CN112887652B - System and method for improving quality of network conference based on intelligent microphone array - Google Patents
System and method for improving quality of network conference based on intelligent microphone array Download PDFInfo
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- CN112887652B CN112887652B CN202110082829.0A CN202110082829A CN112887652B CN 112887652 B CN112887652 B CN 112887652B CN 202110082829 A CN202110082829 A CN 202110082829A CN 112887652 B CN112887652 B CN 112887652B
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- 230000001815 facial effect Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 abstract description 20
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
- H04R1/265—Spatial arrangements of separate transducers responsive to two or more frequency ranges of microphones
Abstract
The invention discloses a system and a method for improving the quality of a network conference based on an intelligent microphone array, wherein the method comprises the following steps: automatically allocating a unique IP address for the intelligent microphone; the method comprises the steps that a microphone camera on an intelligent microphone is used for obtaining a face image of a conference participant corresponding to the intelligent microphone in real time, obtaining a judgment result of whether the conference participant is a speaker or not, and sending the judgment result and an IP address of the intelligent microphone to a system host; and according to the judgment result and the IP address, establishing connection with the intelligent microphone corresponding to the speaker, and disconnecting the connection with the intelligent microphone of the speaker. According to the invention, the conference speaker is identified through the microphone camera on the intelligent microphone, so that the load of a system host is reduced, the bandwidth pressure is reduced, and the conference communication quality is improved; the IP address of each intelligent microphone is utilized to automatically establish or break communication link with the system host, manual switching of conference participants is not needed, and the use is convenient.
Description
Technical Field
The invention relates to the technical field of intelligent microphones and network conferences, in particular to a system and a method for improving the quality of a network conference based on an intelligent microphone array.
Background
As internet technology has developed, more meetings and conferences have been replaced by remote web conferences.
The existing network conference system is generally composed of a plurality of microphones, a loudspeaker and a network communication host. However, in the use process, if a plurality of microphones are turned on at the same time, great interference noise is generated, and the sound quality of a speaker is influenced.
Therefore, in the current method for solving the noise of the network conference system, usually, the corresponding microphone is closed by the participant who does not speak, and the participant is opened again when speaking, but the participant feels troublesome when frequently switching on and off the microphone, and the participant often forgets to start the network conference and cannot hear the microphone; forgetting to turn off the network, the network conference will be affected by the noise of whistling.
In view of this, there is an urgent need to improve the existing network conference system to improve the communication quality of the network conference and improve the effect of the network conference.
Disclosure of Invention
The invention aims to solve the technical problems that the existing network conference system has large interference noise and influences the conference quality.
In order to solve the technical problems, the technical scheme adopted by the invention is to provide a network conference system based on an intelligent microphone array, which comprises a local conference room and an opposite conference room which are connected to a network conference room through the internet, wherein a system host and a microphone array consisting of a plurality of intelligent microphones are respectively arranged in the local conference room and the opposite conference room, each intelligent microphone corresponds to a conference participant,
the DHCP server is used for automatically allocating a local unique IP address to the system host and each intelligent microphone;
the intelligent microphone is connected with the DHCP server, a microphone camera is arranged on the intelligent microphone, and the intelligent microphone is used for acquiring a face image of a conference participant corresponding to the intelligent microphone in real time, acquiring a judgment result of whether the conference participant is a speaker, and sending the judgment result and an IP address of the intelligent microphone corresponding to the speaker to the system host;
the system host is connected to the DHCP server, establishes a link with the intelligent microphone corresponding to the speaker according to the judgment result and the IP address, and disconnects the link with the intelligent microphone of the speaker;
and the system host sends the facial image of the speaker and the sound data of the corresponding intelligent microphone to a network conference room through the Internet for showing.
In the above network conference system, the microphone array is arranged in a ring shape.
