FM and IP combined intelligent self-checking campus foreign language listening examination broadcasting system

Abstract

The invention relates to the technical field of broadcasting systems, in particular to an FM and IP combined intelligent self-checking campus foreign language listening examination broadcasting system. The system comprises an FM and IP main control module, a plurality of branch control modules, a TCP / IP network module and a classroom module, wherein each module comprises a plurality of units. Wherein the FM detection radio unit is used for carrying out radio test on test signals sent by the FM and IP main control module; the IP sound box is used for playing IP broadcast voice; and the detection pickup unit is used for acquiring feedback sounds of FM and IP broadcasts by virtue of a pickup head for detection. According to the system, through combined use of FM and IP broadcast, mutual complementation and mutual backup of a wireless technology and a wired technology are realized, and the requirement that an education management department must configure an emergency standby system for a hearing test can be better met; meanwhile, FM and IP broadcasts can be monitored in real time, monitored audios are intelligently analyzed, the final sound quality is accurately judged, and the monitoring efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of broadcasting systems, and in particular to an intelligent self-checking campus foreign language listening test broadcasting system combining FM and IP. Background Art

[0002] At present, schools of all levels and types need to build campus broadcasting systems for campus background music, daily routine ringtones, campus notifications, campus gymnastics, foreign language listening teaching and examinations, etc. In particular, foreign language listening teaching plays a pivotal role in foreign language teaching, and listening examinations are important contents of my country's junior high school entrance examination, college entrance examination, and college entrance examination. Listening examinations also have high requirements for the stability and sound quality of broadcasting. However, almost every year in the national foreign language listening examination, some playback equipment failures occur, which seriously affects the order of the examination, the psychology of candidates and the fairness of the examination. It can be seen that the traditional foreign language listening examination is seriously lagging behind the development of modern information technology in technology. Schools of all levels and types hope to build a digital, networked, and intelligent foreign language broadcasting system, and to achieve different content in different areas at the same time, so it must be able to realize functions such as partition playback, automatic playback, intelligent control, and remote management. At the same time, the broadcasting system is required to have high stability, intelligence, advancement, practicality, integration, and extensibility. The traditional wired constant-voltage broadcasting system is a broadcasting system that directly amplifies the audio signal and transmits it based on the power signal; the FM wireless broadcasting system is a broadcasting system that uses frequency modulation to transmit sound information; the IP network broadcasting system is a pure digital audio sound reinforcement system based on the IP data network, which digitally encodes the audio signal in the form of data packets according to the TCP / IP protocol on the local area network or wide area network, and then decodes it by the terminal. In addition, there are also technical solutions such as audio broadcasting system and infrared broadcasting system.

[0003] However, in the aforementioned existing broadcasting systems, technical solutions and application practices show that: on the one hand, broadcasting systems with a single technology have certain defects and security risks. For example, FM broadcasting is susceptible to interference, IP broadcasting has complex lines and structures, which makes it difficult to ensure the overall integrity rate. Constant-voltage broadcasting, audio broadcasting, and infrared broadcasting also have complex lines. On the other hand, the existing technology can generally only perform simple fault diagnosis and broadcast monitoring, and does not have the function of intelligently analyzing the feedback sound to determine the final effect of the broadcast. Therefore, in traditional broadcasting, in order to obtain whether the information broadcast is accurate and stable and the final effect of the broadcast reception, it is necessary to manually go to all sites to audition or monitor one by one, which consumes a lot of staff time and energy and cannot improve detection efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent self-checking campus foreign language listening test broadcasting system combining FM and IP, and solve the above two problems in the prior art: on the one hand, the two technical solutions of wired and wireless broadcasting are comprehensively applied to complement each other and back up each other. When the wired line is damaged due to geological disasters or construction, the wireless system can be used normally; when the wireless interference is serious, the wired system can be used normally, thereby effectively ensuring the listening broadcast of important exams. On the other hand, the present invention can perform real-time detection of the final receiving effect of FM and IP broadcasting, and intelligently analyze the feedback audio, so that it is possible to quickly determine whether the classroom listening is normal without large-scale manual inspections, avoiding or reducing the energy consumption caused by manual audition, and greatly improving the detection and maintenance efficiency of the broadcasting system.

