CN212588473U

CN212588473U - Multifunctional microphone

Info

Publication number: CN212588473U
Application number: CN202021546895.6U
Authority: CN
Inventors: 白晓明; 胡慧君
Original assignee: Shenzhen Chuangshiwei Smart Technology Co ltd
Current assignee: Shenzhen Chuangshiwei Smart Technology Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-02-23
Anticipated expiration: 2030-07-30
Also published as: CN214315550U

Abstract

The utility model relates to a microphone technical field, need two sets of microphones, with too high and awkward technical problem for solving among the prior art, the embodiment of the utility model provides a microphone host computer of multi-functional microphone, this microphone host computer includes: the monitoring interface is used for outputting the mixed sound of the human voice with sound effect and the accompaniment; the accompaniment interface is used for inputting external background tones or accompaniment tones; the transmitting terminal USB interface is used for charging or audio input/output; the sound effect module is used for processing sound effects; the coding module is used for carrying out digital-to-analog or analog-to-digital conversion on the audio; and the transmitting module is used for amplifying, modulating and transmitting the audio signal. The control module is used for initializing each module in the system, controlling the system, scanning keys and detecting states; the control module is respectively connected with the transmitting module, the sound effect module and the coding module, the coding module is respectively connected with the sound effect module, the accompaniment interface and the monitoring interface, and the sound effect module is connected with the USB interface of the transmitting terminal.

Description

Multifunctional microphone

Technical Field

The utility model relates to a microphone technical field particularly, relates to a multifunctional microphone.

Background

In recent years, with the rise of the network live broadcast industry, the burst development of live broadcast microphones and live broadcast sound card industries is driven. The network anchor only needs a computer or a mobile phone and can carry out the network live broadcast by matching with a live broadcast microphone.

On the other hand, with the strong demand of the Chinese on the K song entertainment, the traditional K song mass vendor has high singing cost and can not sing at any time and any place, so that the family K song entertainment can slowly go into thousands of households. Smart televisions have become the source of home living room entertainment and are becoming a great deal of popularity and renewal. The demand of using the television to carry out the K song arises, and the birth of a new product of the television K song microphone is promoted.

Therefore, two sets of microphones are needed, and the cost is increased and the cost is high when the two sets of microphones are purchased simultaneously; secondly, it is inconvenient and the microphone is troublesome to be changed. The inventor finds that the two can be combined into one by a technical scheme, the problem is overcome by the multifunctional integrated microphone, and the microphone can be used for live broadcasting and can be matched with a television to use. When used as a live broadcast, it can be used as a wired microphone, and when used as a television karaoke, it can be used as a wireless microphone.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multifunctional microphone has solved and has needed two sets of microphones, with high costs and awkward technical problem among the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is so realized:

in one aspect, an embodiment of the present invention provides a microphone host of multifunctional microphone, this microphone host includes: the monitoring interface is used for outputting the mixed sound of the human voice with sound effect and the accompaniment; the accompaniment interface is used for inputting external background tones or accompaniment tones; the transmitting terminal USB interface is used for charging or audio input/output; the sound effect module is used for processing sound effects; the coding module is used for carrying out digital-to-analog or analog-to-digital conversion on the audio; and the transmitting module is used for amplifying, modulating and transmitting the audio signal. The control module is used for initializing all modules in the system, controlling, key scanning and state detecting; the control module respectively with emission module the sound effect module coding module connects, coding module respectively with the sound effect module accompany the interface monitoring interface connection, the sound effect module with transmitting terminal USB interface connection.

As one embodiment, the microphone host further includes a coding switch for electronic volume adjustment and controlling the size of human voice, and the coding switch is connected to the control module.

As one of the implementation manners, the microphone host further comprises a light strip which is responsible for indicating the current working state, the battery voltage and the charging state, and the light strip is connected with the control module.

In one embodiment, the lamp strip is a red, green and blue LED lamp strip.

In one embodiment, the code module is WM 8988.

As one embodiment, the terminals of the monitoring interface and the accompaniment interface are both 3.5mm earphone sockets.

As one implementation mode, the USB interface at the transmitting end adopts a USB Type C female socket.

On the other hand, the embodiment of the utility model provides a wireless microphone receiver of multi-functional microphone, this wireless microphone receiver includes: the receiving module is used for receiving the UHF radio signal; the audio application processing module is used for controlling the receiving module and demodulating the audio signal in the receiving module; the receiving end USB interface is used for connecting the smart television or the set top box; the audio application processing module is connected with the receiving module and the receiving end USB interface.

