Standard conformity test verification system for high-performance network audio stream

Abstract

The invention discloses a standard conformity test verification system for a high-performance network audio stream, and the system comprises a test detection system. The multi-type sound source distribution system, the audio jumper connection system, the multi-form high-performance network audio stream input system, the multi-form high-performance network audio stream processing system, the multi-form high-performance network audio stream output system and the multi-brand network exchange system are respectively connected with the multi-type sound source distribution system and the audio jumper connection system. According to the embodiment of the invention, the problem that various high-performance network audio stream transmission protocols in the current professional audio industry field are not intercommunicated and opened is solved, and test verification of standard conformance indexes such as electrical performance, network transmission and control performance of multi-brand, multi-type and multi-form high-performance network audio stream products is supported. And the test efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the field of testing technology, and in particular, relates to a high-performance network audio stream standard compliance testing and verification system. Background Art

[0002] With the rapid development of technologies such as cloud computing, the Internet of Things, big data, artificial intelligence, and mobile Internet, the professional audio industry has ushered in important development opportunities for digitalization, networking, and intelligence. Currently, professional audio equipment and systems are in an important development stage of transformation and upgrading from analog systems and digital systems to networking. High-performance network audio streaming technology solves the problem of analog audio and digital audio networking, simplifying the complexity of professional audio system architecture and equipment connection.

[0003] However, the current professional audio industry uses a variety of high-performance network audio stream transmission protocols, and there are often problems such as audio streams not being interoperable and control protocols not being open, which creates a huge obstacle for system integrators in secondary development and seriously affects the end customer experience. At the same time, there is currently a lack of systems for testing and verifying electrical performance, network audio stream interoperability, control signal interoperability, and network audio stream transmission analysis for various transmission protocols, various brands, and multi-form products. This undoubtedly hinders the development of my country's professional audio-related industries towards networking and intelligence. Summary of the invention

[0004] An embodiment of the present application provides a high-performance network audio stream standard compliance test and verification system, which is used to at least solve the problem in the related art that there is a lack of a system for testing and verifying electrical performance, network audio stream intercommunication, control signal intercommunication, network audio stream transmission analysis, etc. for various transmission protocols, various brands, and multi-form products.

[0005] The embodiment of the present application provides a standard compliance test and verification system for a high-performance network audio stream, comprising: a test and detection system, and multiple types of audio source distribution systems, audio jump systems, multi-form high-performance network audio stream input systems, multi-form high-performance network audio stream processing systems, multi-form high-performance network audio stream output systems, and multi-brand network switching systems respectively connected thereto; wherein the audio jump system comprises a first audio jump subsystem, a second audio jump subsystem, and a third audio jump subsystem; The test and detection system is used to perform electrical performance tests on various systems and devices connected to it, and to test the standard compliance indicators of high-performance network audio streams output by various systems and devices connected to it; the high-performance network audio stream is a high-fidelity digital audio signal transmitted in real time on Ethernet in the form of an Internet Protocol stream, and the high fidelity is a sampling rate of more than 44.1 kHz, a linear quantization of more than 16 bits, and a delay of hundreds of microseconds to milliseconds; The standard compliance indicators at least include any one of the following: audio stream interoperability, control signal interoperability, audio stream security, audio stream high-pressure test, and long-term test.

[0006] The standard compliance test and verification system for high-performance network audio streams according to the embodiments of the present application solves the problems of non-interoperability and non-openness among various high-performance network audio stream transmission protocols in the current professional audio industry field. It is the first test and verification system in the industry that can support the test and verification of standard compliance indicators such as electrical performance, network transmission, and control performance for high-performance network audio stream products of multiple brands, multiple types, and multiple forms. Moreover, the system architecture is scientifically and ingeniously designed, facilitating the access of various brands, multiple types, and multiple forms of products, as well as the rapid access of the test and detection system, avoiding complex and cumbersome connection work, improving the test efficiency, and thus playing an important role in promoting the rapid transformation and development of the professional audio industry towards networking and intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0008] Figure 1 It is a schematic structural diagram of a standard compliance test and verification system for high-performance network audio streams provided by the embodiments of the present application; Figure 2 It is a more specific internal structural diagram of the standard compliance test and verification system for high-performance network audio streams provided by the embodiments of the present application.