[0005] To achieve the above-mentioned purpose, the present invention provides an intelligent self-checking campus foreign language listening test broadcasting system combining FM and IP. It comprises an FM and IP main control module, a plurality of sub-control modules, a TCP / IP network module and a classroom module, wherein the plurality of sub-control modules are sequentially connected to the TCP / IP network module, and the TCP / IP network module is connected to the FM and IP main control module and the classroom module;

[0006] The FM and IP main control modules are used to play voice via FM broadcasting and IP broadcasting;

[0007] The sub-control module is used to remotely control and manage the broadcasting of each campus;

[0008] The TCP / IP network module is used to connect the classroom module and the sub-control module to the FM and IP main control module through a remote network;

[0009] The classroom module is used to play broadcasts and test broadcasts in classrooms for foreign language listening tests on campus;

[0010] The classroom module includes a candidate sound receiving submodule and an integrated terminal submodule, and the candidate sound receiving submodule is wirelessly connected to the FM and IP main control module;

[0011] The examinee receiving submodule is used to receive the examination FM broadcast via a radio in the classroom;

[0012] The integrated terminal submodule is used to receive IP broadcasting and FM broadcasting in the classroom, and to detect and conduct feedback analysis on the listening effects of IP broadcasting and FM broadcasting.

[0013] The integrated terminal submodule includes an FM detection and receiving unit, an IP speaker, a feedback processing unit and a detection and sound pickup unit. The FM detection and receiving unit is wirelessly connected to the FM and IP main control module, the IP speaker is connected to the TCP / IP network module, the FM detection and receiving unit and the IP speaker are both connected to the detection and sound pickup unit, and the detection and sound pickup unit is connected to the TCP / IP network module through the feedback processing unit;

[0014] The FM detection and reception unit is used to send out an FM test signal in the FM and IP main control modules, perform a reception test on the test signal, and detect the working status of the FM system equipment at the same time;

[0015] The IP speaker is used to play IP broadcast voice;

[0016] The detection pickup unit is used to obtain the feedback sound of FM and IP broadcasting by relying on the detection pickup head;

[0017] The feedback processing unit is used to feed back the feedback sound to the TCP / IP network module after analog-to-digital conversion and IP data processing, and then the TCP / IP network module sends it to the FM and IP main control module for intelligent analysis, and records an alarm when a fault occurs.

[0018] The FM and IP master control module includes a dual-broadcast shared submodule, an FM broadcast submodule, an IP broadcast submodule and a monitoring speaker, wherein the dual-broadcast shared submodule is connected to the FM broadcast submodule and the IP broadcast submodule respectively, and the monitoring speaker is connected to the IP broadcast submodule;

[0019] The dual broadcasting shared submodule is used to equip the playback device and tuning device shared by FM and IP broadcasting;

[0020] The FM broadcast submodule is used to be equipped with equipment dedicated to FM broadcast;

[0021] The IP broadcast submodule is used to equip the equipment dedicated to IP broadcast;

[0022] The monitoring speaker is used to monitor the voice of IP broadcast.

[0023] The detection sound pickup unit includes an FM feedback sound acquisition subunit, an IP feedback sound acquisition subunit and a feedback sound sending subunit, and the FM feedback sound acquisition subunit, the IP feedback sound acquisition subunit and the feedback sound sending subunit are connected in sequence;

[0024] The FM feedback sound acquisition subunit is used to acquire the feedback sound of the FM broadcast using the pickup head to obtain the first feedback sound;

[0025] The IP feedback sound acquisition subunit is used to acquire the feedback sound of the IP broadcast using the sound pickup head to obtain the second feedback sound;

[0026] The feedback tone sending subunit is configured to package the first feedback tone and the second feedback tone and send them to the feedback processing unit.

[0027] The IP broadcast submodule includes an IP broadcast server, an IP broadcast supporting unit, a feedback sound recording unit, a feedback sound intelligent analysis unit and a visual display unit, and the IP broadcast server, the IP broadcast supporting unit, the feedback sound recording unit, the feedback sound intelligent analysis unit and the visual display unit are all composed of software;

[0028] The IP broadcast server is used to control IP broadcast;

[0029] The IP broadcast supporting unit is a supporting device used in conjunction with the IP broadcast server;

[0030] The feedback sound recording unit is used to record and save the feedback sound;

[0031] The feedback sound intelligent analysis unit is used to intelligently analyze the sound quality of the feedback sound;

[0032] The visual display unit is used to display the analyzed sound quality.

[0033] Wherein, the integrated terminal submodule further includes an IP broadcast control unit, an IP broadcast decoding unit, a remote receiving unit, an audio source switching unit and a power amplifier unit, wherein the IP broadcast control unit is connected to the feedback processing unit, the IP broadcast decoding unit is respectively connected to the IP broadcast control unit and the audio source switching unit, the remote receiving unit is respectively connected to the IP broadcast decoding unit and the audio source switching unit, the audio source switching unit is connected to the power amplifier unit, and the power amplifier unit is connected to the IP speaker;

[0034] The IP broadcast control unit is used to connect to the IP network in the TCP / IP network module to control the IP broadcast playback;

[0035] The IP broadcast decoding unit is used to decode the IP broadcast sent by the IP broadcast server;

[0036] The remote receiving unit is used to receive remote control signals and wireless microphone signals;

[0037] The audio source switching unit is used to switch the audio sources of IP broadcasting and various external devices, including CDs, microphones, computers, etc.;

[0038] The power amplifier unit is used to amplify and optimize the sound source and send it to the IP speaker for playback.

