On-site sound amplification device, wireless microphone and broadcasting system

Abstract

The utility model relates to the field of audio equipment, in particular to an on-site sound amplification device, a wireless microphone and a broadcasting system, and the on-site sound amplification device comprises a sound box main control core module, a DSP audio processor, a digital power amplification module, a loudspeaker module, a network interface, a UWB ranging module and an audio receiving module. The sound box main control core module is respectively connected with the network interface, the UWB distance measurement module, the audio receiving module and the DSP audio processor; the DSP audio processor is respectively connected with the audio receiving module and the digital power amplifier module; the digital power amplifier module is connected with the loudspeaker module; the audio receiving module is used for being in communication connection with an audio transmitting module of a wireless microphone; the UWB distance measurement module is used for being in communication connection with the UWB tag and is used for improving the situation that an existing sound amplification device is poor in sound amplification effect and does not have network broadcasting.

Description

Technical Field

[0001] This utility model relates to the field of audio equipment, and in particular to a live sound reinforcement device, a wireless microphone and a broadcasting system. Background Technology

[0002] The purpose of on-site sound reinforcement devices is to increase the propagation distance and range of sound, improve sound quality and clarity, facilitate information transmission, and enhance audience participation. They are widely used in various environments, such as music venues, conference rooms, educational facilities, cultural and historical explanations at tourist attractions, and on-site explanations and introductions in each exhibition hall of a museum.

[0003] When applied to venues such as cultural and tourist attractions, various exhibition halls, museums, and other similar locations, where guides often move around providing explanations, the existing sound reinforcement devices are typically portable lavalier megaphones. However, these devices have a small sound propagation range, low volume, and unclear sound, and they lack internet broadcasting capabilities. Utility Model Content

[0004] This utility model discloses an on-site sound reinforcement device, a wireless microphone, and a broadcasting system, which are used to improve the poor sound reinforcement effect of existing sound reinforcement devices and the lack of network broadcasting capabilities.

[0005] This utility model embodiment provides a field sound reinforcement device, including:

[0006] The speaker's main control core module, DSP audio processor, digital power amplifier module, speaker module, network interface, UWB ranging module, and audio receiving module are all included.

[0007] The speaker's main control core module is connected to the network interface, the UWB ranging module, the audio receiving module, and the DSP audio processor, respectively.

[0008] The DSP audio processor is connected to the audio receiving module and the digital power amplifier module respectively;

[0009] The digital power amplifier module is connected to the speaker module;

[0010] The audio receiving module is used to communicate with the audio transmitting module of the wireless microphone;

[0011] The UWB ranging module is used for communication connection with the UWB tag.

[0012] Optionally, the number of audio receiving modules is at least one;

[0013] Each of the audio receiving modules is connected to a corresponding audio transmitting module of the wireless microphone.

[0014] Optionally, the speaker's main control core module uses an SSD212 chip.

[0015] Optionally, the DSP audio processor uses the BP1048 chip.

[0016] Optionally, the network interface is an RJ45 interface.

[0017] Optionally, the UWB ranging module is a ULM1-MK-IPX module.

[0018] Optionally, both the first receiving unit and the second receiving unit employ a UHF true diversity wireless microphone receiving module.

[0019] Optionally, the speaker's main control core module is connected to the DSP audio processor via a first UART interface and an SPI data line, and to the UWB ranging module via a second UART interface, and to the audio receiving module via an I2C interface.

[0020] This utility model also provides a wireless microphone, including an audio transmitting module and a UWB tag;

[0021] The audio transmitting module is communicatively connected to the audio receiving module in the on-site sound reinforcement device as described above.

[0022] The UWB tag is communicatively connected to the UWB ranging module in the on-site sound reinforcement device as described above.

[0023] This utility model also provides a broadcasting system, characterized in that it includes: at least one on-site sound reinforcement device as described above;

[0024] The on-site sound reinforcement device is connected to a networked broadcast server and a wireless microphone.

