Conference microphone circuit
By replacing the traditional PHY module with a switch chip in the conference microphone circuit, data sharing on the same network port is achieved, solving the problem of circuit space occupation in the prior art, improving the data sharing mechanism, and enabling data sharing between the Dante data and the MCU module. This reduces the number of network ports, simplifies circuit space occupation, and improves the flexibility of use.
Patent Information
- Application Number
- CN202423324190.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The conference microphone circuit requires multiple network ports, resulting in a large footprint on the circuit.
By using a switch chip, the Dante module communicates with the switch, and Dante data and MCU data are processed. By replacing the traditional PHY module with a switch chip, data can be shared on the same network port.
The number of network ports has been reduced, simplifying the circuit space required and increasing the flexibility of use.
Smart Images
Figure CN223681170U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to audio equipment technical field especially relates to a conference microphone circuit. BACKGROUND
[0002] Conference microphone as the important component in conference audio system, bears the key role of audio input. Dante agreement as a kind of digital audio technology is widely used in conference audio system, it can be audio signal in Ethernet using TCP / IP mode transmission, therefore, generally set up in conference microphone circuit with the module relevant to Dante agreement.
[0003] Combination reference Figure 1 It shows a kind of conference microphone circuit with Dante agreement relevant module, in this circuit, Dante module 101 is connected with PHY module 102, and PHY module 102 is connected with a net mouth 103, this net mouth 103 is used to output the audio signal after being handled by Dante module 101, another net mouth 104 is also provided in this circuit and connected with Ethernet chip 105 in the circuit, and this Ethernet chip 105 is connected with MCU module 106, this net mouth 104 is used to transmit the user private data of circuit to carry out parameter configuration.
[0004] In the conference microphone circuit described above, on the basis of setting up Dante module, the number of required net mouth is more, and the circuit space occupation is larger. Utility model content
[0005] The utility model aims at providing a kind of conference microphone circuit, it can reduce the number of required net mouth, so that the space occupation of conference microphone circuit is less.
[0006] To realize the utility model purpose described above, the utility model provides the following technical solutions:
[0007] A kind of conference microphone circuit, the conference microphone circuit includes: Dante module, Switch module, MCU module and net mouth, the Switch module uses switch chip;
[0008] The Dante module is connected with the P5 port of the Switch module, and the Dante module is used to process audio signal based on Dante agreement;
[0009] The MCU module is connected with the P6 port of the Switch module, and the MCU module is used to manage the user private data corresponding to conference microphone circuit;
[0010] The network port is connected with the P3 port of the Switch module, and the network port is used to help the Switch module to interact with the external module of the conference microphone circuit.
[0011] In a possible implementation, the conference microphone circuit further comprises an audio acquisition module.
[0012] The audio acquisition module is connected with the Dante module, and the audio acquisition module is used to acquire audio and transmit an audio signal to the Dante module.
[0013] In a possible implementation, the Dante module is further connected with the serial management interface of the Switch module.
[0014] In a possible implementation, the network port is connected with an external switch.
[0015] In a possible implementation, the switch is connected with a configuration device.
[0016] And / or,
[0017] The switch is connected with other audio devices.
[0018] In a possible implementation, the MCU module adopts an ARM chip, and the chip is built-in with a MAC unit.
[0019] In a possible implementation, a port mode configuration circuit is connected with the P6 port of the Switch module peripherally, and the port mode configuration circuit is used to configure the P6 port as a PHY mode.
[0020] In a possible implementation, a voltage selection circuit is connected with the P6 port of the Switch module peripherally, and the voltage selection circuit is used to configure the port voltage of the P6 port as 3.3V.
[0021] In a possible implementation, a crystal unit is connected with the Switch module peripherally, the crystal unit is connected with the 34th pin and the 35th pin of the Switch module, and the crystal unit is used to provide a clock frequency for the Switch module.
[0022] In a possible implementation, the crystal unit comprises a crystal, a first capacitor and a second capacitor.
[0023] The first end and the second end of the crystal are connected with the 34th pin and the 35th pin of the Switch module respectively, and the third end and the fourth end of the crystal are grounded through the first capacitor and the second capacitor respectively.