[0039] The feedback sound intelligent analysis unit includes a feedback sound preprocessing subunit, an audio feature extraction subunit, a normal sound judgment subunit, an intermittent sound judgment subunit, an interference sound judgment subunit, a distorted sound judgment subunit and a silent or low sound judgment subunit, the audio feature extraction subunit is connected to the feedback sound preprocessing subunit, and the normal sound judgment subunit, the intermittent sound judgment subunit, the interference sound judgment subunit, the distorted sound judgment subunit and the silent or low sound judgment subunit are all connected to the audio feature extraction subunit;

[0040] The feedback sound preprocessing subunit is used to reduce noise and filter the feedback sound to obtain the audio to be processed;

[0041] The audio feature extraction subunit is used to extract audio features in the audio to be processed using audio analysis software, wherein the audio features include continuity, interference, fidelity and strength of the sound;

[0042] The normal sound judgment subunit is used to judge that the audio to be processed is a normal sound when the audio analysis software analyzes that the audio is continuous, interference-free, fidelity and strong;

[0043] The intermittent sound judgment subunit is used to judge the audio as intermittent sound when the audio analysis software analyzes that the audio is interrupted or jumped;

[0044] The interference sound judgment subunit is used to judge the audio as interference sound when the audio analysis software analyzes that the audio is superimposed with an interference signal;

[0045] The distorted sound judgment subunit is used to judge the audio as distorted sound when the audio analysis software analyzes that the fidelity of the audio is lower than a normal value;

[0046] The silent or low sound judging subunit is used to judge as silent or low sound when the audio analysis software analyzes that there is no audio information or the sound is low.

[0047] The present invention discloses an intelligent self-checking campus foreign language listening test broadcasting system combining FM and IP, wherein the integrated terminal submodule is used for receiving IP broadcasting and FM broadcasting in the classroom, and for detecting and performing feedback analysis on the listening effects of IP broadcasting and FM broadcasting. The FM detection sound receiving unit is wirelessly connected to the FM and IP main control modules, the IP speaker is connected to the TCP / IP network module, the FM detection sound receiving unit and the IP speaker are both connected to the detection sound pickup unit, and the detection sound pickup unit is connected to the TCP / IP network module through the feedback processing unit; the FM detection sound receiving unit is used to send out an FM test signal in the FM and IP main control modules, perform a sound reception test on the test signal, and detect the working status of the FM system equipment at the same time; the IP speaker is used to play IP broadcast voice; the detection sound pickup unit is used to obtain the feedback sound of FM and IP broadcast by relying on the detection sound pickup head; the feedback processing unit is used to feed back the feedback sound to the TCP / IP network module after analog-to-digital conversion and IP data processing, and then send it to the FM and IP main control module by the TCP / IP network module for intelligent analysis, and record an alarm when a fault occurs;

[0048] Through real-time monitoring and diagnosis of the working status and communication status of system equipment, fault alarm and recording; real-time remote monitoring of the power supply voltage, network communication status, temperature and output signal status of all equipment and terminals; the sound signal fed back from the pickup head is analyzed by audio data intelligent analysis software, including audio data visualization, information extraction, noise analysis and clarity analysis, to determine the actual effect of sound reception in each classroom and present it visually. Of course, technicians can also patrol and monitor the actual playback sound of each examination room, thereby reducing the repetitive work of staff going to each classroom for repeated audition;

[0049] Therefore, by combining FM and IP broadcasting, wireless technology and wired technology can complement each other and back up each other, which can better meet the requirements of the education administration department that an emergency backup system must be configured for listening tests. At the same time, not only can classrooms in multiple campuses be controlled synchronously and individually, but FM and IP broadcasting can also be monitored in real time, and the monitored audio can be intelligently analyzed to accurately determine the final sound quality without manual monitoring, greatly improving monitoring efficiency and monitoring accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0051] Figure 1It is an overall principle diagram of the FM and IP combined intelligent self-check campus foreign language listening test broadcasting system of the present invention.

[0052] Figure 2 It is a schematic diagram of the integrated terminal submodule of the present invention.

[0053] Figure 3 It is a schematic diagram of the IP broadcast submodule of the present invention.

[0054] Figure 4 It is a principle diagram of the detection pickup unit of the present invention.

[0055] Figure 5 It is a schematic diagram of the feedback sound intelligent analysis unit of the present invention.

