CN114584537B - Wireless simultaneous interpretation method, server and system based on WiFi - Google Patents
Wireless simultaneous interpretation method, server and system based on WiFi Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
- H04L65/403—Arrangements for multi-party communication, e.g. for conferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/04—Protocols for data compression, e.g. ROHC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/164—Adaptation or special uses of UDP protocol
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a wireless simultaneous interpretation method, a server and a system based on WiFi, wherein the method comprises the following steps: s1: the simultaneous interpretation acquisition terminal interacts with the WiFi simultaneous interpretation host to drive the WiFi simultaneous interpretation host to distribute channel codes to the simultaneous interpretation acquisition terminal, and external voice signals are acquired through the simultaneous interpretation acquisition terminal to generate audio data and are sent to the WiFi simultaneous interpretation host; s2: the WiFi simultaneous transmission host is driven to endow audio data channel codes, then compressed into compressed audio packets, and the compressed audio packets are forwarded through the wireless AP; s3: and driving the WiFi simultaneous transmission receiving terminal to acquire a channel selection instruction so as to acquire a corresponding compressed audio packet. In the invention, wireless simultaneous interpretation audio transmission is carried out through WIFI, the layout workload of communication lines in a conference site is reduced, complicated connection steps are omitted, and the number of simultaneous transmission receiving terminals is not limited.
Description
Technical Field
The invention relates to the technical field of simultaneous interpretation of large conferences, in particular to a wireless simultaneous interpretation method, a server and a system based on WiFi.
Background
In a large international conference, participants come from different places generally, so the types of languages good for the participants are different, and therefore, the simultaneous interpretation work in the conference is particularly important, the traditional international conference adopts a wired form to transmit audio data, so that the field wiring engineering quantity is huge, the energy consumption during the conference is also small and numerous, and the development cost of the large international conference is high.
In recent years, with the development of wireless technology, a part of large conference rooms begin to use wireless form to perform simultaneous interpretation of audio data, which is mainly divided into three forms: u-segment wireless simultaneous transmission, 2.4G wireless simultaneous transmission and infrared wireless simultaneous transmission. The U-segment wireless co-transmission technology and the 2.4G wireless co-transmission technology generally have the obvious defects that co-frequency interference (such as on-site wireless equipment and 2.4G WiFi) is easy to cause and effective monitoring cannot be carried out on available channels, so that the U-segment wireless co-transmission technology and the 2.4G wireless co-transmission technology cannot be applied to large-scale international conferences, and infrared wireless co-transmission needs to be combined with conference site environments to deploy a plurality of infrared emission panels and needs to be placed through engineering calculation, are easy to be shielded and influenced, cannot bypass barriers, and are poor in installation and building attractiveness.
Disclosure of Invention
In order to overcome the defects of the prior art, an object of the present invention is to provide a WiFi-based wireless simultaneous interpretation method, which can solve the problems of poor transmission quality and easy environmental interference commonly existing in the prior wireless simultaneous interpretation technology.
The second objective of the present invention is to provide a WiFi-based wireless simultaneous interpretation server, which can solve the problems of poor transmission quality and easy environmental interference commonly existing in the existing wireless simultaneous interpretation technology.
The third objective of the present invention is to provide a WiFi-based wireless simultaneous interpretation system, which can solve the problems of poor transmission quality and easy environmental interference commonly existing in the existing wireless simultaneous interpretation technology.
In order to achieve one of the above purposes, the technical scheme adopted by the invention is as follows:
a WiFi-based wireless simultaneous interpretation method comprises the following steps:
s1: the method comprises the steps that a plurality of simultaneous interpretation acquisition terminals interact with a WiFi simultaneous interpretation host, the WiFi simultaneous interpretation host is driven to distribute channel codes to the simultaneous interpretation acquisition terminals, external voice signals are acquired in real time through the simultaneous interpretation acquisition terminals, audio data are generated and are sent to the WiFi simultaneous interpretation host through a wired network;
s2: the WiFi simultaneous transmission host is driven to endow the audio data with channel codes corresponding to the simultaneous interpretation acquisition terminal, the audio data are compressed into compressed audio packets, and the compressed audio packets are forwarded to a target area through the wireless AP;
s3: and driving the WiFi simultaneous transmission receiving terminal to acquire an external channel selection instruction so as to acquire a compressed audio packet corresponding to the channel selection instruction.
Preferably, the simultaneous interpretation and acquisition terminal is connected to the WiFi simultaneous interpretation host computer in a network hand-pulling mode.
