CN113784257A - Multifunctional microphone - Google Patents

Multifunctional microphone Download PDF

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Publication number
CN113784257A
CN113784257A CN202111050309.8A CN202111050309A CN113784257A CN 113784257 A CN113784257 A CN 113784257A CN 202111050309 A CN202111050309 A CN 202111050309A CN 113784257 A CN113784257 A CN 113784257A
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resistor
capacitor
terminal
pin
chip
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CN113784257B (en
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邓刚
赵宏亮
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Shenzhen Changfeng Imaging Equipment Co ltd
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Shenzhen Changfeng Imaging Equipment Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

An embodiment of the present invention provides a multifunctional microphone, including: the MIC radio module is used for acquiring a sound signal of an environment or a user and converting the sound signal into an electroacoustic signal; the MCU control module is connected with the MIC radio module and is used for modulating and demodulating the electroacoustic signal and generating an analog audio signal; and the monitoring module is connected with the MCU control module and is used for monitoring the analog audio signal. The multifunctional microphone provided by the embodiment of the invention solves the problem that the microphone in the prior art cannot realize a real-time monitoring function through a monitoring function and an adjusting function, realizes that a user can judge how much the volume and tone quality are through the monitoring function, and then performs volume adjustment and gain adjustment according to actual requirements, thereby improving the user experience.

Description

Multifunctional microphone
Technical Field
The embodiment of the invention relates to a microphone technology, in particular to a multifunctional microphone.
Background
Under the wave of internet economy, the rise of the network live broadcast platform has injected fresh blood into the internet industry. In the updating and upgrading process of live broadcast equipment, functions of light source light supplement, camera shooting and microphone recording are often needed, but the function of real-time monitoring of the content spoken by a user is not taken into consideration.
Disclosure of Invention
The multifunctional microphone provided by the invention realizes that a user can judge the volume and tone quality of the user more intuitively through a monitoring function, and then performs volume adjustment and gain adjustment according to actual requirements, thereby improving the user experience.
An embodiment of the present invention provides a multifunctional microphone, including:
the MIC radio module is used for acquiring a sound signal of an environment or a user and converting the sound signal into an electroacoustic signal;
the MCU control module is connected with the MIC radio module and is used for modulating and demodulating the electroacoustic signal and generating an analog audio signal;
and the monitoring module is connected with the MCU control module and is used for monitoring the analog audio signal.
Optionally, the MIC radio module includes a microphone MIC, a capacitor C89, a resistor R52, a resistor R54, a capacitor C71, a capacitor C74, a bead B9, a capacitor C77, a connector CON3, and a capacitor C76, a first end of the resistor R52 is connected to the microphone MIC, a second end of the resistor R52 is connected to a first end of the resistor R54, a second end of the resistor R54 is connected to a first end of the capacitor C71, a first end of the capacitor C89 is grounded, a second end of the capacitor C89 is connected to a second end of the resistor R52, a first end of the capacitor C74 is grounded, a second end of the capacitor C74 is connected to a first end of the bead B9, a second end of the bead B9 is connected to a first end of the capacitor C77, a second end of the capacitor C77 is grounded, a first pin 1 of the connector CON3 is connected to a second end of the bead B9, a second pin of the connector CON3 is connected to a second end of the capacitor C76, the second terminal of the capacitor C76 is grounded, and the pin 3 and the pin 4 of the connector CON3 are connected to ground.
Optionally, the microphone further comprises a gain adjusting module, the gain adjusting module is connected with the MIC radio module and the MCU control module, and the gain adjusting module is configured to perform gain adjustment and amplification on the sound signal.
Optionally, the gain adjustment module includes a potentiometer VR1, a capacitor C65, a resistor R45, a capacitor C67, a resistor R46, a chip U8, a capacitor C66, a capacitor C68, a resistor R47, a capacitor C70, a resistor R70, a capacitor C70, and a resistor R70, where the pin 3 of the potentiometer VR 70 is connected to the first end of the capacitor C70, the second end of the capacitor C70 is connected to the first end of the resistor R70, the second end of the resistor R70 is connected to the first end of the chip U70, the first end of the capacitor C70 is connected to the first end of the resistor R70, the second end of the resistor R70 is connected to the first end of the resistor R70, the first end of the capacitor C70 is connected to the first end of the chip U365, the second end of the capacitor C66 is grounded, the first end of the capacitor C68 is connected to the 5 th pin of the chip U8, the second end of the capacitor C68 is grounded, the first end of the resistor R47 is connected to the 3 rd pin of the chip U8, the second end of the resistor R47 is grounded, the first end of the capacitor C70 is connected to the 3 rd pin of the chip U8, and the second end of the capacitor C70 is grounded.