In the above network conference system, the method further includes:
the distance sensor is connected with the system host and used for acquiring the distance between the distance sensor and the speaker in real time;
the microphone arrays are arranged linearly, coordinate positions are preset, the system host stores a list of the coordinate positions and IP addresses of the intelligent microphones, the distances between any two adjacent intelligent microphones and a speaker are compared in real time, and the corresponding intelligent microphones are switched according to the distances.
In the network conference system, the intelligent microphone obtains the coordinate position of the intelligent microphone by scanning a bar code on a conference table.
In the network conference system, the intelligent microphone is provided with an input device for setting the coordinate position of the intelligent microphone.
In the network conference system, the input device is a numeric keyboard and is used for inputting the position number of the intelligent microphone, and the system host stores the coordinate position corresponding to the position number.
The invention also provides a method for improving the conversation quality of the network conference, which comprises the following steps:
respectively automatically allocating unique IP addresses for intelligent microphones in a local conference room and an opposite conference room through system hosts in the local conference room and the opposite conference room;
the method comprises the steps that a microphone camera on an intelligent microphone corresponding to each conference participant is used for obtaining a face image of the corresponding conference participant in real time, a judgment result of whether the conference participant is a speaker is obtained, and the judgment result and an IP address of the intelligent microphone corresponding to the speaker are sent to a system host of a local terminal;
according to the judgment result and the IP address, establishing connection with the intelligent microphone corresponding to the speaker, and disconnecting the connection with the intelligent microphone of the speaker;
and sending the facial image of the speaker and the sound data of the corresponding intelligent microphone to a network conference room through the Internet for showing.
In the above method, further comprising:
the distance sensor is connected with the system host at the local end and used for acquiring the distance from the speaker in real time;
the microphone arrays are arranged linearly, coordinate positions are preset, a list of the coordinate positions and IP addresses of the intelligent microphones at the local end is stored in the system host, the distances between any two adjacent intelligent microphones and a speaker are compared in real time, and the corresponding intelligent microphones are switched according to the distances.
In the method, the intelligent microphone scans a bar code on the conference table to obtain the coordinate position of the intelligent microphone.
In the method, the intelligent microphone is provided with an input device for setting the coordinate position of the intelligent microphone.
Compared with the prior art, the system and the method for improving the quality of the network conference based on the intelligent microphone array, provided by the invention, have the advantages that the DHCP server is used for automatically allocating the local unique IP address for the system host and each intelligent microphone, the microphone camera is used for acquiring the face image of the conference participant corresponding to the microphone camera in real time, and the judgment result of whether the conference participant is the speaker is obtained; according to the judgment result and the IP address, the link with the intelligent microphone corresponding to the speaker is established, and the link with the intelligent microphone of the speaker is disconnected, so that the intelligent microphone of the speaker is prevented from generating interference, the conference quality is improved, a manual switch is not needed, and the use is convenient.
Drawings
FIG. 1 is a schematic diagram of a system for improving quality of a web conference based on an intelligent microphone array according to the present invention;
FIG. 2 is a schematic diagram of a local conference room according to the present invention;
FIG. 3 is a schematic diagram of a conference room with a linear array of intelligent microphones according to the present invention;
fig. 4 is a flowchart of a method for improving the quality of a web conference according to the present invention.
In fig. 1-4, the reference numerals are as follows:
a home terminal conference room 100, an opposite terminal conference room 200 and a network conference room 300;
DHCP server 30, system host 40, smart microphone 50, conference participant 60, projection or whiteboard 70, distance sensor 80;
a microphone camera 51.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
The realization principle of the invention is as follows: the method comprises the steps of automatically allocating a unique IP address to each intelligent microphone, automatically establishing a communication link with the intelligent microphone corresponding to a speaker according to a conference speaker obtained through identification, and disconnecting the communication link with the intelligent microphone of the non-speaker, so that the influence of the intelligent microphone of the non-speaker on the intelligent microphone of the speaker is eliminated, and the conversation quality and the use convenience of the network conference are improved.
In order to make the technical solution and implementation of the present invention more clearly explained and illustrated, several preferred embodiments for implementing the technical solution of the present invention are described below.
