CN109471609B - Karaoke projection integrated machine and Karaoke method thereof - Google Patents
Karaoke projection integrated machine and Karaoke method thereof Download PDFInfo
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Abstract
The invention provides a Karaoke projection all-in-one machine and a Karaoke projection method thereof, wherein the Karaoke projection all-in-one machine comprises: the sound input module comprises a microphone and a wireless transmitting chip; the Ksinging module comprises a first main control chip, a USB sound card connected with the first main control chip, a wireless receiving chip connected with the wireless transmitting chip in a wireless way, a first ADC converter and a first DAC converter; the projection module comprises a second main control chip and a path selection switch which are in communication connection with the Karaoke module; the control end of the path selection switch is connected with the second main control chip, and the first controlled end of the path selection switch is connected with the first main control chip; the sound output module is connected to the second controlled end of the path selection switch. The invention has small volume and convenient carrying, and the K song projection integrated machine provided by the invention can carry out family entertainment K song without paying additional K song cost, has low action cost and time cost, can avoid noisy closed environment, and greatly improves user experience.
Description
Technical Field
The invention belongs to the technical field of Karaoke, and particularly relates to a Karaoke projection integrated machine and a Karaoke method thereof.
Background
Along with the development of science and technology and the improvement of the living standard of people, K songs become a very common entertainment and recreation living mode of friends gathering or relatives gathering, and the entertainment mode can improve the emotion among people and can also release pressure; however, the KTV song removal and K song removal have the defects that: firstly, the singing is inconvenient and the singing can not be performed anytime and anywhere, so that the action cost and the time cost of the user for singing are increased; in addition, the space of KTV is airtight, the environment is noisy, people who prefer silence but like music (especially the elderly or young groups) often go far away, and furthermore, the consumption price of KTV can also become a barrier for the actions of middle and low consumer groups. Thus, the home karaoke system is increasingly becoming the choice for more households.
However, the device core components of the home K song system must have a screen, a microphone, and sound. In the prior art, a household K song system mainly comprises the following two schemes:
the first family K song system is based on a television and matched with a song ordering machine, and a pair of microphones are additionally arranged. The microphone is in butt joint with the song requesting machine, and the song requesting machine is used for processing reverberation of microphone human voice and background sound, and the audio and video content of K song is displayed by means of the television. The disadvantage of this solution is that: because all audio and video contents are required to depend on the output of the television, the K song scene is required to be matched with the television to be used, so that portability is insufficient, in addition, the size of the main stream television is about 45-65 inches, and the sound effect of the television is also uneven, so that the K song requirement of a customer on a large screen, high tone quality and portability cannot be met.
The second family K song system relies on a projector with a microphone with an external dongle. The microphone and the projector are connected with each other through an external dongle, and the sound of the voice and the background accompaniment sound are reverberated through the projection of the internal K song APP (such as the national K song) and then the audio and video contents of the K song are output through the display interface and the audio interface of the projector. The scheme has the following defects: all sound effects such as reverberation, special effects and the like are required to be processed by software of a main chip end of the projector, and the final processing effect of the sound effects has obvious delay, so that the sound of a person and accompaniment are easily asynchronous. And system resources are very occupied, so that the system is blocked.
Disclosure of Invention
The invention aims to provide a Karaoke projection all-in-one machine and a Karaoke projection method thereof, which are used for solving the technical problems.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a K sings projection all-in-one, include:
a housing for supporting and protecting an internal frame installed in the housing;
the voice input module comprises a microphone for acquiring voice data and a wireless transmitting chip, wherein the wireless transmitting chip is used for outputting the voice data acquired by the microphone through wireless signals;
the KGem module is arranged in the shell and comprises a first main control chip, a USB sound card connected with the first main control chip, a wireless receiving chip connected with the wireless transmitting chip in a wireless way, a first ADC converter and a first DAC converter; the wireless receiving chip is connected with the first main control chip through the first ADC converter; the wireless receiving chip receives the voice data sent by the wireless sending chip;
the projection module is arranged in the shell and used for projecting the video content to be played, and comprises a second main control chip and a path selection switch which are in communication connection with the Ksong module; the second main control chip is connected with the first main control chip through the USB sound card; the control end of the path selection switch is connected with the second main control chip, and the first controlled end of the path selection switch is connected with the first main control chip;
the sound output module is installed in the shell, the sound output module is connected to the first main control chip, and the sound output module is further connected to the second controlled end of the path selection switch.
