audio data for receiving all sides of attending a meeting；
In the embodiment of the present invention, Multi-Party Conference can be multiparty teleconferencing or multipart video-meeting；And it is possible to sharp
Above-mentioned Multi-Party Conference is realized with internet and/or depending on networking technology.Wherein, have a kind of special network characteristic depending on networking,
It is the data transmission network using double layer network protocol realization, is absolutely not IP (agreement interconnected between network, Internet
Protocol) the network of concept.It is that dependence is protocol addressed mutual to realize depending on communication interaction, the data transmission etc. between networked terminals
Join intercommunication.Such network characteristic can provide the performance indicators such as big bandwidth, high efficiency, low latency depending on networking, also, also
The business demand that video conference accesses in many ways under the various occasions such as surgical medical can be supported.
Referring to Fig. 2, a kind of structural schematic diagram of multiparty conference system based on view networking of the invention is shown, it is specific
May include: view networked server 201 and view networked terminals 202, wherein view networked server 201 and view networked terminals 202 it
Between can by regard networked server 201 interchanger and cable establish network connection.
The treatment process of multiparty conference system shown in Fig. 2 can specifically include:
Step S1, it all to network authorization, by being managed collectively depending on networked server 201, purpose depending on networked terminals 202
It is to allow depending on there is the allocation list of all view networked terminals 202 in 201 hand of networked server, has can recorde view in the allocation list
The information such as number, title, the addressable address of networked terminals 202；
Step S2, when view networked server 201 initiates primary video meeting, video conference can be requested to be sent to have selected
View networked terminals 202, depending on networked terminals 202 receive the video conference request after can be added in video conference；
Step S3, certain video data and audio data can be acquired depending on networked terminals 202, and is sent to view networking clothes
Business 201
Step S4, view networked server 202 is according to business needs, the video data and sound sent to view networked terminals 202
The video data handled and audio data are sent to the view networked terminals 202 of access according to being handled by frequency；Wherein,
The sound mixing method of the Multi-Party Conference of the embodiment of the present invention can be applied to at the audio data sent depending on networked terminals 202
The process of reason.
Referring to Fig. 3, a kind of structural schematic diagram of multiparty conference system based on view networking of the invention is shown, it is specific
It may include: view networked server 301, protocol conversion server 302 and internet terminal 303, wherein protocol conversion server
302 can support double netcard, the interchanger of one end network interface card connection view networked server 301, other end network interface card to connect internet
The interchanger of the connected internet of terminal 303, protocol conversion server 302 can play the role of protocol conversion, specifically, can be with
View is obtained by the packet header that addition on the basis of the IP data packet that sends in internet terminal 303 meets view networking protocol to network number
According to packet, and by depending on networking by it is described view networking data packet be sent to regard networked server 301, also, its can also by
The IP data for meeting Internet protocol are obtained depending on removing packet header on the basis of networking data packet depending on what networked server 301 was sent
Packet, and the IP data packet is sent to by internet terminal 303 by internet.The place of the multiparty conference system as shown in Fig. 3
Reason process is similar with the treatment process of multiparty conference system shown in Fig. 2, and and therefore not to repeat here, cross-referenced.
A kind of process of protocol conversion server 302 initialization access view networked server 301 is provided herein, it specifically can be with
Include the following steps:
Step A1, inquiry packet is issued depending on the node server in networked server 301 with centralized control functions；
Step A2, after protocol conversion server 302 is powered on and initialized, inquiry packet is received, returning includes change server sequence
The response bag of row number；
Step A3, node server searches the first/bis- protocol conversion corresponding with the sequence number in Registry
Server info, protocol conversion server information can specifically include the MAC Address and protocol conversion clothes of protocol conversion server
The MAC Address of the internet terminal of business device binding；
Step A4, node server sends the order that networks to protocol conversion server 302, includes association in the networking order
Change server is discussed in the address of view networking and the MAC Address of protocol conversion server；
Step A5, protocol conversion server returns to response, protocol conversion server access view networking after receiving networking order.
It should be noted that multiparty conference system shown in above-mentioned Fig. 2, Fig. 3 is intended only as example, those skilled in the art are also
It can according to need using one of above-mentioned multiparty conference system or both, for example, accessing Multi-Party Conference system when using the two
The terminal of system can specifically include view networked terminals 202 and internet terminal 303, and the embodiment of the present invention is to specific Multi-Party Conference
System is without restriction.
Step 102, parsing obtains corresponding audio data from the backpack body of the packets of audio data, from the audio data
Parsing obtains the information volume of the audio data in the packet header of packet；
The packets of audio data of the embodiment of the present invention can specifically include packet header and backpack body two parts, wherein can be in backpack body
Specific audio data is carried, and the information volume of current audio data can be carried in packet header.