It should be noted that the terms of orientation such as "inside, outside", "front, back" and "left and right" are used herein as reference objects, and it is obvious that the use of the corresponding terms of orientation does not limit the scope of protection of the present invention.
Example 1.
Referring to fig. 1, fig. 1 is a schematic diagram of a system for improving quality of a web conference based on an intelligent microphone array according to embodiment 1 of the present invention.
As shown in fig. 1, a system for improving quality of a web conference based on an intelligent microphone array according to embodiment 1 of the present invention includes a local conference room 100 and an opposite conference room 200 connected to the web conference room 100 through the internet.
The home conference room 100 and the peer conference room 200 are the same in structure, and each of the home conference room 100 and the peer conference room is provided with a DHCP server 30, a system host 40, and a microphone array composed of a plurality of smart microphones 50, and each of the smart microphones 50 corresponds to one conference participant 60.
As shown in fig. 2, the DHCP server 30 is used to automatically assign a locally unique IP address to each smart microphone 50 at the home terminal. Each smart microphone 50 is connected to the DHCP server 30, and when the smart microphone 50 is turned on, the DHCP server 30 automatically assigns a locally unique IP address to each smart microphone 50, and makes each smart microphone 50 and the system host 40 be located in the same network segment, thereby joining the same lan. The smart microphone 50 sends its IP address to the system host 40, and the system host 40 updates and maintains a list of IP addresses for the smart microphone 50 in real time. Each time the smart microphone is turned on, the DHCP server 30 reassigns its IP address, and the smart microphone 50 sends its IP address to the system host 40.
Each intelligent microphone 50 is provided with a microphone camera 51 for acquiring a facial image of a conference participant 60 corresponding thereto in real time, recognizing a judgment result of whether the conference participant is a speaker through facial image recognition, and sending the judgment result together with an IP address of the intelligent microphone corresponding to the speaker to the system host 40 at the home terminal. Recognizing the speaker from the facial image is achieved by the prior art and will not be described herein.
The system host 40 establishes a communication link with the smart microphone corresponding to the speaker and disconnects the communication link with the smart microphone of the non-speaker according to the determination result (whether it is the speaker) and the IP address of the smart microphone.
When the intelligent microphone judges that the corresponding participant is a speaker, a communication link establishing request is automatically sent to the system host 40, when the communication link establishing request is sent, the IP address of the intelligent microphone is carried, after the system host 40 receives the communication link establishing request, the communication link is automatically established with the corresponding intelligent microphone according to the IP address of the intelligent microphone, and after the communication link is established, the intelligent microphone sends the audio and video signals of the intelligent microphone to the system host. When the intelligent microphone judges that the corresponding participant is not the speaker, the intelligent microphone automatically sends a communication link disconnection request to the system host, and simultaneously carries the IP address of the intelligent microphone, and after the system host 40 receives the communication link disconnection request, the communication link with the corresponding intelligent microphone is automatically disconnected according to the IP address of the intelligent microphone.
The system host 40 sends the face image of the speaker and the sound data of the corresponding smart microphone to the network conference room through the internet for presentation. Therefore, the radio signals of the intelligent microphones of the speakers cannot be transmitted into the system host, so that the interference to the intelligent microphones of the speakers is avoided, and the sound quality is improved.
Of course, the system host 40 may also send only voice, not video, as desired.
In a conventional intelligent conference system, a camera is usually used to acquire images of participants in a whole conference, and although a speaker can be determined, the microphone used by the speaker cannot be identified, so that the microphone of a speaker which is not speaking cannot be accurately cut off.
Certainly, the identification can be added to the microphone to enable the camera to identify, but the microphone needs to be identified and sent to the system host in real time, so that the workload of the system host is large, and the conference quality is affected.