[0025] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:

[0026] This utility model embodiment provides a field sound reinforcement device, including: a speaker main control core module, a DSP audio processor, a digital power amplifier module, a speaker module, a network interface, a UWB ranging module, and an audio receiving module; the speaker main control core module is connected to the network interface, the UWB ranging module, the audio receiving module, and the DSP audio processor respectively; the DSP audio processor is connected to the audio receiving module and the digital power amplifier module respectively; the digital power amplifier module is connected to the speaker module; the audio receiving module is used for communication connection with the audio transmitting module of a wireless microphone; the UWB ranging module is used for communication connection with a UWB tag.

[0027] In this invention, the audio receiving module receives the audio signal transmitted by the audio transmitting module and transmits it to the DSP audio processor. The DSP audio processor, digital power amplifier module, and speaker module are connected to amplify and output the audio signal, achieving on-site sound reinforcement and effectively improving the sound reinforcement effect. The speaker main control core module is connected to a network interface, allowing for connection to a networked broadcast server for network broadcasting in practical applications. Therefore, the on-site sound reinforcement device provided by this invention improves the sound reinforcement effect and provides network broadcasting functionality, avoiding the problems of poor sound reinforcement and lack of network broadcasting capabilities found in existing sound reinforcement devices.

[0028] Furthermore, when using this invention, the user carries a UWB tag and a wireless microphone. Therefore, based on the communication connection between the UWB tag and the UWB ranging module, the distance between the user and the on-site sound reinforcement device can be measured. Moreover, based on the hardware architecture of the connection between the UWB ranging module and the speaker main control core module, and the connection between the speaker main control core module and the DSP audio processor, hardware architecture support can be provided for realizing mobile zone on-site sound reinforcement, thereby further improving the sound reinforcement effect. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is a schematic diagram of the structure of a field sound reinforcement device provided in an embodiment of this utility model;

[0031] Figure 2 This is another structural schematic diagram of a field sound reinforcement device provided in an embodiment of this utility model;

[0032] Figure 3 This is a schematic diagram illustrating a scenario where the on-site sound reinforcement device provided in this embodiment of the present invention is applied to on-site sound reinforcement in a mobile zone. Detailed Implementation

[0033] In existing technologies, most venues requiring on-site sound reinforcement are fixed locations such as concert halls and conference rooms. For these venues, adding a sound reinforcement system directly on-site is usually sufficient. However, with my country's rapid economic development and the accumulation of its historical and cultural heritage, more and more cultural and tourist attractions, exhibition halls, museums, and other similar venues have been built across the country. These venues require on-site sound reinforcement devices for explanation and introduction in order to disseminate culture. For example, when tour guides lead tour groups, they will explain each attraction as they walk, and the sound reinforcement equipment carried by the guides is usually a portable megaphone.

[0034] However, commonly used on-site sound reinforcement systems, such as the portable megaphones mentioned above, suffer from limited sound propagation range, low volume, and unclear sound in actual use. Fixed-location on-site sound reinforcement equipment not only requires a large amount of equipment but also struggles to achieve mobile, zoned sound reinforcement effects. Furthermore, since neither of these types of on-site sound reinforcement equipment can function as a broadcasting system, a new networked broadcasting system must be installed at the application site to meet broadcasting needs such as playing background music or issuing fire alarms.

[0035] In view of this, the present invention provides a live sound reinforcement device, a wireless microphone, and a broadcasting system that supports live sound reinforcement and broadcasting functions, thereby improving the poor sound reinforcement effect and lack of network broadcasting capabilities of existing sound reinforcement devices. Furthermore, it provides hardware architecture support for realizing mobile zone live sound reinforcement and sound effect adjustment functions, facilitating the implementation of mobile zone live sound reinforcement and sound effect adjustment.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] Please see Figure 1 One embodiment of the on-site sound reinforcement device provided in this utility model includes: a speaker main control core module 1, a DSP audio processor 2, a digital power amplifier module 3, a speaker module 4, a network interface 5, a UWB ranging module 6, and an audio receiving module 7; the speaker main control core module 1 is connected to the network interface 5, the UWB ranging module 6, the audio receiving module 7, and the DSP audio processor 2 respectively; the DSP audio processor 2 is connected to the audio receiving module 7 and the digital power amplifier module 3 respectively; the digital power amplifier module 3 is connected to the speaker module 4; the audio receiving module 7 is used for communication connection with the audio transmitting module of the wireless microphone; the UWB ranging module 6 is used for communication connection with the UWB tag.

