CN209328503U - Karaoke OK system - Google Patents
Karaoke OK system Download PDFInfo
- Publication number
- CN209328503U CN209328503U CN201821879599.0U CN201821879599U CN209328503U CN 209328503 U CN209328503 U CN 209328503U CN 201821879599 U CN201821879599 U CN 201821879599U CN 209328503 U CN209328503 U CN 209328503U
- Authority
- CN
- China
- Prior art keywords
- audio
- video
- module
- karaoke
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Reverberation, Karaoke And Other Acoustics (AREA)
Abstract
The utility model provides a kind of karaoke OK system, the system comprises host, Karaoke audio-frequency module, for switching over the audio effect processing module of processing, karaoke video module and video frequency switching module for switching over processing to the karaoke video in the karaoke video module to the Karaoke audio in the Karaoke audio-frequency module；The audio effect processing module is connect with the Karaoke audio-frequency module；The video frequency switching module is connect with the karaoke video module；The host is connect with the audio effect processing module and the video frequency switching module respectively, for switching over processing to the karaoke video and the Karaoke audio.The system, which is realized, switches the unified of audio and video, without individually switching over processing to audio or video, simplifies complicated audio-video process flow.
Description
Technical field
The utility model relates to technical fields of playing Karaoka, specifically, the utility model relates to a kind of karaoke OK systems.
Background technique
Currently, Karaoke development at whole-sale price is extremely swift and violent.Nowadays in city prosperity location, lively KTV at whole-sale price business
Place is seen everywhere.At the same time, by multiple karaoke chambers give an extra performance skill hall be amusement in the form of place of business also start
It is existing.
Traditional karaoke OK system is usually by song-order machine, wire/wireless microphone, karaoke machine (analog/digital-number
Karaoke machine also known as karaoke effect device), display equipment (television set/projector), the composition such as sound system.Traditional OK a karaoke club
OK system, transmission path are divided into two signal transmission paths of audio and video.Each equipment room only has the company of signal link in system
Relationship is connect, every suit equipment can only work independently, and lack the concentrated controling management to each equipment.Therefore, system is carrying out sound
When frequency switching and video switching, individually audio frequency apparatus or video equipment can only be managed, to carry out individual Audio conversion,
Or individually video switching, it cannot achieve unified audio-video hand-off process.
Utility model content
The utility model proposes a kind of karaoke OK systems, are switched with realizing to the unified of audio and video, without individually right
Audio or video switches over processing, simplifies complicated audio-video process flow.
The utility model provides following scheme:
A kind of karaoke OK system, which is characterized in that including host, Karaoke audio-frequency module, for the Karaoke sound
Karaoke audio in frequency module switches over the audio effect processing module of processing, karaoke video module and for the card
The karaoke video in OK video module is drawn to switch over the video frequency switching module of processing；The audio effect processing module and the card
Draw the connection of OK audio-frequency module；The video frequency switching module is connect with the karaoke video module；The host respectively with it is described
Audio effect processing module and video frequency switching module connection, for being cut to the karaoke video and the Karaoke audio
Change processing.
In one embodiment, the Karaoke audio-frequency module includes network audio unit and local audio unit, the card
Drawing OK video module includes network video unit and local video unit；The audio effect processing module respectively with the network audio
Unit is connected with the local audio unit, for connecting at switching to the network audio unit with the local audio unit
Reason；The video frequency switching module is connect with the network video unit and the local video unit respectively, for the net
Network video unit and the local video unit switch over processing；The host respectively with the audio effect processing module and described
Video frequency switching module connection, for carrying out local audio-video and net by the audio effect processing module and the video frequency switching module
Network audio-video switches over.
It in one embodiment, further include video display apparatus；Network video unit includes live streaming camera；The live streaming is taken the photograph
As head is for enrolling live video, and the video display apparatus is sent by the live video；The local video unit
It is arranged in the host, the host is connect with the video display apparatus, for by the sheet in the local video unit
Ground video is sent to the video display apparatus.
In one embodiment, the video frequency switching module includes cutting inside HDMI switcher or the video display apparatus
Change switch.
In one embodiment, the HDMI switcher includes first input end and the second input terminal；The first input end
It is connect with the HDMI output end of the host；The HDMI signal output end of second input terminal and the live streaming camera connects
It connects.