As one of the implementation manners, the USB interface at the receiving end adopts USB Type a male.

The receiving module is KT0656M, and the number of the receiving modules is two.

The embodiment of the utility model provides a multifunctional microphone, the beneficial effect who brings:

the product is a combination of two product forms, integrates functions of a live microphone and a television K song microphone, is multipurpose due to one microphone, is easy to expand, realizes diversity of product functions, realizes multi-scene application of K songs, fully meets requirements of users on live and family K songs, and can automatically switch between the live microphone and the television K song microphone. When live broadcasting or on-line karaoke is carried out, the wireless transmitting part is automatically closed by detecting the insertion state of a connecting line, a common wired microphone mode is started, and the tone quality is improved by using internal sound effect processing; when the television end sings K, the wireless transmitting part is automatically started, and the wireless transmitting part can be used in a plug-and-play mode, so that complicated wiring is omitted, the user cost is effectively reduced, and the use is convenient.

Drawings

Fig. 1 is a schematic diagram of a multifunctional microphone host according to an embodiment of the present invention;

fig. 2 is a hardware block diagram of a multifunctional microphone host according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a wireless microphone receiver according to an embodiment of the present invention;

fig. 4 is a hardware block diagram of a wireless microphone receiver according to an embodiment of the present invention;

fig. 5 is a schematic application scene diagram of a multifunctional microphone according to an embodiment of the present invention;

fig. 6 is a view of a tv song application scene of the multifunctional microphone provided by the embodiment of the present invention;

fig. 7 is an audio channel diagram during live broadcasting provided by an embodiment of the present invention;

fig. 8 is an audio path diagram of the tv karaoke mode provided by the embodiment of the present invention.

In the figure: the system comprises a control module 10, a transmitting module 11, a sound effect module 12, an encoding module 13, a key 14, a transmitting end USB interface 15, an accompaniment interface 16, a monitoring interface 17, an encoding switch 18, a lamp strip 19, an audio application processing module 20, a receiving module 21, a receiving end USB interface 22 and an indicator light 23.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1 and fig. 2, for the embodiment of the present invention provides a microphone host, including: the system comprises a control module 10, a transmitting module 11, a sound effect module 12, an encoding module 13, a key 14, a transmitting end USB interface 15, an accompaniment interface 16, a monitoring interface 17, an encoding switch 18, a lamp strip 19, a microphone MIC and a transmitting antenna UHF ANT.

The control module 10 is respectively connected with the transmitting module 11, the sound effect module 12, the coding module 13, the keys 14, the coding switch 18 and the lamp strip 19, the coding module 13 is connected with the sound effect module 12, the accompaniment interface 16 and the monitoring interface 17, and the sound effect module 12 is connected with the transmitting terminal USB interface 15.

In this embodiment, the transmitting module 11 selects a KT0646M chip, which is a UHF transmitting chip, and has a main function of amplifying and modulating a human voice audio signal of a microphone MIC, and transmitting the signal through a transmitting antenna UHF ANT, and the KT0646M is connected to the microphone MIC and the transmitting antenna UHF ANT, respectively.

In this embodiment, the sound effect module 12 selects an HC611 chip, which is a professional audio DSP of the main microphone, and mainly processes various algorithms of the human sound effect, and is responsible for the algorithms of reverberation, echo, equalization, noise reduction, voice change, tone change and the like of the human sound, and supports the function of outputting the operation prompt tone.

In this embodiment, the encoding module 13 selects a WM8988 chip, which is a professional audio signal codec and is responsible for amplifying a weak signal of a microphone, converting the weak signal into a digital audio signal, uploading the digital audio signal to the HC611 through I2S, processing the digital audio signal, converting the audio signal processed by the HC611 into an analog audio signal, amplifying the analog audio signal, and pushing an earphone or a sound box to sound (HP _ OUT), wherein the WM8988 chip is connected to the microphone MIC.

In the present embodiment, the encoder switch 18 is used for electronic volume adjustment, and is mainly used for controlling the size of human voice.

In this embodiment, the lamp strip 19 is a red, green and blue LED lamp strip for the status indicator of the microphone host, and is responsible for indicating the current working status, the battery voltage, the charging status, and the like, and meanwhile, the cool artistic effect can be achieved.