[0056] 1-FM and IP main control module, 101-dual broadcast shared submodule, 102-FM broadcast submodule, 103-IP broadcast submodule, 1031-IP broadcast server, 1032-IP broadcast supporting unit, 1033-feedback sound recording unit, 1034-feedback sound intelligent analysis unit, 1035-visual display unit, 104-monitoring speaker, 2-sub-control module, 3-TCP / IP network module, 4-classroom module, 5-candidate receiving submodule, 6-integrated terminal submodule, 601-FM detection receiving unit, 602-IP speaker, 603-feedback processing unit Element, 604-detection pickup unit, 6041-FM feedback sound acquisition subunit, 6042-IP feedback sound acquisition subunit, 6043-feedback sound sending subunit, 605-IP broadcast control unit, 606-IP broadcast decoding unit, 607-remote receiving unit, 608-sound source switching unit, 609-power amplifier unit, 7-feedback sound preprocessing subunit, 8-audio feature extraction subunit, 9-normal sound judgment subunit, 10-intermittent sound judgment subunit, 11-interference sound judgment subunit, 12-distorted sound judgment subunit, 13-silent or low sound judgment subunit. DETAILED DESCRIPTION

[0057] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0058] See also Figures 1 to 5The present invention provides an intelligent self-check campus foreign language listening test broadcasting system combining FM and IP. It includes an FM and IP main control module 1, multiple sub-control modules 2, a TCP / IP network module 3 and a classroom module 4. The classroom module 4 includes a candidate sound receiving submodule 5 and an integrated terminal submodule 6. The integrated terminal submodule 6 includes an FM detection sound receiving unit 601, an IP speaker 602, a feedback processing unit 603 and a detection sound pickup unit 604. The FM and IP main control module 1 includes a dual broadcast shared submodule 101, an FM broadcast submodule 102, an IP broadcast submodule 103 and a monitoring speaker 104. The IP broadcast submodule 103 includes an IP broadcast server 1031, an IP broadcast supporting unit 1032, a feedback sound recording unit 1033, and a feedback sound intelligent analysis unit 1034. 034 and a visualization display unit 1035, the detection pickup unit 604 includes an FM feedback sound acquisition subunit 6041, an IP feedback sound acquisition subunit 6042 and a feedback sound sending subunit 6043, the integrated terminal submodule 6 also includes an IP broadcast control unit 605, an IP broadcast decoding unit 606, a remote receiving unit 607, a sound source switching unit 608 and a power amplifier unit 609, and the feedback sound intelligent analysis unit 1034 includes a feedback sound preprocessing subunit 7, an audio feature extraction subunit 8, a normal sound judgment subunit 9, an intermittent sound judgment subunit 10, an interference sound judgment subunit 11, a distorted sound judgment subunit 12 and a silent or low sound judgment subunit 13.

[0059] Among them, multiple sub-control modules 2 are connected to the TCP / IP network module 3 in sequence, and the TCP / IP network module 3 is connected to the FM and IP main control module 1 and the classroom module 4; the FM and IP main control module 1 is used to play voice through FM broadcasting and IP broadcasting; the sub-control module 2 is used to remotely control and manage the remote broadcasting of each campus; the TCP / IP network module 3 is used to remotely connect the classroom module 4 and the sub-control module 2 with the FM and IP main control module 1; the classroom module 4 is used to play broadcasting and test broadcasting in the classroom of the campus foreign language listening test; the examinee receiving sub-module 5 is connected to the integrated terminal sub-module 6; the examinee receiving sub-module 5 is used to receive the test FM broadcasting through the radio in the classroom; the integrated terminal sub-module 6 is used to receive IP broadcasting and FM broadcasting in the classroom, and to detect and feedback analyze the listening effects of IP broadcasting and FM broadcasting; the FM detection radio unit 601 is connected to the The FM and IP main control modules 1 are connected, the IP speaker 602 is connected to the TCP / IP network module 3, the FM detection sound receiving unit 601 and the IP speaker 602 are both connected to the detection sound pickup unit 604, and the detection sound pickup unit 604 is connected to the TCP / IP network module 3 through the feedback processing unit 603; the FM detection sound receiving unit 601 is used to send out an FM test signal in the FM and IP main control module 1, perform a sound reception test on the test signal, and detect the working status of the FM system equipment at the same time; the IP speaker 602 is used to play IP broadcast voice; the detection sound pickup unit 604 is used to obtain the feedback sound of FM and IP broadcast by relying on the detection sound pickup head; the feedback processing unit 603 is used to feed back the feedback sound to the TCP / IP network module 3 after analog-to-digital conversion and IP data processing, and then send it to the FM and IP main control module 1 by the TCP / IP network module 3 for intelligent analysis, and record an alarm when a fault occurs.