It in one embodiment, further include wireless microphone and cable microphone；Audio effect processing module connection respectively with it is described
Wireless microphone and cable microphone connection, the audio effect processing module is for matching cable microphone and wireless microphone.
In one embodiment, the audio effect processing module is connect by RS232 communication interface with the wireless microphone；It is described
Host is connect by USB-HID chip with the audio effect processing module, for the RS232 by the audio effect processing module
Communication interface reads the frequency information of the wireless microphone, to be carried out according to the frequency information to cable microphone and wireless microphone
Pairing.
It in one embodiment, further include sound effect control plate；The sound effect control plate is connect with the audio effect processing module, is used
In the audio for controlling the Karaoke audio-frequency module sound intermediate frequency by the audio effect processing module.
In one embodiment, the sound effect control plate be provided with volume of music adjusting knob, microphone volume adjustment knob and
Effect volume adjustment knob；The volume of music adjusting knob is used for through the sound effect processor module to the Karaoke sound
Audio volume in frequency module is controlled, and the microphone volume adjustment knob is used for through the sound effect processor module to institute
The volume for stating wireless microphone and the cable microphone is controlled, and the effect volume adjustment knob is used for by the audio
Reason device module controls the audio of the Karaoke audio-frequency module sound intermediate frequency.
It in one embodiment, further include transmitting module, the transmitting module includes that the first transmitting unit and the second transmitting are single
Member；The audio effect processing module is provided with the first wireless signal output port and second wireless singal output port；The audio
Processing module is connect by the first wireless signal output port with first transmitting unit, to emit by described first
The main sound channel audio signal in audio is sent main sound box by unit；The audio effect processing module passes through the second wireless singal
Output port is connect with second transmitting unit, to be believed the supplemental channel audio in audio by second transmitting unit
Number it is sent to line Earphone Amplifier.
Karaoke OK system provided by the above embodiment is provided with audio effect processing mould for Karaoke audio-frequency module in system
Block, the audio effect processing module can be used for switching over processing to the Karaoke audio in Karaoke audio-frequency module.Meanwhile for card
OK video module is drawn to be provided with video frequency switching module, which is used to regard the Karaoke in karaoke video module
Frequency switches over processing.In addition, the host in karaoke OK system is connect with audio effect processing module and video frequency switching module respectively, lead to
It crosses that audio effect processing module or video frequency switching module are issued to instruct accordingly and karaoke video or Karaoke audio is switched over
Processing.Therefore, which switches over the sound of processing by increasing to the Karaoke audio in Karaoke audio-frequency module
Processing module is imitated, and switches over the video frequency switching module of processing to the karaoke video in karaoke video module, and lead to
It crosses host to be uniformly controlled the two, the unified of audio and video be switched with realizing, without individually to audio or video
Processing is switched over, complicated audio-video process flow is simplified.
The additional aspect of the utility model and advantage will be set forth in part in the description, these will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The utility model is above-mentioned and/or additional aspect and advantage from the following description of the accompanying drawings of embodiments will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the structural block diagram in an a kind of embodiment of karaoke OK system provided by the utility model；
Fig. 2 is the structural block diagram in a kind of another embodiment of karaoke OK system provided by the utility model；
Fig. 3 is a kind of structural block diagram of karaoke OK system middle pitch video frequency switching module provided by the utility model.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and cannot be construed to the utility model
Limitation.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form, " first " used herein, " second " are only used for distinguishing same technology special
Sign, is not limited the sequence of the technical characteristic and quantity etc..It is to be further understood that the explanation of the utility model
Wording " comprising " used in book refers to that there are the feature, integer, step, operation, element and/or component, but does not arrange
Except presence or add other one or more features, integer, step, operation, element, component and/or their group.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in the utility model fields.Also
It should be understood that those terms such as defined in the general dictionary, it should be understood that have and the context of the prior art
In the consistent meaning of meaning otherwise will not use idealization or too formal and unless by specific definitions as here
Meaning is explained.
