CN108206817B - Conference routing method and device - Google Patents
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- 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
- H04L65/40—Support for services or applications
- H04L65/403—Arrangements for multi-party communication, e.g. for conferences
- H04L65/4038—Arrangements for multi-party communication, e.g. for conferences with floor control
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- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/21—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being power information
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Abstract
The invention discloses a conference routing method, which comprises the following steps: selecting N paths of participated users with the largest voice energy mean value from the participated users as a first routing output value to be output, wherein N is a natural number; outputting the first routing output value as an initial second routing output value; the initial second routing output value is used as a feedback value, and a user who speaks continuously, a new user who speaks newly and a user to be selected are determined by combining the feedback value and the first routing output value; when the user to be selected appears in the first routing output value within the first time length, the user who continuously speaks, the new user to speak and the user to be selected are taken as the current second routing output value to be output; when the user to be selected does not appear in the first routing output value within the first time length, the user who continuously speaks and the new user who speaks are taken as the current second routing output value to be output; and updating the feedback value to be the current second routing output value. The invention also discloses a conference route selecting device.
Description
Technical Field
The present invention relates to routing technologies, and in particular, to a method and an apparatus for selecting a route for a conference.
Background
In the fields of voice communication and multimedia communication, conference capacity, i.e., the number of people supporting the largest participating users, is one of the important indicators of a voice conference or a user multimedia conference. When the number of participating users is large, the background noise or the speech noise generated by the multiple users speaking may cause the speech quality to be degraded.
The voice routing is an important mechanism for increasing conference capacity and improving voice quality, and the mechanism selects one or more paths of voice information of users from all the conference-participating users according to the information of the conference-participating users to decode and mix voice, and then sends the voice information to the other conference-participating users. The selected participating users are the people who rob the microphone, and the people who rob the microphone have the speaking right, and the voice of the people can be heard by the participating users. The voice routing mechanism can reduce the burden of the server, increase the number of the participants and improve the capacity of the conference system on the premise of ensuring the voice quality of the conference.
In the current voice conference or user multimedia conference, the routing mechanism generally performs routing according to an energy priority principle, that is: and selecting a route according to the speech energy of the participated users for speaking, wherein the users with large energy are preferentially selected for speaking.
However, in the current voice routing mechanism, only the current voice data input by the participating users is usually considered, which affects the voice smoothness of the user who makes the route selection.
Disclosure of Invention
In order to solve the foregoing technical problems, embodiments of the present invention desirably provide a conference routing method and apparatus, so as to improve voice smoothness of a routing speaking user, and further improve conference voice quality.
The technical scheme of the embodiment of the invention is realized as follows:
the embodiment of the invention provides a conference routing method, which comprises the following steps:
selecting N paths of participated users with the largest voice energy mean value from the participated users as a first routing output value to be output, wherein N is a positive integer;
outputting the first routing output value as an initial second routing output value;
the initial second routing output value is used as a feedback value, and a user who continuously speaks, a new user who speaks and a user to be selected are determined by combining the feedback value and the first routing output value;
when the user to be selected appears in a first routing output value within a first time length, the user who continuously speaks, the new user who speaks and the user to be selected are taken as a current second routing output value to be output; when the user to be selected does not appear in the first routing output value within the first time length, the user who continuously speaks and the new user who speaks are taken as the current second routing output value to be output;
and updating the feedback value to be the current second routing output value.
In the above solution, the determining, by combining the feedback value and the first routing output value, a user who speaks continuously, a new user who speaks newly, and a user to be selected includes:
comparing the participated user data in the first routing output value and the feedback value, and determining that the participated user shared in the first routing output value and the feedback value is a continuous speaking user;
determining the participated users which are not included in the feedback value in the first routing output value as new calling users;
and determining conference-participating users except the continuous speaking user in the feedback value as the users to be selected.
In the above scheme, the method further comprises:
before outputting the second routing output value, comparing the acquired participated user information with the previously acquired participated user information to determine a refunding user;
and deleting the conference user information of the conference user from the feedback value.
In the above scheme, the method further comprises: and before the first routing output value is output, calculating the average value of the voice energy of each participated user in the second time length to obtain an energy average value.
