Digital conference system with wired and wireless hybrid transmission and use method

Abstract

The invention relates to the technical field of conference processing, in particular to a wired and wireless hybrid transmission digital conference system and a use method. The system transmits corresponding first audio signals and corresponding second audio signals through a plurality of conference units; the transmission processing unit is used for switching the transmission mode of the conference unit to receive the corresponding first audio signal or the second audio signal; the statistical unit counts the switching duration of each conference unit in the transmission mode switching process; the analysis unit judges whether the switching of the transmission mode of the single conference unit in the conference process is qualified or not based on the switching duration, judges whether the switching of the transmission mode of the single conference unit in the conference process is qualified or not according to the switched single audio signal, or determines a reason, generates an instruction based on the reason, and sends the instruction to the single conference unit; and the control unit adjusts the parameters of the corresponding units or sends out corresponding notifications based on the instructions, so that the switching time in the conference process is shortened, and the conference efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of conference processing, and particularly to a digital conference system with hybrid wired and wireless transmission and a usage method thereof. Background Art

[0002] Most of the digital conference systems on the market currently only support a single transmission mode or rely on manual switching, and cannot achieve intelligent, low-latency, and highly secure wired / wireless dynamic switching. Therefore, there is an urgent need for an adaptive switching technology that can seamlessly transition between different transmission modes while ensuring the stability and security of conference data.

[0003] Chinese Patent Application Publication No.: CN115396069A provides an audio processing method and system for a wired and wireless networking conference system. This technical solution detects the power-on signal of the audio acquisition device unit and determines the type of power supply signal. If the power supply signal is a network cable power supply signal and it is in a power supply signal switching state, then a wired-to-wireless switching configuration is performed on the wired networking module and the wireless networking module. If the power supply signal is a battery power supply signal and it is in a power supply signal switching state, then the connection of the wired networking module is disconnected and the initialization configuration of the wireless networking module is started; a wired sound card request is sent to the wired audio output module or a wireless sound card request is sent to the wireless audio output module, so that the wired or wireless audio output module receives the audio of the audio sound card for processing and output. Thus, through the control of digital signals, when switching between wired networking and wireless networking, the output quality of the audio can be improved. However, this technical solution only involves achieving bidirectional switching between wired transmission and wireless transmission in a conference system through the control of digital signals to improve the audio output quality, without statistically analyzing the duration used in the switching process and determining whether the switching is qualified based on this, so that the switching efficiency of the transmission method during the conference cannot be guaranteed, resulting in low conference efficiency. Summary of the Invention

[0004] Therefore, the present invention provides a digital conference system with hybrid wired and wireless transmission and a usage method thereof to overcome the problem in the prior art that there is no determination of whether the switching of the transmission method during the conference is qualified based on the switching duration and adjustment of the corresponding units, which leads to low conference efficiency.

[0005] To achieve the above object, the present invention provides a digital conference system with hybrid wired and wireless transmission, including: A plurality of conference units, each of which is used to transmit a first audio signal collected by a wired method or a second audio signal collected by a wireless method under the corresponding transmission mode, wherein the transmission mode includes wired transmission and wireless transmission; A number of transmission processing units, each transmission processing unit is respectively connected to the corresponding conference unit, and is used to switch the transmission mode of the conference unit to receive the first audio signal or the second audio signal; A statistical unit, which is respectively connected to each of the transmission processing units and each of the conference units, and is used to count the switching duration of each conference unit when switching the transmission mode, where the switching duration is the time from when the transmission processing unit executes the transmission mode switching operation to when the conference unit completes the transmission mode switching; An analysis unit, which is connected to the statistical unit, and is used to determine whether the switching of the transmission mode of a single conference unit during the meeting is qualified based on the obtained switching duration, and, based on the determination result, determine whether to re-determine the qualification of the switching according to the single audio signal after switching, or determine the reason for the unqualified switching according to the switching duration, so as to generate an instruction based on the reason, and the instruction is to determine the data transmission volume in the conference unit, or the single switching ratio of the transmission processing unit during a single switching, or the number of relay devices used by the conference unit on the transmission route; A control unit, which is respectively connected to the analysis unit, a number of the conference units and a number of the transmission processing units, and is used to adjust the data transmission volume, or adjust the single switching ratio, or adjust the number of relay devices used based on the instruction.

[0006] Further, a switching decision unit is further included, which is respectively connected to each of the transmission processing units, and is used to monitor each of the first audio signals or each of the second audio signals to determine whether to issue a decision instruction to switch the transmission mode of an abnormal conference unit, and the transmission processing unit is used to perform a switching process on the transmission mode of the abnormal conference unit based on the decision instruction; Wherein, the conference unit corresponding to the first audio signal or the second audio signal whose monitored total harmonic distortion exceeds the threshold is recorded as the abnormal conference unit.

[0007] Further, the analysis unit is further used to determine whether the switching of the transmission mode of a single conference unit is qualified based on the comparison result between the switching duration and the preset switching duration, and, based on the determination result, obtain the single audio signal after switching and calculate the corresponding audio signal-to-noise ratio to re-determine whether the switching is qualified, where the audio signal is the first audio signal or the second audio signal; The analysis unit is further used to determine the reason for the unqualified situation based on the difference between the switching duration and the preset switching duration when it is determined that the switching of the transmission mode of a single conference unit during the meeting is unqualified.

[0008] Further, the analysis unit is further configured to determine whether to increase the number of relay devices used by the conference unit on the transmission route or reduce the data transmission volume of the conference unit per unit time based on the comparison result between the audio signal-to-noise ratio and the critical audio signal-to-noise ratio; Wherein, in the case of determining to switch from wireless transmission to wired transmission, it is determined whether to increase the number of relay devices used; in the case of determining to switch from wired transmission to wireless transmission, it is determined whether to reduce the data transmission volume.

[0009] Further, the analysis unit is further configured to generate a corresponding instruction based on the comparison result between the signal-to-noise ratio difference and the preset signal-to-noise ratio difference to determine to increase the number of relay devices used, and the increase amplitude is positively correlated with the signal-to-noise ratio difference; The control unit is further configured to send a notice to increase the number of relay devices used based on the instruction; Wherein, the signal-to-noise ratio difference is the difference between the critical audio signal-to-noise ratio and the audio signal-to-noise ratio.