[0040] In this embodiment, the audio transmitting module and the audio receiving module 7 are communicatively connected, and the audio receiving module 7 can be used to receive audio signals sent by the audio transmitting module. The DSP audio processor 2 is equipped with an ADC interface, which is connected to the audio receiving module 7 to receive audio signals and perform A / D and D / A conversions on the audio signals. The DSP audio processor 2 is also equipped with a DAC interface, which is connected to the digital power amplifier module 3 to transmit audio signals. The digital power amplifier module 3 amplifies the audio signals and outputs them to the speaker module 4 to achieve on-site sound reinforcement. Furthermore, by employing DSP audio processing and the digital power amplifier module 3 to convert and amplify the audio signals, the sound reinforcement effect can be effectively improved.

[0041] The speaker's main control core module 1 is connected to the audio receiving module 7, and can be used to set, modify, and save the receiving frequency of the audio receiving module 7.

[0042] The speaker's main control core module 1 has a built-in network card chip and is connected to the network interface 5. It can communicate with other devices through the network interface 5 and receive audio streams transmitted by other devices.

[0043] The audio main control core module is connected to the data receiving end of the DSP audio processor 2. Therefore, based on the connection between the speaker main control core module 1 and the DSP audio processor 2, when there is a broadcasting requirement, the audio stream to be broadcast can be transmitted to the speaker main control core module 1 via network communication. After transmission through the speaker main control core module 1, the DSP audio processor 2, and the digital power amplifier module 3, it is finally played by the speaker module 4, thus meeting the requirements of network broadcasting. It is understood that the DSP audio processor 2 has internal devices for decoding audio signals, which can decode and output the audio stream transmitted by the speaker main control core module 1.

[0044] UWB tags can be integrated into wireless microphones, becoming part of the microphone, or they can be separated into tag structures and carried by the user. The UWB ranging module 6 communicates with the UWB tag and can be used to measure the distance between the user using the wireless microphone and the on-site sound reinforcement equipment. Based on the connection between the UWB ranging module 6 and the speaker main control module, the measured distance can be transmitted to the speaker main control core module 1, realizing the monitoring of the distance between the user and the on-site sound reinforcement equipment.

[0045] The speaker's main control core module 1 is also connected to the control terminal of the DSP audio processor 2, which can be used to start or stop the DSP audio processor 2, causing the DSP audio processor 2 to start or stop receiving audio signals.

[0046] Mobile zone sound reinforcement refers to an application scenario where multiple sound reinforcement devices are set up. Each device's reinforcement range can be considered a zone. When a user enters a zone, the corresponding device in that zone amplifies the sound. As mentioned above, the structure based on the UWB ranging module 6 and the UWB tag communication connection provided in this device can monitor the user's location. The hardware structure based on the connection between the audio main control core module and the control terminal of the DSP audio processor 2 can start and stop the DSP audio processor 2. Therefore, in practical applications, the distance measured by the UWB ranging module 6 provided in this embodiment helps determine whether a user has entered or left the sound reinforcement range. When a user enters or leaves the sound reinforcement range, the hardware structure provided in this embodiment can start and stop the DSP processor to activate or deactivate the sound reinforcement. Therefore, the hardware structure of the sound reinforcement device provided by this invention can assist in realizing mobile zone sound reinforcement and provide hardware support for mobile zone sound reinforcement.