Optionally, the MCU joystick module includes a chip U3, an LED indicator, a resistor R7, a resistor R5, a resistor R34, a resistor R36, a resistor R20, a resistor R21, a resistor R22, a resistor R10, a resistor R11, a resistor R25, a resistor R26, a resistor R27, a resistor R30, a resistor R31, a capacitor C86, a resistor R56, a resistor R57, a resistor R8, a resistor R55, and a chip U9, a first end of the resistor R7 is connected to the LED indicator, a second end of the resistor R7 is connected to an 11 th pin of the chip U3, a first end of the resistor R5 is connected to the LED indicator, a second end of the resistor R5 is connected to a 12 th pin of the chip U3, a first end of the resistor R34 is connected to a 13 th pin of the chip U3, a first end of the resistor R36 is connected to the first pin of the chip U36, and a first end of the resistor R36 is connected to the first pin of the chip U36, a first terminal of the resistor R22 is connected to the 25 th pin of the chip U3, a first terminal of the resistor R10 is connected to the 44 th pin of the chip U3, a first terminal of the resistor R11 is connected to the 43 th pin of the chip U3, a first terminal of the resistor R25 is connected to the 31 st pin of the chip U3, a first terminal of the resistor R26 is connected to the 30 th pin of the chip U3, a first terminal of the resistor R27 is connected to the 29 th pin of the chip U3, a first terminal of the resistor R30 is connected to the second terminal of the resistor R26, a first terminal of the resistor R31 is connected to the second terminal of the resistor R25, a first terminal of the capacitor C86 is grounded, a second terminal of the capacitor C86 is connected to the 8 th pin of the chip U9, a first terminal of the resistor R56 is connected to the second terminal of the resistor R25, a second terminal of the resistor R56 is connected to the second pin of the chip U9, the first end of the resistor R57 is connected to the second end of the resistor R26, the second end of the resistor R57 is connected to the 5 th pin of the chip U9, the first end of the resistor R8 is connected to the second end of the resistor R56, and the first end of the resistor R55 is connected to the second end of the resistor R57.
Optionally, the method further includes: and the volume adjusting module is connected with the MCU control module and the monitoring module, and is used for adjusting the volume of the analog signal input to the monitoring module.
Optionally, the volume adjustment module includes a potentiometer VR2, a resistor R58, and a capacitor C90, a first terminal of the resistor R58 is grounded, a second terminal of the resistor R58 is connected to the 3 rd pin of the potentiometer VR2, a first terminal of the capacitor C90 is connected to the 2 nd pin of the potentiometer VR2, and a second terminal of the capacitor C90 is grounded.
Optionally, the listening module includes a resistor R66, a capacitor C95, a magnetic bead B11, a capacitor C97, a connector J6, a resistor R65, a capacitor C94, a magnetic bead B12, a capacitor C96, and a magnetic bead B13, a first end of the resistor R66 is connected to a first end of the capacitor C95, a second end of the capacitor C95 is grounded, a first end of the magnetic bead B11 is connected to a first end of the resistor R66, a second end of the magnetic bead B11 is connected to the 1 st pin of the connector J6, a first end of the capacitor C97 is grounded, a second end of the capacitor C97 is connected to a second end of the magnetic bead B11, a first end of the resistor R65 is connected to a first end of the capacitor C94, a second end of the capacitor C94 is grounded, a first end of the capacitor B12 is connected to a first end of the resistor R65, a second end of the magnetic bead B12 is connected to the 2 second end of the connector J6, and the second end of the capacitor C96 is grounded, the second terminal of the capacitor C96 is connected to the second terminal of the magnetic bead B11, the first terminal of the magnetic bead B13 is grounded, and the second terminal of the magnetic bead B13 is connected to the 3 rd pin of the connector J6.
Optionally, the MCU control module is further connected to a camera module, the camera module is configured to input a video signal into the MCU control module, and the MCU control module is configured to fuse the video signal and the sound signal to generate an audio-video data stream.
Optionally, the MCU control module is further connected to an external computer device, the external computer device transmits the currently played audio signal to the monitoring module through the MCU control module, the multifunctional microphone further comprises a monitoring switch button connected to the MCU control module, and the monitoring switch button is used to control the MCU control module to switch the analog audio signal from the MIC radio module or the currently played audio signal from the external computer device to the monitoring module.