[0010] Further, the analysis unit is further configured to generate a corresponding instruction based on the comparison result between the signal-to-noise ratio difference and the preset signal-to-noise ratio difference to determine to reduce the data transmission volume, and the reduction amplitude is positively correlated with the signal-to-noise ratio difference; The control unit is further configured to control the conference unit to reduce the data transmission volume based on the instruction; Wherein, the signal-to-noise ratio difference is the difference between the critical audio signal-to-noise ratio and the audio signal-to-noise ratio.

[0011] Further, the analysis unit is further configured to determine the reason for the unqualified switching of the transmission mode of a single conference unit during the conference based on the comparison result between the duration difference and the preset duration difference; The analysis unit is further configured to generate a corresponding instruction based on the reason to determine to send a notice that there is a problem with the current network environment, or is further configured to re-determine the corresponding processing based on the number of conference units statistically switched at one time; The control unit is further configured to send a notice that there is a problem with the current network environment based on the instruction; Wherein, the duration difference is the difference between the switching duration and the preset switching duration.

[0012] Further, the analysis unit is further configured to re-determine the reason for the unqualified switching of the transmission mode of a single conference unit during the conference based on the comparison result between the switching number and the preset switching number; The analysis unit is further configured to generate a corresponding instruction based on the reason to determine to send a notice that there is a problem with the conference unit to be switched, or reduce the single switching ratio; The control unit is further configured to issue a notice that there is a problem with the conference unit to be switched based on the instruction, or reduce the single-switch ratio; Wherein, the number of switches is the number of conference units for a single switch counted by the statistics unit, and the single-switch ratio is the ratio between the number of conference units for a single switch and the total number of conference units to be switched.

[0013] Furthermore, the analysis unit is further configured to generate a corresponding instruction based on the comparison result between the quantity difference and a preset quantity difference to determine to reduce the single-switch ratio, and the reduction amplitude is positively correlated with the quantity difference; The control unit controls the transmission processing unit to reduce the single-switch ratio based on the instruction; Wherein, the quantity difference is the difference between the number of switches and the preset number of switches.

[0014] The present invention also provides a usage method of a digital conference system with hybrid wired and wireless transmission, including: Transmitting a first audio signal collected by a wired method or a second audio signal collected by a wireless method through a plurality of conference units respectively under corresponding transmission modes; Each transmission processing unit respectively connected to the corresponding conference unit switches the transmission mode of the conference unit to receive the first audio signal or the second audio signal, wherein the transmission modes include wired transmission and wireless transmission; A statistics unit respectively connected to each of the transmission processing units and each of the conference units statistics the switching duration of each conference unit when switching the transmission mode, wherein the switching duration is the time used from when the transmission processing unit executes the transmission mode switching operation to when the conference unit completes the transmission mode switching; An analysis unit connected to the statistics unit determines whether the switching of the transmission mode of a single conference unit during the conference is qualified based on the obtained switching duration, and based on the determination result, determines to re-determine whether the switching is qualified according to the single audio signal after switching, or determines the reason for the unqualified switching according to the switching duration, so as to generate an instruction based on the reason, and the instruction is to determine the data transmission volume in the conference unit, or the single-switch ratio of the transmission processing unit during a single switch, or the number of relay devices used by the conference unit on the transmission route; A control unit respectively connected to the analysis unit, a plurality of the conference units and a plurality of the transmission processing units determines to adjust the data transmission volume, or adjust the single-switch ratio, or adjust the number of relay devices used based on the instruction.

[0015] Compared with the prior art, the beneficial effects of a digital conference system with hybrid wired and wireless transmission according to the present invention are as follows: the system transmits corresponding first audio signals and corresponding second audio signals through a plurality of conference units; the transmission processing unit is used to switch the transmission mode of the conference units to receive the first audio signal or the second audio signal; the statistical unit counts the switching duration of each conference unit during the switching of the transmission mode; the analysis unit determines whether the switching of the transmission mode of a single conference unit during the conference is qualified based on the switching duration, and, based on the determination result, determines whether to re-determine the qualification of the switching according to the switched single audio signal, or determines the reason for the unqualified switching according to the switching duration, and generates an instruction based on the reason. The instruction includes re-determining the data transmission amount in the conference unit, or re-determining the single switching ratio of the transmission processing unit during a single switching, or re-determining the number of relay devices used by the conference unit on the transmission route; the control unit adjusts the parameters of the corresponding unit or issues a corresponding notice based on the instruction, thereby reducing the time used for switching the transmission mode during the conference, and thus improving the conference efficiency during the switching between wired transmission and wireless transmission.

[0016] Further, when the present invention determines the switching of the transmission mode during the conference according to the switching duration and the preset switching duration, it further determines whether the switching is qualified by comparing the obtained audio signal-to-noise ratio with the preset audio signal-to-noise ratio, thereby improving the determination accuracy of the switching process and reducing the occurrence of error situations.

[0017] Further, when the present invention switches from wired transmission to wireless transmission, it can determine that it is necessary to reduce the data transmission amount of the wireless conference unit within the unit time by comparing the corresponding audio signal-to-noise ratio with the preset audio signal-to-noise ratio. At this time, it further determines the reduction amplitude of the data transmission amount based on the comparison result of the corresponding signal-to-noise ratio difference and the preset signal-to-noise ratio difference, thereby reducing the corresponding switching duration and thus improving the conference efficiency.

[0018] Further, when the present invention switches from wireless transmission to wired transmission, it can determine that it is necessary to increase the relay devices on the transmission route where the conference unit is located by comparing the corresponding audio signal-to-noise ratio with the preset audio signal-to-noise ratio. At this time, it further determines the increase amplitude of the relay devices based on the comparison result of the corresponding signal-to-noise ratio difference and the preset signal-to-noise ratio difference, thereby reducing the corresponding switching duration and thus improving the conference efficiency.

[0019] Further, the present invention is also used to determine the reason for the unqualified switching of the transmission mode during the conference according to the comparison result of the corresponding duration difference and the preset duration difference, and determine the corresponding processing, including: issuing a notice that there is a problem with the network environment, and re-obtaining the number of units currently being switched and re-determining, so that the problem of unqualified switching process can be solved targeted.

[0020] Furthermore, the present invention is also used to re-determine the reason for non-conformance and corresponding processing based on the comparison result between the corresponding number of handovers and the preset number of handovers during the current handover process, including: issuing a notice that there is a problem with the conference unit to be handed over, and determining to adjust the handover ratio during a single handover, so as to solve the problem of non-conforming handovers.