In the above scheme, the selecting, from among the participating users who participate in the conference, the N-way participating user whose average speech energy is the largest as the first routing output value to output includes:
and selecting the participated users with the same energy mean value, which are included in the feedback value, from the participated users with the same energy mean value when the participated users with the same energy mean value exist.
An embodiment of the present invention provides a conference routing device, including:
the first output unit is used for selecting N paths of participated users with the largest voice energy mean value from the participated users as a first path selection output value to be output, wherein N is a positive integer;
a second output unit for outputting the first routing output value as an initial second routing output value;
or when the user to be selected appears in the first routing output value within the first time length, the user who continuously speaks, the new user who speaks and the user to be selected are taken as the current second routing output value to be output; when the user to be selected does not appear in the first routing output value within the first time length, the user who continuously speaks and the new user who speaks are taken as the current second routing output value to be output;
a determining unit, configured to determine the speaking-continuing user, the new speaking user, and the user to be selected by using the initial second routing output value or the current second routing output value as a feedback value and combining the feedback value and the first routing output value.
In the foregoing solution, the determining unit is specifically configured to:
comparing the participated user data in the first routing output value and the feedback value, and determining that the participated user shared in the first routing output value and the feedback value is a continuous speaking user;
determining the participated users which are not included in the feedback value in the first routing output value as new calling users;
and determining conference-participating users except the continuous speaking user in the feedback value as the users to be selected.
In the foregoing solution, the apparatus further includes a deleting unit, configured to:
before outputting the second routing output value, comparing the acquired participated user information with the previously acquired participated user information to determine a refunding user;
and deleting the conference user information of the conference user from the feedback value.
In the foregoing solution, the apparatus further includes a calculating unit, configured to calculate an average value of voice energies of participating users in the second time period to obtain an energy average value before outputting the first routing output value.
In the foregoing solution, the first output unit is specifically configured to:
and selecting the participated users with the same energy mean value, which are included in the feedback value, from the participated users with the same energy mean value when the participated users with the same energy mean value exist.
The conference routing method and the device provided by the embodiment of the invention firstly select N paths of conference-participating users with the largest average value of voice energy from the conference-participating users as a first routing output value to be output, and use the first routing output value as an initial second routing output value; then, the second routing output value is used as a feedback value, and a user who continuously speaks, a new user who speaks and a user to be selected are determined by combining the feedback value and the first routing output value; when the user to be selected appears in a first routing output value within a first time length, the user who continuously speaks, the new user who speaks and the user to be selected are taken as a current second routing output value to be output; when the new user and the user to be selected do not appear in the first routing output value, outputting the new user and the user to be selected as the current second routing output value; and updating the feedback value to be the current second routing output value. Therefore, the embodiment of the invention is equivalent to two-stage route selection, the second route selection output value output by the two-stage route selection is taken as the feedback value in the two-stage route selection, the second route selection output value participates in the route selection process of the two-stage route selection, and the invalid user to be selected is removed in time by judging whether the user to be selected appears in the first route selection output value within the first time length, so that the current speaking user can be selected efficiently, the voice smoothness of the route selection speaking user is ensured, and the conference voice quality is improved.
Drawings
Fig. 1 is a flowchart of a conference routing method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of information flow during conference routing according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a conference routing device according to an embodiment of the present invention.
Detailed Description
So that the manner in which the features and aspects of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.
Fig. 1 is a flowchart of an implementation of a conference routing method according to an embodiment of the present invention, and as shown in fig. 1, the routing method according to the embodiment of the present invention includes the following steps:
and 101, selecting N paths of conference-participating users with the largest voice energy mean value from the conference-participating users as a first path-selecting output value to output, wherein N is a positive integer.
Before step 101 is executed, the embodiment of the present invention needs to acquire the information of the participating users in the conference, where the information of the participating users includes the total number of the participating users, the ID of the participating users, and the energy value of the current frame of the participating users; in the embodiment of the present invention, the time interval for acquiring the information of the participating users is one frame every 20 ms.
