CN113784257B - Multifunctional microphone - Google Patents

Multifunctional microphone Download PDF

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Publication number
CN113784257B
CN113784257B CN202111050309.8A CN202111050309A CN113784257B CN 113784257 B CN113784257 B CN 113784257B CN 202111050309 A CN202111050309 A CN 202111050309A CN 113784257 B CN113784257 B CN 113784257B
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resistor
capacitor
module
pin
chip
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CN113784257A (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

The embodiment of the invention provides a multifunctional microphone, which comprises: the MIC radio module is used for acquiring sound signals of the environment or a user and converting the sound signals into electroacoustic signals; the MCU control module is connected with the MIC radio module and 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 used for monitoring the analog audio signal. According to the multifunctional microphone provided by the embodiment of the invention, through the monitoring function and the adjusting function, the problem that the microphone cannot realize real-time monitoring in the prior art is solved, the effect that a user can more intuitively judge how the volume and the tone quality of the user are through the monitoring function is realized, and then the volume adjustment and the gain adjustment are carried out according to actual requirements, so that the user experience is improved.

Description

Multifunctional microphone
Technical Field
The embodiment of the invention relates to microphone technology, in particular to a multifunctional microphone.
Background
Under the wave of internet economy, the rise of a network live platform injects fresh blood into the internet industry. In the process of updating live broadcast equipment, the functions of light source light filling, camera shooting and microphone recording are often needed, but the function of monitoring the content spoken by a user in real time is often not paid attention to.
Disclosure of Invention
The invention provides the multifunctional microphone, so that a user can more intuitively judge how the volume and the tone quality of the user are through the monitoring function, and then the volume adjustment and the gain adjustment are carried out according to actual requirements, thereby improving the experience of the user.
The embodiment of the invention provides a multifunctional microphone, which comprises:
the MIC radio module is used for acquiring sound signals of the environment or a user and converting the sound signals into electroacoustic signals;
the MCU control module is connected with the MIC radio module and 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 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 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 the first end of the resistor R54, a second end of the resistor R54 is connected to the 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 the 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 the first end of the magnetic bead B9, a second end of the magnetic bead B9 is connected to the first end of the capacitor C77, a second end of the capacitor C77 is grounded, a first pin of the connector CON3 is connected to the first end of the magnetic bead B9, a second end of the connector CON3 is connected to the second end of the capacitor C3 is connected to the first end of the capacitor C4, and a first pin of the capacitor C3 is grounded.
Optionally, the device further comprises a gain adjusting module, wherein the gain adjusting module is connected with the MIC radio module and the MCU control module, and the gain adjusting module is used for performing gain adjustment and amplification on the sound signals.
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 R48, a capacitor C69, and a resistor R49, where a first 3 pin 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 first 1 pin 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 first end of the resistor R49, a first end of the capacitor C66 is connected to a first end of the resistor R45, a first end of the capacitor C64 is connected to a first end of the chip U8 is connected to a first end of the resistor C8, a first end of the capacitor C68 is connected to the first end of the resistor C8, a first end of the capacitor C68 is grounded, and a second end of the capacitor C68 is connected to the resistor C8 is grounded.
Optionally, the MCU control lever module comprises a chip U3, an LED indicator light, 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, wherein a first end of the resistor R7 is connected to the LED indicator light, a second end of the resistor R7 is connected to the 11 th pin of the chip U3, a first end of the resistor R5 is connected to the LED indicator light, a second end of the resistor R5 is connected to the 12 th pin of the chip U3, a first end of the resistor R34 is connected to the 13 th pin of the chip U3, a first end of the resistor R36 is connected to the 18 th pin of the chip U3, a first end of the resistor R20 is connected to the 23 th pin of the chip U3, the first end of the resistor R21 is connected to the 24 th pin of the chip U3, the first end of the resistor R22 is connected to the 25 th pin of the chip U3, the first end of the resistor R10 is connected to the 44 th pin of the chip U3, the first end of the resistor R11 is connected to the 43 rd pin of the chip U3, the first end of the resistor R25 is connected to the 31 st pin of the chip U3, the first end of the resistor R26 is connected to the 30 th pin of the chip U3, the first end of the resistor R27 is connected to the 29 th pin of the chip U3, the first end of the resistor R30 is connected to the second end of the resistor R26, the first end of the resistor R31 is connected to the second end of the resistor R25, the first end of the capacitor C86 is grounded, the second end of the capacitor C86 is connected to the 8 th 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.