[0021] Furthermore, when the present invention determines to adjust the single handover ratio, it can also determine the adjustment range of the corresponding single handover ratio based on the comparison result between the corresponding quantity difference and the preset quantity difference, so as to solve the problem of non-conforming handovers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the modules of the digital conference system with hybrid wired and wireless transmission according to the present invention; Figure 2 It is a schematic flowchart of the usage method of the digital conference system with hybrid wired and wireless transmission according to the present invention; Figure 3 It is a logical decision diagram for determining whether the handover process of switching from wired transmission to wireless transmission during a conference is qualified and corresponding processing based on the wired handover duration according to the present invention; Figure 4 It is a logical decision diagram for determining the reason for non-conformance of the handover process of switching from wired transmission to wireless transmission and corresponding processing based on the wired duration difference according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the objectives and advantages of the present invention clearer and more understandable, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and do not limit the protection scope of the present invention.

[0025] It should be noted that in the description of the present invention, unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to specific situations.

[0026] In this embodiment, the system has two ways to transmit audio signals, namely wired transmission and wireless transmission. For example, when the total harmonic distortion of the first audio signal is detected to be 0.3%, the wired transmission is switched to wireless transmission; or when the total harmonic distortion of the second audio signal is detected to be 0.6%, the wireless transmission is switched to wired transmission; or when transmitting audio signals via wireless transmission, if a large number of interference sources suddenly appear, causing a failure in the wireless transmission process and thus rendering the wireless transmission process ineffective, at this time, the wireless transmission is selected to be switched to wired transmission to ensure that the meeting will not be suddenly interrupted, ensuring that the main participants can continue the meeting normally and improving the meeting efficiency; or when in free discussion, the meeting unit uses wireless transmission, and when entering the voting session, it is switched to wired transmission to ensure zero packet loss of voting data. When encountering the aforementioned scenarios during the meeting, the system in this embodiment can perform two-way switching between wired transmission and wireless transmission, thereby ensuring the meeting efficiency.

[0027] Please refer to Figure 1 As shown, it is a schematic diagram of the modules of the digital conference system with hybrid wired and wireless transmission in this embodiment. It includes several meeting units, several transmission processing units, a switching decision unit, a statistical unit, an analysis unit, and a control unit. The several meeting units are respectively used to transmit the first audio signal collected by wired means or the second audio signal collected by wireless means under the corresponding transmission mode, where the transmission mode includes wired transmission and wireless transmission; each of the transmission processing units is respectively connected to the corresponding meeting unit and is used to switch the transmission mode of the meeting unit to receive the first audio signal or the second audio signal, including performing two-way switching between the wired transmission mode and the wireless transmission mode for each meeting unit; the statistical unit is respectively connected to each of the transmission processing units and each of the meeting units and is used to count the switching duration of each meeting unit when switching the transmission mode, where the switching duration is the time used from when the transmission processing unit executes the transmission mode switching operation to when the meeting unit completes the transmission mode switching; the analysis unit is connected to the statistical unit and is used to determine whether the switching of the transmission mode of a single meeting unit during the meeting is qualified based on the obtained switching duration, and, based on the determination result, determine whether to re-determine the qualification of the switching according to the switched single audio signal, or determine the reason for the unqualified switching according to the switching duration, so as to generate an instruction based on the reason, and the instruction is to determine the data transmission volume in the meeting unit, or the single switching ratio when the transmission processing unit performs a single switching, or the number of relay devices used by the meeting unit on the transmission route; the control unit, which is respectively connected to the analysis unit, several meeting units, and several transmission processing units, is used to determine and adjust the data transmission volume, or adjust the single switching ratio, or adjust the number of relay devices used based on the instruction.

[0028] Specifically, in this embodiment, the transmission modes of the conference unit include wired transmission and wireless transmission. When wired transmission is used, the first audio signal can be collected and transmitted. When wireless transmission is used, the second audio signal can be collected and transmitted. Both the collected first audio signal and the second audio signal can be input into the corresponding transmission processing unit. After determining the corresponding transmission mode, the transmission processing unit directly receives the corresponding audio signal. The two-way switching of the transmission mode means that it can be switched from wired transmission to wireless transmission, and from wireless transmission to wired transmission. When switched to wired transmission, the first audio signal is received by the transmission processing unit. When switched to wireless transmission, the second audio signal is received by the transmission processing unit. When the switching decision unit determines whether to switch the transmission mode, it can decide whether to switch by monitoring whether there are any faults in the wired transmission or wireless transmission process in the conference unit. For example, when it is detected that the wired transmission of the conference unit fails and the audio signal cannot be transmitted, while the wireless transmission can operate normally, the wired transmission can be switched to wireless transmission; it can also switch the transmission mode of the conference unit when receiving an instruction from the conference initiator, etc. The statistical unit counts the duration used for the transmission processing unit to receive the corresponding audio signal during the switching operation, and records this duration as the switching duration. Each conference unit has a corresponding switching duration during the actual switching process. The analysis unit determines whether the switching of the transmission mode during the current conference process is qualified based on the obtained switching duration. At this time, the determination is made for a single switching process. When the determination is qualified, no intervention is made. When the determination is unqualified, the corresponding reason needs to be determined. Here, the switching duration is divided into two types. One is the time used by a single unit when switching from wired transmission to wireless transmission, and the other is the time used by a single unit when switching from wireless transmission to wired transmission. The values of the two are different, so the corresponding determination criteria are also different; then the analysis unit generates corresponding instructions based on the reason, and the control unit adjusts the corresponding parameters in the system or issues corresponding notifications to shorten the switching duration, thereby improving the efficiency of the system when switching between wired and wireless, and thus improving the conference efficiency.

[0029] Please refer to Figure 2 As shown, it is a schematic flowchart of the usage method of the digital conference system applied to wired and wireless hybrid transmission in this embodiment. The usage method includes at least the following steps: S1: Transmit the first audio signal collected by the wired method or the second audio signal collected by the wireless method through several conference units respectively under the corresponding transmission modes; S2: The respective transmission processing units connected to the corresponding conference units switch the transmission modes of the conference units to receive the first audio signal or the second audio signal, where the transmission modes include wired transmission and wireless transmission; S3: The statistical unit connected to each transmission processing unit and each conference unit respectively counts the switching duration of each conference unit when switching the transmission mode, where the switching duration is the time from when the transmission processing unit performs the transmission mode switching operation to when the conference unit completes the transmission mode switching; S4: The analysis unit connected to the statistical unit determines whether the switching of the transmission mode of a single conference unit during the conference is qualified based on the obtained switching duration, and based on the determination result, determines whether to re-determine the qualification of the switching according to the switched single audio signal, or determines the reason for the unqualified switching according to the switching duration; generates an instruction based on the reason, and the instruction is to determine the data transmission volume in the conference unit, determine the single switching ratio when the transmission processing unit performs a single switching, or determine the number of relay devices used by the conference unit on the transmission route; S5: The control unit connected to the analysis unit, several conference units, and several transmission processing units respectively determines to adjust the data transmission volume, or adjust the single switching ratio, or adjust the number of relay devices used based on the instruction.