An embodiment of the present invention provides a multifunctional microphone, including: the MIC radio module is used for acquiring a sound signal of an environment or a user and converting the sound signal into an electroacoustic signal; the MCU control module is connected with the MIC radio module and is used for modulating and demodulating the electroacoustic signal and generating an analog audio signal; and the monitoring module is connected with the MCU control module and is used for monitoring the analog audio signal. The multifunctional microphone provided by the embodiment of the invention solves the problem that the microphone in the prior art cannot realize a real-time monitoring function through a monitoring function and an adjusting function, realizes that a user can judge how much the volume and tone quality are through the monitoring function, and then performs volume adjustment and gain adjustment according to actual requirements, thereby improving the user experience.
Drawings
Fig. 1 is a block flow diagram of a multifunctional microphone according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a MIC radio module according to a second embodiment of the present invention;
FIG. 3 is a circuit diagram of a gain adjustment module according to a second embodiment of the present invention;
FIG. 4 is a circuit diagram of an MCU control module according to a second embodiment of the present invention;
FIG. 5 is a circuit diagram of a volume adjustment module according to a second embodiment of the present invention;
fig. 6 is a circuit diagram of a snoop module according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the steps as a sequential process, many of the steps can be performed in parallel, concurrently or simultaneously. In addition, the order of the steps may be rearranged. A process may be terminated when its operations are completed, but may have additional steps not included in the figure. A process may correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.
Furthermore, the terms "first," "second," and the like may be used herein to describe various orientations, actions, steps, elements, or the like, but the orientations, actions, steps, or elements are not limited by these terms. These terms are only used to distinguish one direction, action, step or element from another direction, action, step or element. For example, a first module may be termed a second module, and, similarly, a second module may be termed a first module, without departing from the scope of the present application. The first module and the second module are both modules, but they are not the same module. The terms "first", "second", etc. are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Example one
Fig. 1 is a block flow diagram of a multifunctional microphone according to an embodiment of the present invention, where the multifunctional microphone according to the embodiment of the present invention is suitable for a user to monitor, and specifically, the multifunctional microphone according to the embodiment of the present invention includes: the microphone comprises an MIC radio module 1, a gain adjusting module 2, an MCU control module 3, a volume adjusting module 4 and a monitoring module 5.
The MIC radio module 1 is used for acquiring a sound signal of an environment or a user and converting the sound signal into an electroacoustic signal.
In this embodiment, the MIC radio module 1 is configured to pick up a sound signal, and specifically, the MIC radio module 1 may be implemented by using an electromagnetic principle, a method in which a diaphragm presses a material of a variable resistor, or a variable capacitor, so as to convert an external sound into an electroacoustic signal. Generally, the MIC radio module 1 generally acquires external sound through a microphone or other lines, and converts the external sound into an electric sound signal, i.e., an electrical signal.
The gain adjusting module 2 is connected with the MIC radio module 1 and the MCU control module 3, and the gain adjusting module 2 is used for performing gain adjustment and amplification on the electroacoustic signals.
In this embodiment, the gain adjusting module 2 receives the sound signal of the MIC radio module 1 to adjust the gain, so as to achieve the overload effect. Specifically, the gain adjustment module 2 performs amplification processing on the sound signal, and for a noisy signal, the quality of the signal is usually expressed by a signal-to-noise ratio SNR, which is defined as a ratio of the power S of the signal to the power N of the noise, where SNR is S/N, and a higher signal-to-noise ratio indicates that the noise power is lower, and the quality of the signal is better.
And the MCU control module 3 is connected with the MIC radio module 1 and is used for modulating and demodulating the sound signals and generating analog audio signals.
In this embodiment, the MCU control module 3 modulates and demodulates the sound signal through an MCU control Chip to generate an analog audio signal, specifically, an MCU (micro control Unit), also called a Single Chip Microcomputer (Single Chip Microcomputer) or a Single Chip Microcomputer, appropriately reduces the frequency and specification of a Central Processing Unit (CPU), and integrates peripheral interfaces such as a memory (memory), a counter (Timer), a USB, an a/D conversion, a UART, a PLC, a DMA, and even an LCD driving circuit on a Single Chip to form a Chip-level computer, which performs different combination control for different applications. In this embodiment, the MCU control module 3 is connected with the camera part, the microphone indicator light, the light supplement light and the camera LED light for indicating the working condition of the camera, thereby realizing the control effect of live broadcast by the user.
The volume adjusting module 4 is connected with the MCU control module 3 and the monitoring module 5, and the volume adjusting module 4 is used for adjusting the volume of the analog signal input to the monitoring module.
In this embodiment, the volume adjusting module 4 includes a volume adjusting knob, a volume switch and related circuits, and the volume adjusting module 4 adjusts volume and mute. Through cooperating with monitoring module 5, the user can judge how much of own volume size, tone quality are through the monitoring function more directly perceivedly, carries out volume control and gain control according to actual demand again.