In an embodiment, the sound output module includes a sound effect processing chip connected to the first main control chip, an audio power amplification chip connected to the sound effect processing chip, and a loudspeaker connected to the audio power amplification chip, where the sound effect processing chip and the audio power amplification chip are installed in the housing, and the loudspeaker is adapted to be installed on a positioning hole provided on the housing.
In an embodiment, the K song projection integrated machine further comprises a power module for providing electric energy, wherein the power module comprises one or more of a battery built in or arranged outside the shell, a power wire capable of being connected with an external power supply or a power socket arranged on the shell; and/or
The shell is also provided with a handle for extracting the K song projection integrated machine, and the handle is detachably connected to the shell through fixing devices arranged on two opposite sides of the shell; and/or
The shell is also provided with a mounting hole for fixedly mounting the Karaoke projection integrated machine on an external member, and the mounting hole is a threaded hole; and/or
The shell is provided with a third USB interface for plugging wireless receiving equipment, and the wireless receiving equipment is connected with the second main control chip; the wireless receiving equipment is used for wirelessly receiving a control instruction of the external sound console and transmitting the control instruction to the second main control chip.
In an embodiment, the first main control chip is provided with a UART interface, and the second main control chip is connected to the first main control chip through the UART interface; and/or
The first main control chip is provided with an I2S interface, and a first controlled end of the path selection switch is connected with the first main control chip through the I2S interface.
In an embodiment, a first USB interface is disposed on the first main control chip, a second USB interface is disposed on the second main control chip, the USB sound card is connected to the first main control chip through the first USB interface, and the USB sound card is connected to the second main control chip through the second USB interface; and/or
The wireless receiving chip is a U-section receiving chip; and/or
The first main control chip is provided with an R/L interface, and the first main control chip is connected with the sound output module through the R/L interface.
In an embodiment, the first master control chip is provided with a first GPIO interface, the second master control chip may be connected to the first master control chip, and the second master control chip may transmit a control instruction to the first master control chip through the first GPIO interface; and/or
The second main control chip is provided with a second GPIO interface, and the control end of the path selection switch is connected with the second main control chip through the second GPIO interface.
The invention also provides a Karaoke method of the Karaoke projection integrated machine, which comprises the following steps of:
when a K song instruction is received, the first main control chip receives a first digital signal sent by the first ADC converter and a second digital signal sent by the second main control chip; the first digital signal is a digital signal which is formed by the steps that after the wireless transmitting chip acquires the voice data acquired by the microphone, the voice data is transmitted to the first ADC through the wireless receiving chip, and the voice data is converted through the first ADC; the second digital signal is a digital signal corresponding to the appointed song accompaniment contained in the K song instruction obtained by the second main control chip;
the first main control chip generates a third digital signal after carrying out reverberation processing on the first digital signal and the second digital signal;
the first main control chip converts the third digital signal into a first analog signal through the first DAC converter, and then sends the first analog signal to the sound output module for playing.
In an embodiment, the sending the first analog signal to the sound output module for playing includes:
the first main control chip sends a first analog signal to the sound effect processing chip;
the sound effect processing chip converts the first analog signal into a fourth digital signal and performs sound effect processing on the fourth digital signal;
the audio processing chip converts the fourth digital signal after audio processing into a second analog signal, then sends the second analog signal to an audio power amplification chip, and the audio power amplification chip amplifies the second analog signal and plays the second analog signal after the audio signal is amplified through a loudspeaker; or (b)
The audio processing chip sends the fourth digital signal after audio processing to the audio power amplification chip, and the audio power amplification chip amplifies the fourth digital signal and then converts the fourth digital signal after audio signal amplification into a second analog signal and plays the second analog signal through a loudspeaker.