[0030] Furthermore, the system further includes a switching decision unit, which is respectively connected to each of the transmission processing units, and is used to monitor each of the first audio signals or each of the second audio signals to determine whether to issue a decision instruction to switch the transmission mode of an abnormal conference unit, and the transmission processing unit is used to perform a switching process on the transmission mode of the abnormal conference unit based on the decision instruction; among them, the conference unit corresponding to the monitored first audio signal or second audio signal with total harmonic distortion exceeding the threshold is recorded as the abnormal conference unit. In this embodiment, when wirelessly transmitting, the corresponding threshold can be set to 0.4%, and when wirely transmitting, the corresponding threshold can be set to 0.2%. The selection of this threshold is determined by analyzing the harmonic components of the audio signal, but this value is not limited thereto, and those skilled in the art can adjust this threshold according to the audio signal components in different conference processes.

[0031] Furthermore, the analysis unit is further used to select a corresponding determination criterion according to the determined switching transmission mode, where the determination criterion includes different preset parameters.

[0032] Specifically, in this embodiment, when switching from wireline transmission to wireless transmission and when switching from wireless transmission to wireline transmission, the switching durations in the two switching modes are different, and the subsequent corresponding device parameter adjustments and preset parameters are also different. Therefore, it is necessary to determine and select the corresponding determination criterion according to different switching transmission modes. The preset parameters include preset switching duration, critical audio signal-to-noise ratio, preset signal-to-noise ratio difference, preset duration difference, preset switching quantity, and preset quantity difference, and the determination criterion has different setting standards under different switching transmission modes.

[0033] Please refer to Figure 3 as shown, which is a logical decision diagram for determining whether the handover process of switching from wired transmission to wireless transmission during a meeting is qualified and the corresponding processing based on the wired handover duration in this embodiment. The analysis unit is further configured to determine whether the handover of the transmission mode of a single meeting unit is qualified based on the comparison result between the handover duration and a preset handover duration, and, based on the determination result, obtain the switched single audio signal, calculate the corresponding audio signal-to-noise ratio thereof, and re-determine whether the handover is qualified, where the audio signal is the first audio signal or the second audio signal; the analysis unit is further configured to, when it is determined that the handover of the transmission mode of a single meeting unit during the meeting is unqualified, determine the reason for the unqualified based on the difference between the handover duration and the preset handover duration.

[0034] Specifically, in this embodiment, the meeting unit is connected to the transmission processing unit in a star topology. The handover duration H can be divided into a wired handover duration H1 corresponding to switching from wired transmission to wireless transmission and a wireless handover duration H2 corresponding to switching from wireless transmission to wired transmission. The analysis unit makes a comparison determination based on different handover durations H and the corresponding preset handover durations H0, where the preset handover duration H0 can be divided into a wired preset handover duration H01 corresponding to H1 and a wireless preset handover duration H02 corresponding to H2; if a fault occurs in the wired transmission mode in the meeting unit, the wired preset handover duration H01 at this time is the duration standard for switching from the corresponding wired transmission to wireless transmission; if a fault occurs in the wireless transmission mode in the meeting unit, the wireless preset handover duration H02 at this time is the duration standard for switching from the corresponding wireless transmission to wired transmission.

[0035] In this embodiment, by analyzing the collected historical data, by statistically analyzing the central tendency (such as mean, median) and dispersion tendency (such as standard deviation, interquartile range) of the historical data, etc., and combining statistical methods and meeting usage scenarios, the corresponding preset or critical parameter values are determined. In order to more accurately determine the handover process and refine the relevant parameters during the adjustment process, the wired preset handover duration H01 for switching from wired transmission to wireless transmission can be divided into a first wired preset handover duration H11 and a second wired preset handover duration H21. The subsequent division of other corresponding first preset parameters and second preset parameters is for the same reason. Set H11 = 180ms, H21 = 210ms. The specific process of comparing H1 with H11 and H21 is as follows: If H1 is less than or equal to H11, it indicates that the switching duration during the current process of switching from the wired transmission mode to the wireless transmission mode is relatively short, meeting the standard for determining a qualified switch in the historical data. Therefore, it can be determined that the switch for a single conference unit during the current meeting process is qualified. If H1 is greater than H11 and less than or equal to H21, based on the current H1 alone, it is impossible to specifically determine whether the transmission mode switch of a single conference unit during the meeting process is qualified. At this time, the second audio signal after the switch can be obtained, and the corresponding wireless audio signal-to-noise ratio can be calculated. By introducing the new parameter of the wireless audio signal-to-noise ratio for comprehensive judgment, relying on a single indicator is avoided to improve the accuracy of the determination process. If H1 is greater than H21, it indicates that the switching duration during the current process of switching from the wired transmission mode to the wireless transmission mode is relatively long, meeting the standard for determining an unqualified switch in the historical data. At this time, it is directly determined that the switch is unqualified, and the reason can be determined according to the difference between H1 and H01. More specifically, the difference between H1 and H21 is calculated and the reason is determined based on this.

[0036] The wireless preset switching duration H02 when switching from wireless transmission to wired transmission can be divided into the first wireless preset switching duration H12 and the second wireless preset switching duration H22. Set H12 = 295ms and H22 = 325ms. The specific process of comparing H2 with H12 and H22 is as follows: If H2 is less than or equal to H12, it indicates that the switching duration during the current process of switching from the wireless transmission mode to the wired transmission mode is relatively short, meeting the standard for determining a qualified switch in the historical data. Therefore, it is directly determined that the switch is qualified. If H2 is greater than H12 and less than or equal to H22, based on the current H2 alone, it is impossible to specifically determine whether the transmission mode switch of a single conference unit during the meeting process is qualified. At this time, the first audio signal after the switch can be obtained, and the corresponding wired audio signal-to-noise ratio can be calculated. By introducing the new parameter of the wired audio signal-to-noise ratio for comprehensive judgment, relying on a single indicator is avoided to improve the accuracy of the determination process. If H2 is greater than H22, it indicates that the current switching duration is quite long, meeting the standard for determining an unqualified switch in the historical data. At this time, it is directly determined that the switch is unqualified, and the reason can be directly determined by calculating the difference between H2 and H22.