Optionally, the method further comprises: 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, where a first end of the resistor R58 is grounded, a second end of the resistor R58 is connected to a 3 rd pin of the potentiometer VR2, a first end of the capacitor C90 is connected to a 2 nd pin of the potentiometer VR2, and a second end of the capacitor C90 is grounded.
Optionally, the monitoring 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, wherein 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 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 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 magnetic bead B12 is connected to a first end of the resistor R65, a second end of the magnetic bead B12 is connected to a first end of the connector J6, a first end of the capacitor C96 is grounded, a first end of the capacitor C13 is connected to a second end of the magnetic bead B13 is grounded, and a first end of the magnetic bead B96 is connected to a first end of the magnetic bead B13.
Optionally, the MCU control module is further connected with a camera module, where 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 with 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 audio signal currently played to the monitoring module through the MCU control module, the multifunctional microphone further includes a monitoring switch key connected to the MCU control module, and the monitoring switch key is used for controlling the MCU control module to switch between transmitting the analog audio signal from the MIC radio module or the audio signal currently played from the external computer device to the monitoring module.
The embodiment of the invention provides a multifunctional microphone, which comprises: the MIC radio module is used for acquiring sound signals of the environment or a user and converting the sound signals into electroacoustic signals; the MCU control module is connected with the MIC radio module and 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 used for monitoring the analog audio signal. According to the multifunctional microphone provided by the embodiment of the invention, through the monitoring function and the adjusting function, the problem that the microphone cannot realize real-time monitoring in the prior art is solved, the effect that a user can more intuitively judge how the volume and the tone quality of the user are through the monitoring function is realized, and then the volume adjustment and the gain adjustment are carried out according to actual requirements, so that the user experience is improved.
Drawings
Fig. 1 is a block flow chart of a multifunctional microphone according to a first 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 invention;
FIG. 4 is a circuit diagram of an MCU control module in a second embodiment of the invention;
FIG. 5 is a circuit diagram of a sound volume adjusting module according to a second embodiment of the present invention;
fig. 6 is a circuit diagram of a listening module in a second embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart depicts steps as a sequential process, many of the steps may be implemented in parallel, concurrently, or with other steps. Furthermore, the order of the steps may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Furthermore, the terms "first," "second," and the like, may be used herein to describe various directions, acts, steps, or elements, etc., but these directions, acts, 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 referred to as a second module, and similarly, a second module may be referred to as a first module, without departing from the scope of the present application. Both the first module and the second module are modules, but they are not the same module. The terms "first," "second," and the like, are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
Example 1
Fig. 1 is a block flow chart of a multifunctional microphone according to a first embodiment of the present invention, where the multifunctional microphone according to the first embodiment of the present invention is suitable for a user to monitor, and specifically, the multifunctional microphone according to the first embodiment of the present invention includes: MIC radio module 1, gain adjustment module 2, MCU control module 3, volume adjustment module 4 and monitor module 5.
The MIC radio module 1 is used for acquiring sound signals of the environment or a user and converting the sound signals into electroacoustic signals.
In the present embodiment, the MIC sound pickup module 1 is used for picking up sound signals, and in particular, the MIC sound pickup module 1 may be implemented by electromagnetic principle, a material of a variable resistor pressed by a diaphragm, or a variable capacitor, so as to convert external sound into an electroacoustic signal. In general, the MIC radio module 1 generally obtains external sound through a microphone or other circuits, and converts the external sound into an electroacoustic 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 carrying out 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 amplifies a sound signal, and for a signal with noise, the signal quality is generally represented by a signal-to-noise ratio SNR, where the signal-to-noise ratio is defined as the ratio of the power S of the signal to the power N of the noise, and the higher the signal-to-noise ratio, the lower the noise power, and the better the signal quality.