In an embodiment, when the K song command is received, the first main control chip receives a second digital signal sent by the second main control chip, including:
when a Karaoke instruction is received, the first main control chip receives a second digital signal sent by the second main control chip through the USB sound card; or (b)
When a Karaoke instruction is received, the first main control chip receives the second digital signal sent by the first DAC converter; wherein the second digital signal is transmitted to the first host chip via the following process: when a Karaoke command is received, the second main control chip controls a first controlled end of a path selection switch through a second GPIO interface to be connected with the first main control chip, and sends a third analog signal corresponding to appointed song accompaniment contained in the Karaoke command to a first DAC (digital-to-analog converter) through the first controlled end of the path selection switch and an I2S interface in sequence, and after the first DAC converts the third analog signal into a second digital signal, the first main control chip receives the second digital signal converted by the first DAC.
In an embodiment, when a control instruction is received, the first main control chip performs sound effect processing on the first digital signal or/and the second digital signal according to the control instruction; the control instruction is that the second main control chip sends the control instruction to the first main control chip through a USB sound card or a UART interface.
The K song projection all-in-one machine and the K song method thereof provided by the invention have the beneficial effects that: compared with the prior art, the K song projection integrated machine provided by the invention has the advantages that the K song modules are integrated with a plurality of interfaces, the K song modules are detachably connected with the projection module and the sound output module through different interfaces, the K song modules can respond to control instructions such as sound effect control, sound changing control and the like transmitted by the projection module, and meanwhile, reverberation is realized after accompanying sound transmitted by the projection module and voice data wirelessly transmitted by the sound input module are processed, and then the sound is played through the sound output module. The invention has small volume and convenient carrying; the reverberation and sound effects are processed through the K modules, so that the processing efficiency is improved, the load of the projection module is reduced, and the delay of sound playing is reduced; and the K song projection integrated machine provided by the invention can carry out family entertainment K song without paying additional K song cost, has low action cost and time cost, can avoid noisy closed environment, and greatly improves user experience.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a Kg projection all-in-one machine according to an embodiment of the present invention;
fig. 2 is a flowchart of a karaoke method of a karaoke projection all-in-one machine according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The invention provides a Karaoke projection all-in-one machine and a Karaoke method thereof. Referring to fig. 1, the K song projection all-in-one machine includes.
A housing (not shown) for supporting and protecting an internal frame installed in the housing; the shell is made of plastic, metal or other materials with certain protection intensity, a protection layer (not shown) can be further arranged on the outer surface of the shell, and the protection layer is preferably a leather protection layer with texture, so that better experience can be brought to users.
The voice input module 10 comprises a microphone 101 for acquiring voice data and a wireless transmitting chip 102, wherein the wireless transmitting chip 102 is used for outputting the voice data acquired by the microphone 101 through wireless signals; it should be appreciated that, in another embodiment, the sound input module 10 may further include a connection line (not shown) capable of connecting the first ADC converter 204 of each of the K modules, and the voice data collected by the microphone 101 may be transferred to the first ADC converter 204 for processing without passing through the wireless transmitting chip 102 and the wireless receiving chip 203, and may be used as a standby when the wireless device is not available.
A K song module 20 installed in the housing and including a first main control chip 201, a USB (Universal Serial Bus ) sound card connected to the first main control chip 201, a wireless receiving chip 203 wirelessly connected to the wireless transmitting chip 102, a first ADC (Analog-to-Digital Converter) converter, and a first DAC (digital-to-Analog converter, digital to Analog converter) converter; the wireless receiving chip 203 is connected to the first main control chip 201 through the first ADC converter 204; the wireless receiving chip 203 receives the voice data transmitted by the wireless transmitting chip 102.
The first main control chip 201 of the K song module 20 adopts a professional DSP (digital signal processing ) audio processing chip, two wireless receiving chips 203 are preferably U-section (600 MHZ-650 MHZ) receiving chips, and meanwhile, the first ADC converters 204 are also two, so that two-way ADC conversion is supported, and meanwhile, preferably, other interfaces (such as a USB interface, an I2S interface, a UART interface, a GPIO interface, etc.) may be further provided on the first main control chip 201 according to the requirements for communication with the second main control chip 301. The first main control chip 201 is mainly used for controlling reverberation, sound variation, sound effects, etc., and supports various types of audio input/output channels, such as input or output of analog signals (analog audio signals), input or output of digital signals (digital audio signals) through the USB sound card 202, and input or output of analog signals through the I2S interface.