After the information of the participating users is obtained and before the first routing output value is output, preprocessing the information of the participating users in the information group of the participating users; the preprocessing comprises the steps of calculating the average value of the voice energy of each participated user in the second time length to obtain an energy average value; the second duration ranges between 100ms and 200 ms. And calculating the energy average value of the participated users in the second time length can effectively obtain the voice energy condition of the participated users, and preparing for the routing work.
This step 101 can be used as a step of one-level routing.
Preferably, in the embodiment of the present invention, the value of N is 3, but the value of N is not limited to 3, and may be adjusted according to actual situations. At the moment, if the number of the participated users is larger than three paths, the first routing output value comprises information of the three paths with the largest energy mean value and the participated users; and if the number of the participated users is not more than three, the first routing output value contains all the participated user information.
And 102, outputting the first routing output value as an initial second routing output value.
Here, when the second-stage routing is performed for the first time, the second routing output value is the first routing output value inputted.
And 103, determining a continuous speaking user, a new speaking user and a user to be selected by taking the initial second routing output value as a feedback value and combining the feedback value and the first routing output value.
The method comprises the following steps of determining a user who continuously speaks, a new user who speaks and a user to be selected:
comparing the participated user data in the first routing output value and the feedback value, and determining that the participated user shared in the first routing output value and the feedback value is a continuous speaking user;
determining the participated users which are not included in the feedback value in the first routing output value as new calling users;
and determining participated users except the continuous speaking user in the feedback value as the users to be selected.
The conference-participating user data comprises information such as ID of the conference-participating user and energy average value of voice of the conference-participating user.
In step 103, the data in the first routing output value and the feedback value are classified and determined, and preparation for the second-level routing is made.
Before outputting the second routing output value, deleting some invalid contents in the feedback value, wherein the specific process comprises the following steps: before outputting the second routing output value, comparing the acquired participated user information with the previously acquired participated user information to determine a refunding user; and deleting the conference user information of the conference user from the feedback value.
Here, after the fallback users are deleted, the number of the users to be selected is reduced, so that data processing is performed in the secondary routing process.
In this step 104, a secondary routing step may be performed, and whether to output the user to be selected in the secondary routing result is determined according to whether the user to be selected appears in the second routing output value within the first duration.
It can be seen that, in step 104, users who can make a suspicion about whether to continue speaking can be screened by judging to avoid that an excessive number of participating users enter the second routing output value; meanwhile, the speech users still in the speech process are prevented from being deleted, and the speech smoothness of the path selection speech users is guaranteed.
And 105, updating the feedback value to be the current second routing output value.
As shown in fig. 2, the second routing user output value output in step 102 or step 104 is used as a feedback value for the first-stage routing and the second-stage routing, specifically, the initial second routing user output value output in step 102 is used as a feedback value for the first-stage routing, and the current second routing user output value output in step 104 is used as a feedback value for the second-stage routing after the first-stage routing; the feedback value is applied in both steps, which is beneficial to improve the voice smoothness of the users who have participated in speaking.
In step 101 of the processing procedure in fig. 1, when there is a participating user with the same energy mean value in the process of selecting a participating user with the largest energy mean value, selecting a participating user included in the feedback value from among the participating users with the same energy mean value.
Correspondingly, if the participated users with the same energy mean value exist in the process of selecting the participated users with the maximum energy mean value, and the participated users with the same energy mean value are not included in the feedback value, at this time, the participated users with the same energy mean value are randomly selected to the N paths of participated users with the maximum energy mean value.
The conference routing method provided by the embodiment of the invention participates in the routing process of the secondary routing by taking the second routing output value output by the secondary routing as the feedback value in the primary routing and the secondary routing, and eliminates invalid users to be selected in time by judging whether the users to be selected appear in the first routing output value within the first time length, so that the current speaking users can be selected efficiently, the voice smoothness of the users speaking through routing is ensured, and the conference voice quality is further improved.
As shown in fig. 3, the routing device in the embodiment of the present invention specifically includes:
the first output unit 301 is configured to select, from the participating users that participate in the conference, N paths of participating users having the largest average value of speech energy as a first path selection output value to output, where N is a positive integer.
