CN219514188U

CN219514188U - Multifunctional K song equipment

Info

Publication number: CN219514188U
Application number: CN202122516697.6U
Authority: CN
Inventors: 胡慧君
Original assignee: Shenzhen Chuangshiwei Smart Technology Co ltd
Current assignee: Shenzhen Chuangshiwei Smart Technology Co ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2023-08-11
Anticipated expiration: 2031-10-19

Abstract

The application relates to a multifunctional Karaoke device, comprising: the key assembly at least comprises a first key and a second key, wherein the first key is used for determining the receiving frequency of the wireless microphone according to a first operation; the second key is used for determining that the current processing is sound effect processing; a multi-position switch assembly including at least a first multi-position switch including at least first, second and third gear positions; the wireless receiving device is used for receiving the human voice signal transmitted by the wireless microphone according to the receiving frequency of the wireless microphone; the system chip is used for carrying out the sound effect processing on the human voice signal according to the current processing to obtain wet voice or mixed audio; according to the gear of the first multi-bit switch, the working in one of a Bluetooth mode, a USB microphone mode or a USB sound box mode is determined, and the wet sound or the mixed audio is output; and the output component is used for outputting the wet sound or the mixed audio to different sound production devices for playing so as to finish K songs.

Description

Multifunctional K song equipment

Technical Field

The embodiment of the application relates to the field of audio playing, in particular to a multifunctional K song device.

Background

The K song system on the market at present can be roughly divided into three types, namely a traditional sound system with K song function, a family K song sound system and a television K song wireless microphone.

The traditional sound system with the karaoke function generally comprises a wireless microphone, a wireless microphone receiver, a preamplifier, a sound console, a power amplifier and a plurality of loudspeakers. Its advantages are special equipment, high sound quality and suitability for professional performance. The system has the defects of multiple devices and complex wiring, and the non-professional sound equipment is not easy to wire and use. The overall cost is also high (varying from thousands to tens of thousands). The whole set of equipment of the system is heavy and inconvenient to carry at any time.

The K singing voice king equipment consists of a wireless microphone and a sound host with a wireless microphone receiver, wherein an audio input module, an audio processing module, a wireless microphone receiving module, a power amplifier module and a loudspeaker are integrated in the sound host. The portable household electric power generation device has the defects that the portable electric power generation device is only suitable for household use and is inconvenient to carry at any time. The price is relatively inexpensive (approximately 1000-5000 yuan) compared to traditional K songs, but this price is still somewhat expensive for the average consumer.

A television K song wireless microphone is a household wireless K song product which is developed in recent years, and mainly comprises a wireless microphone and a USB receiver. And installing a corresponding K song APP on the intelligent television, so that the K song function of the television can be realized. The intelligent television has the defects that the intelligent television is excessively dependent on the television APP, and the APP well adapted to the intelligent television must be installed, or else the K song function cannot be realized. The television set is utilized to carry the speaker K song, and the speaker of the television set has the advantages of general tone quality and poor K song effect.

Disclosure of Invention

In order to overcome the defects of the three multifunctional Karaoke devices, the embodiment of the application provides the multifunctional wireless multifunctional Karaoke device.

The embodiment of the application provides a multifunctional Karaoke device, which comprises: the key assembly at least comprises a first key and a second key, wherein the first key is used for determining the receiving frequency of the wireless microphone according to a first operation; the second key is used for determining that the current processing is sound effect processing; a multi-position switch assembly including at least a first multi-position switch including at least first, second and third gear positions; the wireless receiving device is used for receiving the human voice signal transmitted by the wireless microphone according to the receiving frequency of the wireless microphone; a system on a chip (SOC) for performing the sound effect processing on the human voice signal according to the current processing to obtain wet sound or mixed audio; according to the gear of the first multi-bit switch, the working in one of a Bluetooth mode, a USB microphone mode or a USB sound box mode is determined, and the wet sound or the mixed audio is output; and the output component is used for outputting the wet sound or the mixed audio to different sound production devices for playing so as to finish K songs.

As a possible implementation, the wireless microphone includes an FM microphone, a VHF band microphone, a UHF band microphone, a 2.4G, 5.8G, or a bluetooth microphone.

As a possible implementation, the system chip is further configured to, with the first multi-position switch in a first gear: and receiving a downlink music audio signal in the Bluetooth mode, determining that the current processing is to eliminate a human voice signal in the music audio signal according to the second operation of the first key so as to obtain an accompaniment audio signal, mixing the wet voice and the accompaniment audio signal to obtain the mixed audio, and outputting the mixed audio.

As a possible embodiment, the system chip is further configured to, with the first multi-position switch in the second gear: and uploading the human voice signal through a USB interface in a USB microphone mode.

As a possible embodiment, the system chip is configured to, with the first multi-position switch in a third gear: and receiving downlink music audio signals through a USB interface in the USB sound box mode, determining that the current processing is to eliminate human voice signals in the music audio signals according to the second operation of the first key so as to obtain accompaniment audio signals, and mixing the wet sound and the accompaniment audio signals to obtain the mixed audio.

As a possible implementation manner, the key assembly key further comprises a first adjusting key and a second adjusting key; the system chip is further configured to: determining that the current processing is to circularly switch the sound effect of the voice signal according to the second key to obtain wet sound; the sound effect comprises one or a combination of echo, reverberation, equalization, noise reduction and howling prevention; the system chip is further configured to: determining that the current process is to forward switch music audio signal tracks or forward adjust the wet sound volume according to the first adjusting key; the system chip is further configured to: and determining that the current process is to reversely switch the music audio signal tracks or reversely adjust the wet sound volume according to the second adjusting key.

As a possible implementation, the output component includes an audio transmitter for transmitting the wet sound or the mixed audio, and the transmitting mode includes FM, VHF band, UHF band, 2.4G, 5.8G or bluetooth transmitting mode.

As a possible implementation manner, the multifunctional K song device further includes: a second multi-position switch comprising a plurality of gears for determining a transmission frequency at which the audio transmitter transmits the wet sound or mixed audio in FM; the system chip is further configured to: and determining the transmitting frequency when the wet sound or the mixed audio is transmitted in FM according to the gear position of the second multi-bit switch.