Preferably, the S1 is specifically realized by the following steps:
s11: interacting with a WiFi simultaneous interpretation acquisition terminal through a plurality of simultaneous interpretation acquisition terminals, driving the WiFi simultaneous interpretation acquisition terminal to distribute channel codes to the simultaneous interpretation acquisition terminal, and storing the simultaneous interpretation acquisition terminal into a simultaneous interpretation audio queue;
s12: acquiring external voice signals in real time through a plurality of simultaneous interpretation acquisition terminals;
s13: driving the simultaneous interpretation acquisition terminal to convert the voice signal into PCM audio data;
s14: and driving the simultaneous interpretation acquisition terminal to pack the PCM audio data into a UDP audio data packet, and sending the UDP audio data packet to the WiFi simultaneous interpretation host through the Ethernet interface.
Preferably, S2 is specifically realized by the following steps:
s21: the UDP audio data packet is analyzed into PCM audio data through the WiFi simultaneous transmission host, the PCM audio data and the channel codes corresponding to the simultaneous interpretation acquisition terminals are given, the PCM audio data are compressed into a compressed audio packet through an SBC algorithm, and a UDP multicast packet is formed;
s22: and driving the WiFi synchronous transmission host to forward the UDP multicast packet to the target area through the wireless AP.
Preferably, the step S21 is specifically realized by the following steps:
s211: analyzing the UDP audio data packet into PCM audio data through the WiFi simultaneous transmission host, and giving the PCM audio data and a channel code corresponding to the simultaneous interpretation acquisition terminal;
s212: judging whether the quantity of the current PCM audio data reaches a preset value, if so, executing S213, otherwise, performing zero padding operation to generate mute data, endowing channel codes of simultaneous interpretation acquisition terminals which do not send the PCM audio data to the WiFi simultaneous transmission host computer with the mute data, and executing S214;
s213: compressing PCM audio data into compressed audio packets through an SBC algorithm, forming UDP multicast packets, and executing S22;
s214: the PCM audio data and the mute data are compressed into compressed audio packets by the SBC algorithm and constitute UDP multicast packets, and S22 is performed.
Preferably, the channel selection instruction includes a channel code.
Preferably, the step S3 is specifically realized by the following steps:
s31: driving the WiFi simultaneous transmission receiving terminal to obtain an external channel selection instruction;
s32: carrying out signal search through a WiFi simultaneous transmission receiving terminal, and periodically switching channels to monitor so as to obtain channel codes;
s33: judging whether the channel code in the UDP multicast packet corresponds to the channel selection instruction, if so, executing S34, otherwise, executing S32;
s34: and the WiFi simultaneous transmission receiving terminal stops signal search and outputs one of PCM audio data and mute data in the UDP multicast packet to the audio output terminal.
In order to achieve the second purpose, the technical scheme adopted by the invention is as follows:
a WiFi-based wireless simultaneous interpretation server comprising a memory and a processor;
a memory for storing program instructions;
a processor for executing the program instructions to perform the WiFi-based wireless simultaneous interpretation method as described above.
In order to achieve the third purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a wireless simultaneous interpretation system based on wiFi, includes a plurality of simultaneous interpretation collection terminals, wiFi with biography host computer, wireless AP, wiFi with passing receiving terminal, audio output terminal and like above-mentioned wiFi based wireless simultaneous interpretation server, simultaneous interpretation collection terminals, wiFi with passing host computer, wireless AP, wiFi with passing receiving terminal and audio output terminal all with wiFi based wireless simultaneous interpretation server connection, simultaneous interpretation collection terminal is connected to wiFi with passing host computer through network hand-in-hand mode, wiFi with passing the host computer through wireless AP with passing the input of receiving terminal with passing, the output and the audio output terminal of wiFi with passing the receiving terminal are connected.
Compared with the prior art, the invention has the beneficial effects that: the voice signals collected by the plurality of simultaneous interpretation collecting terminals in real time are timely sent to the WiFi simultaneous interpretation host in a wired mode, delay is reduced, audio data of the WiFi simultaneous interpretation host are forwarded to a target area through the wireless AP, all WiFi simultaneous interpretation receiving terminals in a conference site can selectively receive the audio data and send the audio data to participants to listen, the number of WiFi simultaneous interpretation receiving terminals in the conference site does not need to be limited, circuit layout in the conference room is reduced, the number and layout of simultaneous interpretation equipment in the conference room are simplified, conference cost is reduced, and conference efficiency is improved.