Before selecting the N paths of participating users with the largest energy mean value of voice, the information of the participating users needs to be obtained first, and the information of the participating users includes the total number of all the participating users, the ID of the participating users and the energy value of the current frame of the participating users. In the embodiment of the present invention, the time interval for acquiring information is one frame every 20 ms.
After the information of the participating users is obtained, the information in the information group of the participating users needs to be preprocessed. The conference routing device in the embodiment of the invention comprises a calculating unit, wherein in the preprocessing process, the calculating unit calculates the average value of the voice energy of each participated user in the second time length to obtain the energy average value before outputting the first routing output value. The second duration ranges between 100ms and 200 ms. And calculating the energy average value of the participated users in the second time length can effectively obtain the energy condition of the participated users, and the preparation is made for the route selection work.
The first output unit 301 is used to perform one-stage routing.
Preferably, in the embodiment of the present invention, the value of N is 3, but the value of N is not limited to 3, and may be adjusted according to actual situations. At the moment, if the number of the participated users is larger than three paths, the first routing output value comprises information of the three paths with the largest energy mean value and the participated users; and if the number of the participated users is not more than three, the first routing output value contains all the participated user information.
A second output unit 303, configured to output the first routing output value as an initial second routing output value; or when the user to be selected appears in the first routing output value within the first time length, the user who continuously speaks, the new user to speak and the user to be selected are taken as the current second routing output value to be output; and when the user to be selected does not appear in the first routing output value within the first time length, outputting the user who continuously speaks and the new user who speaks as the current second routing output value.
The second output unit 303 is used for secondary routing, and when the secondary routing is performed for the first time, the second routing output value is the input first routing output value.
Then, the second output unit 303 determines whether to output the user to be selected in the secondary routing result according to whether the user to be selected appears in the second routing output value within the first time period.
The current second routing output value of the second output unit 303 includes a user who speaks continuously and a user who speaks newly.
The technical scheme can screen the users who are in doubt about whether to continue speaking, and avoids the excessive number of participated users from entering a second routing output value; meanwhile, the speech users still in the speech process are prevented from being deleted, and the speech smoothness of the path selection speech users is guaranteed.
A determining unit 302, configured to determine, by using the initial second routing output value or the current second routing output value as a feedback value, a user who speaks continuously, a new user who speaks newly, and a user to be selected by combining the feedback value and the first routing output value.
The method comprises the following steps of determining a user who continuously speaks, a new user who speaks and a user to be selected:
comparing the participated user data in the first routing output value and the feedback value, and determining that the participated user shared in the first routing output value and the feedback value is a continuous speaking user;
determining the participated users which are not included in the feedback value in the first routing output value as new calling users;
and determining participated users except the continuous speaking user in the feedback value as the users to be selected.
The determining unit 302 performs classification determination on the data in the first routing output value and the feedback value, and can prepare for the second-level routing.
Before the user to be selected is determined, part of the content of the feedback value needs to be deleted. The conference routing device in the embodiment of the invention further comprises a deleting unit, which is used for comparing the acquired information of the participated users with the information of the participated users acquired last time before the second routing output value is output, and determining the refunding users;
and deleting the conference user information of the conference user from the feedback value.
After the quit users are deleted, the number of the users to be selected is reduced, and data processing is conveniently carried out in the secondary route selection process.
As shown in fig. 2, the second routing user output value of the second-level routing output is used as the feedback value of the first-level routing and the second-level routing. The application of the feedback value in the primary routing and the secondary routing is beneficial to improving the voice smoothness of the participated speaking users.
In the primary routing, the feedback value has an effect that when there is a participating user with the same energy mean value in the process of selecting the participating user with the largest energy mean value, the first output unit 301 selects the participating user included in the feedback value from among the participating users with the same energy mean value.
Correspondingly, if the participated users with the same energy mean value exist in the process of selecting the participated users with the maximum energy mean value, and the participated users with the same energy mean value are not included in the feedback value, at this time, the participated users with the same energy mean value are randomly selected to the N paths of participated users with the maximum energy mean value.