The MCU control module 3 is connected with the MIC radio module 1 and is used for modulating and demodulating the sound signal and generating an analog audio signal.
In this embodiment, the MCU control module 3 modulates and demodulates the sound signal through the MCU control chip to generate an analog audio signal, specifically, the MCU (micro control unit, microcontroller Unit), also called a single-chip microcomputer (Single Chip Microcomputer) or a single-chip microcomputer, appropriately reduces the frequency and specification of the central processing unit (Central Process Unit; CPU), and integrates peripheral interfaces such as memory (Timer), USB, a/D conversion, UART, PLC, DMA, and the like, and even the LCD driving circuit on a single chip to form a chip-level computer for performing different combination control for different application occasions. In this embodiment, MCU control module 3 is connected with part, microphone pilot lamp, light filling lamp and the LED lamp of making a video recording for instruct the camera behavior, thereby realized the user and carried out the control effect of living broadcast.
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 adjustment module 4 includes a volume adjustment knob, a volume switch, and related circuitry, and the volume adjustment module 4 adjusts the volume level and silence. Through cooperation with the monitoring module 5, the user can more intuitively judge how the volume and the tone quality of the user are through the monitoring function, and then volume adjustment and gain adjustment are carried out according to actual requirements.
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 a user to monitor the sound acquired by the microphone, and the user can also adjust in real time through the volume adjusting module 4, so as to meet the requirement of the user. By way of example, the camera part also monitors the module 5, so that the effect of live broadcasting of the user can be realized, and the user can correspondingly adjust the size of the sound according to different environments.
The embodiment of the invention provides a multifunctional microphone, which comprises: the MIC radio module is used for acquiring sound signals of the environment or a user and converting the sound signals into electroacoustic signals; the MCU control module is connected with the MIC radio module and 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 used for monitoring the analog audio signal. According to the multifunctional microphone provided by the embodiment of the invention, through the monitoring function and the adjusting function, the problem that the microphone cannot realize real-time monitoring in the prior art is solved, the effect that a user can more intuitively judge how the volume and the tone quality of the user are through the monitoring function is realized, and then the volume adjustment and the gain adjustment are carried out according to actual requirements, so that the user experience is improved.
Example two
The second embodiment is described in detail on the basis of the first embodiment, and the multifunctional microphone provided by the embodiment of the invention is suitable for a situation that a user monitors, and specifically, the multifunctional microphone provided by the first embodiment of the invention includes: MIC radio module 1, gain adjustment module 2, MCU control module 3, volume adjustment module 4 and monitor module 5.
The MIC radio module 1 is used for acquiring sound signals of the environment or a user and converting the sound signals into electroacoustic signals.
Referring to fig. 2, fig. 2 is a circuit diagram of a MIC radio module 1 in this embodiment, where 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, the first end of the resistor R52 is connected to the microphone MIC, the second end of the resistor R52 is connected to the first end of the resistor R54, the second end of the resistor R54 is connected to the first end of the capacitor C71, the first end of the capacitor C89 is grounded, the second end of the capacitor C89 is connected to the second end of the resistor R52, the first end of the capacitor C74 is grounded, the second end of the capacitor C74 is connected to the first end of the magnetic bead B9, the second end of the magnetic bead B9 is connected to the first end of the capacitor C77, the second end of the capacitor C77 is grounded, the first end of the connector CON3 is connected to the first end of the connector C3, the second end of the capacitor C3 is connected to the second end of the capacitor C3 is grounded, and the second end of the capacitor C3 is connected to the second end of the capacitor C76 is grounded.
In this embodiment, the MIC radio module 1 includes a microphone MIC, where the microphone MIC is connected to the connector MIN CON3, and a third pin and a fourth pin of the CON3 are connected to each other, and simultaneously connected to an analog ground, a second pin of the CON3 is connected to the analog ground through a capacitor C76, and a first pin of the CON3 is connected to a power chip and a gain adjusting 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 carrying out gain adjustment and amplification on the electroacoustic signals.
