Audio transmission device and system

Abstract

The utility model relates to the field of audio equipment, in particular to an audio transmission device and system. The device comprises a main control processor, an audio processor, an audio input module, an audio decoding output module, a short-distance wireless communication transceiver module, a satellite navigation positioning module and a UWB positioning module. The main control processor is respectively connected with the audio processor, the audio input module, the audio decoding output module, the short-distance wireless communication transceiver module, the satellite navigation positioning module and the UWB positioning module; and the audio processor is connected with the audio input module and the audio decoding output module, and is used for improving the synchronous limited condition and the sound amplification effect of audio sound amplification during the cruise of the festooned vehicle.

Description

Technical Field

[0001] This utility model relates to the field of audio equipment, and in particular to an audio transmission device and system. Background Technology

[0002] Parades are highly entertaining and visually appealing events, typically held in theme parks, festivals, or large-scale celebrations. For example, in a theme park parade, as the floats move through the park, their microphones amplify the received sound, meeting the audio requirements of the performance area. Simultaneously, through audio transmission technology, the amplified audio signals from the floats can be transmitted to various sound equipment in the ground-based sound reinforcement system. This allows nearby sound equipment to synchronize with the floats' movement, achieving coordinated audio transmission across different spatial levels. This creates a more immersive audio-visual experience for the audience, significantly enhancing the artistic appeal and entertainment value of theme park parades.

[0003] However, existing methods for providing sound reinforcement for parade floats typically only offer one-way synchronous sound reinforcement, transmitting audio signals from the floats to the ground-based sound reinforcement system. This makes bidirectional synchronous sound reinforcement difficult, resulting in limited synchronization. Furthermore, because the floats' positions change during the parade, the various audio devices in the ground-based sound reinforcement system struggle to accurately follow the sound, affecting the overall sound reinforcement effect. Therefore, improving the synchronization limitations and sound reinforcement effect of parade float audio reinforcement has become an urgent technical problem to be solved. Utility Model Content

[0004] This utility model discloses an audio transmission device and system for improving the synchronization limitations and amplification effect of audio amplification in float parades.

[0005] This utility model provides an audio transmission device, including: a main control processor, an audio processor, an audio input module, an audio decoding output module, a short-range wireless communication transceiver module, a satellite navigation and positioning module, and a UWB positioning module; the main control processor is connected to the audio processor, the audio input module, the audio decoding output module, the short-range wireless communication transceiver module, the satellite navigation and positioning module, and the UWB positioning module respectively; the audio processor is connected to the audio input module and the audio decoding output module respectively.

[0006] Optionally, the short-range wireless communication transceiver module includes a 2.4G transmitting unit and a 2.4G receiving unit;

[0007] The 2.4G transmitting unit and the 2.4G receiving unit are respectively connected to the main control processor.

[0008] Optionally, the main control processor is also connected to a lighting control interface.

[0009] Optionally, a display module may also be included;

[0010] The display module is connected to the main control processor.

[0011] Optionally, the main control processor is an ARM processor.

[0012] Optionally, the audio processor is a DSP processor.

[0013] Optionally, it may also include a network communication module;

[0014] The network communication module is connected to the main control processor.

[0015] Optionally, the network communication module is a mobile communication module or a network interface module.

[0016] This utility model also provides an audio transmission system, the system including a system host, a sound amplifier, and at least two audio transmission devices as described above;

[0017] Among them, the network communication module in the audio transmission device located on the mobile end is a mobile communication module; the network communication module in the audio transmission device located on the fixed end is a network interface module.

[0018] The audio transmission device located at the fixed end is connected to the system host through the network interface module, and is connected to the loudspeakers one by one;

[0019] The audio transmission device located on the mobile terminal is connected to the system host through the mobile communication module;

[0020] The audio transmission device located at the fixed end is communicatively connected to the audio transmission device located at the mobile end.

[0021] Optionally, the mobile communication module is a 4G communication module.

[0022] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:

[0023] This utility model provides an audio transmission device, including: a main control processor, an audio processor, an audio input module, an audio decoding output module, a short-range wireless communication transceiver module, a satellite navigation and positioning module, and a UWB positioning module; the main control processor is connected to the audio processor, the audio input module, the audio decoding output module, the short-range wireless communication transceiver module, the satellite navigation and positioning module, and the UWB positioning module respectively; the audio processor is connected to the audio input module and the audio decoding output module respectively.