[0060] The FM and IP main control module 1 is the broadcast main control center. The main control center supports analog audio sources and digital audio sources. The analog audio source can be provided by a cassette player, DVD, tuner and broadcast microphone, and the digital audio source can be provided by a server or an intelligent broadcast computer. The player adopts a master-slave mode and is equipped with a master-slave playback switcher. Each of the sub-control modules 2 can control a campus. The sub-control module 2 is a broadcast sub-control center. A remote management computer (also a smart player), a player, an FM transmitter and an antenna are set in the sub-control center, and then connected to the TCP / IP network module 3 to remotely control the IP broadcast of the classroom. The broadcast of this application has the following two integrated functions: integrating campus news, ringtones, gymnastics and other broadcasts; connecting the emergency broadcast platform with the campus broadcast platform, and incorporating the campus broadcast system into the provincial and municipal emergency broadcast dispatching and control system to realize the forced insertion and playback of emergency broadcasts, and to control the campus broadcast simulcast;

[0061] This application adopts two relatively independent broadcasting systems to back up each other; FM wireless broadcasting is economical and affordable, involves a small number of equipment and links, and the failure rate is usually low; when multiple campuses are close, one transmitter can cover them; and when multiple campuses are far apart, one campus is equipped with one set, and the same transmission frequency can be used; IP cable broadcasting is broadcasted through a local area network, with low latency, high fidelity, and multi-functions, and can realize broadcast control of partitions, groups, fixed points, and fixed program sources to meet the listening test needs of different regions and grades; however, IP broadcasting involves a large number of equipment and links, and the failure rate is usually high; therefore, the two systems complement each other and back up each other.

[0062] This application has the function of status and effect detection, real-time monitoring and diagnosis of the working status and communication status of system equipment, and fault alarm and recording; real-time remote monitoring of the power supply voltage, network communication status, temperature, output signal status, etc. of all equipment and terminals. The sound signal fed back from the pickup head is analyzed by audio data intelligent analysis software, including audio data visualization, information extraction, noise analysis and clarity analysis, to determine the actual effect of receiving sound in each classroom and present it visually. Of course, technicians can also monitor the actual playback sound of each examination room, thereby reducing the repetitive work of staff going to each classroom to listen repeatedly.

[0063] This application has a redundant backup function, the first of which is systematic backup: the system adopts a digital + analog technical route, and comprehensively applies two technical solutions: network IP wired and FM wireless, including network IP broadcasting that can cover multiple campuses (one set for the entire school) and FM wireless broadcasting that can cover each campus (one set for one campus). When one of the technical solutions is interfered with or fails, the system can switch smoothly.

[0064] The second is single-machine backup: backup functions are implemented in all equipment from the control center to the examination room. For example, a backup device is added to important equipment such as tape decks, CD players, servers, FM transmitters, and integrated examination room terminals. When a problem occurs in a device, it can automatically switch to the backup machine within 3 seconds to ensure the safety of the examination.

[0065] The third is functional backup: that is, the IP network speakers in the classroom receive both digital sound signals from the IP network connected to the switch and analog sound signals from the FM receiving module; students can listen directly through external speakers, or through infrared IR radiation, by wearing infrared radios on their heads, so as to reduce mutual interference.

[0066] Secondly, the dual-broadcast shared submodule 101 is connected to the FM broadcast submodule 102 and the IP broadcast submodule 103 respectively, and the monitoring speaker 104 is connected to the IP broadcast submodule 103; the dual-broadcast shared submodule 101 is used to be equipped with playback equipment and tuning equipment shared by FM and IP broadcasts; the FM broadcast submodule 102 is used to be equipped with equipment dedicated to FM broadcasting; the IP broadcast submodule 103 is used to be equipped with equipment dedicated to IP broadcasting; the monitoring speaker 104 is used to monitor the voice of IP broadcasting.

[0067] The dual broadcast shared submodule 101 is a shared device for FM and IP broadcasting, including a tape and CD player, a broadcast control microphone and a digital network mixer; the FM broadcast submodule 102 is a dedicated device for FM broadcasting, including an FM transmitter, a main and standby transmitter switcher, a feeder and a transmitting antenna; the IP broadcast submodule 103 is a dedicated device for IP broadcasting;

[0068] The integrated terminal submodule 6 integrates the IP speaker 602, the FM radio for detection, the microphone head (MIC) for detection, and the feedback processor into a multi-terminal integration and integrated design, that is, all classroom-related equipment is integrated into one terminal, which is convenient for installation, debugging and maintenance. At the same time, the integrated terminal also integrates the CD disc playback function. When it is installed in the classroom, it can be used for individual classrooms to play minority languages ​​separately;

[0069] This application has a remote management function. Managers can remotely operate and manage various systems, stand-alone machines and functions within their authority through a local area network, and set, configure and control the entire broadcasting system. The system interface is friendly and the operation is stable. It can realize the switching of system wireless transmission (FM wireless or infrared IR wireless) and amplification (FM reception and amplification or IP reception and amplification), and can adjust the volume. Each branch campus establishes a sub-control center, which can be centrally controlled by the main control center or independently controlled. Remote operation instructions can be converted into corresponding infrared remote control signals (with self-learning function) through an intelligent controller to control the power supply and playback operation of the equipment in the playback center. It can also use Delphi programming technology, VC programming technology, single-chip microcomputer technology, etc. to realize the function of controlling the transmitter and external device power supply by the playback signal, computer RS-232 serial port and intelligent broadcast controller.