For the multiparty conference system shown in Fig. 2, it can measure to obtain the volume of current audio data depending on networked terminals 202
Information, can also obtain the information volume of current audio data by man-machine interaction mode, and the embodiment of the present invention is current to obtaining
The concrete mode of the information volume of audio data is without restriction.
Step 103 screens the audio data of all sides of attending a meeting according to the information volume of the audio data；
In the multiparty conference system based on view networking, the quantity of the view networked terminals of accessing conference is often very huge, false
Having accessed meeting depending on networked terminals equipped with 1000, then sound mixing method needs to receive 1000 road audio datas, audio mixing is carried out to it,
And audio mixing result is sent to each view networked terminals.Since the data volume of 1000 road audio datas is very big, if to institute
Some audio datas carry out audio mixing, then the operand that device sound mixing is born is very huge, this undoubtedly increases the burden of CPU.
The embodiment of the present invention is by screening audio data, so that device sound mixing does not need the increase with number of access terminals
And increase the burden of CPU.
In an embodiment of the present invention, sound of the information volume according to the audio data to all sides of attending a meeting
The step of frequency is according to being screened can specifically include: if the maximum main line audio data of information volume is chosen, after screening
Audio data.Since audio mixing is based on the information volume maximum of audio data after screening, it can guarantee that audio mixing result can
It is heard by all users.
In an embodiment of the present invention, after the screening number of audio data between 1 to 9, it is assumed that after screening
The number of audio data is M, then 1≤M≤9.Certainly, above-mentioned 1≤M≤9 are intended only as example, and are not understood to implementation of the present invention
Limitation of the example to M, in fact, those skilled in the art can determine according to actual conditions such as the loads that device sound mixing is born
The numerical value of M.
Step 104 carries out audio mixing to audio data after screening, obtains corresponding audio mixing result.
In an embodiment of the present invention, audio data carries out audio mixing after described pair of screening, obtains corresponding audio mixing knot
The step of fruit, can specifically include:
Sub-step B1, when the sample rate of audio data is identical after the screening, audio data after the screening is carried out
Weighted average, and using obtained result of weighted average as corresponding audio mixing result；Or
Sub-step B2, when the sample rate difference of audio data, audio data after the screening is carried out after the screening
Resampling is so that the sample rate of audio data is identical after the screening, and is weighted to audio data after the screening after resampling
It is average, and using obtained result of weighted average as corresponding audio mixing result.
Weighted mean procedure of the invention is specifically as follows: by every circuit-switched data of audio data decoded output after screening and respectively
Linear superposition is carried out from after multiplied by weight；A kind of formula for being weighted and averaged audio data after the screening is provided herein to show
Example:
Wherein, ai(t) indicate moment t i-th (i=1,2 ..., M) road audio data decoded output data, wi,MTable
Show ai(t) weight, in a kind of application example of the invention, wi,MValue be 1/M.
To sum up, the embodiment of the present invention parses from the packet header of packets of audio data and obtains the information volume of audio data, and
Information volume before audio mixing according to the audio data screens the audio data of all sides of attending a meeting, due to the screening energy
Operand and complexity when enough reducing the corresponding audio number of audio mixing, therefore can greatly reduce audio mixing, so as to reduce
The burden of CPU.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method
It closes, but those skilled in the art should understand that, the embodiment of the present application is not limited by the described action sequence, because according to
According to the embodiment of the present application, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, and related movement not necessarily the application is implemented
Necessary to example.
Installation practice
Referring to Fig. 4, a kind of structural block diagram of the device sound mixing embodiment of Multi-Party Conference of the invention is shown, it specifically can be with
Include:
Receiving module 401, for receiving the packets of audio data of all sides of attending a meeting；
Parsing module 402, for from the backpack body of the packets of audio data parsing obtain corresponding audio data, from described
Parsing obtains the information volume of the audio data in the packet header of packets of audio data；
Screening module 403 is carried out for audio data of the information volume according to the audio data to all sides of attending a meeting
Screening；And
Mix module 404 obtains corresponding audio mixing result for carrying out audio mixing to audio data after screening.
In one preferred embodiment of the invention, the screening module 403 can be specifically used for choosing information volume maximum
If main line audio data, as audio data after screening.
In another preferred embodiment of the invention, the mix module 404, can specifically include:
First audio mixing submodule, when the sample rate for the audio data after the screening is identical, to sound after the screening
Frequency evidence is weighted and averaged, and using obtained result of weighted average as corresponding audio mixing result；Or
Second audio mixing submodule, for after the screening when sample rate difference of audio data, to sound after the screening
Frequency is according to carrying out resampling so that the sample rate of audio data is identical after the screening, and to audio number after the screening after resampling
According to being weighted and averaged, and using obtained result of weighted average as corresponding audio mixing result.
In still another preferable embodiment of the invention, the number of audio data is between 1 to 9 after the screening.