[0024] In this invention, an audio input module is used to receive audio signals. An audio processor, connected to the audio decoding output module and the audio input module, receives the audio signals transmitted by the audio input module and outputs the audio signals through the audio decoding output module. Based on the audio processor, audio input module, and audio decoding output module, the reception and output of audio signals are realized. A main control processor, connected to the audio processor, audio input module, and audio decoding output module, can receive the audio signals transmitted by the audio processor and transmit audio signals back to the audio processor. A short-range wireless communication transceiver module is used to send and receive data. The main control processor, connected to the short-range wireless communication transceiver module, communicates with other audio transmission devices through the short-range wireless communication transceiver module, receiving audio signals sent by other audio transmission devices and sending audio signals to other audio transmission devices. Therefore, in this invention, based on the connection relationship between the main control processor and the audio processor, audio input module, audio decoding output module, and short-range wireless communication transceiver module, an audio signal transmission channel and a reception channel are established, enabling bidirectional audio signal transmission with other audio transmission devices. Therefore, when the audio transmission device provided in this utility model embodiment is applied to the float and the ground sound reinforcement system, the audio transmission device in the float can transmit audio signals bidirectionally with the audio transmission device in the ground sound reinforcement system. This avoids the situation in the prior art where the audio signal on the float can only be transmitted unidirectionally to the ground sound reinforcement system, resulting in unidirectional synchronous sound reinforcement. It improves the synchronization limitation of the audio reinforcement of the float parade and realizes bidirectional synchronous sound reinforcement.

[0025] Furthermore, in this invention, the satellite navigation and positioning module is used to determine the position coordinates of the audio transmission device, and the UWB positioning module is used to determine the distance data between its own audio transmission device and other audio transmission devices. The main control processor is connected to both the satellite navigation and positioning module and the UWB positioning module, and can be used to receive position coordinates and distance data. It can also be used to exchange position coordinates and distance data with other audio transmission devices through a short-range wireless communication transceiver module, realizing the perception of its own position and the position perception of other audio transmission devices. Moreover, the accuracy of position perception is further improved through the different aspects of position data provided by the satellite navigation and positioning module and the UWB positioning module. Therefore, when the audio transmission device provided in this embodiment is applied to floats and ground-based sound reinforcement systems, the audio transmission device in the float can exchange position data with the audio transmission device in the ground-based sound reinforcement system, enabling the ground-based sound reinforcement system to obtain the accurate position of the float. This provides effective position data support for the ground-based sound reinforcement system to accurately follow the sound reinforcement, thus providing strong technical support for improving the sound reinforcement effect. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of an audio transmission device provided in an embodiment of the present utility model;

[0028] Figure 2 This is another structural schematic diagram of an audio transmission device provided in an embodiment of the present utility model;

[0029] Figure 3 This is a schematic diagram of the structure of an audio transmission system provided in an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the fixed audio transceiver device provided in the embodiments of this utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the mobile audio transceiver device provided in the embodiments of this utility model. Detailed Implementation

[0032] The existing parade floats can move and follow each other with amplified sound through a variety of technical means.

[0033] For example, one technical means is wireless audio transmission technology. Wireless microphone transmitters are installed on the floats to convert the performers' voice signals into wireless signals and transmit them. At the same time, wireless receivers are installed in the ground sound reinforcement system around the floats to receive the wireless audio signals from the floats and amplify them. To ensure synchronization, a low-latency wireless audio transmission scheme can be selected so that the sound from the floats and the sound from the ground sound reinforcement system are emitted almost simultaneously. However, this method may have the following problems: (1) Signal stability issues. During the movement of the floats, they may be interfered with by other wireless signals in the surrounding environment, resulting in interruptions, noise, or distortion of the audio signal. For example, there may be mobile phone signals from tourists and wireless signals from other electronic devices in the theme park, which may interfere with the wireless audio transmission of the floats. When the floats travel to certain specific areas, such as densely built-up areas or near large metal structures, the wireless signals may be blocked or reflected, thus affecting the strength and stability of the signals; (2) Transmission distance limitations. The transmission distance of some wireless audio transmission devices is limited, which may not meet the needs of the long parade routes in large theme parks. If the floats exceed the transmission distance range, the audio signal may weaken or be lost. Even within the transmission distance range, the signal strength may gradually weaken as the distance between the floats and the receiving equipment increases, leading to a decrease in audio quality. (3) Synchronization issues. Although low-latency wireless transmission technology is used, there may still be some delay in practical applications. Especially when the floats move quickly or multiple floats perform at the same time, the synchronization between the audio signals of different floats and between the floats and the ground sound reinforcement system may be affected. Since the transmission of wireless signals is affected by a variety of factors, such as signal strength and interference, the audio signal delay may be unstable, with large delay fluctuations at times, affecting the audience's listening experience.