[0070] This application has the function of upgrading and expansion. IP broadcasting is to transmit the audio signal in the form of data packets through digital encoding in the local area network or wide area network according to the TCP / IP protocol. The system can be expanded on the original basis, and the main control functions can be updated through software upgrades; FM broadcasting can achieve campus expansion by adding playback and transmission equipment separately without large-scale wiring;

[0071] This application has the function of multi-channel simultaneous broadcasting. For multiple program sources in IP broadcasting, zone broadcasting can be carried out to achieve different programs being played in different classrooms at the same time, and students do not need to wear headphones; the integrated classroom terminal can also perform multi-channel FM modulation and micro-power full-frequency transmission (transmission power ≤ 3mW) for multiple program sources, and use multiple frequency points to transmit simultaneously. Students can use FM headphones to listen to different content by selecting different receiving frequencies; low-power full-frequency transmission in each examination room can not only ensure the signal strength, uniformity and anti-interference in the classroom, but also avoid leaks and off-site cheating assistance caused by signal radiation outside the examination room;

[0072] At the same time, the IP broadcast server 1031, the IP broadcast supporting unit 1032, the feedback sound recording unit 1033, the feedback sound intelligent analysis unit 1034 and the visual display unit 1035 are connected in sequence; the IP broadcast server 1031 is used to control the IP broadcast; the IP broadcast supporting unit 1032 is a supporting device used in conjunction with the IP broadcast server 1031; the feedback sound recording unit 1033 is used to record and save the feedback sound; the feedback sound intelligent analysis unit 1034 is used to intelligently analyze the sound quality of the feedback sound; the visual display unit 1035 is used to display the analyzed sound quality.

[0073] In the IP broadcasting dedicated equipment, the IP broadcasting supporting unit 1032 is the IP network broadcasting system software, the IP broadcasting network call microphone, etc. The IP broadcasting is controlled by operating the IP network broadcasting system software. The IP broadcasting network call microphone can make calls remotely, and the feedback audio and feedback information can also be remotely viewed and monitored by the computer managed by the sub-control center through the authorization of the sub-control center.

[0074] In addition, the FM feedback sound acquisition subunit 6041, the IP feedback sound acquisition subunit 6042 and the feedback sound sending subunit 6043 are connected in sequence; the FM feedback sound acquisition subunit 6041 is used to acquire the feedback sound of the FM broadcast using the pickup head to obtain the first feedback sound; the IP feedback sound acquisition subunit 6042 is used to acquire the feedback sound of the IP broadcast using the pickup head to obtain the second feedback sound; the feedback sound sending subunit 6043 is used to package the first feedback sound and the second feedback sound and send them to the feedback processing unit 603.

[0075] The feedback sound acquisition subunit is a pickup head or a pickup, wherein the FM feedback sound acquisition subunit 6041 and the IP feedback sound acquisition subunit 6042 use the same pickup head, and pick up the test signals transmitted by FM and IP broadcasts in turn; the feedback sound of the two broadcasting systems is acquired by the feedback sound acquisition subunit and sent to the feedback processing unit 603, and after the feedback sound is subjected to analog-to-digital conversion and IP data processing, it is fed back to the TCP / IP network module 3, and then sent by the TCP / IP network module 3 to the feedback sound intelligent analysis unit 1034 of the IP broadcast submodule 103 of the FM and IP main control module 1 for intelligent analysis.

[0076] Again, the IP broadcast control unit 605 is connected to the feedback processing unit 603, the IP broadcast decoding unit 606 is connected to the IP broadcast control unit 605 and the sound source switching unit 608 respectively, the remote receiving unit 607 is connected to the IP broadcast decoding unit 606 and the sound source switching unit 608 respectively, the sound source switching unit 608 is connected to the power amplifier unit 609, and the power amplifier unit 609 is connected to the IP speaker 602; the IP broadcast control unit 605 is used to communicate with the TCP / The IP network module 3 is connected to the IP network, thereby controlling the IP broadcast playback; the IP broadcast decoding unit 606 is used to decode the IP broadcast sent by the IP broadcast server 1031; the remote receiving unit 607 is used to receive remote remote control signals and wireless microphone signals; the sound source switching unit 608 is used to switch the sound sources of IP broadcast and various external devices, including optical disks, microphones and computers; the power amplifier unit 609 is used to amplify and optimize the sound source and send it to the IP speaker 602 for playback.