[0009] Reference Signs: Test and Detection System 100, Multi-Type Sound Source Distribution System 200, Multi-Form High-Performance Network Audio Stream Input System 300, Multi-Form High-Performance Network Audio Stream Processing System 400, Multi-Form High-Performance Network Audio Stream Output System 500, First Audio Jump Subsystem 610, Second Audio Jump Subsystem 620, Third Audio Jump Subsystem 630. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0010] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0011] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0012] With the rapid development of technologies such as cloud computing, the Internet of Things, big data, artificial intelligence, and mobile Internet, the professional audio industry has ushered in important development opportunities for digitalization, networking, and intelligence. Currently, professional audio equipment and systems are in an important development stage of transformation and upgrading from analog systems and digital systems to networking. High-performance network audio streaming technology solves the problem of analog audio and digital audio networking, simplifying the complexity of professional audio system architecture and equipment connection.

[0013] However, at present, there are a variety of high-performance network audio stream transmission protocols adopted in the professional audio industry. Problems such as non-interoperability of audio streams and non-open control protocols often occur among them, which pose a huge obstacle to the secondary development of system integrators and seriously affect the user experience of end customers. At the same time, there is currently no system in the industry that can conduct test and verification on the electrical performance, network audio stream interoperability, control signal interoperability, network audio stream transmission analysis, delay analysis, and clock synchronization analysis of products with various transmission protocols, various brands, and multiple forms. There is also no comparative test and mixed test on the above performances of products with various transmission protocols and multiple forms, nor is there a system that can support long-term (7*24 hours) and high-pressure (the number of network audio stream channels exceeds 128) test and verification of various transmission protocols, multiple brands, and multiple forms of products on a large scale (more than 100 network audio stream nodes). Therefore, this current development situation undoubtedly hinders the process of the professional audio-related industries in our country towards networking and intelligent development.

[0014] To solve the problems of related technologies, the embodiment of the present application provides a standard compliance test and verification system for high-performance network audio streams.

[0015] The following will combine the accompanying drawings and, through specific embodiments and their application scenarios, elaborate in detail on the standard compliance test and verification system for high-performance network audio streams provided by the embodiment of the present application.

[0016] It should be noted that the high-performance network audio stream in the embodiment of the present application refers to a technology that transmits high-fidelity digital audio signals in real time in the form of IP (Internet Protocol) streams over ordinary Ethernet, and can be applied to many professional audio fields including live sound reinforcement. The high-fidelity meaning of the high-performance network audio stream refers to a sampling rate above 44.1 kHz, linear quantization above 16 bit (usually 48 kHz sampling and 24 bit quantization), and low latency (from hundreds of microseconds to milliseconds), and no lossy or lossless compression processing is used.

[0017] Reference Figure 1 , is a schematic structural diagram of a standard compliance test and verification system for high-performance network audio streams according to an embodiment of the present application. As Figure 1 shown, the standard compliance test and verification system for high-performance network audio streams includes a test and detection system 100, and a variety of sound source distribution systems 200, audio patch systems, multi-form high-performance network audio stream input systems 300, multi-form high-performance network audio stream processing systems 400, multi-form high-performance network audio stream output systems 500, and multi-brand network switching systems that are respectively connected to it.

[0018] Specifically, the audio jump connection system includes a first audio jump connection subsystem 610, a second audio jump connection subsystem 620, and a third audio jump connection subsystem 630, which are used to transmit the audio signal along a path other than the fixed connection path according to the preset allocation requirements, so that the audio signal flows to different systems and devices. That is, the audio jump connection system is mainly used for audio jump connection between various types of sound source distribution systems, multi-form high-performance network audio stream input systems, multi-form high-performance network audio stream processing systems, multi-form high-performance network audio stream output systems, and test and detection systems.