Drawings
Fig. 1 is a flowchart of a WiFi-based wireless simultaneous interpretation method according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
The invention is further described with reference to the following drawings and detailed description:
in the invention, wiFi used by the wireless AP is 5GWIFi, the wireless AP has the characteristics of multiple channels and high bandwidth, the wireless AP can automatically detect the channel cleanliness and switch to a clean channel, the sampling rate of the simultaneous interpretation acquisition terminal is 48KHz, the simultaneous interpretation acquisition terminal can be a microphone, a microphone and the like, and the audio output terminal can be a loudspeaker, a sound box, an earphone and other equipment.
The first embodiment is as follows:
as shown in fig. 1, a WiFi-based wireless simultaneous interpretation method includes the following steps:
s1: the method comprises the steps that a plurality of simultaneous interpretation acquisition terminals interact with a WiFi simultaneous interpretation host, the WiFi simultaneous interpretation host is driven to distribute channel codes to the simultaneous interpretation acquisition terminals, external voice signals are acquired in real time through the simultaneous interpretation acquisition terminals, audio data are generated and are sent to the WiFi simultaneous interpretation host through a wired network;
in this implementation, the simultaneous interpretation and acquisition terminal is connected to the WiFi simultaneous interpretation host computer through a network hand-in-hand manner. Namely, a plurality of microphones are connected in series by network cables (namely, connected by hand and hand); specifically, the S1 is specifically realized by the following steps:
s11: interacting with a WiFi simultaneous interpretation acquisition terminal through a plurality of simultaneous interpretation acquisition terminals, driving the WiFi simultaneous interpretation acquisition terminal to distribute channel codes to the simultaneous interpretation acquisition terminal, and storing the simultaneous interpretation acquisition terminal into a simultaneous interpretation audio queue;
in this embodiment, all the simultaneous interpretation acquisition terminals connected to the WiFi simultaneous interpretation host are driven to interact with the WiFi simultaneous interpretation host in advance, so that the WiFi simultaneous interpretation host allocates channel codes to the simultaneous interpretation acquisition terminals, and stores the simultaneous interpretation acquisition terminals into a simultaneous interpretation audio queue, preferably, the simultaneous interpretation acquisition terminals in the simultaneous interpretation audio queue are connected to an ethernet port of the WiFi simultaneous interpretation host through a connection manner of a hand, and further, the number of the simultaneous interpretation acquisition terminals in the simultaneous interpretation audio queue is 16.
S12: acquiring external voice signals in real time through a plurality of simultaneous interpretation acquisition terminals;
specifically, on large-scale international conference, a plurality of simultaneous interpretation collection terminals gather interpretation of a plurality of languages respectively, for example microphone 1 gathers english, microphone 2 gathers french and microphone 3 gathers german, the acquisition time is gone on in step, and microphone 3's data output end is connected with microphone 2's data input end, microphone 2's data output end and microphone 1's data input end, microphone 1's data output end and wiFi are with passing the host computer, increase the number that wiFi is with passing the simultaneous interpretation collection terminal that the host computer is connected with passing, reduce communication cable's the arrangement and the data of repeater, optimize resource and equipment layout.
S13: driving the simultaneous interpretation acquisition terminal to convert the voice signal into PCM audio data;
specifically, the voice signal collected by the simultaneous interpretation collecting terminal is converted from an analog signal to PCM audio data (digital signal), so that the problem of data distortion in the transmission process is avoided.
S14: and driving the simultaneous interpretation acquisition terminal to pack the PCM audio data into a UDP audio data packet, and sending the UDP audio data packet to the WiFi simultaneous transmission host through the Ethernet interface.
Specifically, PCM audio data is packaged into UDP audio data packets, the time delay of the data in the sending stage is reduced, the WiFi co-transmission host does not need to maintain a complex connection state table, the resource consumption of the WiFi co-transmission host is reduced, and the WiFi co-transmission host can acquire the audio collected by the co-acoustic interpretation collection terminal in real time through a wired connection mode (Ethernet interface).