As a possible implementation, the output component includes an analog audio output module.

As a possible implementation, the output assembly further comprises at least one LED indicator light for indicating the at least one operation mode; or indicate the current charge.

As a possible implementation manner, the multifunctional K song device further includes: the built-in capacitor microphone is used for collecting voice instructions of a user in real time; the system chip is further configured to: recognizing a voice instruction of the user to obtain first voice, wherein the first voice is used for indicating the operation of the user; acquiring second voice according to a trigger signal of at least one key or internal event, wherein the second voice is used for prompting the current operation or internal event of a user; outputting the first voice or the second voice.

The multifunctional K song equipment provided by the embodiment of the application integrates the functions of wireless microphone receiving, wireless audio transmitting, bluetooth music, human sound effect processing, USB audio receiving and transmitting and the like, and can be widely used for a plurality of occasions such as outdoor mobile phone K songs and live broadcast, home intelligent television (smart mobile phone) K songs and live broadcast, vehicle-mounted K songs and the like.

Aiming at the application scenes, a plurality of modes for realizing K songs and live broadcasting exist, and users can flexibly configure and use according to specific application scenes and requirements.

The multifunctional K song device provided by the embodiment of the application integrates more functions, has low price and high economy, can replace equipment such as a professional wireless microphone, a professional sound console, a professional active sound box and the like on the premise of not particularly high requirements on audio quality, and saves hardware cost for users.

The multifunctional K song equipment provided by the embodiment of the application has high integration level, can realize the size of the name card with the appearance, is internally provided with the lithium battery, has a wireless receiving and transmitting function, gets rid of wired constraint, and is particularly suitable for being carried at home, during travel and at any time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments disclosed in the present specification, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only examples of the embodiments disclosed in the present specification, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a hardware block diagram of a multifunctional K song device according to an embodiment of the present application;

fig. 2 is an audio path and control logic diagram of a multifunctional K song device according to an embodiment of the present application;

fig. 3 is a system frame of the multifunctional K song device in the USBMic mode according to an embodiment of the present application.

Fig. 4 is a schematic diagram of a mobile phone K song or a vehicle-mounted K song scene provided by an embodiment of the present application;

fig. 5 is a schematic diagram of a family K song scenario in which a sound generating device provided by an embodiment of the present application is a speaker of a television set;

fig. 6 is a schematic diagram of a family K song scenario in which a sound generating device provided by an embodiment of the present application is an external active speaker.

Detailed Description

The technical scheme of the embodiment of the application is further described in detail through the drawings and the embodiments.

An embodiment of the present application provides a multifunctional K song device, including: a key assembly composed of a plurality of keys, wherein one or a combination of the plurality of keys in the key assembly can determine wireless audio, a play mode, an audio processing mode and/or a karaoke mode; a multi-bit switch assembly comprising a plurality of multi-bit switches, each multi-bit switch comprising a plurality of gears, each gear for determining a receive mode and a transmit mode; wireless receiving means for receiving a human voice signal transmitted from the wireless microphone based on the determined wireless audio; a system on a chip (SOC) for enumerating the multifunctional Karaoke devices into different devices according to a plurality of gears of the multi-bit switch assembly, and processing the human voice signals according to a Karaoke mode and/or an audio processing mode to obtain dry voice or mixed audio; and the output component is used for outputting dry sound or mixed audio to different devices according to the sending mode to play so as to finish K songs.

Fig. 1 is a hardware block diagram of a multifunctional K song device according to an embodiment of the present application. As shown in fig. 1, each key of the key assembly 40 is connected to a master SOC, the multi-bit switches SW1, SW2 are connected to the master SOC, and the wireless receiving device 41 is connected to the master SOC; the system chip SOC is used for enumerating the multifunctional K song equipment into different equipment according to a plurality of gears of the multi-bit switch, and processing the human voice signals according to the playing mode, the sound effect processing mode and/or the K song mode to obtain dry sound or mixed audio.

Therefore, on the hardware frame, the same function can be realized by the hardware frame formed by the independent MCU, the independent USB audio module, the independent Bluetooth module and the independent audio processing module or the hardware frame formed by the combination of the arrangement of any four modules, and the hardware frame also belongs to the protection scope of the patent.

The system-on-a-chip SOC also integrates FM transmission, UHF reception, 2.4G transceiving or 5.8G audio transmission functions.

The multifunctional K song device 10 provided in the embodiment of the present application includes a key assembly 40, where the key assembly 40 includes a plurality of keys, each key is connected to a corresponding input interface of the system on a chip SOC, and the key assembly 40 is configured to provide at least one input signal.

For example, the key assembly 40 may have 5 keys, each with a key alert tone to alert the user of the feedback of the key. The specific functions of each key are shown in table 1 below.

TABLE 1

As shown in table 1, the KEY key_1 functions as play/pause/start/stop. The long press key_1 is turned on/off for 1.5 seconds; and playing and pausing the short press key_1. The working mode of the system on chip SOC after power-on is determined by the gear of the multi-bit switch SW1, and may be a Bluetooth mode (Bluetooth), a USB microphone mode (USB mic) or a USB speaker mode (USB play back).

In one possible embodiment, the system on chip SOC when KEY key_1 is turned on outputs a voice prompt "on" and then plays the corresponding mode of operation.

The KEY key_2 functions to cancel the voice and sweep the frequency. The user presses key_2 for 3 seconds for a long time, the system chip SOC enters a wireless microphone sweep operating mode, and the purpose of sweep is to match the UHF wireless microphone of more types for the multifunctional K song device 10. The KEY key_2 is marked as a first KEY, and long pressing of the key_2 for 3 seconds is marked as a first operation.

The first operation of KEY key_2 is used for frequency matching between the microphone and the receiving module to search the wireless microphone signal, namely the automatic channel searching function similar to a radio, and once the microphone signal is searched, the receiving frequency is fixed and the power-off memory function is provided.