[0019] Specifically, the test and detection system 100 is used to perform electrical performance tests on each system and device connected thereto, and to perform tests on the standard compliance indicators of the high-performance network audio streams output by each system and device connected thereto; the high-performance network audio stream is a high-fidelity digital audio signal transmitted in real time in the form of an Internet protocol stream over Ethernet, and the high-fidelity is a sampling rate of more than 44.1 kHz, a linear quantization of more than 16 bit, and a delay of hundreds of microseconds to milliseconds.

[0020] It should be noted that in this embodiment, the standard compliance indicators include at least any one of the following: audio stream interoperability, control signal interoperability, audio stream security, audio stream high-pressure test, and long-time test.

[0021] Furthermore, Figure 2 shows a more specific internal structure diagram of the standard compliance test and verification system for the high-performance network audio stream according to the embodiment of the present application.

[0022] As Figure 2 shown, the various types of sound source distribution system includes a plurality of passive microphone distributors and a plurality of passive audio distributors.

[0023] In some embodiments, the various types of sound source distribution system is used to respectively access multiple microphone signals through a plurality of passive microphone distributors, and to distribute each microphone signal into the same multiple first audio signals and then input them to the first audio jump connection subsystem; and, to respectively access multiple line audio signals through a plurality of passive audio distributors, and to distribute each line audio signal into the same multiple second audio signals and then input them to the first audio jump connection subsystem.

[0024] Specifically, the same multiple-channel first audio signals are common differential audio signals (balanced audio signals), and the industry-standard three-pin XLR interface is adopted. One of the channels allows a direct output signal, and the other channels all support transformer isolation output and post-stage phantom power supply; the same multiple-channel second audio signals are line audio signals, compatible with common differential audio signals (balanced audio signals) and single-ended signals (unbalanced audio signals), and the industry-standard three-pin XLR interface is adopted. One of the channels allows a direct output signal, and the other channels all support transformer isolation output.

[0025] In some embodiments, the input and output interfaces of the first audio patch subsystem (i.e., Figure 2 the middle audio patch subsystem 1), the second audio patch subsystem (i.e., Figure 2 the middle audio patch subsystem 2), and the third audio patch subsystem (i.e., Figure 2 the middle audio patch subsystem 3) are patched according to the preset allocation requirements.

[0026] It should be noted that in this embodiment, the input and output interfaces of the first audio patch subsystem, the second audio patch subsystem, and the third audio patch subsystem all adopt the industry-standard TRS audio interface (compatible with TS audio interface), which is suitable for connecting common differential audio signals (balanced audio signals) and single-ended signals (unbalanced audio signals). Therefore, it can support various modules or the whole machine of the multi-form high-performance network audio stream input system to quickly perform analog audio input connection.

[0027] Among them, the first audio patch subsystem is respectively connected to various types of sound source distribution systems and multi-form high-performance network audio stream input systems, and is used to transmit audio signals along paths other than the fixed connection paths according to the preset allocation requirements so that the audio signals flow to different systems and devices, including: patching the first audio signals and / or the second audio signals input by various types of sound source distribution systems to the second audio patch subsystem or the third audio patch subsystem; the second audio patch subsystem is connected to the multi-form high-performance network audio stream processing system; the third audio patch subsystem is respectively connected to the multi-form high-performance network audio stream output system and multiple passive speakers.

[0028] That is to say, after the microphone signal and the line audio signal are distributed into multiple outputs through the passive microphone distributor and the passive audio distributor and given to the first audio patch subsystem, the first audio patch subsystem receives the audio signals output by the multi-type sound source distribution system, communicates with the multi-form high-performance network audio stream input system, provides input signals for it as needed, and can be flexibly patched with the second audio patch subsystem and the third audio patch subsystem to achieve flexible transmission of audio signals between systems; the second audio patch subsystem is connected to the input and output ends of the multi-form high-performance network audio stream processing system to achieve internal patching, and can be patched to the first audio patch subsystem and the third audio patch subsystem to achieve flexible allocation of audio signals between different system devices; the third audio patch subsystem is connected to the multi-form high-performance network audio stream output system and the passive speaker to achieve internal patching, and can be patched to the first audio patch subsystem and the second audio patch subsystem to ensure flexible transmission of audio signals between related devices.