[0024] Compared with the prior art, the utility model has the following beneficial effects:
[0025] In the conference microphone circuit, the Switch module adopts a switch chip, the Dante module is connected with the P5 port of the Switch module, the Dante module is used for processing audio signals based on the Dante protocol, the MCU module is connected with the P6 port of the Switch module, the MCU module is used for managing the user private data corresponding to the conference microphone circuit, the network port is connected with the P3 port of the Switch module, and the network port is used for helping the Switch module and the module outside the conference microphone to interact with data, the circuit adopts the Switch module to replace the PHY module in the traditional scheme, the MCU module and the Dante module are connected with the Switch module, the Switch module is also connected with a network port, so that the Dante data transmitted by the Dante module and the user private data processed by the MCU module side can share the same network port under the transfer of the Switch module, a new network port is not needed, it is more flexible, and circuit space occupation is less. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 It is a structural block diagram of a traditional conference microphone circuit provided in the related art;
[0027] Figure 2 It is a structural block diagram of a conference microphone circuit provided in the embodiment of the application;
[0028] Figure 3 It is a circuit schematic diagram of a Dante module provided in the embodiment of the application;
[0029] Figure 4 It is a circuit schematic diagram of a Switch module provided in the embodiment of the application;
[0030] Figure 5 It is Figure 4 It is a circuit schematic diagram corresponding to part A in the figure;
[0031] Figure 6 It is Figure 4 It is a circuit schematic diagram corresponding to part B in the figure;
[0032] Figure 7 It is Figure 4 It is a circuit schematic diagram corresponding to part C in the figure;
[0033] Figure 8 It is a circuit schematic diagram of an MCU module provided in the embodiment of the application.
[0034] Marked in the figure: 101-Dante module, 102-PHY module, 103-network port, 104-network port, 105-Ethernet chip, 106-MCU module, 107-audio acquisition module, 108-switch, 109-configuration device, 110-other audio device, 111-network port, 112-Switch module. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0036] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "vertical", "upper", "lower", "top", "side", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0037] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0038] In view of the problem that the conference microphone circuit in the related art needs to be provided with two-way network port and occupies a large circuit space, in the embodiment of the present application, a conference microphone circuit sharing the same network port is provided, which can reduce the number of required network ports and make the space occupation of the conference microphone circuit less.
[0039] The technical solutions provided by the embodiments of the present application are described below.
[0040] In combination with reference Figure 2 The conference microphone circuit provided by the embodiments of the present application includes a Dante module 101, a Switch module 112, an MCU module 106, and a network port 111. The Switch module 112 uses a switch chip.
[0041] The Dante module 101 is connected to the P5 port of the Switch module 112, and is configured to process audio signals based on the Dante protocol. The MCU module 106 is connected to the P6 port of the Switch module 112, and is configured to manage user private data corresponding to the conference microphone circuit. The network port 111 is connected to the P3 port of the Switch module 112, and is configured to help the Switch module 112 interact with external modules of the conference microphone circuit.
[0042] In the embodiments of the present application, the Switch module 112 is used to replace the PHY module in the traditional conference microphone circuit, and the MCU module 106 and the Dante module 101 are both connected to the Switch module 112, so that the Dante data transmitted by the Dante module 101 and the user private data processed by the MCU module 106 can share the same network port 111, without the need to add a new network port, which is more flexible and occupies less circuit space. In an example, the switch chip in the Switch module 112 can be an 88E6320 chip.
[0043] The Dante module 101 contains an audio processing chip supporting the Dante protocol. The Dante protocol is a modern high-performance digital media transmission system running on a standard IP network. That is, the protocol can support the transmission of real-time audio signals in Ethernet in the form of IP data structure, and provides a low-latency, high-precision, and low-cost solution for point-to-point audio system connection. In the embodiments of the present application, the Dante module 101 transmits Dante data to the P5 port of the Switch module 112 using the Dante protocol. Further, the Switch module 112 directly sends the data from the P5 port of the Dante module 101 to the network port 111 connected to the P3 port.
[0044] For example, Figure 3The circuit diagram of the Dante module 101 is shown, the L10-L11 pins, K8-K11 pins, and J9 pin of the Dante module 101 are used to output Dante data formed by the audio signals processed by the Dante module 101, and the Dante data can be connected to, for example, Figure 6 the P5 port of the Switch module 112, and specifically connected to the 41st, 42nd, 43rd, 46th, 48th, 49th, and 56th pins of the Switch module 112.
[0045] In a possible implementation, the Dante module 101 is also connected to a serial management interface of the Switch module 112. The serial management interface includes an MDC (Management Data Clock) interface and an MDIO (Management Data Input / Output Interface) interface. The serial management interface is a serial interface bus for management between a MAC and a PHY, which is composed of an MDC clock signal and an MDIO data line, and is used to realize state reading and setting of a PHY layer by a MAC controller and control physical layer negotiation and the like.
[0046] For example, as shown in Figure 3 the H9-H10 pins of the Dante module 101 are implemented as a serial management interface and connected to, for example, Figure 5 the 54th and 55th pins of the Switch module 112.