The UHF wireless microphones of different types have different transmitting frequencies, and the frequency sweeping function of the embodiment of the application is specially designed for the UHF wireless microphones. Illustratively, the steps of using the multifunctional K song device 10 provided by the embodiment of the present application to sweep frequencies to find connectable UHF wireless microphones are:

s11, the system chip SOC sets the UHF wireless receiving frequency in the multifunctional K song device 10 provided by the embodiment of the application from 650MHz to 750MHz in sequence, and the step length of sweep frequency switching is 0.25MHz.

S12, the system on chip SOC judges whether a valid UHF wireless microphone signal exists or not by judging the intensity value of the received UHF signal.

S13, after capturing the effective UHF wireless microphone signal, the system chip SOC confirms for a plurality of times, and finally, the current receiving frequency is determined as the UHF wireless receiving frequency, and meanwhile, the frequency is stored.

The system chip SOC directly sets the receiving frequency to the frequency after the multifunctional Karaoke device 10 provided by the embodiment of the application is started next time, so that the matching function of the UHF wireless microphone and the multifunctional Karaoke device 10 provided by the embodiment of the application can be completed.

In case the user presses key_2 short (duration less than 3 seconds), the system on chip SOC goes into mute. The voice eliminating function is to eliminate the original voice signal in the music audio signal through a specific algorithm, and only the accompaniment audio signal in the music audio signal is left; the voice eliminating function is suitable for the situation that K songs are directly carried out by songs with original sings under the condition that special accompaniment music is not found. The short KEY 2 is noted as a second operation for less than 3 seconds.

The original singing mode and the guided singing mode can be obtained by optimizing the functions. The original singing mode is to close the voice eliminating function; the singing guiding mode is to start the automatic voice eliminating function.

In a possible embodiment, during the singing guiding mode, the system chip SOC monitors the amplitude of the voice signal received by the wireless receiving device 41 in real time, and finds that the user speaks or sings into the microphone, that is, detects that the amplitude of the voice signal of the wireless receiving device 41 exceeds a specified threshold, immediately starts the voice eliminating function, and the current working mode of the multifunctional K song device 10 is the singing guiding mode; when it is detected that no user speaks into the microphone or sings for more than 5 seconds, that is, the voice signal amplitude of the wireless receiving device 41 does not exceed the specified threshold, the voice canceling function is turned off, the original singing is played, and the current working mode of the multifunctional K song device 10 is the original singing mode. The function is very practical in an actual K song scene, and user experience is greatly improved.

In one possible embodiment, when the user presses key_2 for a short time, a voice prompt is output to report "original singing mode" or "lead singing mode".

The multifunctional K song device 10 provided by the embodiment of the application comprises a wireless receiving device 41, wherein the communication mode is FM, VHF frequency band, UHF frequency band, 2.4G, 5.8G or low-delay Bluetooth, and the wireless receiving device is used for receiving the voice signal transmitted by the wireless microphone according to the determined receiving mode or receiving frequency.

The KEY key_3 is a sound effect KEY and is used for circularly switching six sound effects to obtain wet sound with different sound effects. The system chip determines that the current processing is to circularly switch sound effects on the voice signals according to the sound effect keys so as to obtain wet sound; the sound effects include one or a combination of echo, reverberation, equalization, noise reduction, and howling prevention.

The KEY key_4 is a first adjusting KEY and is used for determining that the current process is to switch the music audio signal track forward or adjust the wet sound volume forward; and the system chip determines that the current process is to forward switch the music audio signal track or forward adjust the wet sound volume according to the first adjusting key.

The key_5 is a second adjusting KEY for determining that the current process is to switch the track of the music audio signal reversely or adjust the wet sound volume reversely. And the system chip determines that the current process is to reversely switch the music audio signal tracks or reversely adjust the wet sound volume according to the second adjusting key.

The embodiment of the application provides the 5 keys, wherein a plurality of functions are multiplexed with the same key, and more keys can be adopted to realize the functions by one of ordinary skill in the art, and the application belongs to the protection scope of the patent.

The multifunctional K song device 10 provided by the embodiment of the application comprises a USB interface (USB Port) 44, and the system chip SOC is connected with an upper computer through the USB interface to receive downlink audio signals or send uplink audio signals.

The working modes of the multifunctional K song device 10 provided by the embodiment of the application for receiving or transmitting audio signals are respectively a Bluetooth mode (Bluetooth), a USB microphone mode (USB bmic) and a USB sound box mode (USB play back), wherein the USB microphone mode and the USB sound box mode can be collectively referred to as a USB working mode.

The multifunctional K song device 10 provided in the embodiment of the present application selects an operation mode of receiving or transmitting an audio signal through a multi-bit switch assembly having a plurality of multi-bit switches. Illustratively, two multi-bit switches, such as SW1 and SW2, may be included. The multi-position switch SW1 includes a Bluetooth gear, a USBMic gear, and a USBPlayback gear, which are respectively referred to as first, second, and third gears. Through the switching of the three gears, the multifunctional Karaoke device 10 works in different working modes, and the intelligent host enumerates the multifunctional Karaoke device 10 into different devices according to the working modes of the multifunctional Karaoke device 10, so that Karaoke is realized. The multi-bit switch SW1 is denoted as first switch.

The Bluetooth gear is in Bluetooth mode, and when the SW1 dials to the gear, it is determined that the multifunctional K song device 10 realizes the playing function of the Bluetooth speaker. In this mode, the intelligent host enumerates the multifunctional K song device 10 as a bluetooth speaker, and may transmit audio data to the multifunctional K song device 10 provided by the embodiment of the present application through bluetooth, where the audio data is used as a K song accompaniment source of the multifunctional K song device 10.

In a possible embodiment, under the condition that the first multi-position switch is in the first gear, the system chip receives the downlink music audio signal in a bluetooth mode, determines that the current processing is to eliminate the human voice signal in the music audio signal according to the second operation acting on key_2 to obtain an accompaniment audio signal, mixes the wet voice and the accompaniment audio signal to obtain mixed audio, and outputs the mixed audio.