[0047] In this embodiment, the audio receiving module 7 receives the audio signal transmitted by the audio transmitting module and transmits it to the DSP audio processor 2. The DSP audio processor 2, digital power amplifier module 3, and speaker module 4 are connected to amplify and output the audio signal, achieving the purpose of on-site sound reinforcement and effectively improving the sound reinforcement effect. The speaker main control core module 1 is connected to the network interface 5, so in practical applications, it can be connected to a networked broadcast server through the network interface 5 to realize network broadcasting. Therefore, the on-site sound reinforcement device provided by this utility model improves the sound reinforcement effect and provides network broadcasting function, avoiding the situation of poor sound reinforcement effect and lack of network broadcasting in existing sound reinforcement devices, saving costs and on-site setup workload.

[0048] Furthermore, when using this embodiment, the user carries a UWB tag and a wireless microphone. Therefore, based on the communication connection between the UWB tag and the UWB ranging module 6, the distance between the user and the on-site sound reinforcement device can be measured. Moreover, based on the hardware architecture of the UWB ranging module 6 being connected to the speaker main control core module 1 and the speaker main control core module 1 being connected to the DSP audio processor 2, hardware support can be provided for realizing mobile zone on-site sound reinforcement, thereby further improving the sound reinforcement effect.

[0049] Therefore, the on-site sound reinforcement device provided in this embodiment solves the problems of poor sound reinforcement effect and lack of network broadcasting function of existing sound reinforcement devices, improves the sound reinforcement effect, provides network broadcasting function, and realizes the measurement of the distance between the user and the on-site sound reinforcement device, providing hardware architecture support for realizing mobile zone on-site sound reinforcement.

[0050] In a specific embodiment, such as Figure 2 As shown, the speaker's main control core module uses an SSD212 chip.

[0051] In one specific embodiment, the speaker's main control core module is connected to the DSP audio processor via the first UART interface and the SPI data line, respectively, and is connected to the UWB ranging module via the second UART interface, and to the audio receiving module via the I2C interface.

[0052] In this embodiment, the speaker's main control core module uses an SSD212 as its core chip. The core chip has a built-in network card for TCP / IP network communication, enabling the transmission of network broadcast audio streams. The core chip connects to the control terminal of the DSP audio processor via a first UART interface (UART1), which can be used to transmit start or stop signals to activate or deactivate the DSP audio processor. It also connects to the data receiver of the DSP audio processor via an SPI data line to transmit network broadcast audio streams to the DSP audio processor. Furthermore, the core chip connects to the audio receiving module via an I2C interface for communication with the audio receiving module.

[0053] In one specific embodiment, the number of audio receiving modules is at least one;

[0054] Each of the audio receiving modules is connected to a corresponding audio transmitting module of the wireless microphone.

[0055] In one specific embodiment, the audio receiving module employs a UHF true diversity wireless microphone receiving module.

[0056] It should be noted that the number of audio receiving modules is the same as the number of wireless microphones, and each module is connected to a corresponding audio transmitting module in the wireless microphone. In this embodiment, the number of audio receiving modules is at least one, and the specific number can be set according to actual needs.

[0057] In one example, such as Figure 2 As shown, the number of audio receiving modules can be set to two, namely UHF true diversity wireless microphone receiving module 1 and UHF true diversity wireless microphone receiving module 2. The number of wireless microphones is also set to two accordingly. UHF true diversity wireless microphone receiving module 1 is communicatively connected to the audio transmitting module of one of the wireless microphones to receive the analog audio signal transmitted by the audio transmitting module. UHF true diversity wireless microphone receiving module 1 is communicatively connected to the audio transmitting module of the other wireless microphone to receive the analog audio signal transmitted by the audio transmitting module.

[0058] UHF true diversity wireless microphone receiver module 1 is connected to the ADC1 interface of the DSP audio processor for transmitting analog audio signals to the DSP audio processor. UHF true diversity wireless microphone receiver module 2 is connected to the ADC2 interface of the DSP audio processor for transmitting analog audio signals to the DSP audio processor.