The use of the new type provides a kind of karaoke OK system.In one embodiment, as shown in Figure 1, the karaoke OK system includes
Host 100, audio effect processing module 200, Karaoke audio-frequency module 300, video frequency switching module 400 and karaoke video module
500.Audio effect processing module 200 is connect with Karaoke audio-frequency module 300, for the Karaoke audio in Karaoke audio-frequency module
Switch over processing.Video frequency switching module 400 is connect with karaoke video module 500, for the card in karaoke video module
OK video is drawn to switch over processing.Host 100 is connect with audio effect processing module 200 and video frequency switching module 400 respectively.Host
100 when receiving corresponding switching command, right according to instruction control audio effect processing module 200 and/or video frequency switching module 400
Karaoke video or Karaoke audio switch over processing.Specifically, host 100 can be PC host, Android host, Linux
Host etc..
Above-mentioned karaoke OK system is provided with audio effect processing module, the audio effect processing for Karaoke audio-frequency module in system
Module can be used for switching over processing to the Karaoke audio in Karaoke audio-frequency module.Meanwhile for karaoke video module
Provided with video frequency switching module, the video frequency switching module is for switching over place to the karaoke video in karaoke video module
Reason.In addition, the host in karaoke OK system is connect with audio effect processing module and video frequency switching module respectively, by audio effect processing
Module or video frequency switching module issue corresponding instruction and switch over processing to karaoke video or Karaoke audio.Therefore, should
Karaoke OK system switches over the audio effect processing module of processing by increasing to the Karaoke audio in Karaoke audio-frequency module, with
And the video frequency switching module of processing is switched over to the karaoke video in karaoke video module, and by host to the two
It is uniformly controlled, the unified of audio and video is switched with realizing, without individually switching over processing to audio or video, letter
Change complicated audio-video process flow.
In one embodiment, as shown in Fig. 2, Karaoke audio-frequency module 300 includes network audio unit 310 and local audio
Unit 320.Karaoke video module 500 includes network video unit 510 and local video unit 520.Wherein, audio effect processing mould
Block 200 is connect with network audio unit 310 and local audio unit 320 respectively, for network audio unit 310 and this rock noise
Frequency unit 320 connects hand-off process.Video frequency switching module 400 connects with network video unit 510 and local video unit 520 respectively
It connects, for switching over processing to network video unit 510 and local video unit 520.Host 100 respectively with audio effect processing mould
Block 200 and video frequency switching module 400 connect, for carrying out this rock noise by audio effect processing module 200 and video frequency switching module 400
Video and network audio-video switch over.In a particular embodiment, host 100 can be right by audio effect processing module 200
Local audio and network audio switch over processing, can also be by video frequency switching module 400 to local video and network video
Switch over processing.Alternatively, host 100 by audio effect processing module 200 and the local audio-videos of 400 pairs of video frequency switching module with
And network audio-video switches over processing.Specifically, host 100 is switched to local audio by audio effect processing module 200, simultaneously
Local video is switched to by video frequency switching module 400.Similarly, host 100 is switched to network audio by audio effect processing module 200
Frequently, while by video frequency switching module 400 it is switched to network video.Therefore, it can be achieved that local audio is synchronous with local video
Progress or network audio progress synchronous with network video.
In one embodiment, which further includes video display apparatus.Network video unit 510 includes that live streaming is taken the photograph
As head.Live streaming camera sends video display apparatus for live video for enrolling live video.Local video unit
520 are arranged in host 100, and host 10 is connect with video display apparatus, for by the local video in local video unit 520
It is sent to video display apparatus.Specifically, video display apparatus can be display screen or TV.
Further, video frequency switching module includes the switching switch inside HDMI switcher or video display apparatus.One
In embodiment, HDMI switcher includes first input end and the second input terminal.The HDMI of first input end and host 100 is exported
End connection, the second input terminal is connect with the HDMI signal output end of live streaming camera, for the local video inside host 100
And the network video of live streaming camera switches over.
In order to which karaoke OK system described in above-described embodiment is described in further detail, specific implementation scene provided below:
As shown in figure 3, the virtual key on the touch screen of host is realized as operation interface entrance by triggering this key
Local audio and video playing and it is switched to the live video from local high-definition camera and the network audio from local network,
To realize audio, audio video synchronization switching.Specifically, the control instruction that host signal is got from touch screen, passes through USB-HUB
Chip sends MCU processor for this control instruction using HID bus.MCU processor is referred to by simulated television infrared remote control
Enable switching television video input.Meanwhile MCU processor directly controls audio switch and selects corresponding video letter by control line
Number audio.For example, audio collocation local audio when the HDMI video input of host, audio is taken when live streaming video recorder inputs
With the network audio from local network.By the host of the karaoke OK system, audio effect processing module, Karaoke audio-frequency module,
Video frequency switching module and karaoke video mould, can the convenient, fast switching for realizing high resolution audio and video signal.Herein, HDMI is
High-definition video signal, local audio and network audio are all made of Digital Audio Transmission.