The USB shift is a USB voice upload mode, and when SW1 dials into this shift, it is determined that the multifunctional K song device 10 implements the function of a USB microphone. The multifunctional K song device 10 provided by the embodiment of the application is enumerated as a standard USB microphone (double-channel) by the intelligent sound generating device 14, and the upper computer can read the voice with sound effect collected by the multifunctional K song device 10 in real time. The application form is the condition that the intelligent sound generating equipment is a television local loudspeaker, namely a scene I in a family K song scene.

In one possible embodiment, the system chip uploads the human voice signal, wet voice and/or mixed audio over the USB interface in USB microphone mode with the first multi-bit switch in the second gear.

The USB play back gear is a USB audio play mode, and when SW1 dials to this gear, it is determined that the multifunctional K song device 10 realizes the function of USB audio play. The multifunctional K song device 10 provided by the embodiment of the application is enumerated as a standard USB playing device (USB sound box) by the upper computer, and the upper computer can send audio to the multifunctional K song device 10 provided by the embodiment of the application through the USB interface (USB PORT) 44 to serve as a K song accompaniment source of the device.

In a possible embodiment, when the first multi-position switch is in the third gear, the system chip receives the downlink music audio signal through the USB interface in the USB speaker mode, determines that the current process is to cancel the human voice signal in the music audio signal according to the second operation acting on key_2 to obtain an accompaniment audio signal, and mixes the wet voice signal with the accompaniment audio signal to obtain the mixed audio.

Note that: both the USBMic mode and the USBPlayback mode require connection to a smart host (host) via a USB interface 44.

The multifunctional K song device 10 provided by the embodiment of the application has a wireless transmitting function, wherein the wireless can be an FM, VHF frequency band, UHF frequency band, 2.4G, 5.8G or bluetooth transmitting function. In real life, since FM applications are relatively wide, particularly in-vehicle smart hosts, which generally have FM radio functions, FM transmission is preferentially used for wireless audio transmission of the multi-function K song device 10. Other wireless transmission modes, as well as other conceivable audio transmission modes not mentioned here, fall within the scope of the present application.

The wireless transmitting function of the multifunctional K song device 10 provided by the embodiment of the application is realized through the audio transmitter 42 of one of the output components, and the main function of the audio transmitter 42 is to transmit out wet sound or mixed audio processed by the system chip SOC, and the transmitting mode can be FM, VHF frequency band, UHF frequency band, 2.4G, 5.8G or bluetooth. Because FM is more general, for example, the vehicle-mounted host machine is provided with FM receiving and part of the pull rod loudspeaker boxes are also provided with FM receiving, the FM transmitting mode can be preferentially adopted.

The multi-bit switch SW2 is denoted as a second multi-bit switch for selecting the transmission frequency of the FM transmission of the audio transmitter 42, comprising three gear positions, corresponding to 3 different FM transmission frequencies, such as: FM 88.5MHz, FM 96.0MHz, FM 106.8MHz. Because the FM radio frequencies in each region are different, by the user switching the gear of the multi-position switch SW2, the system chip determines the FM transmission frequency of the audio transmitter 42, and staggers the FM radio currently being used by the user as much as possible to avoid interfering with the FM radio currently being used by the user.

The output assembly of the multifunctional K song device 10 provided by the embodiment of the application further includes an LED indicator light assembly 42, where the LED indicator light assembly 42 includes:

the LED1 is used for indicating that the current working mode of the multifunctional Karaoke device 10 is a Bluetooth mode. If the current multifunctional Karaoke device 10 is in a Bluetooth unconnected state, the LED1 is not on; if Bluetooth is already connected, LED1 breathes slowly; if the microphone is swept in this mode, the LED1 flashes rapidly. The LED1 may be a blue LED indicator light, for example. Breathing refers to the effect of the brightness of an LED changing from dark to bright over time (e.g., within 5 seconds). The flicker refers to an effect of alternately turning on and off the LED lamp.

The LED2 is configured to indicate that the current operation mode of the multifunctional K song device 10 is a USB mode, where the USB mode and the USB playback mode are collectively referred to as a USB mode. If USB audio data is not transmitted, the LED2 breathes slowly; if USB audio data is being transmitted, LED2 breathes slowly; if the microphone is swept in this mode, the LED2 flashes rapidly. The LED2 may be a red LED indicator light, for example.

The LED3 is used as a backlight lamp of 5 KEYs (KEY 1-KEY 5), the LED3 is a group of LED lamps connected in parallel, and can be composed of a plurality of white LED lamps, and the LED lamps are uniformly controlled by one PWM port of the system chip SOC.

The LED3 can indicate the charging state of the multifunctional Karaoke device 10, and when the multifunctional Karaoke device 10 is started and a USB is not inserted, the LED3 is slightly lighted; when the lithium battery 43 is low in electric quantity and USB is not inserted, the LED3 breathes slowly; when the USB is plugged in, the LED3 breathes slowly; fully charged but the USB is still plugged in, LED3 is lit for longer, but the LED brightness is higher than the micro-brightness.

The LED3 can also indicate the current electric quantity, and when the voltage is lower than 3.4V, the LED3 flashes to remind a user that the battery electric quantity is low and timely charges.

Illustratively, when the multifunction K song device 10 is plugged onto a smart host or USB charger through the USB interface 44 and is charging the lithium battery 43, the LED3 breathes slowly, alerting the user that the device is being charged through the USB interface.

The LED indicator lamp assembly lamps are connected to PWM pins of the system chip SOC, so that each lamp can adjust PWM pulse width through software logic, and the aim of adjusting the brightness of the LED lamp in real time is achieved.

The system on chip SOC is powered by a lithium battery 43, the anode of the lithium battery 43 being connected to an analog voltage adoption port (ADC pin) of the system on chip SOC for monitoring the battery voltage in real time.