The projection module 30 is installed in the shell and is used for projecting the video content to be played, and comprises a second main control chip 301 and a path selection switch 302 which are in communication connection with the Ksong module 20; the second main control chip 301 is connected to the first main control chip 201 through the USB sound card 202; the control end 3021 of the path selection switch 302 is connected to the second main control chip 301, and the first controlled end 3022 of the path selection switch 302 is connected to the first main control chip 201. The second main control chip 301 adopts an ambogic T968 main control chip, and the optical machine matched with the projection module 30 can support 1080P resolution and 500 lumen brightness output when projecting the video content to be played.
The sound output module 40 is installed in the housing, the sound output module 40 is connected to the first main control chip 201, and the sound output module 40 is further connected to the second controlled end 3023 of the path selection switch 302.
The K song projection integrated machine of the invention integrates a plurality of interfaces in the built-in K song module 20, and is detachably connected with the projection module 30 and the sound output module 40 through different interfaces; referring to fig. 1, when a karaoke command is received, the karaoke module 20 processes the accompaniment sound transmitted by the projection module 30 and the voice data wirelessly transmitted by the voice input module 10 to achieve reverberation, and then plays the accompaniment sound through the voice output module 40. That is, when receiving the K song command, the first main control chip 201 receives the first digital signal sent by the first ADC converter 204 and the second digital signal sent by the second main control chip 301; the first digital signal is a digital signal obtained by the wireless transmitting chip 102 after acquiring the voice data acquired by the microphone 101, transmitting the voice data to the first ADC converter 204 through the wireless receiving chip 203, and converting the voice data by the first ADC converter 204; the second digital signal is a digital signal corresponding to the designated song accompaniment contained in the K song command acquired by the second main control chip 301; the first main control chip 201 generates a third digital signal after performing reverberation processing on the first digital signal and the second digital signal; the first main control chip 201 converts the third digital signal into a first analog signal through the first DAC 205, and then sends the first analog signal to the sound output module 40 for playing. Understandably, after the first main control chip 201 receives the first digital signal sent by the first ADC converter 204, the first digital signal may also be sent to the second main control chip 301 through the USB sound card 202, so that the second main control chip 301 performs K song scoring on the voice data corresponding to the first digital signal. Meanwhile, the K song module 20 may respond to the control instructions such as sound effect control and sound changing control transmitted by the projection module 30, and when receiving the control instructions, the first main control chip performs sound effect processing on the first digital signal or/and the second digital signal according to the control instructions; the control instruction is that the second main control chip sends the control instruction to the first main control chip through a USB sound card 202 or a UART interface. The control instruction may be a control instruction (such as a control instruction for adjusting an audio effect or a sound variation) sent by the external audio console, or a control instruction (such as a control mode of a DSP) sent by the second main control chip actively to realize functions of multi-scene audio effect, sound variation, microphone pairing, and the like.
The invention has small volume and convenient carrying; the reverberation and sound effects are processed through the K modules, so that the processing efficiency is improved, the load of the projection module 30 is reduced, and the delay of sound playing is reduced; and the K song projection integrated machine provided by the invention can carry out family entertainment K song without paying additional K song cost, has low action cost and time cost, can avoid noisy closed environment, and greatly improves user experience.
The Karaoke projection integrated machine realizes home entertainment Karaoke, gives consideration to application in scenes such as hosting lectures, and realizes reverberation processing of accompaniment of human voice and background by arranging the Karaoke module 20 in the Karaoke projection integrated machine, and finally plays the Karaoke through the sound output module 40, so that timeliness of sound playing can be reduced. Meanwhile, the invention also supports sound effect modes (acoustic, conference, KTV, concert, valley and the like) and sound changing modes (acoustic, boy, girl, doll sound, beast sound and the like) under different scenes, and the sound effect and sound changing can be controlled only by giving a control instruction to the K song module 20 through the projection module 30, so that customers can enjoy extremely large-screen K song experience without going out.