The monitoring module 5 is connected with the MCU control module 3 and is used for monitoring the analog audio signal.
In this embodiment, the monitoring module 5 is mainly used for the user to monitor the sound acquired by the microphone, and the user can also adjust the sound volume in real time through the volume adjusting module 4, so as to meet the requirements of the user. Illustratively, the real-time live broadcast effect of the user can be realized by the camera shooting part and the monitoring module 5, and the user can correspondingly adjust the sound according to different environments.
An embodiment of the present invention provides a multifunctional microphone, including: the MIC radio module is used for acquiring a sound signal of an environment or a user and converting the sound signal into an electroacoustic signal; the MCU control module is connected with the MIC radio module and is used for modulating and demodulating the electroacoustic signal and generating an analog audio signal; and the monitoring module is connected with the MCU control module and is used for monitoring the analog audio signal. The multifunctional microphone provided by the embodiment of the invention solves the problem that the microphone in the prior art cannot realize a real-time monitoring function through a monitoring function and an adjusting function, realizes that a user can judge how much the volume and tone quality are through the monitoring function, and then performs volume adjustment and gain adjustment according to actual requirements, thereby improving the user experience.
Example two
The second embodiment is described in detail on the basis of the first embodiment, and the multifunctional microphone provided by the first embodiment of the present invention is suitable for a user to monitor, and specifically, the multifunctional microphone provided by the first embodiment of the present invention includes: the microphone comprises an MIC radio module 1, a gain adjusting module 2, an MCU control module 3, a volume adjusting module 4 and a monitoring module 5.
The MIC radio module 1 is used for acquiring a sound signal of an environment or a user and converting the sound signal into an electroacoustic signal.
Referring to fig. 2, fig. 2 is a circuit diagram of the MIC radio module 1 in this embodiment, the MIC radio module 1 includes a microphone MIC, a capacitor C89, a resistor R52, a resistor R54, a capacitor C71, a capacitor C74, a magnetic bead B9, a capacitor C77, a connector CON3, and a capacitor C76, a first end of the resistor R52 is connected to the microphone MIC, a second end of the resistor R52 is connected to a first end of the resistor R54, a second end of the resistor R54 is connected to a first end of the capacitor C71, a first end of the capacitor C89 is grounded, a second end of the capacitor C89 is connected to a second end of the resistor R52, a first end of the capacitor C74 is grounded, a second end of the capacitor C74 is connected to a first end of the magnetic bead B9, a second end of the magnetic bead B9 is connected to a first end of the capacitor C77, a second end of the capacitor C77 is grounded, a second end of the connector CON3 is connected to a second end of the magnetic bead B9B 34, the 2 nd pin of the connector CON3 is connected to the first terminal of the capacitor C76, the second terminal of the capacitor C76 is grounded, and the 3 rd pin and the 4 th pin of the connector CON3 are connected to ground.
In this embodiment, the MIC radio module 1 includes a microphone MIC, the microphone MIC is connected to a connector MIN CON3, a third pin and a fourth pin of CON3 are connected to an analog ground, a second pin of CON3 is connected to the analog ground through a capacitor C76, and a first pin of CON3 is connected to a power chip and a gain adjustment circuit.
The gain adjusting module 2 is connected with the MIC radio module 1 and the MCU control module 3, and the gain adjusting module 2 is used for performing gain adjustment and amplification on the electroacoustic signals.
Referring to fig. 3, fig. 3 is a circuit diagram of the gain adjustment module 2 in this embodiment, the gain adjustment module 2 includes a potentiometer VR1, a capacitor C65, a resistor R45, a capacitor C67, a resistor R46, a chip U8, a capacitor C66, a capacitor C68, a resistor R47, a capacitor C70, a resistor R48, a capacitor C69, and a resistor R49, a pin 3 of the potentiometer VR1 is connected to a first end of the capacitor C65, a second end of the capacitor C65 is connected to a first end of the resistor R45, a second end of the resistor R45 is connected to a pin 1 of the chip U8, a first end of the capacitor C64 is connected to a first end of the resistor R46, a second end of the capacitor C64 is connected to a second end of the resistor R46, a first end of the capacitor C69 is grounded, a second end of the capacitor C69 is connected to a first end of the resistor R48, a second end of the resistor R48 is connected to a second end of the resistor R49, the first end of the capacitor C66 is connected to the 5 th pin of the chip U8, the second end of the capacitor C66 is grounded, the first end of the capacitor C68 is connected to the 5 th pin of the chip U8, the second end of the capacitor C68 is grounded, the first end of the resistor R47 is connected to the 3 rd pin of the chip U8, the second end of the resistor R47 is grounded, the first end of the capacitor C70 is connected to the 3 rd pin of the chip U8, and the second end of the capacitor C70 is grounded.