[0059] The speaker's main control core module is connected to UHF true diversity wireless microphone receiver module 1 and UHF true diversity wireless microphone receiver module 2 via I2C interface. In practical applications, the speaker's main control core module can be used to modify, set, and save the receiving frequencies of UHF true diversity wireless microphone receiver module 1 and UHF true diversity wireless microphone receiver module 2.

[0060] Therefore, in this example, by setting up two UHF true diversity wireless microphone receiver modules and wireless microphones, two microphone inputs are achieved, which facilitates two narrators to provide sound reinforcement for their presentations in practical applications.

[0061] In one specific embodiment, the UHF true diversity wireless microphone receiver module includes a KT0656 chip and a KT0650 chip. The LINE_IO interface of the KT0656 chip is connected to the LINE_IO interface of the KT0650 chip, and the AOUTP and AOUTN interfaces of the KT0656 chip are respectively connected to the ADC interface of the DSP audio processor.

[0062] It should be noted that the KT0656 chip is a highly integrated chip for UHF audio reception, capable of receiving and processing audio signals and providing high-quality audio output. The KT0650 chip is a diversity auxiliary chip used in UHF wireless receivers, which can be used to improve the quality and stability of the received signal.

[0063] In this embodiment, the KT0656 chip and the KT0650 chip can work together to process the audio signal transmitted by the wireless microphone, thereby realizing the reception and output of the audio signal.

[0064] In one specific embodiment, the DSP audio processor uses the BP1048 chip.

[0065] It should be noted that this embodiment uses the BP1048 chip as a DSP audio processor, which can decode network broadcast audio streams and output analog audio signals. It supports sound effect parameter adjustment functions and can acquire audio signals transmitted by the audio receiving module through an ADC, and output the converted audio signals through a DAC. Specifically, the speaker's main control core module is connected to the BP1048 chip through a UART1 interface. Based on this connection, it can be used to start and stop the BP1048 chip, communicate, and adjust sound effect parameters.

[0066] In one specific embodiment, the UWB ranging module uses the ULM1-MK-IPX module.

[0067] It should be noted that the ULM1-MK-IPX module can wirelessly communicate with UWB tags and provide ranging functionality. Its ranging principle is based on the time difference between transmitting and receiving communication data with the UWB tag, which allows calculation of the distance between the module and the tag. The ULM1-MK-IPX module can transmit the measured distance to the speaker's main control module via UART2.

[0068] In practical applications, the ranging function provided by the ULM1-MK-IPX module can determine the distance between the user and the on-site sound reinforcement device, thus providing technical support for user positioning.

[0069] In one specific embodiment, the network interface uses an RJ45 interface.

[0070] This utility model also provides a wireless microphone, including an audio transmitting module and a UWB tag;

[0071] The audio transmitting module is communicatively connected to the audio receiving module in the above-mentioned on-site sound reinforcement device;

[0072] The UWB tag communicates with the UWB ranging module in the above-mentioned on-site sound reinforcement device.

[0073] It should be noted that in the wireless microphone provided in this embodiment, the audio transmitting module is communicatively connected to the audio receiving module in the on-site sound reinforcement device, and is used to transmit the user's audio signal to the audio receiving module.

[0074] The UWB tag communicates with the UWB ranging module to provide technical support for measuring the distance between the user and the on-site sound reinforcement device.

[0075] This utility model also provides a broadcasting system, including:

[0076] At least one on-site sound reinforcement device;

[0077] The on-site sound reinforcement equipment is connected to a networked broadcast server and wireless microphones.

[0078] The on-site sound reinforcement system is connected to a networked broadcast server to receive and play network broadcast audio streams, meeting the needs of broadcasting.