[0037] Furthermore, the analysis unit is also used to determine whether to increase the number of relay devices used by the conference unit on the transmission route or reduce the data transmission volume of the conference unit per unit time based on the comparison result between the audio signal-to-noise ratio and the critical audio signal-to-noise ratio; among them, in the case of determining to switch from wireless transmission to wired transmission, it is determined whether to increase the number of relay devices used; in the case of determining to switch from wired transmission to wireless transmission, it is determined whether to reduce the data transmission volume.

[0038] Specifically, in this embodiment, since the signal-to-noise ratio of the switched audio signal being lower than the preset value will cause the signal synchronization time to extend, and multiple attempts are required to re-establish a stable connection, thereby increasing the switching duration. Therefore, the audio signal-to-noise ratio can be judged to determine the corresponding processing. The audio signal-to-noise ratio F can be divided into a wired audio signal-to-noise ratio F1 and a wireless audio signal-to-noise ratio F2. Different audio signal-to-noise ratios F are selected according to the different switching transmission methods. The analysis unit determines the corresponding processing method based on the comparison result of different audio signal-to-noise ratios F and the corresponding critical audio signal-to-noise ratio F0. Among them, the critical audio signal-to-noise ratio F0 can be divided into a wired critical audio signal-to-noise ratio F01 and a wireless critical audio signal-to-noise ratio F02. The comparison process based on the audio signal-to-noise ratio F and the critical audio signal-to-noise ratio F0 is as follows: If F is less than F0, it indicates that the current F is unqualified, and the system needs to spend extra time on signal quality assessment, resulting in a corresponding increase in the switching duration H1 or H2. Therefore, the situation where H1 is greater than H11 and less than or equal to H21 or H2 is greater than H12 and less than or equal to H22 occurs. At this time, it can be determined that corresponding processing methods are used to improve the corresponding F. If F is greater than or equal to F0, it indicates that the current F is qualified and F will not have an impact during the direct switching process. Therefore, if the situation where H1 is greater than H11 and less than or equal to H21 or H2 is greater than H12 and less than or equal to H22 occurs, it can be directly determined that the switching of the transmission method during the conference switching process is unqualified, and the corresponding reason can be determined at this time.

[0039] Specifically, when the switching decision unit issues a decision instruction to switch from wired transmission to wireless transmission, the conference unit first stops collecting and transmitting the first audio signal according to the decision instruction, and then starts collecting and transmitting the second audio signal. The analysis unit obtains the corresponding wireless audio signal-to-noise ratio F2, and sets the wireless critical audio signal-to-noise ratio F02 = 70dB. The comparison process based on F2 and F02 is as follows: If F2 is less than F02, the analysis unit determines to reduce the data transmission volume of the conference unit per unit time. If F2 is greater than or equal to F02, it is determined that the switching process is unqualified, and the reason is determined based on the difference between H1 and H21.

[0040] When the switching decision unit issues a decision instruction to switch from wireless transmission to wired transmission, the conference unit first stops collecting and transmitting the second audio signal according to the decision instruction, and then starts collecting and transmitting the first audio signal. The analysis unit obtains the corresponding wired audio signal-to-noise ratio F1, and sets the wired critical audio signal-to-noise ratio F01 = 110dB. The comparison process based on F1 and F01 is as follows: If F1 is less than F01, the analysis unit determines the number of relay devices used by the conference unit on the transmission route. If F1 is greater than or equal to F01, the reason is determined through the difference between H2 and H22.

[0041] Furthermore, the analysis unit is further configured to generate corresponding instructions based on the comparison result between the signal-to-noise ratio difference and the preset signal-to-noise ratio difference to determine an increase in the number of relay devices used, and the increase amplitude is positively correlated with the signal-to-noise ratio difference; the control unit is further configured to issue a notice to increase the number of relay devices used based on the instructions; wherein, the signal-to-noise ratio difference is the difference between the critical audio signal-to-noise ratio and the audio signal-to-noise ratio.

[0042] Specifically, when it is determined that the wireless transmission is switched to the wired transmission, the corresponding wired critical audio signal-to-noise ratio F01 and the wired audio signal-to-noise ratio F1 are obtained, and the signal-to-noise ratio difference is calculated and marked as the wired signal-to-noise ratio difference K1. At this time, the preset signal-to-noise ratio difference can also be marked as the wired preset signal-to-noise ratio difference K01. The wired preset signal-to-noise ratio difference K01 can be divided into the first wired preset signal-to-noise ratio difference K11 and the second wired preset signal-to-noise ratio difference K21. Set K11 = 3dB and K21 = 5dB. The specific comparison process based on K1 with K11 and K21 is as follows: If K1 is less than or equal to K11, the analysis unit generates an instruction for the first relay device usage quantity adjustment coefficient, and the control unit issues a notice to increase the number of relay devices used based on this instruction, increasing by one more than the original quantity. If K1 is greater than K11 and less than or equal to K21, the analysis unit generates an instruction for the second relay device usage quantity adjustment coefficient, and the control unit issues a notice to increase the number of relay devices used based on this instruction, increasing by two more than the original quantity. If K1 is greater than K21, the analysis unit generates an instruction for the third relay device usage quantity adjustment coefficient, and the control unit issues a notice to increase the number of relay devices used, increasing by three more than the original quantity. Here, the relay device has a DSP processing function. It should be noted that the number of relay devices after the increase shall not exceed 4.

[0043] Furthermore, the analysis unit is further configured to generate corresponding instructions based on the comparison result between the signal-to-noise ratio difference and the preset signal-to-noise ratio difference to determine a decrease in the data transmission volume, and the decrease amplitude is positively correlated with the signal-to-noise ratio difference; the control unit is further configured to control the conference unit to reduce the data transmission volume based on the instructions; wherein, the signal-to-noise ratio difference is the difference between the critical audio signal-to-noise ratio and the audio signal-to-noise ratio.