[0077] After the IP broadcast server 1031 sends out an audio signal, it is sent to the IP broadcast control unit 605 through the TCP / IP network module 3, and then decoded and converted into sound sources in sequence, and finally amplified, and then played through the speaker of the IP speaker 602; in the sound source conversion, it can be converted into CD playback, U disk, TF card, wireless microphone and external computer playback;

[0078] The integrated terminal submodule 6 is based on the TCP / IP protocol, and includes a power supply circuit, a U disk and SD card interface, an IP network interface, a network decoding, an audio input and output, an infrared or Bluetooth microphone reception, a power amplification and a status display structure; it has the functions of network on-demand, remote control on-demand, DHCP, terminal program online upgrade and IP intercom; it can control the switch and volume adjustment of the speaker through local remote control (and mobile phone WIFI), and is configured with an audio output interface; therefore, it can integrate the teacher's microphone amplification, multimedia computer sound and wired broadcast amplification; after integration, signal switching and volume control operations can be performed through remote control, local remote control, and local multimedia classroom controller; if equipped with a 2.4G Bluetooth wireless transceiver module, it can be automatically paired with a teaching Bluetooth microphone (the microphone can also integrate a laser pen and PPT page turning functions) when it is turned on.

[0079] Finally, the audio feature extraction subunit 8 is connected to the feedback sound preprocessing subunit 7, and the normal sound judgment subunit 9, the intermittent sound judgment subunit 10, the interference sound judgment subunit 11, the distorted sound judgment subunit 12 and the silent or low sound judgment subunit 13 are all connected to the audio feature extraction subunit 8; the feedback sound preprocessing subunit 7 is used to reduce noise and filter the feedback sound to obtain the audio to be processed; the audio feature extraction subunit 8 is used to extract the audio features in the audio to be processed by using audio analysis software, and the audio features include continuity, interference, fidelity and strength of the sound; the normal sound judgment subunit 9 is used to judge the sound When the audio analysis software analyzes that the audio is continuous, interference-free, fidelity and strong, the audio to be processed is judged to be normal sound; the intermittent sound judgment subunit 10 is used to judge the audio to be intermittent sound when the audio analysis software analyzes that the audio is interrupted or jumped; the interference sound judgment subunit 11 is used to judge the audio to be interference sound when the audio analysis software analyzes that the audio is superimposed with an interference signal; the distorted sound judgment subunit 12 is used to judge the audio to be distorted sound when the audio analysis software analyzes that the fidelity of the audio is lower than the normal value; the silent or low sound judgment subunit 13 is used to judge the audio to be silent or low sound when the audio analysis software analyzes that there is no audio information or the sound is small.

[0080] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An intelligent self-checking campus foreign language listening test broadcasting system combining FM and IP, characterized in that: It includes an FM and IP main control module, a plurality of sub-control modules, a TCP / IP network module and a classroom module, wherein the plurality of sub-control modules are sequentially connected to the TCP / IP network module, and the TCP / IP network module is connected to the FM and IP main control module and the classroom module; The FM and IP main control modules are used to play voice via FM broadcasting and IP broadcasting; The sub-control module is used to remotely control and manage the broadcasting of each campus; The TCP / IP network module is used to connect the classroom module and the sub-control module to the FM and IP main control module through a remote network; The classroom module is used to play broadcasts and test broadcasts in classrooms for foreign language listening tests on campus; The classroom module includes a candidate sound receiving submodule and an integrated terminal submodule, and the candidate sound receiving submodule is wirelessly connected to the FM and IP main control module; The examinee receiving submodule is used to receive the examination FM broadcast via a radio in the classroom; The integrated terminal submodule is used to receive IP broadcasting in the classroom, and to detect and conduct feedback analysis on the listening effects of IP broadcasting and FM broadcasting.

2. The FM and IP combined intelligent self-check campus foreign language listening test broadcasting system as claimed in claim 1, characterized in that: The integrated terminal submodule includes an FM detection and receiving unit, an IP speaker, a feedback processing unit and a detection and sound pickup unit, wherein the FM detection and receiving unit is wirelessly connected to the FM and IP main control module, the IP speaker is connected to the TCP / IP network module, the FM detection and receiving unit and the IP speaker are both wirelessly connected to the detection and sound pickup unit, and the detection and sound pickup unit is connected to the TCP / IP network module via the feedback processing unit; The FM detection and reception unit is used to send out an FM test signal in the FM and IP main control modules, perform a reception test on the test signal, and detect the working status of the FM system equipment at the same time; The IP speaker is used to play IP broadcast voice; The detection pickup unit is used to obtain the feedback sound of FM and IP broadcasting by relying on the detection pickup head; The feedback processing unit is used to feed back the feedback sound to the TCP / IP network module after analog-to-digital conversion and IP data processing, and then the TCP / IP network module sends it to the FM and IP main control module for intelligent analysis, and records an alarm when a fault occurs.