S2: the WiFi simultaneous transmission host is driven to endow the audio data with channel codes corresponding to the simultaneous interpretation acquisition terminal, the audio data are compressed into compressed audio packets, and the compressed audio packets are forwarded to a target area through the wireless AP;
specifically, when the WiFi simultaneous interpretation host acquires the audio data sent by the simultaneous interpretation acquisition terminal, the audio content of the same translation needs to be processed, so that the participant can switch to a suitable interpretation audio in time in the conference, preferably, the S2 is specifically realized by the following steps:
s21: the UDP audio data packet is analyzed into PCM audio data through the WiFi simultaneous transmission host, the PCM audio data and the channel codes corresponding to the simultaneous interpretation acquisition terminals are given, the PCM audio data are compressed into a compressed audio packet through an SBC algorithm, and a UDP multicast packet is formed;
preferably, different channel codes are assigned to PCM audio data sent by different simultaneous interpretation acquisition terminals, so that a participant can conveniently select corresponding audio to listen to, and simultaneously, the audio data is fully compressed by using an SBC algorithm to ensure the audio quality of the audio, specifically, S21 is specifically implemented by the following steps:
s211: analyzing the UDP audio data packet into PCM audio data through the WiFi synchronous transmission host, and giving the PCM audio data and a channel code corresponding to the synchronous interpretation acquisition terminal;
specifically, the WiFi simulcast host analyzes a UDP audio data packet sent by the microphone 1 into PCM audio data, and simultaneously endows the PCM audio data with a channel code corresponding to the microphone 1, and also processes 8230, 8230and 8230of the microphone 2 and the microphone 3.
S212: judging whether the quantity of the current PCM audio data reaches a preset value, if so, executing S213, otherwise, performing zero padding operation to generate mute data, endowing channel codes of simultaneous interpretation acquisition terminals which do not send the PCM audio data to the WiFi simultaneous transmission host computer with the mute data, and executing S214;
specifically, the WiFi co-transmitting host determines whether the number of PCM audio data sent by the co-interpretation acquisition terminals in the current synchronous audio queue reaches a preset value, preferably, the number of the co-interpretation acquisition terminals in the synchronous audio queue is 16, that is, in this embodiment, the WiFi co-transmitting host should obtain 16 paths of PCM audio data by analyzing UDP audio data packets sent by the co-interpretation acquisition terminals in the synchronous audio queue, and when the number of the PCM audio data is less than 16 paths, a zero padding operation is performed to generate mute data, and channel codes of the co-interpretation acquisition terminals that do not send PCM audio data to the WiFi co-transmitting host are given to the mute data, for example, microphones 1 to 10 arranged on the synchronous audio queue all send UDP audio data packets containing PCM audio data to the WiFi co-transmitting host, channel codes corresponding to microphones 1 to 10 are given to the PCM audio data, and the channel codes and microphones on the synchronous audio queue may be set to be the same, that channel codes arranged on microphone 1 are set to be 1, and other channel codes in an equal difference sequence, a reverse sequence or other self-defined channel codes may also be set in advance. At this time, the microphones 11 to 16 do not send UDP audio packets containing PCM audio data to the WiFi simultaneous transmission host, and then perform zero padding operation, generate mute data in 6 channels, and assign corresponding channel codes to the microphones 11 to 16 to corresponding mute data, respectively.
S213: compressing PCM audio data into compressed audio packets through an SBC algorithm, forming UDP multicast packets, and executing S22;
specifically, when the number of simultaneous interpretation acquisition terminals in the synchronous audio queue is equal to 16, SBC algorithm compression of multiple channels of audio is performed on 16 channels of PCM audio data, and then the compressed audio data is packed into a UDP multicast packet, where the UDP multicast packet includes 16 channels of audio data, and each channel of audio data has a channel code.
S214: compressing PCM audio data and mute data into a compressed audio packet through an SBC algorithm, forming a UDP multicast packet, and executing S22;
specifically, when the number of simultaneous interpretation acquisition terminals in the synchronous audio queue is less than 16, multiple channels of SBC algorithm compression are performed on multiple channels of PCM audio data and multiple channels of mute data, and the compressed audio data are packed into a UDP multicast packet, where the UDP multicast packet includes multiple channels of audio data and multiple channels of mute data, and each channel of audio data and mute data corresponds to a channel code.
S22: and driving the WiFi simultaneous transmission host to forward the UDP multicast packet to the target area through the wireless AP.
Specifically, the WiFi simultaneous transmission host forwards the UDP multicast packet to the target area through the wireless AP, so that the WiFi simultaneous transmission receiving terminal in the target area can search for the corresponding UDP multicast packet.
S3: and driving the WiFi simultaneous transmission receiving terminal to acquire an external channel selection instruction so as to acquire a compressed audio packet corresponding to the channel selection instruction.