In an embodiment, referring to fig. 1, the sound output module 40 includes an audio processing chip 401 connected to the first main control chip 201, an audio power amplification chip 402 connected to the audio processing chip 401, and a speaker 403 connected to the audio power amplification chip 402, where the audio processing chip 401 and the audio power amplification chip 402 are installed in the housing, and the speaker 403 is adapted to be installed in a positioning hole provided on the housing.
In this embodiment, the first main control chip 201 sends a first analog signal to the sound effect processing chip 401; the sound effect processing chip 401 converts the first analog signal into a fourth digital signal and performs sound effect processing on the fourth digital signal; after the audio processing chip 401 converts the fourth digital signal after the audio processing into a second analog signal, the second analog signal is sent to the audio power amplification chip 402, and after the audio power amplification chip 402 amplifies the second analog signal, the second analog signal after the amplified audio signal is played through the speaker 403; or the sound effect processing chip 401 sends the fourth digital signal after the sound effect processing to the audio power amplification chip 402, and after the audio power amplification chip 402 amplifies the fourth digital signal, the fourth digital signal after the audio signal is amplified is converted into a second analog signal, and the second analog signal is played through the loudspeaker 403. The sound effect processing chip 401 is a HiFi-level DSP audio processing chip AK7755, and the data link between the sound output module 40 and the K song module 20 can be flexibly set up through the sound effect processing chip 401 and the audio power amplifier chip 402.
Understandably, the sound processing chip 401 further includes a second ADC converter (not shown) and a second DAC converter (not shown), where the second ADC converter may convert an analog signal transmitted to the sound processing chip 401 into a digital signal, and the second DAC converter may convert a digital signal to be processed in the sound processing chip 401 into an analog signal and then output the analog signal; therefore, in an embodiment, the voice data collected by the microphone 101 in the voice input module 10 may be directly converted into the first digital signal, and then directly sent to the second main control chip 301 without going through the K-song module 20 (in the present invention, when the K-song module 20 is not integrated or the K-song module 20 cannot be used), and meanwhile, the second main control chip 301 may simultaneously transmit the first digital signal and the designated song accompaniment (which may be transmitted in the form of an analog signal or a digital signal) to the sound effect processing chip 401 for performing the sound effect processing. Understandably, if the signals to be processed received by the sound processing chip 401 are all analog signals, the signals can be converted into digital signals by the second ADC converter and then sound processing is performed on the digital signals; if one part of the received signal to be processed is an analog signal and the other part is a digital signal, converting the part of the analog signal into the digital signal through a second ADC converter, and then mixing the converted digital signal with the other part of the digital signal to perform sound effect processing; if the received signals to be processed are all digital signals, directly performing sound effect processing on the digital signals; understandably, the digital signal after the above-mentioned sound effect processing is converted into an analog signal by the second DAC converter and then output to the audio power amplifier chip 402 for subsequent processing, which is not described herein.
It is understood that the second DAC converter and the second ADC converter may be integrated with the sound processing chip 401 as one chip, or may be disposed outside the sound processing chip 401 and communicatively connected to the sound processing chip 401.
In an embodiment, the K song projection integrated machine further includes a power module (not shown) for providing electric power, where the power module includes one or more of a battery built in or external to the housing, a power cord connectable to an external power source, or a power socket provided on the housing. After the power module provides electric energy, the K song projection all-in-one machine can normally operate.
In an embodiment, the housing is further provided with a handle (not shown) for extracting the K song projection integrated machine, and the handle is detachably connected to the housing through fixing devices (not shown) disposed on two opposite sides of the housing. Preferably, the handle is rotatable about the fixing means to adjust its placement position and also to be removed when the handle is not required.
In an embodiment, the casing is further provided with a mounting hole (not shown) for fixedly mounting the K song projection integrated machine on an external member, and the mounting hole is a threaded hole; that is, the K song projection integrated machine may be mounted on a fixing bracket (not shown) through the mounting hole, and the fixing bracket may be provided with a bolt adapted to the threaded hole, and it is understood that the mounting hole may be replaced by other forms of fixing devices, so long as the fixing device can be stably mounted on the fixing bracket.