In this embodiment, the accompaniment interface 16 selects a 3.5mm earphone mother seat for inputting external background sound or accompaniment sound, and can be connected to a mobile phone or a sound box as an input source of live broadcast or K song background sound or accompaniment sound.

In this embodiment, the monitoring interface 17 selects a 3.5mm earphone socket for use, and is used for outputting the mixed sound of the voice with sound effect and the accompaniment, so as to connect a 3.5mm earphone and also insert an active sound box through an audio patch cord.

In this embodiment, the USB Type C interface is selected for use to transmitting terminal USB interface 15, and this is multi-functional interface, both is USB Type C's the mouth that charges, also is live interface, can realize different functions through the patch cord of difference, can plug into audio input output devices such as various audio interface's cell-phones, computers.

The main functions are as follows: the accompaniment of the audio equipment such as the mobile phone or the computer is input into the microphone host, and simultaneously the voice with sound effect of the microphone host is uploaded to the audio equipment such as the mobile phone or the computer through the interface (sound recording function).

In the present embodiment, the encoding switch 18 is a stepless encoding switch, and the operation is convenient.

In this embodiment, the microphone MIC selects an electret capacitive microphone core with a diameter of 14mm, the sensitivity is high, the pickup effect is good, one path of the microphone is connected with the transmitting module 11, the other path of the microphone is connected with the encoding module 13, when the USB Type C conversion line is not inserted or the 3.5mm Aux In line is not inserted, the microphone host is In a common wired microphone mode, the UHF transmitting part is closed, and at this time, the microphone is only effectively connected with the encoding module 13.

In the present embodiment, the keys 14 include three keys, which are a switch/ear return key, a sound effect key, and a balance key. A switch/ear return key, wherein the microphone is switched on and off by pressing for 1 second for a long time, and real-time ear return is switched off and on (namely real-time voice output is switched off and real-time voice output is switched on) by continuously clicking for 2 times within 1 second; the sound effect key can circularly switch 10 sound effect modes, wherein the sound effect modes are original sound, KTV, a bar, a theater, a concert, a recording studio, a valley, magic beast sound, doll sound and electric sound respectively; the balance key can circularly switch 6 large balance modes, namely a standard balance mode, a low balance mode, a bright balance mode, a male balance mode, a female balance mode and a gramophone mode.

In this embodiment, the control module 10 selects an SC95F7513 single chip microcomputer as an 8-bit single chip microcomputer, which is a main control MCU of the microphone host, and has the functions of:

1. the UHF transmitting chip KT0646M is initialized and controlled by UHF _ EN and UHF _ I2C.

2. The DSP HC611 is initialized and controlled by a UART (serial port), and the 10 major mode and the 6 major equalization mode of the HC611 are switched.

3. WM8988 is initialized and controlled by WM _ I2C.

4. And is responsible for coding switch detection.

And 5, detecting the insertion of the Aux In audio line and the USB Type C patch cord.

6. And (5) key scanning and processing.

7. And display control of the three-color LED indicator lamp.

Introduction of basic working principle of the multifunctional microphone main unit:

1. the user returns the key for a long time and exceeds 1 second according to the switch/ear, and the system is electrified and started up, and when the MCU detects that an Aux In audio line or a USB Type C patch cord is inserted, the microphone host enters a television microphone mode: the UHF _ EN output is high and the UHF transmitting chip is initialized by UHF _ I2C and set to the UHF transmitting frequency and begins transmitting. The blue LED is lit.

2. The DSP HC611 is initialized through the UART bus, and the current sound effect mode and the balance mode of the HC611 are set. (the sound effect mode and the equalization mode have power-off memory function).

3. WM8988 is initialized via the WM _ I2C bus, the input-output channel parameters of WM8988 are set, and the HP _ OUT output is turned on.

4. At this time, a 3.5mm earphone is inserted into a 3.5mm earphone hole of the microphone main body, speaking towards the microphone, and the HP _ OUT outputs human voice with sound effect.

Referring to fig. 7, fig. 7 is an audio path diagram of the microphone host during live broadcasting

The figures refer to some professional terms, wherein, dry sound refers to human sound which is original sound and is not processed by any sound effect; the wet sound refers to human voice processed by a sound effect algorithm, such as reverberation, echo, equalization, sound change, tone change, electric sound and the like; remix refers to mixed audio of wet sound and accompaniment (or background music).