[0034] Another technical approach is network audio transmission technology. Audio acquisition equipment and network transmission modules are installed on the floats, and the acquired audio signals are transmitted to the ground audio control system via the network. The audio control system then distributes the audio signals to various sound reinforcement devices around the floats for synchronous sound reinforcement. This approach can achieve remote control and management, and audio parameters can be flexibly adjusted as needed. However, this approach may have the following issues: (1) Dependence on network stability. Network audio transmission requires a stable network environment. If the network in the theme park fails, becomes congested, or becomes unstable, the transmission of audio signals may be severely affected. For example, during peak tourist seasons, a large number of tourists using the wireless network simultaneously may lead to insufficient network bandwidth, affecting the quality and stability of audio transmission. Network equipment failures may also cause audio transmission interruptions. For example, when network equipment such as routers and switches fails, it may affect the process of transmitting the float's audio signals to the ground audio control system. (2) System complexity and cost. Network audio transmission systems are usually quite complex and require professional technicians for design, installation, and debugging. This increases the construction cost and maintenance difficulty of the system. To ensure high-quality transmission of audio signals, high-performance network equipment and audio processing equipment may be required, which further increases the cost.

[0035] In addition, a distributed audio system can be considered. Multiple small audio devices are distributed in the area around the floats and connected and synchronized wirelessly or by wire. Each audio device can independently process and amplify audio, thereby achieving a more uniform and three-dimensional sound effect. In practical applications, it is necessary to select appropriate technical solutions and design and debug the system according to the specific needs and site conditions of the theme park to ensure that the audio effect of the float parade performance is optimal. However, this approach may have the following issues: (1) Equipment management and coordination. The distributed audio system consists of multiple small audio devices, which increases the difficulty of equipment management and coordination. For example, it is necessary to ensure that the parameter settings of each device are consistent to achieve a uniform sound effect. At the same time, when a device malfunctions, it is necessary to quickly locate and repair it to avoid affecting the operation of the entire system. During the float parade, it may be necessary to dynamically adjust the distributed audio devices to adapt to different performance scenarios and audience positions. This requires a complex control system and operating procedures. (2) Audio quality consistency. Since the performance and parameters of the distributed audio devices may vary, the audio quality may be inconsistent in different locations. For example, the volume of some devices may be louder, while the volume of some devices may be softer, affecting the overall sound effect. Distributed audio systems may also have limited audio processing capabilities, making it impossible to achieve complex audio effects and equalization adjustments, thus affecting the improvement of audio quality.

[0036] Therefore, existing technologies at least have the drawback of only having a one-way synchronous sound reinforcement function that transmits audio signals from the floats to the ground sound reinforcement system, making it difficult to achieve two-way synchronous sound reinforcement, resulting in limited synchronization. Moreover, since the position of the floats changes during the parade, it is difficult for the various sound equipment in the ground sound reinforcement system to accurately follow the sound reinforcement, thus affecting the sound reinforcement effect.

[0037] In view of this, the present invention provides an audio transmission device and system for improving the synchronization limitations and amplification effect of audio amplification in float parades.

[0038] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be noted that the terms "front," "rear," "upper," "lower," "both ends," "center," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Relational terms such as "first," "second," etc., are only used to distinguish one entity from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities.

[0040] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Please see Figure 1 One embodiment of the audio transmission device provided in this utility model includes: a main control processor 1, an audio processor 2, an audio input module 3, an audio decoding output module 4, a short-range wireless communication transceiver module 5, a satellite navigation and positioning module 6, and a UWB positioning module 7;

[0042] The main control processor 1 is connected to the audio processor 2, the audio input module 3, the audio decoding output module 4, the short-range wireless communication transceiver module 5, the satellite navigation and positioning module 6, and the UWB positioning module 7, respectively.

[0043] The audio processor 2 is connected to the audio input module 3 and the audio decoding output module 4, respectively.