In one embodiment, a third USB interface (not shown) for plugging in a wireless receiving device is disposed on the housing, and the wireless receiving device is connected to the second main control chip 301; the wireless receiving device is configured to wirelessly receive a control instruction of the external sound console (when receiving the control instruction of the external sound console, the first main control chip performs sound effect processing on the first digital signal or/and the second digital signal according to the control instruction, where the control instruction is sent by the second main control chip to the first main control chip through the USB sound card 202 or the UART interface), and transmit the control instruction to the second main control chip 301. And when receiving the K song command, the first main control chip 201 may also receive a second digital signal sent by the second main control chip 301 through the USB sound card 202. That is, the invention can be externally connected with the external sound console to carry out more perfect debugging on sound effects. It can be appreciated that the wireless receiving device can also be directly built in the K song projection integrated machine.
In an embodiment, a UART interface (not shown) is disposed on the first main control chip, and the second main control chip is connected to the first main control chip through the UART interface; in this embodiment, when a control instruction is received, the first main control chip performs sound effect processing on the first digital signal or/and the second digital signal according to the control instruction; the control instruction is that the second main control chip sends the control instruction to the first main control chip through a UART interface. In an embodiment, the first main control chip is provided with an I2S interface, and the first controlled end 3022 of the path selection switch 302 is connected to the first main control chip through the I2S interface. In this embodiment, when receiving the singing command, the first main control chip receives the second digital signal sent by the first DAC converter 205; wherein the second digital signal is transmitted to the first host chip via the following process: when receiving the karaoke command, the second main control chip controls the first controlled end 3022 of the path selection switch 302 through the second GPIO interface to connect with the first main control chip, and sends the third analog signal corresponding to the designated song accompaniment contained in the karaoke command to the first DAC converter 205 through the first controlled end 3022 and the I2S interface of the path selection switch 302 sequentially by the second control end 3021, and after the first DAC converter 205 converts the third analog signal into the second digital signal, the first main control chip 201 receives the second digital signal after the conversion by the first DAC converter 205. That is, since the first DAC converter 205 and the first ADC converter are present in the K song module, the K song module may process an analog signal (i.e., process an analog signal into and out of a digital signal), process a digital signal, and process a mixed signal of a digital signal and an analog signal (i.e., process an analog signal into a digital signal and process the mixed signal together with an original digital signal).
It is to be understood that the first DAC converter 205 and the first ADC converter 204 may be integrated in the first main control chip, or may be disposed outside the first main control chip and connected to the first main control chip in a communication manner.
In an embodiment, a first USB interface (not shown) is disposed on the first main control chip, a second USB interface (not shown) is disposed on the second main control chip, the USB sound card 202 is connected to the first main control chip through the first USB interface, and the USB sound card 202 is connected to the second main control chip through the second USB interface; the USB sound card 202 can be integrated in the first main control chip 201, and is connected with the second USB interface through the first USB interface arranged on the first main control chip 201, so that the volume of the Ksong projection integrated machine can be greatly reduced, and the portable device is convenient to carry.
In one embodiment, the wireless receiving chip 203 is a U-segment receiving chip; voice data may be received at frequencies of 600MHZ-650 MHZ.
In an embodiment, the first main control chip is provided with an R/L interface (not shown), and the first main control chip is connected to the sound output module 40 through the R/L interface. After the first main control chip 201 reverberates the voice data and accompaniment to a third digital signal, the first main control chip 201 converts the third digital signal into a first analog signal through the first DAC 205, and sends the first analog signal to the sound output module 40 for playing through the R/L interface.
In an embodiment, a first GPIO interface (not shown) is disposed on the first master control chip, the second master control chip may be connected to the first master control chip, and the second master control chip may transmit a control instruction to the first master control chip through the first GPIO interface; the first GPIO interface is a standby GPIO interface disposed on the first main control chip, so that the K song module 20 can be connected through the first GPIO interface when communicating with other external devices except the K song projection integrated machine. It is understood that the first main control chip and the second main control chip may also be connected through the first GPIO interface.