[0079] Specifically, based on the aforementioned embodiments, the on-site sound reinforcement device includes a speaker main control core module for network communication, a DSP audio processor for decoding and outputting audio streams, and a power amplifier module and a speaker module for sound reinforcement. Therefore, in practical applications, the networked broadcast server can initiate a broadcast to the on-site sound reinforcement device via a network link, transmitting the broadcast audio stream to the speaker main control core module. The speaker main control core module then transmits the broadcast audio stream to the DSP audio processor for decoding and output via an SPI data line, thus realizing the broadcast function.

[0080] Therefore, the broadcasting system provided in this embodiment solves the problems of poor sound reinforcement effect and lack of network broadcasting function of existing sound reinforcement devices, improves the sound reinforcement effect, provides network broadcasting function, and realizes the measurement of distance between users and on-site sound reinforcement devices, providing hardware architecture support for realizing mobile zone on-site sound reinforcement.

[0081] To facilitate the use of the device and broadcasting 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.

[0082] 1) Applied to scenarios where on-site sound reinforcement is started and stopped based on the reinforcement distance. As mentioned above, the on-site sound reinforcement device provided by this utility model is equipped with a UWB ranging module for measuring the distance between the user and the on-site sound reinforcement device. The wireless microphone is equipped with an audio transmission module. The user carries a UWB tag. Therefore, based on the hardware structure provided by this device, the distance range between the user and the on-site sound reinforcement equipment can be preset as the sound reinforcement range. During use, the user uses a wireless microphone to give a presentation and carries a UWB tag. When the distance between the user and the on-site sound reinforcement equipment, as measured in real time, falls within the sound reinforcement range, the speaker's main control core module communicates with the DSP audio processor via UART1, opening the audio path from the audio receiving module to the DSP audio processor. This allows the DSP audio processor to start receiving the audio signal transmitted from the wireless microphone to the audio receiving module, and after conversion, outputs it to the digital power amplifier module via DAC. After power amplification by the digital power amplifier module, it is played by the speaker module. Conversely, when the measured distance between the user and the on-site sound reinforcement equipment does not fall within the sound reinforcement range, the speaker's main control core module shuts down the DSP audio processor, stopping the sound reinforcement. This achieves the effect of starting and stopping the on-site sound reinforcement based on the sound reinforcement distance.

[0083] 2) Applications include mobile zone on-site sound reinforcement. For example... Figure 3 As shown, N on-site sound reinforcement devices are set up in a distributed configuration, each connected to a networked broadcast server via a network cable. The sound reinforcement range of each device can be considered as a region. Based on this, the regions in the diagram can be divided into Region 1, Region 2, ..., Region N, where the value of N can be set according to actual sound reinforcement needs. Based on the UWB ranging module used to determine the distance between the user and the on-site sound reinforcement device, as well as the audio transmitting module and UWB tags that communicate with the device, it can be configured to activate the on-site sound reinforcement device in a region when a user enters it, and deactivate the device in the current region and activate the device in the next region when the user moves from the current region to the next.

[0084] Taking a user entering Zone 1 and moving from Zone 1 to Zone 2 as an example, the sound reinforcement range is pre-set in the on-site sound reinforcement devices in both Zone 1 and Zone 2. When a user enters Zone 1 carrying a wireless microphone, the UWB ranging module in the on-site sound reinforcement device of Zone 1 communicates with the UWB tag to measure the distance between the user and the on-site sound reinforcement device. Once it is determined that the distance is within the sound reinforcement range of Zone 1, the speaker main control core module in the on-site sound reinforcement device activates the DSP audio processor, enabling the DSP audio processor to receive the audio signal transmitted by the wireless microphone for on-site sound reinforcement. When a user carrying a wireless microphone moves from Zone 1 to Zone 2, based on the distance between the user and the on-site sound reinforcement equipment in Zone 1, it can be determined that the user is outside the sound reinforcement range of Zone 1. Conversely, based on the distance between the user and the on-site sound reinforcement equipment in Zone 2, it can be determined that the user is within the sound reinforcement range of Zone 2. Therefore, by disabling the signal acquisition function of the DSP audio processor in the on-site sound reinforcement equipment in Zone 1, the DSP audio processor can stop receiving audio signals from the wireless microphone. Conversely, by activating the DSP audio processor in the on-site sound reinforcement equipment in Zone 2, the DSP audio processor can enable its DAC acquisition function to receive the audio signals transmitted from the wireless microphone, thus providing on-site sound reinforcement. Similarly, when multiple on-site sound reinforcement devices are set up, based on the above principle, the user only needs to carry a wireless microphone to achieve mobile zone-based on-site sound reinforcement.