Because the system chip SOC integrates MCU (single chip microcomputer), bluetooth audio transceiver, USB audio transceiver, audio processing and other functions, and further integrates FM transmitting, UHF receiving, 2.4G transceiver or 5.8G audio transmitting functions, the power consumption of the device is greatly reduced, meanwhile, the integrated design of the system chip SOC can conveniently expand the wireless microphone function, bluetooth music playing function and voice effect processing function of the pull rod loudspeaker box, a user does not need to be specially provided with a heavy professional microphone receiver, a professional tuning console and professional power amplifier equipment, so that the appearance of the multifunctional K song equipment 10 can be designed to be small and fashionable, and the indoor or outdoor K song and live broadcast functions can be easily realized by only configuring the pull rod loudspeaker box by the multifunctional K song equipment 10 provided by the embodiment of the application.

Fig. 2 is an audio path and control logic diagram of the multifunctional K song device 10 according to an embodiment of the present application. As shown in fig. 2, in the control system of the system on chip SOC of the multifunctional K song device 10 according to the embodiment of the present application, a bluetooth audio module 401, a USB audio module 402, a wireless receiving module 403, an audio processing module 404, a voice canceling module 405, a prompt tone playing module 406, a mixing module 407, an audio transmitting module 408, an analog audio output module 409, and a USB audio uploading module 410 are built.

The bluetooth audio module 401 is used for receiving music audio signals transmitted by the upper computer through bluetooth.

The USB audio module 402 is configured to receive a music audio signal from the host computer through a USB port.

The wireless receiving module 403 is configured to receive a voice from the wireless microphone, and the received voice is called a dry voice.

It should be understood that the multifunctional K song device 10 provided in the embodiment of the present application has the wireless receiving module 403 built therein, and the receiving function of the wireless microphone is always present in any scene and any mode.

In one possible embodiment, for a wireless microphone in the UHF band, the user may press the key_2 KEY for a long time to enter the sweep function, which is described in detail in the key_2 sweep function description above.

The sound effect processing module 404 is configured to perform sound effect processing on human voice or audio, and the human voice after the dry sound passes through the sound effect processing module is called wet sound.

In a possible embodiment, the user can switch the preset 6 sound effects by pressing key_3 for a short time, and can adjust the volume of the voice by pressing key_4 and key_5 for a long time.

The voice cancellation module 405 is configured to perform voice cancellation processing on the music audio signal to obtain an accompaniment audio signal.

The alert tone playing module 406 is configured to play a corresponding alert tone.

In one possible embodiment, a user key or internal event triggers the alert tone playing module 406, such as a bluetooth connect/disconnect event, to alert "bluetooth connected", "bluetooth disconnected", to play the corresponding alert tone, and the wet sound and accompaniment may pause the output while the alert tone is being played.

The mixing module 407 is configured to mix the wet sound and accompaniment, or mix the wet sound, accompaniment and cue sound, and output a mixed audio signal after mixing.

The analog audio output module 409 is for outputting a mixed audio signal through analog audio.

The audio transmission module 408 is configured to output the mixed audio signal via wireless audio transmission.

The USB audio upload module 410 is configured to upload the mixed audio signal to the smart host through the USB interface when the SW1 is switched to the USB power range.

The analog audio output module 409, the audio transmission module 408, and the USB audio upload module 410 may be collectively referred to as an output module.

As shown in fig. 2, in the audio path of the multifunctional K song device 10 provided by the embodiment of the present application, there are 2 music sources, which are bluetooth audio and USB audio respectively.

When the multifunctional K song device 10 is switched to the bluetooth gear through SW1, the bluetooth audio module 401 receives a music audio signal or an accompaniment audio signal transmitted from the upper computer.

When the multifunctional K song device 10 is switched to the USB play back gear through SW1, the USB audio module 402 receives a music audio signal or an accompaniment audio signal transmitted from the host computer.

After the music audio signal or the accompaniment audio signal transmitted from the upper computer enters the multifunctional K song device 10, the user can turn on or off the mute function by pressing key_2 for a short time. When the voice cancellation is started, the music audio signal is subjected to the voice cancellation processing through the voice cancellation module 405, and whether the voice signal is input into the wireless microphone is monitored in real time through the wireless receiving module 403, so that the automatic switching of the original singing and guiding modes is realized, and the guiding/original singing function is detailed in the KEY_2 voice cancellation function description; when the voice cancellation function is turned off, the voice cancellation module is bypassed and the music audio signal or accompaniment audio signal content is identical.

The wireless receiving module 403 receives the voice signal (may be called as dry voice) transmitted from the wireless microphone end, and the voice effect processing module 404 performs voice effect processing on the voice signal, including echo, reverberation, equalization, noise reduction, howling prevention and other processing; six sound effects including original sound, concert sound effect, theater sound effect, KTV sound effect, popular sound effect and recording studio sound effect are arranged and combined, and the six sound effects are actually arranged and combined by parameters such as echo, reverberation and equalization, and are cured into a system on chip SOC after fine tuning by a tuning disc before delivery. The user can circularly switch six sound effects through the key_3 sound effect KEY to obtain wet sound with different sound effects. The six types of sound effects enumerated above are merely examples, and other sound effect processing involved are also within the scope of the present application.

The alert tone playing module 406 plays the corresponding alert tone.

The music audio signal or the accompaniment audio signal is mixed with the wet sound after the sound effect processing by the mixing module 407, and then the mixed audio signal is output.

After the wet sound and/or accompaniment mixed stream is processed by the mixing module 407, the audio after mixing is output through the analog audio output module 409 and the audio transmitting module 408 at the same time. A cue tone may be added during mixing, and the wet sound and/or accompaniment audio signal is paused when the cue tone is output.

Only when SW1 is switched to the USBMic gear, the audio after mixing is uploaded to the smart host through the USB audio upload module 410.