[0044] It should be noted that the audio input module 3 is equipped with an analog microphone input interface and an analog AUX input interface, enabling the input of microphone signals and other types of audio signals. The audio decoding output module 4 is used to output audio signals. In one example, the audio decoding output module 4 can be connected to a sound reinforcement amplifier module to transmit audio signals to the sound reinforcement amplifier module. After power amplification by the sound reinforcement amplifier module, the output drives the speakers for on-site sound reinforcement. The audio processor 2 has conventional audio processing functions, capable of processing received audio signals. Conventional audio processing includes input selection, mixing, sound effects processing, and volume control of the input audio signals. The main control processor 1 is connected to the audio processor 2, audio input module 3, and audio decoding output module 4. It can be used to receive audio signals transmitted by the audio processor 2 and to transmit audio signals back to the audio processor 2. In this embodiment, based on the audio processor 2, audio input module 3, and audio decoding output module 4, the reception and output of audio signals are realized, which can be used for on-site sound reinforcement.

[0045] The short-range wireless communication transceiver module 5 has transceiver functions and can communicate with other devices to send and receive data. The main control processor 1 is connected to the short-range wireless communication transceiver module 5 and is used to communicate with other audio transmission devices through the short-range wireless communication transceiver module 5 to receive audio signals sent by other audio transmission devices and to send audio signals to other audio transmission devices.

[0046] Therefore, in this embodiment, based on the connection relationship between the main control processor 1 and the audio processor 2, the audio input module 3, the audio decoding output module 4, and the short-range wireless communication transceiver module 5, an audio signal transmission channel and a receiving channel are established, thereby enabling bidirectional audio signal transmission with other audio transmission devices. Therefore, when the audio transmission device provided in this embodiment is applied to the float and the ground sound reinforcement system, the audio transmission device in the float can communicate with the audio transmission device in the ground sound reinforcement system through a short-range wireless transceiver module. Based on this connection, the audio signal in the float can be transmitted to the ground sound reinforcement system, and the audio signal in the ground sound reinforcement system can also be transmitted to the float. Thus, the audio transmission device in the float and the audio transmission device in the ground sound reinforcement system can perform bidirectional audio signal transmission, thereby enabling the audio signal on the float to be synchronized to the ground sound reinforcement system for sound reinforcement, or enabling the audio signal in the ground sound reinforcement system to be synchronized to the float, so that the audio transmission device and sound equipment on the float can amplify the audio signal in the ground sound reinforcement system. This avoids the situation in the prior art where the audio signal on the float can only be transmitted unidirectionally to the ground sound reinforcement system, resulting in unidirectional synchronous sound reinforcement, and improves the synchronization limitation of audio reinforcement in the float parade, achieving bidirectional synchronous sound reinforcement.

[0047] In this embodiment, the satellite navigation and positioning module 6 is used to determine the position coordinates of the audio transmission device. Specifically, the satellite navigation and positioning module 6 is connected to the main control processor 1 via an SPI communication interface to transmit the position coordinates to the main control processor 1. In one example, the satellite navigation and positioning module 6 can be a Beidou positioning module. The Beidou positioning module can receive Beidou satellite signals, calculate its own position coordinates (i.e., the position coordinates of the audio transmission device) using the triangulation principle, and transmit the determined position coordinates to the main control processor 1 via the SPI communication interface.

[0048] In this embodiment, the UWB positioning module 7 can achieve positioning and ranging based on ultra-wideband technology. In this embodiment, utilizing the ranging function provided by the UWB positioning module 7, the distance between the audio transmission device where the UWB positioning module 7 is located and other audio transmission devices can be determined. For example, when the audio transmission device provided in this embodiment is applied to both the float and the ground-based sound reinforcement system, the UWB positioning module 7 of the audio transmission device in the ground-based sound reinforcement system can be used to determine the distance between the float and the audio transmission device in the ground-based sound reinforcement system. It is understood that the UWB positioning module 7 provides both signal transmission and reception functions. In this scenario, the UWB positioning module 7 in the audio transmission device located on the float only uses the signal transmission function to transmit signals. The UWB positioning module 7 in the audio transmission device located in the ground-based sound reinforcement system uses the ranging function to receive the signal transmitted by the UWB positioning module 7 in the audio transmission device and perform distance measurement.