Referring to fig. 3, fig. 3 is a circuit diagram of a 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, where a 3 rd pin 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 first 1 pin of the chip U8, a first end of the capacitor C64 is connected to a first end of the resistor R46, a first 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 first end of the capacitor C6 is connected to the first end of the capacitor C8, a first end of the capacitor C68 is connected to the first end of the capacitor C8 is grounded, and a second end of the capacitor C70 is connected to the first end of the capacitor C8.
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 the 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 each other, and are connected to the analog ground. The first pin of the chip U8 is also connected with the fourth pin through a capacitor C67 and is connected with the fourth pin through a resistor R46, the fourth pin of the chip U8 is also connected with 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 grounded through a resistor R47 and is grounded through a capacitor C70 and is simulated, and is grounded through a resistor R48 and a capacitor C69 and is connected with a power chip through a resistor R48, the fifth pin of the chip U8 is connected with the simulated ground through a capacitor C68 and is connected with the simulated ground through a capacitor C66 and is connected with the power chip, and power is supplied to the chip U8.
The MCU control module 3 is connected with the MIC radio module 1 and is used for modulating and demodulating the sound signal and generating an analog audio signal.
Referring to fig. 4, fig. 4 is a circuit diagram of the MCU control module 3 in this embodiment, where the MCU control lever 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 the 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 the 12 th pin of the chip U3, a first end of the resistor R34 is connected to the 13 th pin of the chip U3, a first end of the resistor R36 is connected to the 18 th pin of the chip U3, the first end of the resistor R20 is connected to the 23 rd pin of the chip U3, the first end of the resistor R21 is connected to the 24 th pin of the chip U3, the first end of the resistor R22 is connected to the 25 th pin of the chip U3, the first end of the resistor R10 is connected to the 44 th pin of the chip U3, the first end of the resistor R11 is connected to the 43 rd pin of the chip U3, the first end of the resistor R25 is connected to the 31 st pin of the chip U3, the first end of the resistor R26 is connected to the 30 th pin of the chip U3, the first end of the resistor R27 is connected to the 29 th pin of the chip U3, the first end of the resistor R30 is connected to the second end of the resistor R26, the first end of the resistor R31 is connected to the second end of the resistor R25, the first end of the capacitor C86 is grounded, the second end of the capacitor C86 is connected to the 8 th 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, the pin GPI01 and the pin GPI02 of the chip U3 are connected to the microphone indicator lamp, the pin GPI03/RXD of the chip U3 is connected to the fourth pin of the volume adjusting circuit VR2 through the resistor R34, the pin GPI04/TXD of the chip U3 is connected to the second pin of the volume adjusting circuit VR2, the pins GPI06, GPI07, GPI08 of the chip U3 are connected to the light supplementing part, the pins MCLK, sclk_ A, LRCLK _ A, SDIO _ A, GPI09, GPI010 of the chip U3 are connected to the amplifying part, while the pin GPI010 is connected to the digital ground through the resistor R25, the switch K1, while the pin GPI09 and the pin GPI010 of the chip U3 are connected to the power chip U9, the pins USBDP, USBDN of the chip U3 are connected to the image capturing part, the pins ttp_lout, and the pin RING1_r of the chip U3 are connected to the listening module 5 circuit.
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 a 3 rd pin of the potentiometer VR2, a first end of the capacitor C90 is connected to a 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 a button that can place the microphone in MUTE mode. The first pin of the potentiometer VR2 is grounded, the second pin of the potentiometer VR2 is connected with the MCU control circuit, meanwhile, the second pin of the potentiometer VR2 is connected with digital ground through a capacitor C90, the third pin of the potentiometer VR2 is connected with a power chip through a resistor R58, the fourth pin of the potentiometer VR2 is connected with the GPIO3/RXD pin of the MCU control circuit U3, and the fifth pin of the potentiometer VR2 is connected with 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 monitoring module 5 in this embodiment, where the monitoring 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, the first end of the resistor R66 is connected to the first end of the capacitor C95, the second end of the capacitor C95 is grounded, the first end of the bead B11 is connected to the first end of the resistor R66, the second end of the bead B11 is connected to the 1 st pin of the connector J6, the first end of the capacitor C97 is grounded, the second end of the capacitor C97 is connected to the second end of the bead B11, the first end of the resistor R65 is connected to the first end of the capacitor C94, the second end of the capacitor C94 is grounded, the first end of the bead B12 is connected to the first end of the resistor R65, the second end of the bead B12 is connected to the second end of the capacitor J6, the second end of the bead B12 is connected to the second end of the bead C96, and the second end of the bead B13 is connected to the second end of the bead B6.