3. The FM and IP combined intelligent self-check campus foreign language listening test broadcasting system as claimed in claim 2, characterized in that: The FM and IP master control module includes a dual-broadcast shared submodule, an FM broadcast submodule, an IP broadcast submodule and a monitoring speaker, wherein the dual-broadcast shared submodule is connected to the FM broadcast submodule and the IP broadcast submodule respectively, and the monitoring speaker is connected to the IP broadcast submodule; The dual broadcasting shared submodule is used to equip the playback device and tuning device shared by FM and IP broadcasting; The FM broadcast submodule is used to be equipped with equipment dedicated to FM broadcast; The IP broadcast submodule is used to equip the equipment dedicated to IP broadcast; The monitoring speaker is used to monitor the voice of IP broadcast.

4. The FM and IP combined intelligent self-check campus foreign language listening test broadcasting system as claimed in claim 3, characterized in that: The detection sound pickup unit comprises an FM feedback sound acquisition subunit, an IP feedback sound acquisition subunit and a feedback sound sending subunit, wherein the FM feedback sound acquisition subunit, the IP feedback sound acquisition subunit and the feedback sound sending subunit are connected in sequence; The FM feedback sound acquisition subunit is used to acquire the feedback sound of the FM broadcast using the pickup head to obtain the first feedback sound; The IP feedback sound acquisition subunit is used to acquire the feedback sound of the IP broadcast using the sound pickup head to obtain the second feedback sound; The feedback tone sending subunit is configured to package the first feedback tone and the second feedback tone and send them to the feedback processing unit.

5. The FM and IP combined intelligent self-check campus foreign language listening test broadcasting system as claimed in claim 4, characterized in that: The IP broadcast submodule includes an IP broadcast server, an IP broadcast supporting unit, a feedback sound recording unit, a feedback sound intelligent analysis unit and a visual display unit, and the IP broadcast server, the IP broadcast supporting unit, the feedback sound recording unit, the feedback sound intelligent analysis unit and the visual display unit are all composed of software; The IP broadcast server is used to control IP broadcast; The IP broadcast supporting unit is a supporting device used in conjunction with the IP broadcast server; The feedback sound recording unit is used to record and save the feedback sound; The feedback sound intelligent analysis unit is used to intelligently analyze the sound quality of the feedback sound; The visual display unit is used to display the analyzed sound quality.

6. The FM and IP combined intelligent self-check campus foreign language listening test broadcasting system as claimed in claim 5, characterized in that: The integrated terminal submodule also includes an IP broadcast control unit, an IP broadcast decoding unit, a remote receiving unit, a sound source switching unit and a power amplifier unit, wherein the IP broadcast control unit is connected to the feedback processing unit, the IP broadcast decoding unit is respectively connected to the IP broadcast control unit and the sound source switching unit, the remote receiving unit is respectively connected to the IP broadcast decoding unit and the sound source switching unit, the sound source switching unit is connected to the power amplifier unit, and the power amplifier unit is connected to the IP speaker; The IP broadcast control unit is used to connect to the IP network in the TCP / IP network module to control the IP broadcast playback; The IP broadcast decoding unit is used to decode the IP broadcast sent by the IP broadcast server; The remote receiving unit is used to receive remote control signals and wireless microphone signals; The audio source switching unit is used to switch the audio sources of IP broadcasting and various external devices, including CDs, microphones, computers, etc.; The power amplifier unit is used to amplify and optimize the sound source and send it to the IP speaker for playback.

7. The FM and IP combined intelligent self-check campus foreign language listening test broadcasting system as claimed in claim 6, characterized in that: The feedback sound intelligent analysis unit comprises a feedback sound preprocessing subunit, an audio feature extraction subunit, a normal sound judgment subunit, an intermittent sound judgment subunit, an interference sound judgment subunit, a distorted sound judgment subunit and a silent or low sound judgment subunit, wherein the audio feature extraction subunit is connected to the feedback sound preprocessing subunit, and the normal sound judgment subunit, the intermittent sound judgment subunit, the interference sound judgment subunit and the silent or low sound judgment subunit are all connected to the audio feature extraction subunit; The feedback sound preprocessing subunit is used to reduce noise and filter the feedback sound to obtain the audio to be processed; The audio feature extraction subunit is used to extract audio features in the audio to be processed using audio analysis software, wherein the audio features include continuity, interference, fidelity and strength of the sound; The normal sound judgment subunit is used to judge that the audio to be processed is a normal sound when the audio analysis software analyzes that the audio is continuous, interference-free, fidelity and strong; The intermittent sound judgment subunit is used to judge the audio as intermittent sound when the audio analysis software analyzes that the audio is interrupted or jumped; The interference sound judgment subunit is used to judge the audio as interference sound when the audio analysis software analyzes that the audio is superimposed with an interference signal; The distorted sound judgment subunit is used to judge the audio as distorted sound when the audio analysis software analyzes that the fidelity of the audio is lower than a normal value; The silent or low sound judging subunit is used to judge as silent or low sound when the audio analysis software analyzes that there is no audio information or the sound is low.

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