[0049] Furthermore, in this embodiment, the main control processor 1 is connected to the satellite navigation and positioning module 6 and the UWB positioning module 7 respectively. It can receive position coordinates and distance data, and can also transmit position coordinates and distance data with other audio transmission devices via the short-range wireless communication transceiver module 5. This enables the processor to perceive its own position and the position of other audio transmission devices. Moreover, this embodiment further improves the accuracy of position perception by using different aspects of position data provided by the satellite navigation and positioning module 6 and the UWB positioning module 7. Therefore, when the audio transmission device provided in this embodiment is applied to a float and a ground-based sound reinforcement system, the audio transmission device in the float can exchange position data with the audio transmission device in the ground-based sound reinforcement system. This allows each sound device in the ground-based sound reinforcement system to obtain the accurate position of the float, providing effective position data support for accurate sound reinforcement by each sound device in the ground-based sound reinforcement system, thereby providing strong technical support for improving the sound reinforcement effect.

[0050] Therefore, the audio transmission device provided in this embodiment can improve the synchronization limitation and amplification effect of audio amplification in float parades in practical applications.

[0051] In one specific embodiment, see Figure 2 The short-range wireless communication transceiver module 5 includes a 2.4G transmitting unit 51 and a 2.4G receiving unit 52;

[0052] The 2.4G transmitting unit 51 and the 2.4G receiving unit 52 are respectively connected to the main control processor 1.

[0053] It should be noted that the 2.4G transmitting unit 51 includes a signal transmitting circuit that operates in the 2.4GHz ISM band and is used to transmit the received audio signal to other audio transmission devices equipped with a 2.4G receiving unit 52.

[0054] The 2.4G receiving unit 52 includes a signal receiving circuit, operates in the 2.4GHz ISM band, and is used to receive audio signals transmitted by other audio transmission devices equipped with 2.4G transmitting units. The audio signal type can be digital.

[0055] In one example, both the signal transmitting circuit of the 2.4G transmitting unit 51 and the signal receiving circuit of the 2.4G receiving unit 52 include the nRF24Z1 chip.

[0056] In one specific embodiment, see Figure 2 The main control processor 1 is also connected to the lighting control interface 8.

[0057] It should be noted that the lighting control interface 8 in this embodiment is a DMX512 lighting control interface, which is a professional lighting control interface and can be used to connect to a professional lighting system. Therefore, based on the hardware architecture of the main control processor 1 connected to the lighting control interface 8 provided in this embodiment, audio signals and lighting can be linked in practical applications. For example, technicians can pre-configure a linkage control strategy so that, during actual operation, the main control processor 1 can control the lights to change according to the rhythm and melody of the audio signal, or control the lights to change based on the distance between the float and the ground sound reinforcement system.

[0058] It is understood that this embodiment provides a hardware architecture for connecting the main control processor 1 and the lighting control interface 8. Those skilled in the art can make corresponding applications based on the hardware architecture provided in this embodiment and their own needs. Their specific applications are not the content of the improvement of this utility model.

[0059] In one specific embodiment, see Figure 2 It also includes display module 9;

[0060] The display module 9 is connected to the main control processor 1.

[0061] It should be noted that the display module 9 includes a display screen, which has touch input functionality and can display functional UI.

[0062] In one specific embodiment, the main control processor 1 is an ARM processor.

[0063] In one specific embodiment, the audio processor 2 is a DSP processor.

[0064] It should be noted that the DSP processor has audio processing capabilities, enabling input selection, mixing, sound effects processing, and volume control for various audio inputs. Furthermore, in practical applications, the DSP processor can be used to analyze the rhythm and melody of audio signals, thereby providing audio data support for triggering synchronized lighting effects.

[0065] In one specific embodiment, see Figure 2 It also includes a network communication module 10;

[0066] The network communication module 10 is connected to the main control processor 1.

[0067] It should be noted that the network communication module 10 is used for communication connection with external devices. The main control processor 1 communicates with external devices through the network communication module 10 to realize data transmission with external devices.

[0068] In one specific embodiment, the network communication module 10 is a mobile communication module or a network interface module.

[0069] In one example, the network interface module can use a 100 Mbps Ethernet communication interface circuit.

[0070] In one specific embodiment, the mobile communication module is a 4G communication module.

[0071] Among them, the 4G communication module is the communication interface circuit for mobile 4G internet.

[0072] This utility model also provides an audio transmission system, which includes a system host, a loudspeaker, and at least two audio transmission devices;

[0073] Among them, the network communication module in the audio transmission device located on the mobile end is a mobile communication module; the network communication module in the audio transmission device located on the fixed end is a network interface module.