[0047] In a possible implementation, as shown in Figure 2 the conference microphone circuit further includes an audio acquisition module 107, the audio acquisition module 107 is connected to the Dante module 101, and the audio acquisition module 107 is used to perform audio acquisition and transmit an audio signal to the Dante module 101. In the conference microphone circuit, the audio acquisition module 107 is also provided, which can perform the functions of microphone output and signal processing, collect the sound emitted by the user, and output the collected sound to the Dante module 101 after converting the sound into an electrical signal.
[0048] For example, the audio acquisition module 107 can perform audio signal I2S input and be connected to, for example, Figure 3 the E1, F4, G3, G4, and G12 pins of the Dante module 101.
[0049] The MCU module 106 is a module for managing user private data of the conference microphone circuit, so that the conference microphone circuit can be configured by the module. In the embodiment of the present application, the network port 111 is connected with the P3 port of the Switch module 112, and the user private data can enter the Switch module 112 through the P3 port, and be forwarded to the P6 port by the Switch module 112 to configure the MCU module 106. The user private data can include: whether to mute the audio signal; the corresponding volume when the audio signal is output; the audio equalization (EQ) of the audio signal, and the like, which are only exemplarily described herein, and the specific content of the user private data is not limited in the present application.
[0050] As shown in the circuit diagram of the MCU module 106, Figure 8 the 15th pin, the 21st pin, the 23rd to 25th pins, the 33rd pin and the 36th pin of the MCU module 106 are connected with the P6 port (the 71st to 73rd pins, the 75th pin and the 77th to 79th pins) of the Switch module 112 as shown in Figure 5 so that the user private data is transmitted between the MCU module 106 and the Switch module 112.
[0051] In a possible implementation, the MCU module 106 adopts an ARM chip, and the MCU module 106 is built-in with a MAC unit. In order to directly connect the MCU module 106 with the P6 port of the Switch module 112, the MCU module 106 is provided with a MAC unit, so that the MCU module 106 can be directly connected with the Switch module 112 without the need of other circuit modules in the middle, thereby reducing the space occupation. Further, the connection mode of the MCU module 106 and the P6 port of the Switch module 112 can be an RMII (Reduced Media Independent Interface) interface form. In an example, the MCU module 106 can specifically adopt an STM32H563RIT6 chip.
[0052] Further, the P6 port of the Switch module 112 is connected with a port mode configuration circuit, and the port mode configuration circuit is used to configure the P6 port as a PHY mode.
[0053] For reference, Figure 5, the port mode configuration circuit can specifically include welding resistors R16 to R21, by selecting the welding resistors R16 to R21, the P6 port of the Switch can be configured as a PHY mode or a MAC mode. In the case that the MCU module 106 is built-in with a MAC unit, in order to directly connect the MCU module 106 with the P6 port of the Switch module 112, the welding R22 and R25 can be selected to configure the P6 port as a PHY mode.
[0054] Further, the P6 port of the Switch module 112 is peripherally connected with a voltage selection circuit, and the voltage selection circuit is used to configure the port voltage of the P6 port as 3.3V.
[0055] With reference to Figure 5 , the voltage selection circuit can specifically include welding resistors R22 to R25, by selecting the welding resistors R22 to R25, the P6 port voltage of the Switch module 112 can be configured as 1.8V, 2.5V or 3.3V. In order to directly connect the MCU module 106 with the P6 port of the Switch module 112, the welding R16, R18 and R21 can be selected to configure the port voltage of the P6 port as 3.3V.
[0056] The network port 111 is mainly used to realize the connection and data transmission between the conference microphone circuit and external devices or networks. Specifically, the network port 111 can be an RJ45 network port, and the RJ45 is a standardized physical interface specification, which is an 8-core connector mainly used for connecting Ethernet network devices.
[0057] As shown in Figure 7 , the network port 111 is connected to the 3rd pin, the 7th to 11th pins, the 19th pin, the 27th pin and the 33rd pin of the Switch module 112, so that the network port data is transmitted between the network port 111 and the Switch module 112.
[0058] In a possible implementation manner, as shown in Figure 2 , the network port 111 is connected with an external switch 108. The switch 108 can be further connected with other external devices, so that a plurality of external devices communicate with the conference microphone circuit inside through the same network port 111 under the setting of the switch 108.
[0059] Further, as shown in Figure 2 , the switch 108 is connected with a configuration device 109; and / or, the switch 108 is connected with other audio devices 110.
[0060] The configuration device 109 is an external device for configuring internal parameters of the conference microphone circuit. The configuration device 109 can configure the internal parameters of the conference microphone circuit by transmitting user private data to the MCU module 106. In other words, the user private data configured by the configuration device 109 can be transmitted to the network port 111 via the switch 108, and then transmitted to the MCU module 106 via the P6 port of the switch module 112.