The Karaoke flow of the Karaoke method provided by the embodiment of the application is as follows:

s21, switching to a Bluetooth gear through SW1 or switching to a USB play back gear through SW1, and acquiring a music audio signal transmitted by an upper computer;

s22, performing voice eliminating processing on the music audio signal by pressing KEY_2 for a short time, and automatically switching a singing guiding mode;

s23, receiving human voice (or audio) transmitted from the wireless microphone;

s24, switching 6 preset sound effects by short pressing KEY_3 or adjusting the volume of the voice by long pressing KEY_4 and KEY_5, and playing corresponding prompt sounds;

s25, mixing the wet sound and accompaniment through the sound mixing module 47;

s26, the audio after mixing is output through the analog audio output module 409 and the audio transmitting module 408 at the same time; or when the SW1 is switched to the USBMic gear, the audio after mixing can be uploaded to the intelligent host through the USB.

In one possible embodiment, a cue tone may be added during mixing, and the wet sound and/or accompaniment audio signals are paused when the cue tone is output.

In one possible embodiment, the control method of the multifunctional K song device provided by the application comprises the following steps: determining that the receiving mode is a wireless microphone receiving mode according to a first operation acted on the first key; determining the current processing as determining the sound effect according to the second key; sweep frequency is carried out according to a wireless microphone receiving mode, and a human voice signal emitted by the wireless microphone is received; performing sound effect processing on the voice signal according to the current processing to obtain wet voice or mixed audio; according to the gear of the first multi-bit switch, the working in one of a Bluetooth mode, a USB microphone mode or a USB sound box mode is determined, and wet sound or mixed audio is output; and outputting wet sound or mixed audio to different sound production devices for playing, so as to finish K songs.

Fig. 3 is a system frame of the multifunctional K song device in the USBMic mode according to the embodiment of the present application. As shown in fig. 3, the multifunctional K song device 10 requires functional support of the smart host in the USBMic mode. The multifunctional Karaoke device 10 and the intelligent host form a multifunctional wireless Karaoke system.

As shown in fig. 3, the wireless receiving module 403 receives a human voice signal, i.e., a dry voice, transmitted from the wireless microphone. For a wireless microphone in the UHF frequency band, a user can enter the frequency sweeping function by pressing KEY_2 for a long time. The dry sound is subjected to sound effect processing by the sound effect processing module 404, a user can switch 6 sound effects by short pressing KEY_3 to obtain wet sound, the volume is adjusted by long pressing KEY_4/KEY_5, the user can trigger the prompt sound playing module 406 to generate prompt sound when pressing a button, the prompt sound and the wet sound are not output at the same time, and the prompt sound and the wet sound are uploaded to the intelligent host by the USB audio uploading module 410. Of course, the wet sound may be sent out through both the audio transmitting module 408 and the analog audio module 409, which is not an essential function in the USBMic mode, and is an optional function.

The accompaniment/music processing module 601 of the intelligent host in the USBMic mode is responsible for decoding audio files to generate real-time music (accompaniment) data streams, the sound collecting module 602 is responsible for collecting wet sound data streams transmitted by the multifunctional K song device 10 through the USB interface in real time, the host mixing module 603 performs mixing processing on the wet sound and the accompaniment audio signals, and the output mixed audio signals drive the loudspeaker of the intelligent host to play in real time through the playing module 604. Meanwhile, the wet sound collected by the sound collection module 602 is scored by the K song scoring module 605 in real time, and can be recorded into K song works through the K song work recording module 606.

Fig. 4 is a schematic diagram of a family K song scenario in which the sound generating device is a speaker of the television. As shown in fig. 4, in this application scenario, the main function of the multifunctional K song device 10 provided in the embodiment of the present application is voice signal receiving and processing. The transmission mode between the multifunctional K song device 10 and the wireless microphone 11 may be any one of FM, VHF band, UHF band, 2.4G, 5.8G, or bluetooth (low delay bluetooth). The intelligent sound generating device 12 is a speaker or a car machine of the intelligent television. Illustratively, when the intelligent sound generating device 12 is an intelligent television, the intelligent television is provided with a K song APP, and is responsible for video decoding and accompaniment decoding of a K song program source, real-time acquisition of a voice signal and mixing of the voice signal and accompaniment of a USB interface, and then the mixed audio signal is directly written into a sound card of the intelligent television, and the intelligent television plays the mixed audio through a speaker of the intelligent television, so that the purpose of realizing the K song by means of a speaker of a local speaker of the intelligent television is realized.

In the scenario shown in fig. 4, the multifunctional K song device 10 provided in the embodiment of the present application performs the following steps:

s41, determining a voice receiving mode, receiving a voice signal emitted by the wireless microphone 11, and performing sound effect processing on the voice signal to obtain wet voice; the human voice receiving mode of the multi-function K song apparatus 10 may be any one of FM, VHF band, UHF band, 2.4G, 5.8G, or bluetooth (low delay bluetooth). The wireless microphone 11 side plays an audio transmitting role, and the multifunctional K song device 10 plays a receiving role.

In a possible embodiment, for a wireless microphone in the UHF band, a user may enter a sweep function by pressing the key_2 KEY of the multifunctional K song device 10 for a long time, and determine whether a valid UHF wireless microphone signal exists by determining the intensity value of the received UHF signal; after capturing an effective UHF wireless microphone signal, the multifunctional K song device 10 determines the current receiving frequency as the receiving frequency of the UHF wireless receiving module 403, and stores the frequency; the human voice signal transmitted from the wireless microphone 11 is received at the current reception frequency.

In one possible embodiment, for wireless microphones where a determined UHF reception frequency already exists, the multifunction K-song device 10 receives a human voice signal (dry voice) emitted by the wireless microphone 11 at the determined reception frequency.

S42, the human voice signal (dry voice) is subjected to sound effect processing to obtain wet voice. Illustratively, the user may switch 6 sound effects for wet sound by pressing key_3 for a short time and adjust the wet sound volume by pressing key_4/key_5 for a long time.

S43, determining an output mode, and uploading wet sound to the intelligent television according to the output mode. Illustratively, when the user switches SW1 to the USBMic range, the output mode is determined to be the USBMic mode.

In this scenario, the multifunctional K song device 10 provided by the embodiment of the application does not need to be externally connected with an active sound box, and sounds by means of a speaker of the smart television. The equipment is convenient and simple to connect, only the matched wireless microphone 11 and the multifunctional K song equipment 10 provided by the embodiment of the application are needed, and the whole K song system is low in cost.