[0074] The audio transmission device located at the fixed end is connected to the system host through the network interface module, and is connected to the loudspeakers one by one;

[0075] The audio transmission device located on the mobile terminal is connected to the system host through the mobile communication module;

[0076] The audio transmission device located at the fixed end is communicatively connected to the audio transmission device located at the mobile end.

[0077] It's important to note that when the audio transmission device is used in a fixed location, the network communication module is a network interface module. When the audio transmission device is used in a mobile location, the network communication module is a mobile communication module. As you can understand, a fixed location refers to a device whose position remains constant, while a mobile location refers to a device whose position changes. Therefore, when used in a fixed location, the audio transmission device uses a network interface module to communicate with external devices, ensuring more stable data transmission. When used in a mobile location, the audio transmission device uses a mobile communication module to communicate with external devices, meeting the needs of mobile operation.

[0078] When applied to mobile devices, the audio transmission device can be mounted on a float or a similar mobile platform, or on any device requiring mobility. This embodiment uses application on a float as an example. As an example of application to fixed devices, the audio transmission device can be used in a ground-based sound reinforcement system for a float parade. The fixed audio transceiver can be fixedly installed on an outdoor pillar, wall, or outdoor waterproof box in the application environment. To improve the sound reinforcement effect, the distance between two fixed audio transceivers should not be less than a preset distance threshold. In a preferred example, the preset distance threshold is 50 meters. For ease of distinction, the audio transmission device applied to mobile devices will be referred to as a mobile audio transceiver, and the audio transmission device applied to fixed devices will be referred to as a fixed audio transceiver.

[0079] Specifically, the structures of the fixed audio transceiver and the mobile audio transceiver are as follows: Figure 4 and Figure 5 As shown. Figure 4 As shown, the fixed audio transceiver includes a main control processor, an audio processor, an audio input module, an audio decoding output module, a 2.4G transmitting unit, a 2.4G receiving unit, a satellite navigation and positioning module, a UWB positioning module, a network interface module, and a display module. Figure 5 As shown, the mobile audio transceiver includes a main control processor, an audio processor, an audio input module, an audio decoding output module, a 2.4G transmitting unit, a 2.4G receiving unit, a satellite navigation and positioning module, a UWB positioning module, a mobile communication module 102, and a display module. The mobile audio transceiver can communicate with the corresponding 2.4G transmitting and receiving units of a fixed audio transceiver via short 2.4G transmitting and receiving units.

[0080] In this embodiment, there are multiple fixed audio transceiver devices. It is understood that... Figure 3 The number of fixed audio transceivers in the example is merely an example and is not limited thereto.

[0081] like Figure 3 As shown, the system host is connected to the network interfaces of each fixed audio transceiver via a wired network. The audio decoding output modules of the fixed audio transceivers are connected to the amplifier speakers to transmit audio signals. The amplifier speakers are used to amplify the audio signals on-site. Each fixed audio transceiver is connected to a corresponding amplifier speaker.

[0082] The mobile audio transceiver connects to the fixed audio transceiver via a short-range wireless communication transceiver module and communicates with the system host via a mobile communication module. As an application example, in practical applications, a fixed audio transceiver can be configured to connect to the mobile audio transceiver based on the distance between the mobile and fixed audio transceivers; for example, the mobile audio transceiver can connect to the nearest fixed audio transceiver.

[0083] Specifically, the mobile audio transceiver can communicate with the 2.4G receiving unit of the fixed audio transceiver via its 2.4G transmitting unit, enabling the mobile audio transceiver to transmit audio signals to the fixed audio transceiver. Alternatively, the mobile audio transceiver can communicate with the 2.4G receiving unit of the fixed audio triggering device via its 2.4G receiving unit, enabling the fixed audio transceiver to transmit audio signals to the mobile audio transceiver. Therefore, based on the hardware architecture provided in this embodiment, bidirectional sound reinforcement is achieved.

[0084] Specifically, based on the satellite navigation positioning module, both mobile and fixed audio transceivers can determine their own position coordinates. The UWB positioning module in the mobile audio transceiver is used to transmit signals (i.e., only the signal transmission function of the UWB positioning module is used), while the UWB module in the fixed audio transceiver is used to receive the signals transmitted by the UWB positioning module of the mobile audio transceiver and to determine the distance between itself and the mobile audio transceiver (i.e., using the ranging function of the UWB positioning module). Based on the connection with the system host, the mobile and fixed audio transceivers can transmit the determined position coordinate data, and the fixed audio transceiver can transmit the distance data determined by the UWB positioning module to the system host. This provides two different types of positional awareness data, thus providing effective positional data support for accurate mobile following sound reinforcement, and thus providing strong technical support for improving sound reinforcement effects.