Specifically, the participant inputs a channel selection instruction to the WiFi simultaneous transmission receiving terminal through an input device (a mouse, a keyboard, or a button disposed on the audio output terminal) to obtain a compressed audio packet corresponding to the channel selection instruction, so as to listen to a corresponding audio, preferably, the channel selection instruction includes a channel code, and in this embodiment, the step S3 is specifically implemented by the following steps:
s31: driving the WiFi simultaneous transmission receiving terminal to obtain an external channel selection instruction;
specifically, the participant inputs a channel selection instruction to the WiFi simultaneous transmission receiving terminal through an input device (a mouse, a keyboard, or a button disposed on the audio output terminal), where the channel selection instruction may be notified to the participant in advance by a host or a corresponding rule of the participant, and the participant inputs the channel selection instruction by himself or a worker inputs the channel selection instruction in advance.
S32: carrying out signal search through a WiFi simultaneous transmission receiving terminal, and periodically switching channels to monitor so as to obtain channel codes;
specifically, the WiFi simultaneous transmission receiving terminal searches for signals in the area where the WiFi simultaneous transmission receiving terminal is located, and periodically switches channels to monitor, so as to obtain channel codes in the UDP multicast packet sent by the wireless AP, and simultaneously optimize the WiFi mode of the WiFi simultaneous transmission receiving terminal.
S33: judging whether the channel codes in the UDP multicast packet correspond to the channel selection instruction, if so, executing S34, otherwise, executing S32;
specifically, the channel code obtained by monitoring is compared with the channel code included in the channel selection instruction, if the channel code in the UDP multicast packet corresponds to the channel code in the channel selection instruction input by the participant, it indicates that there is an audio that the participant wants to listen to in the UDP multicast packet, S34 is executed, and if there is no correspondence, S32 is continuously executed until the channel code corresponding to the channel code in the channel selection instruction input by the participant is searched.
S34: and driving the WiFi simultaneous transmission receiving terminal to stop signal search, and outputting one of PCM audio data and mute data in the UDP multicast packet to the audio output terminal.
Specifically, the WiFi co-transmission receiving terminal stops signal search and enters a normal audio monitoring state, when the participant inputs a channel selection instruction again, the participant preferentially monitors whether a channel code in a UDP multicast packet received before the WiFi co-transmission receiving terminal obtains the channel selection instruction corresponds to a channel code in the channel selection instruction input by the participant, and preferably, the received UDP multicast packet is analyzed and decompressed to obtain PCM audio data or mute data, and the PCM audio data or mute data is subjected to digital-to-analog conversion by a DAC and is transmitted to an audio output terminal for the user to listen.
Example two:
a WiFi-based wireless simultaneous interpretation server comprising a memory and a processor;
a memory for storing program instructions;
a processor for executing the program instructions to perform the WiFi-based wireless simultaneous interpretation method according to the first embodiment.
Example three:
a wireless simultaneous interpretation system based on WiFi comprises a plurality of simultaneous interpretation acquisition terminals, a WiFi simultaneous interpretation host, a wireless AP, a WiFi simultaneous interpretation receiving terminal, an audio output terminal and a wireless simultaneous interpretation server based on WiFi as described in the second embodiment, wherein the simultaneous interpretation acquisition terminals, the WiFi simultaneous interpretation host, the wireless AP, the WiFi simultaneous interpretation receiving terminal and the audio output terminal are all connected with the wireless simultaneous interpretation server based on WiFi, the simultaneous interpretation acquisition terminals are connected to the WiFi simultaneous interpretation host in a network hand-pulling mode, the WiFi simultaneous interpretation host is connected with the input end of the WiFi simultaneous interpretation receiving terminal through the wireless AP, and the output end of the WiFi simultaneous interpretation receiving terminal is connected with the audio output terminal.
Various other modifications and changes may occur to those skilled in the art based on the foregoing teachings and concepts, and all such modifications and changes are intended to be included within the scope of the appended claims.