In the scenario shown in fig. 4, the intelligent sound generating device 12 may also be a smart phone or a tablet computer equipped with K song software, and all devices for performing real-time collection of human voice, mixing of human voice and accompaniment and playing of mixed sound can be matched with the multifunctional K song device 10 through a USB interface to form a K song system, so as to realize K songs.

The scene can also be extended to another mode of vehicle-mounted K song scene, provided that: the same as the intelligent television requires that a special K song APP is installed on the vehicle navigation host, the multifunctional K song device 10 provided by the embodiment of the application is inserted into a USB interface of the vehicle navigation host, and the device is switched to a USBMic mode.

Fig. 5 is a schematic diagram of a mobile phone K song or a vehicle-mounted K song scene. As shown in fig. 5, in this application scenario, the main functions of the multifunctional K-song apparatus 10 provided in the embodiment of the present application include voice signal receiving and processing and accompaniment receiving and processing, and voice and accompaniment mixing output.

The transmission mode between the multifunctional K song device 10 and the wireless microphone 11 provided by the embodiment of the application can be any one of FM, VHF frequency band, UHF frequency band, 2.4G, 5.8G or bluetooth (low-delay bluetooth), the wireless microphone 11 end plays an audio transmitting role, and the multifunctional K song device 10 plays a receiving role.

The intelligent sound generating device 14 may send accompaniment audio data to the multifunctional K song device 10 provided by the embodiment of the present application in real time through a USB interface or a wireless bluetooth manner. It should be appreciated that bluetooth can only receive audio data from one device in the same scenario due to the limited bandwidth of bluetooth data. If the wireless microphone 11 is transmitting audio using bluetooth, the intelligent sound device 14 can only use the USBplayback mode and vice versa. The smart sound device 14 includes smart terminal devices such as smart phones, tablets, and personal computers.

The wireless microphone 11 transmits the voice signal and accompaniment audio sent by the intelligent sounding device 14, after sound effect processing and sound mixing are carried out in the multifunctional K song device 10, the voice signal is output to the outdoor active sound box 13 for playing in a mode of 3.5mm audio or FM transmission, and the active sound box 13 has an FM receiving function.

The active speaker 13 in the above scenario may be a pull rod type speaker widely used in the market, or a car audio, or a 3.5mm interface listening earphone.

In this scenario, when the active speaker 13 is a vehicle-mounted speaker, the multifunctional K song device 10 provided in the embodiment of the present application may transmit a K song mix by means of FM, and the user may adjust the vehicle-mounted radio to a specified receiving frequency, so that the user may play the sound in real time through the vehicle-mounted speaker. In this way, the wireless microphone 11 and the multifunctional Karaoke device 10, and the multifunctional Karaoke device 10 and the vehicle-mounted sound are connected in a wireless manner, so that the wired constraint is completely eliminated. Of course, if the user pursues better sound quality experience, the 3.5mm audio of the multifunctional K song device 10 provided by the embodiment of the present application may be output to the AUX input port of the vehicle audio, and the vehicle audio needs to be switched to the AUX input mode.

In the scenario shown in fig. 5, the multifunctional K song device 10 provided by the embodiment of the present application performs the following steps:

s51, determining a voice receiving mode, receiving a voice signal sent by the wireless microphone 11, and performing sound effect processing on the voice signal to obtain wet voice; the human voice receiving mode of the multifunction K song device 10 may be any one of FM, VHF band, UHF band, 2.4G, 5.8G, or bluetooth (low delay bluetooth) mode;

S52, determining a music receiving mode, receiving a music audio signal in the music receiving mode, and processing the music audio signal to an accompaniment audio signal; and mixing the human voice signal and the accompaniment audio signal to obtain mixed audio.

The music receiving mode may be any one of a usbplay or a bluetooth mode. Illustratively, when the user switches SW1 to the usbplay back gear, determining that the music receiving mode is the usbplay back mode; when the user switches SW1 to the bluetooth range, it is determined that the music reception mode is the bluetooth mode.

S53, determining an output mode, and outputting the mixed audio in the output mode; the output mode includes any one of a 3.5mm audio or FM transmission mode. Illustratively, when the user shifts SW2 into gear, the output frequency of the FM transmission mode is determined.

In a scenario where the wireless microphone 11 transmits a voice signal by using bluetooth and the intelligent sounding device 14 transmits music audio or accompaniment audio data by using USB, the multifunctional K song device 10 may receive the voice signal in a bluetooth mode and receive the music audio or accompaniment audio data in a USB playback mode, and the output mode may be an FM transmission mode.

In a scenario where the wireless microphone 11 is one of FM, VHF, 2.4G, or 5.8G microphones, the intelligent sound generating device 14 transmits music audio or accompaniment audio data using bluetooth, the multi-function K-song device 10 may receive a human voice signal in one of FM, VHF, 2.4G, or 5.8G microphones, receive music audio or accompaniment audio data in bluetooth mode, and output in 3.5mm audio mode.

In a scenario where the wireless microphone 11 transmits the voice signal with FM, VHF, 2.4G, 5.8G, and the intelligent sound generating device 14 transmits the music audio or accompaniment audio data with bluetooth, the multifunctional K song device 10 may receive the voice signal in one of FM, VHF, 2.4G, 5.8G, receive the music audio or accompaniment audio data in bluetooth mode, and output in USBMic transmitting mode.

The multifunctional K song device 10 provided by the embodiment of the application can also extend and expand some functions.

Illustratively, the multifunctional K song device 10 has a built-in capacitive microphone, and can be used as a vehicle-mounted multifunctional bluetooth device, and establishes a bluetooth connection with a mobile phone of a vehicle owner to play the role of a multifunctional vehicle-mounted bluetooth hands-free phone. In the driving process, the user can answer and dial the call through the device.