According to the invention, whether the conference participant is a speaker is identified by the intelligent microphone corresponding to the conference participant, the host system does not participate in identification, the load of the system host is reduced, and a channel is not required to be reserved for each participant like the traditional network conference, so that the bandwidth pressure is further reduced, and the conference communication quality is improved.
The intelligent microphone camera is always turned on, and only when the corresponding conference speaker is identified, the audio and the video are uploaded. If the microphone camera detects that no conference participant exists in the corresponding position, the power supply of the intelligent microphone is turned off, and interference is further reduced.
Example 2.
This embodiment 2 is a further improvement on the embodiment 1, and in this embodiment 2, the microphone array is arranged linearly, that is, each smart microphone is arranged in a straight line, which is more suitable for the lecture or report mode in which the speaker moves around before the projection or white board 70.
As shown in fig. 3, in the present embodiment 2, a distance sensor 80 is provided, and the distance sensor 70 is connected to the system host 40 at the local end, and is used for acquiring the distance from the speaker in real time.
When the link between each intelligent microphone 50 and the system host 40 is established, the IP address and the position of each intelligent microphone 50 are reported, the position of each lower intelligent microphone 50 is preset, the position of the distance sensor 70 is also preset, the system host 40 stores the corresponding relation between the coordinate position of each intelligent microphone 50 and the IP address thereof in an IP address list maintained by the system host, and also stores the position coordinate of the distance sensor 70, the distance between the system host and the conference speaker can be detected by the distance sensor 70, the distance between the conference speaker and each intelligent microphone can be calculated and obtained by the coordinate position relation between the distance sensor 70 and each intelligent microphone 50 stored in the system host, and the communication link is proposed with the intelligent microphone according to the IP address of the nearest intelligent microphone, so that the voice quality is effectively improved. At this time, voice and video are uploaded through the nearest smart microphone.
The distance sensor 70 may be an ultrasonic distance sensor, or may be obtained by a camera based on image calculation, and the image based distance measurement also belongs to the prior art.
Example 3.
The embodiment 3 further refines the embodiment 2, and provides a method for implementing a preset position of an intelligent microphone.
The first method is to set coordinates on a conference table, set an input device on an intelligent microphone, input the coordinates on the intelligent microphone, and then send the coordinates together with an IP address to a system host. The input device can adopt a numeric keyboard or a touch screen, the current position number of the intelligent microphone is input, and the system host stores the coordinate position corresponding to the position number.
The second method is that the smart microphone obtains the coordinate position of the smart microphone by scanning a plurality of barcodes arranged along a straight line on the conference table.
Example 4.
Specific embodiment 4 of the present invention provides a method for improving quality of a web conference based on an intelligent microphone array, as shown in fig. 4, the method includes the following steps:
step 110, automatically allocating unique IP addresses for the intelligent microphones in the local conference room and the opposite conference room respectively through the system host in the local conference room and the system host in the opposite conference room;
step 120, acquiring a face image of each conference participant in real time through a microphone camera on the intelligent microphone corresponding to each conference participant, acquiring a judgment result of whether the conference participant is a speaker, and sending the judgment result and an IP address of the intelligent microphone corresponding to the speaker to the system host at the local end;
step 130, according to the judgment result and the IP address, establishing connection with the intelligent microphone corresponding to the speaker, and disconnecting the connection with the intelligent microphone of the speaker;
and step 140, sending the face image of the speaker and the sound data of the corresponding intelligent microphone to a network conference room through the Internet for showing.
In the method of the present invention, the arrangement of the microphone array in a linear arrangement is the same as that in the above embodiments 2 and 3, and will not be described herein again.
By combining the description of the above specific embodiments, compared with the prior art, the system for improving the quality of the network conference based on the intelligent microphone array provided by the invention has the following advantages:
1. the conference speaker is identified through the microphone camera on the intelligent microphone, the system host does not participate in identification, the load of the system host is reduced, the bandwidth pressure is reduced, and the conference communication quality is improved.
2. The IP address of each intelligent microphone is utilized to automatically establish or break communication link with the system host, manual switching of conference participants is not needed, the use is convenient, and the conference conversation quality is ensured.