In this embodiment, the monitoring module 5 filters through the capacitors C94, C95, C96, and C97, the capacitance values of C94, C95 are 680PF, the capacitance values of C96, and C97 are 47PF, and the filtered high-frequency clutter is output through the audio interface J6. Specifically, the monitoring includes real-time monitoring and line playback monitoring, and the signal flow direction of the real-time monitoring is: MIC radio module 1- & gt gain adjustment module 2- & gt MCU control module 3- & gt volume adjustment module 4- & gt monitoring module 5. The signal flow direction of 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 and 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 chip U3 of the MCU control module 3 through a magnetic bead B11 and a resistor R66, a second pin of the connector J6 is connected to a pin RING_R of the chip U3 of the MCU control module 3 through a magnetic bead B12 and a resistor R65, a third pin of the connector J6 is connected to an analog ground through a magnetic bead B13, and a fourth pin of the connector J6 is connected to a fifth pin and is connected to the analog ground.
In an alternative embodiment, the MCU control module 3 is further connected to a camera module, where 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 with the sound 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, and the video signal obtained by the camera is fused with the sound signal in the MIC radio module 1 to generate an audio/video data stream, where the audio/video data stream may be monitored by the monitor module 5, so as to achieve the effect of playing the audio/video in real time. For example, the user is performing live video broadcast, and the audio and video effect can be obtained in real time through the monitoring module 5, so that whether the live video broadcast of the user normally plays sound or whether the sound size is proper is known, the effect that no sound exists in the live video broadcast process but the user cannot find in real time is avoided, and the user can adjust the live video in real time to achieve the proper sound size.
In another alternative embodiment, the MCU control module 3 is further connected to an external computer device, the external computer device transmits the audio signal currently played to the monitor module 5 through the MCU control module 3, and the multifunctional microphone further includes a monitor switch button connected to the MCU control module 3, where the monitor switch button is used to control the MCU control module 3 to switch between transmitting the analog audio signal from the MIC radio module 1 or the audio signal currently played from the external computer device to the monitor module 5.
In another alternative embodiment, the external computer device may be a PC or a smart phone, etc., and may be connected to the MCU control module 3 through a wire or wirelessly, and the external device may process the audio signal by the MCU control module 3 and send the processed audio signal to the monitor module 5 for monitoring. The monitoring switch key can be switched according to the selection of a user, the user can select to monitor the sound of the MIC radio module 1 or the sound of external computer equipment, in an exemplary live broadcast process, the user watches the live broadcast through a mobile phone and carries out wireless Bluetooth connection with the MCU control module 3, the mobile phone outputs the live broadcast audio signal of the user to the MCU control module 3 through wireless Bluetooth for processing and then transmits the live broadcast audio signal to the monitoring module 5, and the user can acquire the live broadcast sound of the user in real time through the monitoring module 5, so that the situation that the sound is not suitable for playing or sound is avoided, and the user experience is improved.