In an embodiment, a second GPIO interface (not shown) is disposed on the second main control chip, and the control end 3021 of the path selection switch 302 is connected to the second main control chip 301 through the second GPIO interface. The second GPIO interface is a GPIO interface arranged on the second main control chip, and in the K song projection all-in-one machine, the first main control chip and the second main control chip can be in communication connection with the second GPIO interface. For example, when receiving a karaoke command, the first main control chip receives the second digital signal sent by the first DAC converter 205; wherein the second digital signal is transmitted to the first host chip via the following process: when receiving the karaoke command, the second main control chip controls the first controlled end 3022 of the path selection switch 302 through the second GPIO interface to connect with the first main control chip, and sends the third analog signal corresponding to the designated song accompaniment contained in the karaoke command to the first DAC converter 205 through the first controlled end 3022 and the I2S interface of the path selection switch 302 sequentially by the second control end 3021, and after the first DAC converter 205 converts the third analog signal into the second digital signal, the first main control chip 201 receives the second digital signal after the conversion by the first DAC converter 205.
All or part of each module in the K song projection integrated machine can be realized by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules. It will be apparent to those skilled in the art that the above-described functional units or modules are merely illustrated in terms of division for convenience and brevity, and that in practical applications, the above-described functional units or modules may be allocated to different functional units or modules according to needs, i.e., the internal structure of the apparatus may be divided into different functional units or modules to perform all or part of the above-described functions.
The invention also provides a Karaoke method of the Karaoke projection integrated machine, referring to fig. 1 and 2, comprising the following steps:
s10, when a Karaoke instruction is received, the first main control chip 201 receives a first digital signal sent by the first ADC converter 204 and a second digital signal sent by the second main control chip 301; the first digital signal is a digital signal obtained by the wireless transmitting chip 102 after acquiring the voice data acquired by the microphone 101, transmitting the voice data to the first ADC converter 204 through the wireless receiving chip 203, and converting the voice data by the first ADC converter 204; the second digital signal is a digital signal corresponding to the designated song accompaniment contained in the K song command acquired by the second main control chip 301;
s20, after the first main control chip 201 carries out reverberation processing on the first digital signal and the second digital signal, a third digital signal is generated;
s30, after the first main control chip 201 converts the third digital signal into a first analog signal through the first DAC 205, the first analog signal is sent to the sound output module 40 for playing.
In one embodiment, the sending the first analog signal to the sound output module 40 for playing includes:
the first main control chip 201 sends a first analog signal to the sound effect processing chip 401;
the sound effect processing chip 401 converts the first analog signal into a fourth digital signal and performs sound effect processing on the fourth digital signal;
after the audio processing chip 401 converts the fourth digital signal after the audio processing into a second analog signal, the second analog signal is sent to the audio power amplification chip 402, and after the audio power amplification chip 402 amplifies the second analog signal, the second analog signal after the amplified audio signal is played through the speaker 403; or (b)
The sound effect processing chip 401 sends the fourth digital signal after the sound effect processing to the audio power amplification chip 402, and after the audio power amplification chip 402 amplifies the fourth digital signal, the fourth digital signal after the audio signal is amplified is converted into a second analog signal, and the second analog signal is played through the loudspeaker 403.
In an embodiment, when receiving the K song command, the first main control chip 201 receives the second digital signal sent by the second main control chip 301, including:
when receiving the K song command, the first main control chip 201 receives a second digital signal sent by the second main control chip 301 through the USB sound card 202; or (b)
When receiving a karaoke instruction, the first main control chip receives the second digital signal sent by the first DAC converter 205; wherein the second digital signal is transmitted to the first host chip via the following process: when receiving the karaoke command, the second main control chip controls the first controlled end 3022 of the path selection switch 302 through the second GPIO interface to connect with the first main control chip, and sends the third analog signal corresponding to the designated song accompaniment contained in the karaoke command to the first DAC converter 205 through the first controlled end 3022 and the I2S interface of the path selection switch 302 sequentially by the second control end 3021, and after the first DAC converter 205 converts the third analog signal into the second digital signal, the first main control chip 201 receives the second digital signal after the conversion by the first DAC converter 205.
In an embodiment, when a control instruction is received, the first main control chip performs sound effect processing on the first digital signal or/and the second digital signal according to the control instruction; the control instruction is that the second main control chip sends the control instruction to the first main control chip through a USB sound card 202 or a UART interface.