[0085] As can be seen from the above, the on-site sound reinforcement device provided by this utility model provides strong hardware architecture support for realizing on-site sound reinforcement in mobile zones, and helps to assist in realizing on-site sound reinforcement in mobile zones.

[0086] 3) To further facilitate user operation of the on-site sound reinforcement device provided by this utility model, technicians can design an interactive interface based on the hardware architecture of the device, combined with existing speaker network communication knowledge and existing web page access technology. For example, a slider can be provided on the interface to adjust the receiving frequency of the audio receiving module, allowing users to set the receiving frequency. After the user sets the frequency, the interface can transmit the set frequency to the speaker's main control core module, enabling the main control core module to adjust and save the receiving frequency of the audio receiving module via the I2C interface based on the received parameters. Another example: the user can input a sound reinforcement distance range on the interface, which can then transmit this range to the speaker's main control core module, thus enabling the input of the sound reinforcement distance range. For example, users can set the decibel level of different frequency signals on the interface to adjust the sound effects of the audio signal. After the settings are completed, the interface transmits the sound effect parameters set by the user to the speaker's main control core module. The speaker's main control core module transmits the parameters to the DSP audio processor through the UART1 interface. The DSP audio processor then modifies the sound effect parameters of the audio signal to the received sound effect parameters, thereby adjusting the sound amplification effect.

[0087] The above provides a detailed description of the on-site sound reinforcement device, wireless microphone, and broadcasting 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. A live sound reinforcement device, characterized in that, include: The speaker's main control core module, DSP audio processor, digital power amplifier module, speaker module, network interface, UWB ranging module, and audio receiving module are all included. The speaker's main control core module is connected to the network interface, the UWB ranging module, the audio receiving module, and the DSP audio processor, respectively. The DSP audio processor is connected to the audio receiving module and the digital power amplifier module respectively; The digital power amplifier module is connected to the speaker module; The audio receiving module is used to communicate with the audio transmitting module of the wireless microphone; The UWB ranging module is used for communication connection with the UWB tag.

2. The apparatus according to claim 1, characterized in that, The number of audio receiving modules is at least one; Each of the audio receiving modules is connected to a corresponding audio transmitting module of the wireless microphone.

3. The apparatus according to claim 1, characterized in that, The speaker's main control core module uses an SSD212 chip.

4. The apparatus according to claim 1, characterized in that, The DSP audio processor uses the BP1048 chip.

5. The apparatus according to claim 1, characterized in that, The network interface uses an RJ45 interface.

6. The apparatus according to claim 1, characterized in that, The UWB ranging module uses the ULM1-MK-IPX module.

7. The apparatus according to claim 2, characterized in that, The audio receiving module uses a UHF true diversity wireless microphone receiving module.

8. The apparatus according to claim 3, characterized in that, The speaker's main control core module is connected to the DSP audio processor via a first UART interface and an SPI data line, and is connected to the UWB ranging module via a second UART interface, and to the audio receiving module via an I2C interface.

9. A wireless microphone, characterized in that, Includes audio transmission module and UWB tag; The audio transmitting module is communicatively connected to the audio receiving module in the on-site sound reinforcement device as described in any one of claims 1-8; The UWB tag is communicatively connected to the UWB ranging module in the field sound reinforcement device as described in any one of claims 1-8.

10. A broadcasting system, characterized in that, include: At least one on-site sound reinforcement device as described in any one of claims 1-8; The on-site sound reinforcement device is connected to a networked broadcast server and a wireless microphone.

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