[0085] In one specific embodiment, the system can adopt an x86 architecture computer platform, be equipped with a Linux operating system, provide a hardware environment for the operation of the corresponding system control software, and provide a solid and reliable hardware foundation for the realization of the functions covered by the system, the realization of collaborative operation, and the stable and efficient operation of the system.

[0086] To facilitate the use of the audio transmission device and system provided by this utility model, the following will provide an exemplary description of how to use this utility model in conjunction with specific application scenarios.

[0087] (1) Setting up multi-level positioning. As can be seen from the aforementioned embodiments, this device is equipped with a UWB positioning module for ranging and a satellite navigation positioning module for determining position coordinates, and the position coordinates and distance data are uploaded to the system host in real time. Based on this, the positioning of the satellite navigation positioning module can be set as a large-scale 10-meter-level coarse positioning, and set as Level 1 positioning. UWB can be set as a precise ranging positioning within 1 meter, and set as Level 2 positioning. In further use, technicians can pre-configure the corresponding map software in the system host, so that the system host can calculate the radius distance between the mobile audio transceiver and the fixed audio transceiver based on the received position coordinates, using each fixed audio transceiver as a position reference, and record and save the distance data measured by the corresponding UWB positioning module, thereby realizing the management of the positioning data of each fixed audio transceiver and the mobile audio transceiver.

[0088] (2) As can be seen from the foregoing embodiments, both the fixed audio transceiver and the mobile audio transceiver are equipped with a 2.4G transmitting unit and a 2.4G receiving unit, thereby establishing two data transmission paths between the fixed audio transceiver and the mobile audio transceiver. The first path is transmitted by the fixed audio transceiver and received by the mobile audio transceiver; the second path is transmitted by the mobile audio transceiver and received by the fixed audio transceiver. Based on this, as a further application, the carrier frequency range can be set to 2.400-2.480GHz, using GFSK modulation and frequency hopping. As a further application, technicians can set a frequency combination and then use the system host to manage and allocate the transmitting and receiving frequencies of all mobile and fixed audio transceivers. As a further application, technicians can configure the wireless data protocol and frequency modulation mechanism in the system host. The wireless data protocol has data redundancy and CRC error correction mechanisms, as well as a frequency interference detection mechanism, so that when interference is detected at the currently used frequency point, the host can execute a frequency hopping mechanism to avoid interference.

[0089] (3) Application of mobile follow-up sound reinforcement. Based on the aforementioned embodiments, it is known that bidirectional audio signal transmission can be achieved between the mobile audio transceiver and the fixed audio transceiver. The first method involves synchronizing the microphone input and other audio signals from the mobile audio transceiver to the fixed audio transceiver. The second method involves synchronizing the microphone input and other audio signals from the fixed audio transceiver to the mobile audio transceiver. Furthermore, the system host stores the position coordinates and distance data of each fixed and mobile audio transceiver. Based on this, as a further application, technicians can combine the position coordinates, distance data, and bidirectional transmission function provided by this device to configure corresponding strategies in the host for follow-up sound reinforcement.

[0090] For example, for each fixed audio transceiver, a circle with a preset radius can be drawn based on the fixed audio transceiver's coordinates to form the sound reinforcement range. The condition for Level 1 positioning is set as follows: the distance between the mobile and fixed audio transceivers, calculated based on their coordinates, falls within the sound reinforcement range of the fixed audio transceiver. The condition for Level 2 positioning is set as follows: the distance measured by the UWB positioning module is less than a preset distance threshold. Furthermore, when both Level 1 and Level 2 positioning conditions are met, a communication connection is established between the mobile and fixed audio transceivers. If either condition is not met, the communication connection between the mobile and fixed audio transceivers is closed, and the lighting linkage is disabled.