In this embodiment, the gain adjustment module 2 includes a chip U8, a first pin of the chip U8 is connected to a third pin of a potentiometer VR1 through a resistor R45 and a capacitor C65, a fourth pin of the potentiometer VR1 is connected to an analog ground, a second pin of the potentiometer VR1 is connected to a pin AINRP of the chip U7, and a first pin and a fifth pin of the potentiometer VR1 are connected to the analog ground. The first pin of the chip U8 is further connected to the fourth pin through a capacitor C67, and is also connected to the fourth pin through a resistor R46, the fourth pin of the chip U8 is further connected to the first pin of the connector CON3 through a resistor R49, a capacitor C71, and a magnetic bead B9, the third pin of the chip U8 is connected to an analog ground through a resistor R47, is connected to the analog ground through a capacitor C70, is connected to the analog ground through a resistor R48 and a capacitor C69, is connected to the power chip through a resistor R48, and the fifth pin of the chip U8 is connected to the analog ground through a capacitor C68, is connected to the analog ground through a capacitor C66, and is connected to the power chip to supply power to the chip U8.
And the MCU control module 3 is connected with the MIC radio module 1 and is used for modulating and demodulating the sound signals and generating analog audio signals.
Referring to fig. 4, fig. 4 is a circuit diagram of the MCU control module 3 in this embodiment, the MCU control stick module includes a chip U3, an LED indicator, a resistor R7, a resistor R5, a resistor R34, a resistor R36, a resistor R20, a resistor R21, a capacitor C21, a resistor R21, and a chip U21, a first end of the resistor R21 is connected to the LED indicator, a second end of the resistor R21 is connected to a 12 th pin of the chip U21, a first end of the resistor R21 is connected to a 11 th pin of the chip U21, a first end of the resistor R21 is connected to the LED indicator, a second end of the resistor R21 is connected to a 12 th pin of the chip U21, a first end of the chip R21 is connected to a first pin of the chip U3618, a first terminal of the resistor R20 is connected to the 23 rd pin of the chip U3, a first terminal of the resistor R21 is connected to the 24 th pin of the chip U3, a first terminal of the resistor R22 is connected to the 25 th pin of the chip U3, a first terminal of the resistor R10 is connected to the 44 th pin of the chip U3, a first terminal of the resistor R11 is connected to the 43 th pin of the chip U3, a first terminal of the resistor R25 is connected to the 31 st pin of the chip U3, a first terminal of the resistor R26 is connected to the 30 th pin of the chip U3, a first terminal of the resistor R27 is connected to the 29 th pin of the chip U3, a first terminal of the resistor R30 is connected to the second terminal of the resistor R26, a first terminal of the resistor R31 is connected to the second terminal of the resistor R25, a first terminal of the capacitor C86 is grounded, a second terminal of the capacitor C86 is connected to the second pin of the chip U9, the first end of the resistor R56 is connected to the second end of the resistor R25, the second end of the resistor R56 is connected to the 6 th pin of the chip U9, the first end of the resistor R57 is connected to the second end of the resistor R26, the second end of the resistor R57 is connected to the 5 th pin of the chip U9, the first end of the resistor R8 is connected to the second end of the resistor R56, and the first end of the resistor R55 is connected to the second end of the resistor R57.
In this embodiment, the MCU control module includes a chip U3, pin GPI01 and pin GPI02 of chip U3 are connected to the microphone indicator light, pin GPI03/RXD of chip U3 is connected to the fourth pin of the volume adjusting circuit VR2 through a resistor R34, pin GPI04/TXD of chip U3 is connected to the second pin of the volume adjusting circuit VR2, pin GPI06, GPI07, GPI08 of chip U3 is connected to the fill light portion, pin MCLK, SCLK _ A, LRCLK _ A, SDIO _ A, GPI09, GPI of chip U3 is connected to the amplifying portion, pin GPI010 is connected to the digital ground through a resistor R25 and a switch K1, pin GPI09 and pin GPI010 of chip U3 are connected to the power supply chip U9, pin USBDP, USBDN of chip 3 is connected to the camera portion, pin ttng _ LOUT 1, pin riut 29 of chip 3 is connected to the monitor circuit electrical module.
The volume adjusting module 4 is connected with the MCU control module 3 and the monitoring module 5, and the volume adjusting module 4 is used for adjusting the volume of the analog signal input to the monitoring module.