The A/D in the figure is an ADC converter which can convert analog audio into digital audio; the DAC in the figure is a DAC converter which can convert digital audio into analog audio; the "+" in the figure indicates a mixer, which is to superpose 2 or more kinds of sounds.

Live audio path specification:

the original analog human voice signal output by the capacitive microphone core is converted into a digital audio signal through an ADC (analog to digital converter) in an encoding module WM8988, the digital audio signal is input into a sound effect module DSP (digital signal processor) HC611 through an I2S bus, after a series of sound effects are processed by the sound effect module HC611, one path of the digital audio signal is output to the encoding module WM8988 through an I2S bus, and the other path of the digital audio signal is converted into an analog audio signal through a DAC in the sound effect module HC611 and is output as a recorded sound to a live broadcast mobile phone or a computer through a USB Type C.

Simultaneously, the accompaniment signal of 3.5mm Aux In interface input to and the background music through the multi-functional interface input of USB Type C, behind the inside audio mixing of coding module WM8988, output to 3.5mm earphone delivery outlet.

Referring to fig. 5, fig. 5 is a live webcast or online karaoke application.

When the USB Type C conversion line is not inserted or the 3.5mm Aux In line is not inserted, the microphone host is In the normal wired microphone mode (the UHF transmission part is off).

The multifunctional microphone host is connected with an earphone or a sound box through a 3.5mm audio line, the multifunctional adapter line of the USB Type C is connected with a smart phone (IOS or Android) or a computer, the mobile phone is a live phone (or a computer), the vocal accompaniment of the mobile phone (or the computer) can be input into the microphone host through the multifunctional adapter line of the USB Type C, and meanwhile, the voice processed in the microphone host is uploaded to the live phone (or the computer) through the multifunctional adapter line of the USB Type C. Meanwhile, another mobile phone or computer (optional function) can be connected through the 3.5mm Aux In, and the mobile phone or computer is used for providing background music or accompaniment for the microphone host.

Referring to fig. 3 and 4, for the embodiment of the present invention provides a wireless microphone receiver, including: the device comprises an audio application processing module 20, a receiving module 21, a receiving end USB interface 22 and an indicator lamp 23, wherein the audio application processing module 20 is respectively connected with the receiving module 21, the receiving end USB interface 22 and the indicator lamp 23.

In this embodiment, the receiving module 21 selects a KT0656M chip, which is a UHF receiving chip and is mainly responsible for receiving UHF signals transmitted by the chip of the microphone host KT0646M, demodulating human voices, and outputting the demodulated signals through an I2S interface, where the number of the receiving modules 21 is two, and the receiving modules can simultaneously receive two paths of wireless microphone signals.

In this embodiment, the Audio application processing module 20 selects an AP8224C2 chip, which is an Audio SOC, i.e., an Audio system-level chip, and is an ARM-based 32-bit Audio application processor, which is also a main control MCU at the receiving end. The UHF receiving chip is mainly responsible for initializing and controlling the UHF receiving chip, and I2S voice output by KT0656M is packaged into a USB AUDIO data packet and uploaded to the smart television or the set top box.

In this embodiment, the USB interface 22 of the receiving end selects USB type a male connector for connecting to a USB female port of a television or a set-top box.

In the present embodiment, the indicator light 23 includes three LEDs, which are SYS _ LED, UHF _ LED1, and UHF _ LED2, wherein SYS _ LED is a system status indicator light, and when the system operates, the LED flashes slowly; when the USB AUDIO data is being uploaded, the LED flashes rapidly; the UHF _ LED1 and the UHF _ LED2 are UHF signal indicating lamps, and correspond to the two receiving modules, respectively, and when the UHF receiving module receives a signal, the corresponding UHF _ LED indicating lamps are turned on.

Introduction of basic working principle of wireless microphone receiver:

1. and the intelligent television or the set top box is started.

2. The wireless microphone receiver is inserted into a USB port of a television or a set top box, the USB receiver is powered on and started, and the SYS _ LED starts to flicker slowly.

AP8224C2 outputs CHIP _ EN pin high, power up KT0656M CHIP, initiate KT0656M through I2C bus, and set the receiving frequency of KT 0656M.

4. When KT0656M receives the UHF signal from the microphone main unit, I2S of KT0656M outputs a human voice audio signal, and meanwhile, the corresponding UHF _ LED is lightened.