3. The distance sensor is utilized to switch the speaker to the nearest intelligent microphone, and the conference effect is greatly improved.
4. The intelligent microphone and the distance sensor are utilized to preset the coordinate identification distance, and the device is convenient and practical.
5. The position number is identified by the scanning code, and the corresponding relation between the position number and the coordinate position is preset, so that the position setting of the intelligent microphone is simplified.
The present invention is not limited to the above preferred embodiments, and any structural changes made under the teaching of the present invention shall fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a network conference system based on intelligent microphone array, includes local meeting room and the opposite terminal meeting room that is connected to network meeting room through the internet, the local meeting room with the microphone array that is equipped with the system's host computer and constitutes by a plurality of intelligent microphones in the opposite terminal meeting room respectively, its characterized in that:
the DHCP server is used for automatically allocating a local unique IP address to the system host and each intelligent microphone;
the intelligent microphone is connected with the DHCP server, a microphone camera is arranged on the intelligent microphone, and the intelligent microphone is used for acquiring a facial image of a conference speaker in real time and sending the facial image and an IP address of the intelligent microphone corresponding to the speaker to the system host;
the ultrasonic distance sensor is connected with the system host and is used for acquiring the distance between the ultrasonic distance sensor and the conference speaker in real time;
the system comprises a microphone array, a system host and a conference speaker, wherein the microphone array is arranged linearly, the coordinate position of each intelligent microphone and the coordinate position of an ultrasonic distance sensor are preset, the system host stores a list of the coordinate position of each intelligent microphone and the IP address of the intelligent microphone, compares the distance between each intelligent microphone and a speaker in real time according to the distance between the ultrasonic distance sensor and the conference speaker, and judges the intelligent microphone used by the speaker according to the distance;
the system host is connected to the DHCP server, establishes a link with the intelligent microphone used by the speaker according to the intelligent microphone used by the speaker and the corresponding IP address, and disconnects the link with the intelligent microphone not used by the speaker;
the system host sends the facial image of the speaker and the sound data of the corresponding intelligent microphone to a network conference room through the Internet for showing;
and the intelligent microphone obtains the coordinate position of the intelligent microphone by scanning a bar code on the conference table.
2. The netmeeting system of claim 1, wherein the smart microphone is provided with an input device for setting its coordinate position.
3. The netmeeting system of claim 2, wherein the input device is a numeric keypad for inputting a position number of the smart microphone, and the system host stores a coordinate position corresponding to the position number.
4. A method for improving the conversation quality of a network conference is characterized by comprising the following steps:
respectively automatically allocating unique IP addresses for intelligent microphones in a local conference room and an opposite conference room through system hosts in the local conference room and the opposite conference room;
the method comprises the following steps that a plurality of intelligent microphones are linearly arranged, and the coordinate position of each intelligent microphone and the coordinate position of an ultrasonic distance sensor are preset;
the method comprises the steps that a microphone camera on an intelligent microphone is used for obtaining a facial image of a conference speaker in real time, and a distance between an ultrasonic distance sensor and the conference speaker is obtained in real time through the ultrasonic distance sensor;
the system host stores a list of the coordinate position and the IP address of each intelligent microphone, compares the distance between each intelligent microphone and a speaker according to the distance between the ultrasonic distance sensor and the conference speaker in real time, and judges the intelligent microphone used by the speaker according to the distance;
according to the intelligent microphone used by the speaker and the corresponding IP address, establishing connection with the intelligent microphone used by the speaker, and disconnecting the connection with the intelligent microphone not used by the speaker;
sending the face image of the speaker and the corresponding sound data of the intelligent microphone to a network conference room through the Internet for showing;
and the intelligent microphone obtains the coordinate position of the intelligent microphone by scanning a bar code on the conference table.
5. The method of claim 4, wherein the smart microphone is provided with an input device for setting its coordinate position.
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