[0029] In this way, as a part of the audio patch system, the first audio patch subsystem is connected to the multi-type sound source distribution system and the multi-form high-performance network audio stream input system. The input and output interfaces of the first audio patch subsystem can be patched arbitrarily according to needs, facilitating the multi-form high-performance network audio stream input system to freely select input signals; flexible patching can also be achieved between the first audio patch subsystem, the second audio patch subsystem, and the third audio patch subsystem, solving the flexibility problem of audio signal input and output connections between system devices.

[0030] In some embodiments, the multi-form high-performance network audio stream input system is used to perform signal processing on the first audio signal and / or the second audio signal to obtain a high-performance network audio stream suitable for Ethernet transmission, and copy and distribute the high-performance network audio stream to the access layer of the first primary multi-brand network switching system (i.e., Figure 2 the access layer 1 of the primary multi-brand network switching system in Figure 2 and the access layer of the first standby multi-brand network switching system (i.e.,

[0031] the access layer 1 of the standby multi-brand network switching system in

[0032] Among them, analog-to-digital conversion includes: converting an analog audio signal into a digital audio signal for storage, editing, encoding, transmission, and processing; RTP packet encapsulation includes: packing real-time audio data according to the provisions of the RTP protocol for transmission in the network, so as to ensure correct identification, sequence control, time synchronization, etc. of real-time data in network transmission, enabling the receiving party to accurately receive and restore the media stream.

[0033] That is to say, the multi-modal high-performance network audio stream input system communicates with the first audio jump connection subsystem and receives the analog microphone or audio signal provided by it. Further, the analog microphone signal or analog audio signal is processed by the multi-modal high-performance network audio stream input system, such as AD conversion, amplification, audio stream encryption, RTP packet encapsulation, and network precise clock synchronization, etc., to be converted into a high-performance network audio stream suitable for Ethernet transmission, and then replicated and distributed to the access layers of the primary and standby multi-brand network switching systems, so as to enter the primary multi-brand network switching system and the standby multi-brand network switching system respectively.

[0034] Optionally, the device form of the multi-modal high-performance network audio stream input system can be a whole machine or a network audio stream input module circuit, supporting the access of multiple brand-related products. This embodiment does not make specific limitations on this.

[0035] In some embodiments, the multi-modal high-performance network audio stream processing system is used to process the third audio signal output by the second audio jump connection subsystem to obtain a high-performance network audio stream suitable for Ethernet transmission, and replicate and distribute the high-performance network audio stream to the access layer of the second primary multi-brand network switching system (i.e., Figure 2 the access layer 2 of the primary multi-brand network switching system in Figure 2 and the access layer of the second standby multi-brand network switching system (i.e.,

[0036] the access layer 2 of the standby multi-brand network switching system in

[0037] Specifically, for the multi-modal high-performance network audio stream processing system, on the one hand, the microphone signal or audio signal output by the second audio jump connection subsystem is processed through AD conversion, amplification, inversion, compression, limiting, equalization, feedback suppression, mixing, reverberation cancellation, automatic gain adjustment, encryption, RTP data packet encapsulation, and network precise clock synchronization, etc., and is converted into a high-performance network audio stream suitable for Ethernet transmission. The high-performance network audio stream is copied and distributed to the access layer of the primary multi-brand network switching system and the access layer of the standby multi-brand network switching system, and enters the primary multi-brand network switching system and the standby multi-brand network switching system respectively. On the other hand, the high-performance network audio stream transmitted through Ethernet is processed through network precise clock synchronization, RTP data packet parsing, decryption, amplification, inversion, compression, limiting, equalization, feedback suppression, mixing, reverberation cancellation, automatic gain adjustment, and DA conversion, and an analog audio signal is output to the second audio jump connection subsystem.