In another preferred embodiment of the invention, the receiving module 401 be can specifically include:
First receiving submodule is located at view networked server side, the packets of audio data for networked terminals of considering oneself as receiving；
And/or
Second receiving submodule is located at view networked server side, for being received by protocol conversion server from interconnection
The packets of audio data of network termination.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can provide as method, apparatus or calculate
Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can
With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, terminal device (system) and computer program
The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions
In each flow and/or block and flowchart and/or the block diagram in process and/or box combination.It can provide these
Computer program instructions are set to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to generate a machine, so that being held by the processor of computer or other programmable data processing terminal devices
Capable instruction generates for realizing in one or more flows of the flowchart and/or one or more blocks of the block diagram
The device of specified function.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing terminal devices
In computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates packet
The manufacture of command device is included, which realizes in one side of one or more flows of the flowchart and/or block diagram
The function of being specified in frame or multiple boxes.
These computer program instructions can also be loaded into computer or other programmable data processing terminal devices, so that
Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus
The instruction executed on computer or other programmable terminal equipments is provided for realizing in one or more flows of the flowchart
And/or in one or more blocks of the block diagram specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
Above to a kind of sound mixing method and a kind of device sound mixing of Multi-Party Conference of Multi-Party Conference provided by the present invention,
It is described in detail, used herein a specific example illustrates the principle and implementation of the invention, the above reality
The explanation for applying example is merely used to help understand method and its core concept of the invention；Meanwhile for the general technology of this field
Personnel, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this theory
Bright book content should not be construed as limiting the invention.
Claims (8)
1. a kind of sound mixing method of Multi-Party Conference, which is characterized in that the described method includes:
Receive the packets of audio data of all sides of attending a meeting；
Parsing obtains corresponding audio data from the backpack body of the packets of audio data, solves from the packet header of the packets of audio data
Analysis obtains the information volume of the audio data；
Information volume according to the audio data screens the audio data of all sides of attending a meeting；
Audio mixing is carried out to audio data after screening, obtains corresponding audio mixing result, comprising: audio data adopts after the screening
When sample rate is identical, audio data after the screening is weighted and averaged, and using obtained result of weighted average as corresponding
Audio mixing result；Or after the screening when sample rate difference of audio data, audio data after the screening is adopted again
Sample is so that the sample rate of audio data is identical after the screening, and is weighted to audio data after the screening after resampling flat
, and using obtained result of weighted average as corresponding audio mixing result.
2. the method as described in claim 1, which is characterized in that the information volume according to the audio data is to all ginsengs
The step of audio data of meeting side is screened, comprising:
If the maximum main line audio data of information volume is chosen, as audio data after screening.
3. method according to claim 1 or 2, which is characterized in that the number of audio data is between 1 to 9 after the screening.
4. the method as described in claim 1, which is characterized in that the step of the packets of audio data for receiving all sides of attending a meeting,
Include:
It receives depending on networked server come the packets of audio data for networked terminals of considering oneself as；And/or
The packets of audio data from internet terminal is received by protocol conversion server depending on networked server.
5. a kind of device sound mixing of Multi-Party Conference, which is characterized in that described device includes:
Receiving module, for receiving the packets of audio data of all sides of attending a meeting；
Parsing module obtains corresponding audio data for parsing from the backpack body of the packets of audio data, from the audio number
The information volume of the audio data is obtained according to parsing in the packet header of packet；
Screening module is screened for audio data of the information volume according to the audio data to all sides of attending a meeting；And
Mix module obtains corresponding audio mixing result for carrying out audio mixing to audio data after screening；The mix module, packet
It includes: the first audio mixing submodule, when the sample rate for the audio data after the screening is identical, to audio data after the screening
It is weighted and averaged, and using obtained result of weighted average as corresponding audio mixing result；Or the second audio mixing submodule, it is used for
After the screening when sample rate difference of audio data, resampling is carried out so that the screening to audio data after the screening
The sample rate of audio data is identical afterwards, and is weighted and averaged to audio data after the screening after resampling, and adds what is obtained
Weight average result is as corresponding audio mixing result.
6. device as claimed in claim 5, which is characterized in that the screening module is specifically used for choosing information volume maximum
If main line audio data, as audio data after screening.
7. such as device described in claim 5 or 6, which is characterized in that the number of audio data is between 1 to 9 after the screening.
8. device as claimed in claim 5, which is characterized in that the receiving module, comprising:
First receiving submodule is located at view networked server side, the packets of audio data for networked terminals of considering oneself as receiving；With/
Or
Second receiving submodule is located at view networked server side, whole from internet for being received by protocol conversion server
The packets of audio data at end.
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| CN201510130666.3A CN106161814B (en) | 2015-03-24 | 2015-03-24 | A kind of sound mixing method and device of Multi-Party Conference |
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