[0091] As a further application, technicians can configure the transmission directions of mobile and fixed audio transceivers on the host computer according to the specific needs of the scenario. For example, in a theme park setting where microphone and audio signals from a float need to be played simultaneously on both the float and fixed ground-based speakers, the communication connection between the mobile and fixed audio transceivers can be established using the host computer. This involves activating the 2.4G wireless digital audio transmission function of the mobile transceiver and the 2.4G wireless digital audio reception function of the fixed transceiver. This allows the mobile transceiver to transmit audio signals to the fixed transceiver. Thus, the mobile transceiver can amplify its audio signal through the amplification equipment on the mobile platform, while the amplification speakers connected to the fixed transceiver can simultaneously play the mobile transceiver's audio signal, achieving a fusion of mobile and fixed audio signals. Furthermore, in this scenario, multiple fixed and mobile audio transceivers can be configured to amplify the signal synchronously.

[0092] When the application scenario involves a sound reinforcement system on a float in a theme park that needs to play the same audio as the fixed ground-based sound equipment, the communication connection between the mobile and fixed audio transceivers is established by activating the 2.4G wireless digital audio receiving function of the mobile transceiver and the 2.4G wireless digital audio transmitting function of the fixed audio transceiver. This allows the fixed audio transceiver to transmit audio signals to the mobile transceiver. In this way, the fixed audio transceiver can amplify the audio signal through the sound reinforcement equipment on the fixed platform, while the sound reinforcement equipment connected to the mobile audio transceiver can simultaneously play the audio signal from the fixed audio transceiver, achieving mobile and fixed integration.

[0093] (4) Application of public address system. As can be seen from the foregoing embodiments, the system host is communicatively connected to both the mobile audio transceiver and the fixed audio transceiver. Based on this, technicians can utilize the audio media library built into the system host and its streaming media push function to initiate broadcasts to the fixed audio transceiver and / or the mobile audio transceiver, thereby enabling individual broadcasts, arbitrary combinations of broadcasts, or all broadcasts from the mobile and fixed audio transceivers. Therefore, this system provides the broadcasting functions found in ordinary public address systems.

[0094] Based on the above, the audio transmission device and system provided by this utility model has at least one of the following advantages:

[0095] (1) Accurate location perception is achieved based on satellite navigation positioning and UWB ranging.

[0096] (2) It has strong anti-interference, low latency and high sound quality wireless digital audio transmission function.

[0097] (3) It provides the hardware foundation for realizing the linkage between audio signals and lighting;

[0098] (4) Provides hardware support for scenario fusion sound reinforcement with preset strategies.

[0099] The above provides a detailed description of an audio transmission device and system provided by this utility model. For those skilled in the art, based on the ideas of the embodiments of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An audio transmission device, characterized in that, include: Main control processor, audio processor, audio input module, audio decoding output module, short-range wireless communication transceiver module, satellite navigation and positioning module, UWB positioning module; The main control processor is connected to the audio processor, the audio input module, the audio decoding output module, the short-range wireless communication transceiver module, the satellite navigation and positioning module, and the UWB positioning module, respectively. The audio processor is connected to the audio input module and the audio decoding output module, respectively.

2. The apparatus according to claim 1, characterized in that, The short-range wireless communication transceiver module includes a 2.4G transmitting unit and a 2.4G receiving unit; The 2.4G transmitting unit and the 2.4G receiving unit are respectively connected to the main control processor.

3. The apparatus according to claim 1, characterized in that, The main control processor is also connected to the lighting control interface.

4. The apparatus according to claim 1, characterized in that, It also includes a display module; The display module is connected to the main control processor.

5. The apparatus according to claim 1, characterized in that, The main control processor is an ARM processor.

6. The apparatus according to claim 1, characterized in that, The audio processor is a DSP processor.

7. The apparatus according to any one of claims 1-6, characterized in that, It also includes a network communication module; The network communication module is connected to the main control processor.

8. The apparatus according to claim 7, characterized in that, The network communication module is a mobile communication module or a network interface module.

9. An audio transmission system, characterized in that, The system includes a system host, a sound amplifier, and at least two audio transmission devices as described in claim 8; Among them, the network communication module in the audio transmission device located on the mobile end is a mobile communication module; the network communication module in the audio transmission device located on the fixed end is a network interface module. The audio transmission device located at the fixed end is connected to the system host through the network interface module, and is connected to the loudspeakers one by one; The audio transmission device located on the mobile terminal is connected to the system host through the mobile communication module; The audio transmission device located at the fixed end is communicatively connected to the audio transmission device located at the mobile end.

10. The system according to claim 9, characterized in that, The mobile communication module is a 4G communication module.

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