[0044] Specifically, by reducing the data transmission volume, the signal bandwidth occupancy can be reduced through a compression algorithm, thereby reducing the probability of noise interference in the wireless channel, and further improving the wireless audio signal-to-noise ratio F2. When it is determined that the transmission is switched from wired to wireless, the corresponding wireless critical audio signal-to-noise ratio F02 and wireless audio signal-to-noise ratio F2 are obtained, and the signal-to-noise ratio difference is calculated and marked as the wireless signal-to-noise ratio difference K2. At this time, the preset signal-to-noise ratio difference can also be marked as the wireless preset signal-to-noise ratio difference K02. The wireless preset signal-to-noise ratio difference K02 can be divided into the first wireless preset signal-to-noise ratio difference K12 and the second wireless preset signal-to-noise ratio difference K22. Set K12 = 4dB and K22 = 6dB. The specific comparison process based on K2 with K12 and K22 is as follows: If K2 is less than or equal to K12, the analysis unit generates an instruction for the first data transmission volume adjustment coefficient, and the control unit controls the conference unit to reduce the data transmission volume based on this instruction, reducing it by 10% on the original basis. If K2 is greater than K12 and less than or equal to K22, the analysis unit generates an instruction for the second data transmission volume adjustment coefficient, and the control unit controls the conference unit to reduce the data transmission volume based on this instruction, reducing it by 15% on the original basis. If K2 is greater than K22, the analysis unit generates an instruction for the third data transmission volume adjustment coefficient, and the control unit controls the conference unit to reduce the data transmission volume based on this instruction, reducing it by 20% on the original basis. It should be clear that the reduction amplitude value of the data transmission volume can also be set to other values that meet the requirements, such as 18%, etc.

[0045] Please refer to Figure 4 As shown, it is a logical decision diagram for the reasons for the unqualified switching process from wired transmission to wireless transmission based on the wired duration difference in this embodiment and the corresponding processing. The analysis unit is also used to determine the reason for the unqualified switching of the transmission mode of a single conference unit during the conference based on the comparison result of the duration difference and the preset duration difference. The analysis unit is also used to generate a corresponding instruction based on the reason to determine to issue a notice that there is a problem with the current network environment, or is also used to re-determine the corresponding processing based on the number of the conference units statistically during a single switch. The control unit is also used to issue a notice that there is a problem with the current network environment based on the instruction. Among them, the duration difference is the difference between the switching duration and the preset switching duration.

[0046] Specifically, in this embodiment, the duration difference T is obtained based on the difference between the switching duration H and the preset switching duration H0. The specific comparison process based on the duration difference T and the preset duration difference T0 is as follows: If T is less than or equal to T0, at this time the control unit is connected to the statistical unit, and the control unit controls the statistical unit to count the number of corresponding conference units during this handover process. The analysis unit further determines the corresponding reasons and processing methods based on the obtained handover quantity. If T is greater than T0, it is determined at this time that there is a problem with the current network environment, resulting in a problem when the transmission processing unit receives the audio signal, thus causing the handover duration H to far exceed the preset handover duration H0. At this time, the control unit directly issues a notice that there is a problem with the network environment, and manual adjustment of the network environment is required.

[0047] If it is switched from wired transmission to wireless transmission, the duration difference T1 at this time should be the wired duration difference T1. T1 is the difference between the wired handover duration H1 and the second wired preset handover duration H21. The corresponding wired preset duration difference for T1 is T01, and T01 can be set to 15 ms. The specific process of comparing T1 with T01 is as follows: If T1 is less than or equal to T01, count the number of conference units during a single handover process. If T1 is greater than T01, issue a notice that there is a problem with the network environment.

[0048] If it is switched from wireless transmission to wired transmission, the duration difference T at this time should be the wireless duration difference T2. T2 is the difference between the wireless handover duration H2 and the second wireless preset handover duration H22. The corresponding wireless preset duration difference for T2 is T02, and T02 can be set to 20 ms. The specific process of comparing T2 with T02 is as follows: If T2 is less than or equal to T02, count the number of conference units during a single handover process; if T2 is greater than T02, issue a notice that there is a problem with the network environment.

[0049] Furthermore, the analysis unit is further configured to re-determine the reason for the unqualified handover of the transmission method of a single conference unit during the conference based on the comparison result between the handover quantity and the preset handover quantity; the analysis unit is further configured to generate a corresponding instruction based on the reason to determine to issue a notice that there is a problem with the conference unit to be handed over, or to reduce the single handover ratio; the control unit is further configured to issue a notice that there is a problem with the conference unit to be handed over, or to reduce the single handover ratio based on the instruction; wherein, the handover quantity is the number of conference units during a single handover counted by the statistical unit, and the single handover ratio is the ratio between the number of conference units for a single handover and the total number of conference units to be handed over.

[0050] Specifically, in this embodiment, the process of comparing the switching quantity C with the preset switching quantity C0 is as follows: If C is less than or equal to C0, it indicates that the current switching quantity is relatively small and the number of devices switched each time meets the requirements. At this time, if an unqualified situation occurs, it is determined that there is a problem with the corresponding conference unit to be switched, and the analysis unit generates an instruction indicating that there is a problem with the conference unit to be switched and issues a corresponding notice through the control unit for maintenance personnel to perform maintenance. If C is greater than C0, it indicates that the current switching quantity is quite large, and the number of devices switched by the unit exceeds the number of devices that can be loaded currently, thus resulting in an extended switching duration. Therefore, it is necessary to reduce the single-switching ratio and the number of conference units switched each time.

[0051] When switching from wired transmission to wireless transmission, the switching quantity C is more specifically the wired switching quantity C1, and the corresponding is the wired preset switching quantity C01. Set C01 = 20 units. The process of comparing C1 with C01 is as follows: If C1 is less than or equal to C01, a corresponding notice is issued through the control unit; if C1 is greater than C01, the single-switching ratio is reduced.

[0052] When switching from wireless transmission to wired transmission, the switching quantity C is more specifically the wireless switching quantity C2, and the corresponding wireless preset switching quantity C02. Set C02 = 30 units. The process of comparing C2 with C02 is as follows: If C2 is less than or equal to C02, a corresponding notice is issued through the control unit; if C2 is greater than C02, the single-switching ratio is reduced.

[0053] Furthermore, the analysis unit is also used to generate a corresponding instruction based on the comparison result of the quantity difference and the preset quantity difference to determine to reduce the single-switching ratio, and the reduction amplitude is positively correlated with the quantity difference; the control unit controls the transmission processing unit to reduce the single-switching ratio based on the instruction; wherein, the quantity difference is the difference between the switching quantity and the preset switching quantity.