[0061] The other audio device 110 is an external device with audio function and supports the Dante protocol. The other audio device 110 can be a conference microphone, a sound system, a conference host, or the like. In the case where the P5 port of the switch module 112 is connected to the Dante module 101 and the P3 port of the switch module 112 is directly connected to the network port 111, the network port 111 can access the audio data transmitted by the Dante module 101 via the switch module 112 to the switch 108, and then interact with the other audio device 110.
[0062] In a possible implementation, the switch module 112 is connected to a crystal unit. The crystal unit is connected to the 34th pin and the 35th pin of the switch module 112. The crystal unit is configured to provide a clock frequency for the switch module 112, so that the switch module 112 can realize synchronous control and operation coordination with other modules.
[0063] Further, the crystal unit includes a crystal, a first capacitor, and a second capacitor. The first end and the second end of the crystal are connected to the 34th pin and the 35th pin of the switch module 112, respectively. The third end and the fourth end of the crystal are connected to the ground via the first capacitor and the second capacitor, respectively.
[0064] For example, referring to FIG. 1, Figure 6 The switch module 112 further includes a crystal unit. The crystal unit includes a crystal Y2, a capacitor C23 (i.e., a first capacitor), and a capacitor C24 (i.e., a second capacitor). The two ends of the crystal Y2 are connected to the 34th pin and the 35th pin of the switch module 112, respectively, to provide a clock frequency required by a chip in the switch module 112. The two ends of the crystal Y2 are also connected to the ground via the capacitor C23 and the capacitor C24, respectively.
[0065] In conclusion, the technical scheme provided by the embodiments of the present application, in the conference microphone circuit, the Switch module adopts a switch chip, the Dante module is connected with the P5 port of the Switch module, the Dante module is used for processing audio signals based on the Dante protocol, the MCU module is connected with the P6 port of the Switch module, the MCU module is used for managing the user private data corresponding to the conference microphone circuit, the network port is connected with the P3 port of the Switch module, and the network port is used for helping the Switch module to interact with the modules outside the conference microphone, the circuit uses the Switch module to replace the PHY module in the traditional scheme, the MCU module and the Dante module are connected with the Switch module, the Switch module is also connected with a network port, so that the Dante data transmitted by the Dante module and the user private data processed by the MCU module can share the same network port under the transfer of the Switch module, without the need to increase a new network port, the use is more flexible, and the circuit space occupation is less.
[0066] All the optional technical solutions described above can be combined to form optional embodiments of the present application, that is, any number of embodiments can be combined to meet the needs of different application scenarios, which are all within the protection scope of the present application and will not be described one by one.
[0067] It should be noted that the above description is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A conference microphone circuit, characterized by The conference microphone circuit comprises a Dante module, a Switch module, an MCU module and a network port, and the Switch module adopts a switch chip; The Dante module is connected with a P5 port of the Switch module, and the Dante module is configured to process audio signals based on a Dante protocol; The MCU module is connected with a P6 port of the Switch module, and the MCU module is configured to manage user private data corresponding to the conference microphone circuit; The network port is connected with a P3 port of the Switch module, and the network port is configured to help the Switch module interact with external modules of the conference microphone circuit.
2. The conference microphone circuit of claim 1, wherein, The conference microphone circuit further comprises an audio acquisition module; The audio acquisition module is connected with the Dante module, and the audio acquisition module is configured to acquire audio and transmit audio signals to the Dante module.
3. The conference microphone circuit of claim 1, wherein The Dante module is further connected with a serial management interface of the Switch module.
4. The conference microphone circuit of claim 1, wherein The network port is connected with an external switch.
5. The conference microphone circuit of claim 4, wherein The switch is connected with a configuration device; and / or The switch is connected with other audio devices.
6. The conference microphone circuit of claim 1, wherein The MCU module adopts an ARM chip, and the chip is internally provided with a MAC unit.
7. The conference microphone circuit of claim 6, wherein A port mode configuration circuit is connected with the P6 port of the Switch module in periphery, and the port mode configuration circuit is configured to configure the P6 port as a PHY mode.
8. The conference microphone circuit of claim 6, wherein A voltage selection circuit is connected with the P6 port of the Switch module in periphery, and the voltage selection circuit is configured to configure a port voltage of the P6 port as 3.3V.
9. The conference microphone circuit of claim 1, wherein A crystal unit is connected with the Switch module in periphery, and the crystal unit is connected with a 34th pin and a 35th pin of the Switch module, and the crystal unit is configured to provide a clock frequency for the Switch module.
10. The conference microphone circuit of claim 9, wherein The crystal unit comprises a crystal oscillator, a first capacitor and a second capacitor; a first end and a second end of the crystal oscillator are connected with the 34th pin and the 35th pin of the Switch module, respectively, and a third end and a fourth end of the crystal oscillator are grounded through the first capacitor and the second capacitor, respectively.