The embodiment of the invention provides a multifunctional microphone, which comprises: the MIC radio module is used for acquiring sound signals of the environment or a user and converting the sound signals into electroacoustic signals; the MCU control module is connected with the MIC radio module and 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 used for monitoring the analog audio signal. According to the multifunctional microphone provided by the embodiment of the invention, through the monitoring function and the adjusting function, the problem that the microphone cannot realize real-time monitoring in the prior art is solved, the effect that a user can more intuitively judge how the volume and the tone quality of the user are through the monitoring function is realized, and then the volume adjustment and the gain adjustment are carried out according to actual requirements, so that the user experience is improved.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. 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, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims (5)

1. A multi-functional microphone, comprising:
the MIC radio module is used for acquiring sound signals of the environment or a user and converting the sound signals into electroacoustic signals;
the MCU control module is connected with the MIC radio module and used for modulating and demodulating the electroacoustic signal and generating an analog audio signal;
the monitoring module is connected with the MCU control module and used for monitoring the analog audio signal;
the system also comprises a gain adjusting module, wherein the gain adjusting module is connected with the MIC radio module and the MCU control module and is used for performing gain adjustment and amplification on the sound signal;
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 a 3 rd pin 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 first pin 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 first end of the resistor R48 is connected to a first end of the resistor R49, a first end of the capacitor C66 is connected to a first pin of the chip U8, a first end of the capacitor C45 is connected to a first end of the resistor C66 is connected to a first end of the resistor C8, a second end of the capacitor C68 is connected to a first end of the capacitor C8 is grounded, a first end of the capacitor C68 is connected to the capacitor C8 is grounded, and a first end of the capacitor C68 is connected to a first end of the resistor C8 is grounded;
the multifunctional microphone further comprises: 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;
the volume adjusting module comprises a potentiometer VR2, a resistor R58 and a capacitor C90, wherein the first end of the resistor R58 is grounded, the second end of the resistor R58 is connected to a 3 rd pin of the potentiometer VR2, the first end of the capacitor C90 is connected to a 2 nd pin of the potentiometer VR2, and the second end of the capacitor C90 is grounded;
the MCU control module is also connected with external computer equipment, the external computer equipment transmits the audio signal which is currently played to the monitoring module through the MCU control module, the multifunctional microphone further comprises a monitoring switching key connected with the MCU control module, and the monitoring switching key is used for controlling the MCU control module to switch the analog audio signal from the MIC radio module or the audio signal which is currently played from the external computer equipment to be transmitted to the monitoring module.
2. The multifunctional microphone of claim 1, wherein the MIC pickup 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 the first end of the resistor R54, a second end of the resistor R54 is connected to the 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 the 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 the first end of the magnetic bead B9, a second end of the capacitor C77 is grounded, a first pin 1 of the connector CON3 is connected to the first end of the capacitor C77, a second end of the connector CON3 is connected to the second pin 2 is connected to the second end of the capacitor C3, and a second pin 76 is connected to the second end of the capacitor C4 is grounded.
3. The multifunctional microphone of claim 1 wherein the MCU control module comprises 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 being connected to the LED indicator, a second end of the resistor R7 being connected to a first 11 pin of the chip U3, a first end of the resistor R5 being connected to the LED indicator, a second end of the resistor R5 being connected to a first 12 pin of the chip U3, a first end of the resistor R34 being connected to a first 13 pin of the chip U3, a first end of the resistor R36 being connected to a first 18 pin of the chip U3, a second end of the resistor R20, a second end of the resistor R26 being connected to the first end of the chip R25, a first end of the resistor R25 being connected to the first end of the chip R25, a first end of the resistor R23 being connected to the first end of the chip R25, a first end of the resistor R25 being connected to the first end of the chip R23, a first end of the resistor R30 being connected to the first end of the chip R23, 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.
4. The multifunctional microphone of claim 1 wherein the listening module comprises resistor R66, capacitor C95, bead B11, capacitor C97, connector J6, resistor R65, capacitor C94, bead B12, capacitor C96 and bead B13, the first end of resistor R66 being connected to the first end of capacitor C95, the second end of capacitor C95 being grounded, the first end of bead B11 being connected to the first end of resistor R66, the second end of bead B11 being connected to pin 1 of connector J6, the first end of capacitor C97 being grounded, the second end of capacitor C97 being connected to the second end of bead B11, the first end of resistor R65 being connected to the first end of capacitor C94, the second end of capacitor C94 being grounded, the first end of bead B12 being connected to the first end of resistor R65, the second end of bead B12 being connected to pin 1 of connector J6, the first end of bead C96 being connected to the second end of capacitor C6 being grounded, the first end of bead B13 being connected to the second end of capacitor C96 being grounded.