5. The user starts the K song application installed on the television, selects songs and sings, at the moment, the television reads the USB AUDIO voice data through the USB port, and the SYS _ LED flashes quickly.

Referring to fig. 8, fig. 8 is an audio path diagram of the karaoke mode of the television.

When the control module 10 of the microphone host does not detect that 3.5mm Aux In is inserted or there is no USB Type C multifunctional patch cord inserted, the microphone host will turn on the UHF transmission function. At the moment, a wireless microphone receiver inserted into a USB interface of the smart television or the set-top box receives a UHF signal, demodulates the voice through a KT0656M receiving chip, then sends the voice into an AP8224C2 chip, packs the voice into a USB AUDIO data packet, sends the data packet to the smart television or the set-top box running K song application through a USB interface, collects the voice from the USB interface in real time by the K song application, performs sound mixing with accompaniment of the song after sound effect processing (reverberation, ECHO and balance) of the voice, and then outputs the sound to a television loudspeaker.

Referring to fig. 6, fig. 6 is a view of a tv song-by-song application scene of a microphone.

When the USB Type C conversion line is not inserted or the 3.5mm Aux In line is not inserted, the microphone host computer is In a UHF wireless microphone mode (the UHF transmitting part is turned on).

At the moment, the human voice is directly modulated and transmitted by the transmitting module without being processed by a sound effect module DSP in the microphone host. After receiving the UHF signal, the wireless microphone receiving end demodulates the voice and uploads the voice to the intelligent television or the set top box which is provided with the television K song APP through the USB port, the television or the set top box collects the USB voice and carries out voice sound effect processing, and the voice is output from a television loudspeaker in real time after being synthesized with song accompaniment, so that the functions of online K song recording and song recording are realized.

live K song microphone and TV K song microphone are collected in an organic whole, and a microphone is multi-purpose, easily expands, realizes the multi-scene application of K song, switches between live microphone and TV K song microphone automatically. When live broadcasting or on-line karaoke is carried out, the wireless transmitting part is automatically closed by detecting the insertion state of a connecting line, a common wired microphone mode is started, and the tone quality is improved by using internal sound effect processing; when the television end sings K, the wireless transmitting part is automatically started, and the wireless transmitting part can be used in a plug-and-play mode, so that complicated wiring is omitted, the user cost is effectively reduced, and the use is convenient.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes, modifications, equivalents and improvements can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a multifunctional microphone, includes the microphone host computer, its characterized in that, the microphone host computer is provided with:

a monitoring interface (17) for outputting the mixed sound of the human voice with sound effect and the accompaniment;

an accompaniment interface (16) for external background sound or accompaniment sound input;

a transmitting terminal USB interface (15) for charging or audio input/output;

the sound effect module (12) is used for sound effect processing;

the encoding module (13) is used for carrying out digital-to-analog and/or analog-to-digital conversion on the audio;

the transmitting module (11) is used for amplifying, modulating and transmitting the audio signal;

the control module (10) is used for initializing relevant modules in the system, controlling the system, scanning keys and detecting states;

control module (10) respectively with emission module (11), sound effect module (12), coding module (13) are connected, coding module (13) respectively with sound effect module (12), accompany interface (16) monitor interface (17) and connect, sound effect module (12) with transmitting terminal USB interface (15) are connected.

2. The multifunctional microphone according to claim 1, wherein the microphone main body is further provided with:

the coding switch (18) is used for electronic volume adjustment and controlling the size of human voice, and the coding switch (18) is connected with the control module (10).

3. The multifunctional microphone according to claim 2, wherein the microphone main body is further provided with:

the lamp strip (19) is responsible for indicating the current working state, the battery voltage and the charging state, and the lamp strip (19) is connected with the control module (10).

4. A multifunctional microphone according to claim 3, characterized in that the light strip (19) is a three-color red, green and blue LED strip.

5. Multifunctional microphone according to any of claims 1 to 4, characterized by the fact that said coding module (13) is of the WM8988 type.

6. The multifunctional microphone according to any one of claims 1 to 4, wherein the terminals of the listening interface (17) and the accompaniment interface (16) are each a 3.5mm earphone socket.

7. The multifunctional microphone according to any one of claims 1 to 4, wherein the transmitting end USB interface (15) adopts a USB Type C female socket.