Referring to fig. 5, fig. 5 is a circuit diagram of the volume adjusting module 4 in the present embodiment, the volume adjusting module 4 includes a potentiometer VR2, a resistor R58 and a capacitor C90, a first end of the resistor R58 is grounded, a second end of the resistor R58 is connected to the 3 rd pin of the potentiometer VR2, a first end of the capacitor C90 is connected to the 2 nd pin of the potentiometer VR2, and a second end of the capacitor C90 is grounded.
In this embodiment, the volume adjustment module 4 includes a potentiometer VR2 with buttons that can cause the microphone to enter MUTE mode. The first pin of the potentiometer VR2 is connected with a digital ground, the second pin of the potentiometer VR2 is connected with the MCU control circuit and is simultaneously connected with the digital ground through a capacitor C90, the third pin of the potentiometer VR2 is connected with the power supply chip through a resistor R58, the fourth pin of the potentiometer VR2 is connected with a pin GPIO3/RXD of the MCU control circuit U3, and the fifth pin of the potentiometer VR2 is connected with the digital ground.
The monitoring module 5 is connected with the MCU control module 3 and is used for monitoring the analog audio signal.
Referring to fig. 6, fig. 6 is a circuit diagram of the listening module 5 in this embodiment, the listening module 5 includes a resistor R66, a capacitor C95, a bead B11, a capacitor C97, a connector J6, a resistor R65, a capacitor C94, a bead B12, a capacitor C96, and a bead B13, a first end of the resistor R66 is connected to a first end of the capacitor C95, a second end of the capacitor C95 is connected to ground, a first end of the bead B11 is connected to a first end of the resistor R66, a second end of the bead B11 is connected to a 1 st pin of the connector J6, a first end of the capacitor C97 is connected to ground, a second end of the capacitor C97 is connected to a second end of the bead B97, a first end of the resistor R97 is connected to a first end of the capacitor C97, a second end of the bead B97 is connected to the second pin 97 of the connector J97, the first terminal of the capacitor C96 is grounded, the second terminal of the capacitor C96 is connected to the second terminal of the magnetic bead B11, the first terminal of the magnetic bead B13 is grounded, and the second terminal of the magnetic bead B13 is connected to the 3 rd pin of the connector J6.
In this embodiment, the monitoring module 5 performs filtering through capacitors C94, C95, C96, and C97, wherein the capacitance values of C94 and C95 are 680PF, and the capacitance values of C96 and C97 are 47PF, and filters out high-frequency noise waves and outputs the high-frequency noise waves through the audio interface J6. Specifically, the monitoring includes real-time monitoring and line playback monitoring, and the signal flow of the real-time monitoring is as follows: MIC radio module 1 → gain adjustment module 2 → MCU control module 3 → volume adjustment module 4 → monitor module 5. The signal flow direction of the line playback monitoring is MIC radio module 1 → gain adjustment module 2 → MCU control module 3 → external equipment (PC) → MCU control module 3 → volume adjustment module 4 → monitoring module 5. The monitoring module 5 comprises a connector J6, a first pin of the connector J6 is connected to a pin IIP _ OUT of the MCU control module 3 chip U3 through a bead B11 and a resistor R66, a second pin of the connector J6 is connected to a pin RING _ R of the MCU control module 3 chip U3 through a bead B12 and a resistor R65, a third pin of the connector J6 is connected to an analog ground through a bead B13, and a fourth pin of the connector J6 is connected to a fifth pin and is also connected to the analog ground.
In an alternative embodiment, the MCU control module 3 is further connected to a camera module, the camera module is configured to input a video signal into the MCU control module 3, and the MCU control module 3 is configured to fuse the video signal and the audio signal to generate an audio-video data stream.
In an alternative embodiment, the camera module may have a camera with a camera shooting or video recording function, a video signal acquired by the camera is fused with a sound signal in the MIC radio module 1 to generate an audio and video data stream, and the audio and video data stream may be monitored by the monitoring module 5, so that an effect of playing audio and video in real time is achieved. Illustratively, for example, when a user is performing live video broadcasting, the monitoring module 5 can acquire an audio and video effect in real time to know whether the sound is played normally or whether the sound is appropriate, so as to avoid the effect that the user cannot find the sound in real time without the sound in the live broadcasting process, and the user can adjust the live sound in real time to reach the appropriate sound.
In another alternative embodiment, the MCU control module 3 is further connected to an external computer device, the external computer device transmits the currently played audio signal to the monitoring module 5 through the MCU control module 3, the multifunctional microphone further comprises a monitoring switch button connected to the MCU control module 3, and the monitoring switch button is used to control the MCU control module 3 to switch the analog audio signal from the MIC radio module 1 or the currently played audio signal from the external computer device to be transmitted to the monitoring module 5.