Claims (4)
1. A WiFi-based wireless simultaneous interpretation method is characterized by comprising the following steps:
s1: the method comprises the steps that a plurality of simultaneous interpretation acquisition terminals interact with a WiFi simultaneous interpretation host to drive the WiFi simultaneous interpretation host to distribute channel codes to the simultaneous interpretation acquisition terminals, external voice signals are acquired in real time through the simultaneous interpretation acquisition terminals to generate audio data, and the audio data are sent to the WiFi simultaneous interpretation host through a wired network;
s2: the WiFi simultaneous transmission host is driven to endow the audio data with channel codes corresponding to the simultaneous interpretation acquisition terminals, the audio data sent by the multiple simultaneous interpretation acquisition terminals are compressed into a compressed audio packet, and the compressed audio packet is forwarded to a target area through the wireless AP;
s3: the WiFi simultaneous transmission receiving terminal is driven to obtain an external channel selection instruction so as to obtain a compressed audio packet corresponding to the channel selection instruction;
the simultaneous interpretation acquisition terminal is connected to the WiFi simultaneous interpretation host computer in a network hand-in-hand mode;
the S1 is specifically realized by the following steps:
s11: interacting with a WiFi simultaneous interpretation acquisition terminal through a plurality of simultaneous interpretation acquisition terminals, driving the WiFi simultaneous interpretation acquisition terminal to distribute channel codes to the simultaneous interpretation acquisition terminal, and storing the simultaneous interpretation acquisition terminal into a simultaneous transmission audio queue;
s12: acquiring external voice signals in real time through a plurality of simultaneous interpretation acquisition terminals;
s13: driving the simultaneous interpretation acquisition terminal to convert the voice signal into PCM audio data;
s14: driving the simultaneous interpretation acquisition terminal to pack the PCM audio data into UDP audio data packets, and sending the UDP audio data packets to the WiFi simultaneous transmission host through the Ethernet interface;
the channel selection instruction comprises a channel code;
the step S2 is specifically realized by the following steps:
s21: the UDP audio data packet is analyzed into PCM audio data through the WiFi synchronous transmission host, the PCM audio data and the channel codes corresponding to the synchronous interpretation acquisition terminals are given, the PCM audio data are compressed into a compressed audio packet through an SBC algorithm, and a UDP multicast packet is formed;
s22: the WiFi simultaneous transmission host is driven to forward the UDP multicast packets to the target area through the wireless AP, so that the WiFi simultaneous transmission receiving terminal in the target area can search the corresponding UDP multicast packets;
the step S3 is specifically realized by the following steps:
s31: driving the WiFi simultaneous transmission receiving terminal to obtain an external channel selection instruction;
s32: carrying out signal search through a WiFi simultaneous transmission receiving terminal, and periodically switching channels to monitor so as to obtain channel codes;
s33: judging whether the channel codes in the UDP multicast packet correspond to the channel selection instruction, if so, executing S34, otherwise, executing S32;
s34: and the WiFi simultaneous transmission receiving terminal stops signal searching and outputs one of PCM audio data and mute data in the UDP multicast packet to the audio output terminal.
2. The WiFi-based wireless simultaneous interpretation method of claim 1, wherein the S21 is specifically implemented by the following steps:
s211: analyzing the UDP audio data packet into PCM audio data through the WiFi synchronous transmission host, and giving the PCM audio data and a channel code corresponding to the synchronous interpretation acquisition terminal;
s212: judging whether the quantity of the current PCM audio data reaches a preset value, if so, executing S213, otherwise, performing zero padding operation to generate mute data, endowing channel codes of simultaneous interpretation acquisition terminals which do not send the PCM audio data to the WiFi simultaneous transmission host computer with the mute data, and executing S214;
s213: compressing PCM audio data into compressed audio packets through an SBC algorithm, forming UDP multicast packets, and executing S22;
s214: the PCM audio data and the mute data are compressed into compressed audio packets by the SBC algorithm and constitute UDP multicast packets, and S22 is performed.
3. A wireless simultaneous interpretation server based on WiFi is characterized in that: comprises a storage and a processor;
a memory for storing program instructions;
a processor for executing the program instructions to perform the WiFi-based wireless simultaneous interpretation method of any of claims 1-2.
4. A wireless simultaneous interpretation system based on WiFi is characterized in that: the simultaneous interpretation system comprises a plurality of simultaneous interpretation acquisition terminals, a WiFi simultaneous interpretation host, a wireless AP (access point), a WiFi simultaneous transmission receiving terminal, an audio output terminal and the WiFi-based wireless simultaneous interpretation server according to claim 3, wherein the simultaneous interpretation acquisition terminals, the WiFi simultaneous transmission host, the wireless AP, the WiFi simultaneous transmission receiving terminal and the audio output terminal are all connected with the WiFi-based wireless simultaneous interpretation server, the simultaneous interpretation acquisition terminals are connected to the WiFi simultaneous transmission host in a network hand-pulling mode, the WiFi simultaneous transmission host is connected with the input end of the WiFi simultaneous transmission receiving terminal through the wireless AP, and the output end of the WiFi simultaneous transmission receiving terminal is connected with the audio output terminal.
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