[0038] As an optional embodiment, as Figure 2 shown, the multi-modal high-performance network audio stream output system includes: a network audio power amplifier unit, an active network audio speaker, and a network audio stream output module circuit. That is, the device form of the multi-modal high-performance network audio stream output system can be a network audio power amplifier unit or an active network audio speaker, or a network audio stream output module circuit, which supports the access of multiple brand-related products, and this embodiment does not make specific limitations on this.

[0039] In some embodiments, the multi-modal high-performance network audio stream output system is used to convert the high-performance network audio stream transmitted by the multi-brand network switching system into an analog audio signal after a series of processes such as protocol decoding, encapsulation decoding, and decryption, and send it to the third audio jump connection subsystem to drive a passive speaker.

[0040] Specifically, the multi-modal high-performance network audio stream output system can be used to process the high-performance network audio stream transmitted through Ethernet through network precise clock synchronization, RTP data packet parsing, decryption, amplification, inversion, compression, limiting, equalization, feedback suppression, mixing, reverberation cancellation, automatic gain adjustment, frequency division, and DA conversion. In one case, the output analog audio signal is sent to the third audio jump connection subsystem and finally output to a passive speaker. In another case, it is directly sent to the speaker unit of an active speaker.

[0041] In some optional embodiments, as Figure 2 shown, the multi-brand network switching system includes a first primary multi-brand network switching system access layer (i.e., Figure 2 the primary multi-brand network switching system access layer 1 in Figure 2Standby multi-brand network switching system access layer 1), Second primary multi-brand network switching system access layer (i.e., Figure 2 Primary multi-brand network switching system access layer 2) and Second standby multi-brand network switching system access layer (i.e., Figure 2 Standby multi-brand network switching system access layer 2), Primary multi-brand network switching system convergence layer, Primary multi-brand network switching system core layer, Standby multi-brand network switching system convergence layer, Standby multi-brand network switching system core layer, which are used to verify the primary network and / or standby network connections of each system and device in the standard compliance test verification system. It can be understood that the multi-brand network switching system also includes the connection network cables corresponding to each system and device in the entire standard compliance test verification system.

[0042] It should be noted that in this embodiment, both the module or the whole machine of the multi-form high-performance network audio stream input system, the multi-form high-performance network audio stream processing system, and the multi-form high-performance network audio stream output system have two network interfaces, the primary network interface is connected to the primary network, and the standby network interface is connected to the standby network, which are independent of each other.

[0043] It should also be noted that the multi-brand network switching system adopts industry-standard network interfaces, and the downstream interfaces of the multi-brand network switching system access layer are compatible with gigabit and hundred-megabit network interfaces. Therefore, it can be seamlessly connected to various modules or whole machines of the multi-form high-performance network audio stream input system, the multi-form high-performance network audio stream processing system, and the multi-form high-performance network audio stream output system.

[0044] In addition, in some optional embodiments, as Figure 2 shown, the high-performance network audio stream test and detection system at least includes: a whole machine / module electrical performance test analyzer, a high-performance network audio stream network analyzer, a delay analyzer, and a clock synchronization analyzer.

[0045] Among them, the whole machine / module electrical performance test analyzer can quickly perform electrical performance test and detection on any device in the multi-type sound source distribution system, the multi-form high-performance network audio stream input system, the multi-form high-performance network audio stream processing system, and the multi-form high-performance network audio stream output system by connecting to the audio patch system; instruments such as the high-performance network audio stream network analyzer, the delay analyzer, and the clock synchronization analyzer can perform comprehensive and in-depth performance test and detection on the network audio stream in the multi-form high-performance network audio stream input system, the multi-form high-performance network audio stream processing system, and the multi-form high-performance network audio stream output system through the multi-brand network switching system.