In another alternative embodiment, the external computer device may be a PC terminal or a smart phone, etc., the external computer device may be connected to the MCU control module 3 through a wire or wirelessly, and the external device may process the audio signal through the MCU control module 3 and then send the processed audio signal to the monitoring module 5 for monitoring. Monitor and switch the button and can switch according to user's selection, the user can select to monitor the sound of self MIC radio module 1 or the sound of external computer equipment, exemplarily, the user is at the live in-process, watch the live of oneself through the cell-phone and carry out wireless bluetooth with cell-phone and MCU control module 3 and be connected, the cell-phone will be with the audio signal of the live broadcast of user through wireless bluetooth output to MCU control module 3 in handle the back and transmit to monitoring module 5, the user can acquire the sound of the live broadcast of oneself in real time through monitoring module 5, thereby the condition that no sound broadcast or sound size are improper has been avoided, user's experience has been promoted.
An embodiment of the present invention provides a multifunctional microphone, including: the MIC radio module is used for acquiring a sound signal of an environment or a user and converting the sound signal into an electroacoustic signal; the MCU control module is connected with the MIC radio module and is used for modulating and demodulating the electroacoustic signal and generating an analog audio signal; and the monitoring module is connected with the MCU control module and is used for monitoring the analog audio signal. The multifunctional microphone provided by the embodiment of the invention solves the problem that the microphone in the prior art cannot realize a real-time monitoring function through a monitoring function and an adjusting function, realizes that a user can judge how much the volume and tone quality are through the monitoring function, and then performs volume adjustment and gain adjustment according to actual requirements, thereby improving the user experience.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A multi-function microphone, comprising:
the MIC radio module is used for acquiring a sound signal of an environment or a user and converting the sound signal into an electroacoustic signal;
the MCU control module is connected with the MIC radio module and is used for modulating and demodulating the electroacoustic signal and generating an analog audio signal;
and the monitoring module is connected with the MCU control module and is used for monitoring the analog audio signal.
2. The multifunctional microphone according to claim 1, wherein the MIC sound reception module comprises a microphone MIC, a capacitor C89, a resistor R52, a resistor R54, a capacitor C71, a capacitor C74, a magnetic bead B9, a capacitor C77, a connector CON3, and a capacitor C76, wherein a first end of the resistor R52 is connected to the microphone MIC, a second end of the resistor R52 is connected to a first end of the resistor R54, a second end of the resistor R54 is connected to a first end of the capacitor C71, a first end of the capacitor C89 is connected to ground, a second end of the capacitor C89 is connected to a second end of the resistor R52, a first end of the capacitor C74 is connected to ground, a second end of the capacitor C74 is connected to a first end of the magnetic bead B9, a second end of the magnetic bead B9 is connected to a first end of the capacitor C77, a second end of the capacitor C77 is connected to ground, a second end of the magnetic bead B9 of the connector CON3 is connected to a second end of the magnetic bead B9, the 2 nd pin of the connector CON3 is connected to the first terminal of the capacitor C76, the second terminal of the capacitor C76 is grounded, and the 3 rd pin and the 4 th pin of the connector CON3 are connected to ground.
3. The multifunctional microphone according to claim 1, further comprising a gain adjusting module, wherein the gain adjusting module is connected to the MIC radio receiving module and the MCU control module, and the gain adjusting module is configured to perform gain adjustment and amplification on the sound signal.
4. The multifunctional microphone according to claim 3, wherein the gain adjustment module comprises a potentiometer VR1, a capacitor C65, a resistor R45, a capacitor C67, a resistor R46, a chip U8, a capacitor C66, a capacitor C68, a resistor R47, a capacitor C70, a resistor R48, a capacitor C69 and a resistor R49, wherein the pin 3 of the potentiometer VR1 is connected to the first terminal of the capacitor C65, the second terminal of the capacitor C65 is connected to the first terminal of the resistor R45, the second terminal of the resistor R45 is connected to the pin 1 of the chip U8, the first terminal of the capacitor C64 is connected to the first terminal of the resistor R46, the second terminal of the capacitor C64 is connected to the second terminal of the resistor R46, the first terminal of the capacitor C69 is grounded, the second terminal of the capacitor C69 is connected to the first terminal of the resistor R48, the second terminal of the resistor R48 is connected to the second terminal of the resistor R49, the first end of the capacitor C66 is connected to the 5 th pin of the chip U8, the second end of the capacitor C66 is grounded, the first end of the capacitor C68 is connected to the 5 th pin of the chip U8, the second end of the capacitor C68 is grounded, the first end of the resistor R47 is connected to the 3 rd pin of the chip U8, the second end of the resistor R47 is grounded, the first end of the capacitor C70 is connected to the 3 rd pin of the chip U8, and the second end of the capacitor C70 is grounded.