The conference routing device provided by the embodiment of the invention participates in the routing process of the secondary routing by taking the second routing output value output by the secondary routing as the feedback value in the primary routing and the secondary routing, and eliminates invalid users to be selected in time by judging whether the users to be selected appear in the first routing output value within the first time length, so that the current speaking users can be selected efficiently, and the voice smoothness of the users speaking through routing is ensured.
In practical applications, the first output Unit 301, the determining Unit 302, the second output Unit 303, the deleting Unit and the calculating Unit may be implemented by a Central Processing Unit (CPU), a Micro Processor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like, which are located on the conference routing apparatus.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A method for routing a conference, the method comprising:
selecting N paths of participated users with the largest voice energy mean value from the participated users as a first routing output value to be output, wherein N is a positive integer;
outputting the first routing output value as an initial second routing output value;
the initial second routing output value is used as a feedback value, and a user who continuously speaks, a new user who speaks and a user to be selected are determined by combining the feedback value and the first routing output value;
when the user to be selected appears in a first routing output value within a first time length, the user who continuously speaks, the new user who speaks and the user to be selected are taken as a current second routing output value to be output; when the user to be selected does not appear in the first routing output value within the first time length, the user who continuously speaks and the new user who speaks are taken as the current second routing output value to be output;
and updating the feedback value to be the current second routing output value.
2. The method of claim 1, wherein said determining a persistent speaking user, a new speaking user, and a candidate user in combination with said feedback value and said first routing output value comprises:
comparing the participated user data in the first routing output value and the feedback value, and determining that the participated user shared in the first routing output value and the feedback value is a continuous speaking user;
determining the participated users which are not included in the feedback value in the first routing output value as new calling users;
and determining conference-participating users except the continuous speaking user in the feedback value as the users to be selected.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
before outputting the second routing output value, comparing the acquired participated user information with the previously acquired participated user information to determine a refunding user;
and deleting the conference user information of the conference user from the feedback value.
4. The method according to claim 1 or 2, characterized in that the method further comprises: and before the first routing output value is output, calculating the average value of the voice energy of each participated user in the second time length to obtain an energy average value.
5. The method according to claim 1 or 2, wherein the selecting, as the first routing output value, the N participating users with the largest average value of speech energy among the participating users as the first routing output value, includes:
and selecting the participated users with the same energy mean value, which are included in the feedback value, from the participated users with the same energy mean value when the participated users with the same energy mean value exist.
6. A conference routing apparatus, the apparatus comprising:
the first output unit is used for selecting N paths of participated users with the largest voice energy mean value from the participated users as a first path selection output value to be output, wherein N is a positive integer;
a second output unit for outputting the first routing output value as an initial second routing output value;
or when the user to be selected appears in the first routing output value within the first time length, the user who continuously speaks, the new user who speaks and the user to be selected are taken as the current second routing output value to be output; when the user to be selected does not appear in the first routing output value within the first time length, the user who continuously speaks and the new user who speaks are taken as the current second routing output value to be output;
a determining unit, configured to determine the speaking-continuing user, the new speaking user, and the user to be selected by using the initial second routing output value or the current second routing output value as a feedback value and combining the feedback value and the first routing output value.
7. The apparatus according to claim 6, wherein the determining unit is specifically configured to:
comparing the participated user data in the first routing output value and the feedback value, and determining that the participated user shared in the first routing output value and the feedback value is a continuous speaking user;
determining the participated users which are not included in the feedback value in the first routing output value as new calling users;
and determining conference-participating users except the continuous speaking user in the feedback value as the users to be selected.
8. The apparatus according to claim 6 or 7, wherein the apparatus further comprises a deletion unit configured to:
before outputting the second routing output value, comparing the acquired participated user information with the previously acquired participated user information to determine a refunding user;
and deleting the conference user information of the conference user from the feedback value.
9. The apparatus according to claim 6 or 7, wherein the apparatus further comprises a calculating unit, configured to calculate an average value of the speech energies of the participating users in the second time period to obtain an energy average value before outputting the first routing output value.
10. The apparatus according to claim 6 or 7, wherein the first output unit is specifically configured to:
and selecting the participated users with the same energy mean value, which are included in the feedback value, from the participated users with the same energy mean value when the participated users with the same energy mean value exist.
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