Illustratively, the multifunctional K song device 10 incorporates a condenser microphone, which may also implement the functionality of a voice-operated cell phone. Through the button subassembly of multi-functional K song equipment 10, the voice assistant of wake-up cell-phone, multi-functional K song equipment 10 can collect user's pronunciation in real time and transmit for the cell-phone, realizes the function that the pronunciation controlled the cell-phone, for example can say to multi-functional K song equipment 10: "navigate to XXX Address", "I want to listen to XXX songs", voice controls the handset to perform the tasks of navigating or playing songs, etc. The function can greatly liberate hands, and avoid the user from operating the mobile phone by hands in the driving process, thereby reducing the sounding of traffic accidents.

The off-line voice recognition module can be added in the multifunctional K song equipment 10, the voice recognition is not dependent on the voice assistant of the intelligent sound equipment 14 any more, but directly analyzes the voice command through the voice recognition module arranged in the multifunctional K song equipment 10, converts the voice command into the function of a local key or switch, and can also achieve the purposes of freeing hands and controlling the equipment through voice.

In one possible embodiment, the multi-function K song device 10 further includes: the built-in capacitor microphone is used for collecting voice instructions of a user in real time; the system chip recognizes a voice instruction of a user to obtain first voice, wherein the first voice is used for indicating the operation of the user; acquiring second voice according to the trigger signal of at least one key or internal event, wherein the second voice is used for prompting the current operation or internal event of the user; outputting the first voice or the second voice.

The voice input parties of the two scenes can be an external wireless microphone or a built-in capacitor microphone, and can be flexibly designed according to actual scene requirements.

The multifunctional K song device 10 provided by the embodiment of the present application extends and expands the basic functions thereof, which belong to the protection scope of the application embodiment.

The multifunctional K song equipment 10 provided by the embodiment of the application is fashionable and small in appearance, can conveniently expand the wireless microphone function, the Bluetooth music playing function and the voice effect processing function of the voice of the pull rod loudspeaker box, and can easily realize indoor or outdoor K songs and live broadcasting functions without specially providing a heavy professional microphone receiver, a professional sound console and professional power amplifier equipment for users.

Fig. 6 is a schematic diagram of a family K song scenario in which the sound generating device is an external active speaker. Compared to the family K song scenario shown in fig. 4, the family K song scenario shown in fig. 6 requires an active speaker 15 to be externally connected. Meanwhile, the intelligent sound generating device 14 does not need to install a special K song APP, and any APP capable of providing accompaniment can be used for realizing the K song function.

As shown in fig. 6, in this application scenario, the multifunctional K-song apparatus 10 provided in the embodiment of the present application mainly functions as human voice receiving and processing, accompaniment receiving and processing, and mixing output of human voice and accompaniment. The working principle is basically similar to that of the scene shown in fig. 5, and the steps are not repeated.

In the scenario shown in fig. 6, implementation of a specific K song function of the multifunctional K song device system provided by the embodiment of the application does not need to rely on a special K song APP. The K song effect of the external active speaker 15 is generally better than the effect of the television set with its own speaker. The general intelligent television is limited by the volume, the loudspeaker is smaller in volume, and the sound effect is general.

Those of ordinary skill would further appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, in computer software, or in a combination of the two, and that the elements and steps of the examples have been generally described in terms of function in the foregoing description to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Those of ordinary skill in the art may implement the described functionality using different approaches for each particular application, but such implementation is not considered to be beyond the scope of the present application.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The foregoing detailed description of the embodiments of the present application has been presented for purposes of illustration and description, and it should be understood that the foregoing is by way of illustration and description only, and is not intended to limit the scope of the embodiments of the present application.

Claims

1. A multi-function K song apparatus, comprising:

the key assembly at least comprises a first key and a second key, wherein the first key is used for determining the receiving frequency of the wireless microphone according to a first operation; the second key is used for determining that the current processing is sound effect processing; each key in the key assembly is connected with the system chip;

a multi-position switch assembly including at least a first multi-position switch including at least first, second and third gear positions; the first multi-bit switch is connected with the system chip;

the wireless receiving device is used for receiving the human voice signal transmitted by the wireless microphone according to the receiving frequency of the wireless microphone; the wireless receiving device is connected with the system chip;

The system chip is used for carrying out the sound effect processing on the human voice signal according to the current processing to obtain wet voice or mixed audio; according to the gear of the first multi-bit switch, the working in one of a Bluetooth mode, a USB microphone mode or a USB sound box mode is determined, and the wet sound or the mixed audio is output; and the output component is used for outputting the wet sound or the mixed audio to different sound production devices for playing so as to finish K songs.

2. The multi-function K song device of claim 1, wherein the wireless microphone comprises an FM microphone, a VHF band microphone, a UHF band microphone, a 2.4G, 5.8G, or a bluetooth microphone.

3. The multi-function K song apparatus of claim 1, wherein the output assembly comprises an audio transmitter for transmitting the wet sound or the mixed audio, the transmission mode comprising FM, VHF band, UHF band, 2.4G, 5.8G, or bluetooth transmission mode.

4. A multi-function K song apparatus according to claim 3, wherein said multi-position switch assembly further comprises:

a second multi-position switch comprising a plurality of gears for determining a transmission frequency at which the audio transmitter transmits the wet sound or mixed audio in FM; the system chip is further configured to: and determining the transmitting frequency when the wet sound or the mixed audio is transmitted in FM according to the gear position of the second multi-bit switch.

5. A multi-function K song apparatus according to claim 3 wherein the output assembly comprises an analog audio output module.

6. The multi-function K song apparatus of claim 1 wherein said output assembly includes at least one LED indicator light for indicating said at least one mode of operation; or indicate the current charge.

7. The multi-function K song apparatus of claim 1, further comprising:

the built-in capacitor microphone is used for collecting voice instructions of a user in real time; the system chip is further configured to: recognizing a voice instruction of the user to obtain first voice, wherein the first voice is used for indicating the operation of the user; acquiring second voice according to a trigger signal of at least one key or internal event, wherein the second voice is used for prompting the current operation or internal event of a user; outputting the first voice or the second voice.