According to the K song projection integrated machine, reverberation and sound effects are processed through the K modules, so that the processing efficiency is improved, the load of the projection module 30 is reduced, and the delay of sound playing is reduced; the K song projection integrated machine provided by the invention can carry out family entertainment K songs without paying K song cost additionally, has low action cost and time cost, can avoid noisy closed environments, greatly improves user experience, realizes family entertainment K songs, and is suitable for being applied to scenes such as host lectures, and after reverberation processing of accompaniment of human voice and background is realized by arranging the K song module 20 in the K song projection integrated machine, the K song is finally played through the sound output module 40, so that timeliness of sound playing can be reduced. Meanwhile, the invention also supports sound effect modes (acoustic, conference, KTV, concert, valley and the like) and sound changing modes (acoustic, boy, girl, doll sound, beast sound and the like) under different scenes, and the sound effect and sound changing can be controlled only by giving a control instruction to the K song module 20 through the projection module 30, so that customers can enjoy extremely large-screen K song experience without going out.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (3)
1. The Karaoke method of the Karaoke projection all-in-one machine is characterized by comprising the following steps of:
when a K song instruction is received, the first main control chip receives a first digital signal sent by the first ADC converter and a second digital signal sent by the second main control chip; the first digital signal is a digital signal which is formed by the steps that after the wireless transmitting chip acquires the voice data acquired by the microphone, the voice data is transmitted to the first ADC through the wireless receiving chip, and the voice data is converted through the first ADC; the second digital signal is a digital signal corresponding to the appointed song accompaniment contained in the K song instruction obtained by the second main control chip;
the first main control chip generates a third digital signal after carrying out reverberation processing on the first digital signal and the second digital signal;
the first main control chip converts the third digital signal into a first analog signal through a first DAC converter, and then sends the first analog signal to a sound output module for playing;
when receiving the Ksong instruction, the first main control chip receives a second digital signal sent by the second main control chip, and the method comprises the following steps:
when a Karaoke instruction is received, the first main control chip receives a second digital signal sent by the second main control chip through the USB sound card; or (b)
When a Karaoke instruction is received, the first main control chip receives the second digital signal sent by the first DAC converter; wherein the second digital signal is transmitted to the first host chip via the following process: when a Karaoke command is received, the second main control chip controls a first controlled end of a path selection switch through a second GPIO interface to be connected with the first main control chip, and sends a third analog signal corresponding to appointed song accompaniment contained in the Karaoke command to a first DAC (digital-to-analog converter) through the first controlled end of the path selection switch and an I2S interface in sequence through the second control end, and after the first DAC converts the third analog signal into a second digital signal, the first main control chip receives the second digital signal converted by the first DAC.
2. The method of K song projection all-in-one machine according to claim 1, wherein the sending the first analog signal to the sound output module for playing includes:
the first main control chip sends a first analog signal to the sound effect processing chip;
the sound effect processing chip converts the first analog signal into a fourth digital signal and performs sound effect processing on the fourth digital signal;
the audio processing chip converts the fourth digital signal after audio processing into a second analog signal, then sends the second analog signal to an audio power amplification chip, and the audio power amplification chip amplifies the second analog signal and plays the second analog signal after the audio signal is amplified through a loudspeaker; or (b)
The audio processing chip sends the fourth digital signal after audio processing to the audio power amplification chip, and the audio power amplification chip amplifies the fourth digital signal and then converts the fourth digital signal after audio signal amplification into a second analog signal and plays the second analog signal through a loudspeaker.
3. The method for the K-song projection integrated machine according to claim 1, wherein when a control instruction is received, the first main control chip performs sound effect processing on the first digital signal or/and the second digital signal according to the control instruction; the control instruction is that the second main control chip sends the control instruction to the first main control chip through a USB sound card or a UART interface.
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| CN110049298B (en) * | 2019-04-10 | 2020-09-04 | 深圳市橙子数字科技有限公司 | Control method and device of Karaoke projector |
| CN112383789A (en) * | 2020-11-10 | 2021-02-19 | 刘延黄 | Live broadcast sound card with projection function |
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