[0046] Further, in some alternative embodiments, the standard compliance test verification system for high-performance network audio streams according to the embodiments of the present application further includes an intelligent management and control platform for monitoring the operating states of various systems and devices connected to the multi-brand network switching system through a pre-connected preset model.

[0047] In another embodiment, the monitoring of various systems and devices by the intelligent management and control platform further includes: the online status of the device, signal level, function setting status, temperature, and fault alarm, etc.

[0048] In this way, the intelligent management and control platform monitors, manages, controls, and operates and maintains the devices connected to the switching network in the high-performance network audio stream standard compliance test verification system, and performs intelligent analysis, judgment, and processing on the system through various big data models, realizing the visual and intelligent management and control of system devices, and greatly improving the usage efficiency of the test verification system.

[0049] Thus, the standard compliance test verification system for high-performance network audio streams according to the embodiments of the present application solves the problem in the related art of lacking a large-scale, multi-brand, multi-type, multi-form, long-time, and high-pressure test verification platform.

[0050] In addition, it is also the first platform in the industry that can support high-performance network audio stream products for large-scale (≥100 network audio stream nodes), long-time (7*24 hours), and high-pressure (the number of network audio stream channels exceeds 128) comparison or mixed test verification of electrical performance, network transmission, and control performance. Moreover, it can also monitor the status of high-performance network audio stream devices in real time through an intelligent management and control platform, and can be remotely controlled, managed, and maintained, greatly improving the work efficiency of the test verification. That is, it can realize the convenience and high efficiency in the compliance comparison test verification and mixed test verification processes of high-performance network audio stream products or network switching products of different brands, different types, and different forms under high pressure and for a long time according to the current high-performance network audio stream standards or specifications at home and abroad.

[0051] It should be noted that for the convenience of description, when describing the above device or system, various modules are described separately according to their functions. Of course, when implementing the present application, the functions of each module can be realized in the same or multiple software and / or hardware.

[0052] The functional blocks shown in the above-described structural block diagrams can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application-specific integrated circuit (ASIC), appropriate firmware, a plug-in, a functional card, and so on. When implemented in software, the elements of the present application are programs or code segments for performing the required tasks. The program or code segment can be stored in a machine-readable medium or transmitted via a data signal carried in a carrier wave over a transmission medium or a communication link. "Machine-readable medium" can include any medium that can store or transmit information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical discs, hard disks, fiber optic media, radio frequency (RF) links, and so on. The code segment can be downloaded via a computer network such as the Internet, an intranet, and so on.

[0053] It should also be noted that the exemplary embodiments mentioned in the present application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps, that is, the steps can be executed in the order mentioned in the embodiments, or different from the order in the embodiments, or several steps can be executed simultaneously.

[0054] Aspects of the present application have been described above with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present application. It should be understood that each block in the flowcharts and / or block diagrams, and the combinations of blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing devices to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing devices enable the implementation of the functions / actions specified in one or more blocks of the flowcharts and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It should also be understood that each block in the block diagrams and / or flowcharts, and the combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by dedicated hardware for performing the specified functions or actions, or by a combination of dedicated hardware and computer instructions.

[0055] As described above, this is only the specific implementation manner of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present application.

Claims

1. A high-performance network audio stream standard compliance test and verification system, characterized in that: include: A test and detection system, and various types of audio source distribution systems, audio jump systems, multi-form high-performance network audio stream input systems, multi-form high-performance network audio stream processing systems, multi-form high-performance network audio stream output systems, and multi-brand network switching systems respectively connected thereto; wherein the audio jump system includes a first audio jump subsystem, a second audio jump subsystem, and a third audio jump subsystem; The test and detection system is used to perform electrical performance tests on various systems and devices connected to it, and to test the standard compliance indicators of high-performance network audio streams output by various systems and devices connected to it; the high-performance network audio stream is a high-fidelity digital audio signal transmitted in real time on Ethernet in the form of an Internet Protocol stream, and the high fidelity is a sampling rate of more than 44.1 kHz, a linear quantization of more than 16 bits, and a delay of hundreds of microseconds to milliseconds; The standard compliance indicators include at least any one of the following: audio stream interoperability, control signal interoperability, audio stream security, audio stream high stress test and long time test.