5. The multifunctional microphone of claim 1 wherein the MCU control module is further coupled to a camera module, the camera module configured to input a video signal into the MCU control module, the MCU control module configured to fuse the video signal with the sound signal to generate an audio video data stream.
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Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2857827Y (en) * 2005-12-23 2007-01-17 陈彩萍 Portable foetus phonocardiograph
CN204887410U (en) * 2015-08-26 2015-12-16 深圳市华旭昌通讯技术有限公司 Realize compatible interface circuit of earphone
CN105872904A (en) * 2016-04-20 2016-08-17 乐视控股（北京）有限公司 Microphone circuit, system and headset
CN106375525A (en) * 2016-11-30 2017-02-01 深圳天珑无线科技有限公司 Anti-jamming circuit
CN107786741A (en) * 2017-10-20 2018-03-09 惠州Tcl移动通信有限公司 A kind of HAC systems and its implementation based on mobile terminal
CN107846637A (en) * 2017-11-06 2018-03-27 江门市金之声电子商务有限公司 A kind of band live microphone of distant control function
CN207166748U (en) * 2017-07-28 2018-03-30 湖北海盟科技有限责任公司 A kind of audio system for DSA educational surgery demonstrations
CN207427395U (en) * 2017-12-05 2018-05-29 重庆工商职业学院 Multi-phone microphone
CN207692060U (en) * 2018-01-15 2018-08-03 广州市锐芯电子科技有限公司 A kind of microphone switch detection circuit and microphone signal amplifying circuit
CN211557469U (en) * 2020-04-20 2020-09-22 遂宁摩天时代科技有限公司 Sound signal receiving and transmitting processing circuit
CN212413422U (en) * 2020-05-19 2021-01-26 深圳市泉音实业有限公司 Microphone with frequency spectrum function for automatic detection of live sound card
CN213126391U (en) * 2020-08-26 2021-05-04 湖南捷力泰科技有限公司 Novel live microphone
CN112788485A (en) * 2020-06-05 2021-05-11 深圳市纳祥科技有限公司 Audio signal processing circuit and live sound card

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103512650A (en) * 2012-06-21 2014-01-15 鸿富锦精密工业（深圳）有限公司 Buzzer testing circuit

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2857827Y (en) * 2005-12-23 2007-01-17 陈彩萍 Portable foetus phonocardiograph
CN204887410U (en) * 2015-08-26 2015-12-16 深圳市华旭昌通讯技术有限公司 Realize compatible interface circuit of earphone
CN105872904A (en) * 2016-04-20 2016-08-17 乐视控股（北京）有限公司 Microphone circuit, system and headset
CN106375525A (en) * 2016-11-30 2017-02-01 深圳天珑无线科技有限公司 Anti-jamming circuit
CN207166748U (en) * 2017-07-28 2018-03-30 湖北海盟科技有限责任公司 A kind of audio system for DSA educational surgery demonstrations
CN107786741A (en) * 2017-10-20 2018-03-09 惠州Tcl移动通信有限公司 A kind of HAC systems and its implementation based on mobile terminal
CN107846637A (en) * 2017-11-06 2018-03-27 江门市金之声电子商务有限公司 A kind of band live microphone of distant control function
CN207427395U (en) * 2017-12-05 2018-05-29 重庆工商职业学院 Multi-phone microphone
CN207692060U (en) * 2018-01-15 2018-08-03 广州市锐芯电子科技有限公司 A kind of microphone switch detection circuit and microphone signal amplifying circuit
CN211557469U (en) * 2020-04-20 2020-09-22 遂宁摩天时代科技有限公司 Sound signal receiving and transmitting processing circuit
CN212413422U (en) * 2020-05-19 2021-01-26 深圳市泉音实业有限公司 Microphone with frequency spectrum function for automatic detection of live sound card
CN112788485A (en) * 2020-06-05 2021-05-11 深圳市纳祥科技有限公司 Audio signal processing circuit and live sound card
CN213126391U (en) * 2020-08-26 2021-05-04 湖南捷力泰科技有限公司 Novel live microphone

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王文林.MP3电路原理与维修.国防工业出版社,2009,71-73. *

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