5. The multi-functional microphone according to claim 1, wherein the MCU control module comprises a chip U3, an LED indicator, a resistor R3, a capacitor C3, a resistor R3, and a chip U3, wherein a first end of the resistor R3 is connected to the LED indicator, a second end of the resistor R3 is connected to the 11 th pin of the chip U3, a first end of the resistor R3 is connected to the LED indicator, a second end of the resistor R3 is connected to the 12 th pin of the chip U3, a first end of the resistor R3 is connected to the first pin of the chip U3, and a first end of the resistor R3 is connected to the first pin of the chip U3623, a first terminal of the resistor R21 is connected to the 24 th pin of the chip U3, a first terminal of the resistor R22 is connected to the 25 th pin of the chip U3, a first terminal of the resistor R10 is connected to the 44 th pin of the chip U3, a first terminal of the resistor R11 is connected to the 43 th pin of the chip U3, a first terminal of the resistor R25 is connected to the 31 th pin of the chip U3, a first terminal of the resistor R26 is connected to the 30 th pin of the chip U3, a first terminal of the resistor R27 is connected to the 29 th pin of the chip U3, a first terminal of the resistor R30 is connected to the second terminal of the resistor R26, a first terminal of the resistor R31 is connected to the second terminal of the resistor R25, a first terminal of the capacitor C86 is grounded, a second terminal of the capacitor C86 is connected to the 8 th pin of the chip U9, a first terminal of the resistor R56 is connected to the second terminal of the resistor R25, the second end of the resistor R56 is connected to the 6 th pin of the chip U9, the first end of the resistor R57 is connected to the second end of the resistor R26, the second end of the resistor R57 is connected to the 5 th pin of the chip U9, the first end of the resistor R8 is connected to the second end of the resistor R56, and the first end of the resistor R55 is connected to the second end of the resistor R57.
6. The multi-functional microphone of claim 1, further comprising: and the volume adjusting module is connected with the MCU control module and the monitoring module, and is used for adjusting the volume of the analog signal input to the monitoring module.
7. The multifunctional microphone of claim 6, wherein the volume adjustment module comprises a potentiometer VR2, a resistor R58 and a capacitor C90, a first terminal of the resistor R58 is connected to ground, a second terminal of the resistor R58 is connected to pin 3 of the potentiometer VR2, a first terminal of the capacitor C90 is connected to pin 2 of the potentiometer VR2, and a second terminal of the capacitor C90 is connected to ground.
8. The multifunctional microphone according to claim 1, wherein the listening module comprises a resistor R66, a capacitor C95, a bead B11, a capacitor C97, a connector J6, a resistor R65, a capacitor C94, a bead B12, a capacitor C96, and a bead B13, a first end of the resistor R66 is connected to a first end of the capacitor C95, a second end of the capacitor C95 is grounded, a first end of the bead B11 is connected to a first end of the resistor R66, a second end of the bead B11 is connected to a 1 st pin of the connector J6, a first end of the capacitor C97 is grounded, a second end of the capacitor C97 is connected to a second end of the bead B11, a first end of the resistor R65 is connected to a first end of the capacitor C94, a second end of the capacitor C94 is grounded, a first end of the bead B12 is connected to a first end of the resistor R65, a second end of the bead B12 is connected to a second pin 5392 of the connector J6, the first terminal of the capacitor C96 is grounded, the second terminal of the capacitor C96 is connected to the second terminal of the magnetic bead B11, the first terminal of the magnetic bead B13 is grounded, and the second terminal of the magnetic bead B13 is connected to the 3 rd pin of the connector J6.
9. The multifunctional microphone according to claim 1, wherein the MCU control module is further connected to a camera module, the camera module is configured to input a video signal into the MCU control module, and the MCU control module is configured to fuse the video signal and the audio signal to generate an audio-video data stream.
10. The multifunctional microphone according to claim 1, wherein the MCU control module is further connected to an external computer device, the external computer device transmits a currently played audio signal to the monitoring module through the MCU control module, the multifunctional microphone further comprises a monitoring switch button connected to the MCU control module, and the monitoring switch button is configured to control the MCU control module to switch an analog audio signal from the MIC radio module or a currently played audio signal from the external computer device to be transmitted to the monitoring module.
CN202111050309.8A 2021-09-08 2021-09-08 Multifunctional microphone Active CN113784257B (en)

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