2. The standard compliance test verification system according to claim 1, characterized in that: The multi-type audio source distribution system includes multiple passive microphone distributors and multiple passive audio distributors; The multi-type audio source distribution system is used to respectively access multi-channel microphone signals through multiple passive microphone distributors, and distribute each microphone signal into the same multi-channel first audio signals and then input them into the first audio jump subsystem; Furthermore, multiple line audio signals are respectively connected through multiple passive audio distributors, and each line audio signal is distributed into the same multiple second audio signals and then input into the first audio jump subsystem.

3. The standard compliance test verification system according to claim 2, characterized in that: The input and output interfaces of the first audio jump subsystem, the second audio jump subsystem, and the third audio jump subsystem are all jump-connected according to preset deployment requirements; Among them, the first audio jumping subsystem is respectively connected to various types of audio source distribution systems and multi-format high-performance network audio stream input systems, and is used to transmit audio signals along paths other than fixed connection paths according to pre-set allocation requirements to make the audio signals flow to different systems and devices, including: jumping the first audio signal and / or the second audio signal input by the various types of audio source distribution systems to the second audio jumping subsystem or the third audio jumping subsystem; the second audio jumping subsystem is connected to a multi-format high-performance network audio stream processing system; the third audio jumping subsystem is respectively connected to a multi-format high-performance network audio stream output system and multiple passive speakers.

4. The standard compliance test verification system according to claim 3, characterized in that: The multi-modal high-performance network audio stream input system is used to process the first audio signal and / or the second audio signal to obtain a high-performance network audio stream suitable for Ethernet transmission, and to copy and distribute the high-performance network audio stream to the first main multi-brand network switching system access layer and the first backup multi-brand network switching system access layer.

5. The standard compliance test verification system according to claim 3, characterized in that: The multi-modal high-performance network audio stream processing system is used to perform signal processing on the third audio signal output by the second audio jump subsystem to obtain a high-performance network audio stream suitable for Ethernet transmission, and to copy and distribute the high-performance network audio stream to the second main multi-brand network switching system access layer and the second backup multi-brand network switching system access layer; and to perform signal processing on the high-performance network audio transmitted by the multi-brand network switching system and output an analog audio signal to the second audio jump subsystem.

6. The standard compliance test verification system according to claim 3, characterized in that: The multi-modal high-performance network audio stream output system is used to convert the high-performance network audio stream transmitted by the multi-brand network switching system into an analog audio signal after deprotocol, decapsulation, decoding and decryption, and send it to the third audio jump subsystem to drive the passive speaker.

7. The standard compliance test verification system according to claim 6, characterized in that: The multi-modal high-performance network audio stream output system comprises: a network audio power amplifier, an active network audio speaker, and a network audio stream output module circuit.

8. The standard compliance test verification system according to claim 4 or 5, characterized in that: The signal processing includes at least any one of the following: analog-to-digital conversion, amplification, encryption, real-time transport protocol data packet encapsulation, and network precision clock synchronization.

9. The standard compliance test verification system according to claim 1, characterized in that: The multi-brand network switching system includes a first main multi-brand network switching system access layer, a first backup multi-brand network switching system access layer, a second main multi-brand network switching system access layer, a second backup multi-brand network switching system access layer, a main multi-brand network switching system import layer, a main multi-brand network switching system core layer, a backup multi-brand network switching system import layer, and a backup multi-brand network switching system core layer, which are used for standard compliance testing and verification of the main network and / or backup network connections of each system and equipment in the system.

10. The standard compliance test verification system according to claim 1, characterized in that: The standard compliance test verification system also includes an intelligent management and control platform for monitoring the operating status of various systems and devices connected to the multi-brand network switching system through a pre-connected preset model.

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