[0054] Specifically, in this embodiment, the maximum single-switching ratio is 1, that is, the number of conference units switched each time is at most equal to the total number of conference units to be switched. The number of conference units switched each time can be reduced by reducing the single-switching ratio; when switching from wired transmission to wireless transmission, the quantity difference S at this time should be the wired quantity difference S1, and S1 is the difference between the wired switching quantity C1 and the wired preset switching quantity C01, and the corresponding is the wired preset quantity difference S01; when switching from wireless transmission to wireless transmission, the quantity difference S at this time should be the wireless quantity difference S2, and S2 is the difference between the wireless switching quantity C2 and the wireless preset switching quantity C02, and the corresponding is the wireless preset quantity difference S02.

[0055] S01 can be divided into a first wired preset quantity difference S11 and a second wired preset quantity difference S21. Set S11 = 4 units and S21 = 6 units. The specific comparison process based on S1 with S11 and S21 is as follows: If S1 is less than or equal to S11, the analysis unit generates an instruction for the first switching ratio adjustment coefficient, and the adjustment module controls the transmission processing unit to reduce the single switching ratio to 0.9 times the original value based on this instruction; if S1 is greater than S11 and less than or equal to S21, the analysis unit generates an instruction for the second switching ratio adjustment coefficient, and the adjustment module controls the transmission processing unit to reduce the single switching ratio to 0.7 times the original value based on this instruction; if S1 is greater than S21, the analysis unit generates an instruction for the third switching ratio adjustment coefficient, and the adjustment module controls the transmission processing unit to reduce the single switching ratio to 0.6 times the original value.

[0056] S02 can be divided into a first wireless preset quantity difference S12 and a second wireless preset quantity difference S22. Set S12 = 2 units and S22 = 5 units. The specific comparison process based on S2 with S12 and S22 is as follows: If S2 is less than or equal to S12, the analysis unit generates an instruction for the fourth switching ratio adjustment coefficient, and the adjustment module controls the transmission processing unit to reduce the single switching ratio to 0.8 times the original value based on this instruction; if S2 is greater than S12 and less than or equal to S22, the analysis unit generates an instruction for the fifth switching ratio adjustment coefficient, and the adjustment module controls the transmission processing unit to reduce the single switching ratio to 0.6 times the original value based on this instruction; if S2 is greater than S22, the analysis unit generates an instruction for the sixth switching ratio adjustment coefficient, and the adjustment module controls the transmission processing unit to reduce the single switching ratio to 0.5 times the original value.

[0057] It should be noted that the reduction multiple of the single switching ratio can also be set to other quantities that meet the requirements, and the number of conference units for a single switch is rounded up. It can be understood that in the invention embodiment, no specific limitation is made on any preset parameter, and the above values are not limited to this. Those skilled in the art can adjust the preset parameters according to actual needs or historical data analysis.

[0058] To better illustrate the determination process and corresponding processing of the switching of the transmission mode during the conference process, the following two specific embodiments are described. Embodiment 1

[0059] In this embodiment, when switching the wired transmission of a single conference unit to wireless transmission, the statistical unit calculates that the wired switching duration H1 = 190 ms during the switching process of the single conference unit. At this time, H1 is greater than H11 = 189 ms and less than or equal to H21 = 210 ms. Then, it is necessary to obtain the second audio signal transmitted by the single conference unit and calculate the corresponding wireless audio signal-to-noise ratio F2 = 65 dB. At this time, F2 is less than F02 = 70 dB. Then, the analysis unit needs to determine the reduction amplitude of the data transmission volume of the conference unit to be switched per unit time. After calculation, the wireless signal-to-noise ratio difference K2 = 5 dB. At this time, K2 is greater than K12 = 4 dB and less than or equal to K22. The analysis unit can generate an instruction for the second data transmission volume adjustment coefficient, and the control unit reduces the data transmission volume of the conference unit per unit time according to the instruction by 15% on the original basis, thereby increasing the corresponding audio signal-to-noise ratio, reducing the corresponding switching duration, and improving the switching efficiency of the transmission method during the conference process. Embodiment 2

[0060] In this embodiment, when switching the wireless transmission of a single conference unit to wired transmission, the statistical unit calculates that the wireless switching duration H2 = 335 ms during the switching process of the single conference unit. At this time, H2 is greater than H22 = 325 ms. Then, it is necessary to calculate the difference between H2 and H22 to obtain the wireless duration difference T2 = 10 ms. At this time, T2 is less than or equal to T02 = 20 ms. The statistical unit calculates that the number of conference units in a single switching process is C2 = 35 units. At this time, C2 is greater than C02 = 30 units. The calculated wireless quantity difference S2 = 5 units. At this time, S2 is greater than S12 = 2 units and less than or equal to S22 = 5 units. At this time, the analysis unit generates an instruction for the fifth switching ratio adjustment coefficient, and the adjustment module reduces the single switching ratio to 0.6 times the original value based on the instruction; in this conference, it is determined that the number of conference units entering the meeting is 100 units, and the total number of conference units to be switched in a single switching process is 70 units. Then, the single switching ratio is 35 / 70 = 0.5. At this time, the original single switching ratio can be modified to 0.5 * 0.6 = 0.3, that is, the number of wireless switches C2 for single switching is controlled to be 70 * 0.3 = 21 units. By reducing the number of conference units for single switching, the corresponding switching duration is reduced, thereby improving the switching efficiency of the transmission method during the conference process.

[0061] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0062] The above are only the preferred embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A digital conference system with wired and wireless hybrid transmission, characterized in that: include: A plurality of conference units, respectively used to transmit a first audio signal collected in a wired manner or a second audio signal collected in a wireless manner in a corresponding transmission mode, wherein the transmission mode includes wired transmission and wireless transmission; A plurality of transmission processing units, each transmission processing unit is connected to a corresponding conference unit and is used to switch the transmission mode of the conference unit to receive the first audio signal or the second audio signal; A statistical unit, which is connected to each of the transmission processing units and each of the conference units, respectively, and is used to count the switching time of each conference unit in switching the transmission mode, wherein the switching time is the time taken from the transmission processing unit executing the transmission mode switching operation to the conference unit completing the transmission mode switching; an analysis unit connected to the statistical unit, for determining whether the switching of the transmission mode of a single conference unit during the conference is qualified based on the acquired switching duration, and determining whether the switching is qualified based on the single audio signal after the switching based on the determination result, or determining the reason for the unqualified switching based on the switching duration, so as to generate an instruction based on the reason, the instruction being to determine the data transmission amount in the conference unit, or the single switching ratio of the transmission processing unit when performing a single switching, or the number of relay devices used by the conference unit on the transmission route; A control unit is respectively connected to the analysis unit, the conference units and the transmission processing units, and is used to determine, based on the instruction, whether to adjust the data transmission amount, or the single switching ratio, or the number of relay devices used.

2. The digital conference system with wired and wireless hybrid transmission according to claim 1 is characterized in that: It also includes a switching decision unit, which is connected to each of the transmission processing units, and is used to monitor each of the first audio signals or each of the second audio signals to determine whether to issue a decision instruction for switching the transmission mode of the abnormal conference unit, and the transmission processing unit is used to switch the transmission mode of the abnormal conference unit based on the decision instruction; The conference unit corresponding to the first audio signal or the second audio signal monitored to have a total harmonic distortion exceeding a threshold is recorded as the abnormal conference unit.

3. The digital conference system with wired and wireless hybrid transmission according to claim 1 is characterized in that: The analysis unit is further used to determine whether the switching of the transmission mode of the single conference unit is qualified based on the comparison result of the switching duration and the preset switching duration, and to obtain the single audio signal after switching based on the determination result, calculate the audio signal-to-noise ratio corresponding thereto, and re-determine whether the switching is qualified, wherein the audio signal is the first audio signal or the second audio signal; The analysis unit is further configured to determine the reason for the failure based on the difference between the switching duration and the preset switching duration when it is determined that the switching of the transmission mode of a single conference unit during the conference is failed.

4. The digital conference system with wired and wireless hybrid transmission according to claim 3 is characterized in that: The analysis unit is further used to determine whether to increase the number of relay devices used by the conference unit on the transmission route, or to reduce the data transmission volume of the conference unit per unit time, based on the comparison result of the audio signal-to-noise ratio and the critical audio signal-to-noise ratio; Wherein, when it is determined to switch from wireless transmission to wired transmission, it is determined whether to increase the number of relay devices used; when it is determined to switch from wired transmission to wireless transmission, it is determined whether to reduce the data transmission volume.

5. The digital conference system with wired and wireless hybrid transmission according to claim 4 is characterized in that: The analysis unit is further used to generate a corresponding instruction based on a comparison result of the signal-to-noise ratio difference and a preset signal-to-noise ratio difference to determine to increase the number of relay devices used, and the increase amplitude is positively correlated with the signal-to-noise ratio difference; The control unit is further used to issue a notification to increase the number of relay devices used based on the instruction; The signal-to-noise ratio difference is a difference between the critical audio signal-to-noise ratio and the audio signal-to-noise ratio.

6. The digital conference system with wired and wireless hybrid transmission according to claim 4 is characterized in that: The analysis unit is further used to generate a corresponding instruction based on a comparison result of the signal-to-noise ratio difference and a preset signal-to-noise ratio difference to determine to reduce the data transmission amount, and the reduction amplitude is positively correlated with the signal-to-noise ratio difference; The control unit is further used to control the conference unit to reduce the data transmission amount based on the instruction; The signal-to-noise ratio difference is a difference between the critical audio signal-to-noise ratio and the audio signal-to-noise ratio.

7. The digital conference system with wired and wireless hybrid transmission according to claim 3 is characterized in that: The analysis unit is also used to determine the reason why the switching of the transmission mode of a single conference unit during the conference is unqualified based on the comparison result of the time difference value and the preset time difference value; The analysis unit is further used to generate a corresponding instruction based on the cause to determine to issue a notification that there is a problem with the current network environment, or to redetermine a corresponding process based on a statistical number of the conference units during a single switch; The control unit is also used to issue a notification that there is a problem with the current network environment based on the instruction; The duration difference is the difference between the switching duration and the preset switching duration.

8. The digital conference system with wired and wireless hybrid transmission according to claim 7 is characterized in that: The analysis unit is also used to re-determine the reason why the switching of the transmission mode of a single conference unit during the conference is unqualified based on the comparison result of the switching number and the preset switching number; The analysis unit is further used to generate a corresponding instruction based on the cause to determine to issue a notification that the conference unit to be switched has a problem, or to reduce the single switching ratio; The control unit is further used to issue a notification that the conference unit to be switched has a problem based on the instruction, or to reduce the single switching ratio; The switching quantity is the number of conference units in a single switching counted by the statistical unit, and the single switching ratio is the ratio between the number of conference units switched in a single time and the total number of conference units that need to be switched.

9. The digital conference system with wired and wireless hybrid transmission according to claim 8, characterized in that: The analysis unit is further used to generate a corresponding instruction based on a comparison result between the quantity difference and a preset quantity difference to determine to reduce the single switching ratio, and the reduction amplitude is positively correlated with the quantity difference; The control unit controls the transmission processing unit to reduce the single switching ratio based on the instruction; The quantity difference is a difference between the switching quantity and the preset switching quantity.

10. A method for using a digital conference system with wired and wireless hybrid transmission, characterized in that: A digital conference system for wired and wireless hybrid transmission according to any one of claims 1 to 9, comprising: Transmitting the first audio signal collected in a wired manner or the second audio signal collected in a wireless manner through a plurality of conference units in corresponding transmission modes; Switching the transmission mode of the conference unit by each transmission processing unit connected to the corresponding conference unit to receive the first audio signal or the second audio signal, wherein the transmission mode includes wired transmission and wireless transmission; The switching time of each conference unit in switching the transmission mode is counted by a statistical unit respectively connected to each transmission processing unit and each conference unit, wherein the switching time is the time taken from the transmission processing unit executing the transmission mode switching operation to the conference unit completing the transmission mode switching; Determine, by means of an analysis unit connected to the statistical unit, whether the switching of the transmission mode of a single conference unit during the conference is qualified based on the acquired switching duration, and determine, based on the determination result, whether the switching is qualified again according to a single audio signal after the switching, or determine the reason for the unqualified switching according to the switching duration, so as to generate an instruction based on the reason, the instruction being to determine the amount of data transmission in the conference unit, or the single switching ratio of the transmission processing unit when performing a single switching, or the number of relay devices used by the conference unit on the transmission route; The control unit connected to the analysis unit, the conference units and the transmission processing units respectively determines to adjust the data transmission amount, the single switching ratio or the number of relay devices to be used based on the instruction.

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