In one embodiment, karaoke OK system further includes wireless microphone and cable microphone (not shown).Audio effect processing module
200 connections are connect with wireless microphone and cable microphone respectively.Audio effect processing module 200 be used for cable microphone and wireless microphone into
Row pairing.Specifically, audio effect processing module 200 is connect by RS232 communication interface with wireless microphone.Host 100 passes through USB-
HID chip is connect with audio effect processing module 200, for reading nothing by the RS232 communication interface of audio effect processing module 200
The frequency information of line microphone, to be matched according to frequency information to cable microphone and wireless microphone.
In one embodiment, karaoke OK system further includes sound effect control plate (not shown).Sound effect control plate and audio effect processing
Module 200 connects, for the audio by control Karaoke 300 sound intermediate frequency of audio-frequency module of audio effect processing module 200.It is described herein
Audio, it may include the audio etc. in the volume adjustment of wireless microphone and cable microphone, local and network audio signal.?
In one embodiment, sound effect control plate is provided with volume of music adjusting knob, microphone volume adjustment knob and effect volume adjustment
Knob.Volume of music adjusting knob is used for through the audio volume in 200 pairs of sound effect processor module Karaoke audio-frequency modules 300
It is controlled, microphone volume adjustment knob is used for the volume by sound effect processor module 200 to wireless microphone and cable microphone
It is controlled, effect volume adjustment knob is used for through 200 pairs of sound effect processor module 300 sound intermediate frequencies of audio-frequency module of playing Karaoka
Audio is controlled.
In one embodiment, karaoke OK system further includes transmitting module (not shown).Transmitting module includes that the first transmitting is single
Member and the second transmitting unit.Audio effect processing module 200 is provided with the first wireless signal output port and second wireless singal output
Port.Audio effect processing module 200 is connect by the first wireless signal output port with the first transmitting unit, to pass through the first transmitting
The main sound channel audio signal in audio is sent main sound box by unit.Audio effect processing module 200 is exported by second wireless singal
Port is connect with the second transmitting unit, to send line ear for the supplemental channel audio signal in audio by the second transmitting unit
Machine amplifier.
Below for above-mentioned karaoke OK system, a specific implementation scene is provided.It is specific as follows:
Multifunction card karaoke system, including host, sound effect processor, HDMI switcher, network audio module, wireless microphone
Module, two groups of 5.8G independent transmission/receiving modules, power supply module, big screen display devices etc..Host is realized as media center
Song requesting song, audio play, recording, sing the functions such as depositary management reason, peripheral hardware control.Host passes through USB-HID mode and audio effect processing
Device (audio effect processing center and System Control Center) communication, can carry out all audio frequency parameters of sound effect processor by USB-HID
Configuration and adjusting.Host is also realized by USB-HID controls the peripheral hardwares such as HDMI switching switch, network audio module, from
And it realizes external HDMI video signal and the external audio from network audio module and is switched over local audio-video signal.
Sound effect processor is the audio effect processing center and control centre of the utility model, is connect by USB with host.Specifically
Ground is connect, by the Digital Audio Transmission of PC to sound effect processor by USB-HUB chip with USB AUDIO chip.Pass through
USB-HUB chip is connect with the MCU of sound effect processor, and logical by the data that USB-HID establishes host and sound effect processor
News.
Sound effect processor has two-way USB3.0 interface, is used for external 5.8G transmitting module.This module will by connecting line
5.8G transmitting module is installed on the place not stopped by any metallic shield and other objects, preferably sends out convenient for 5.8G signal
It is shot out.The input signal of 5.8G module is the signal of I2S type, since connecting line may be long, I2S type signal ratio
It is easier to be interfered, in order to preferably guarantee signal quality, I2S type signal is first converted to SPDIF class by sound effect processor
Type signal is reconverted into I2S type signal in the receiving terminal of 5.8G transmitting module and enters 5.8G transmitting module.Wherein, this two-way
Main sound channel audio signal is transferred to main sound box by 5.8G transmitting all the way by 5.8G transmitting module.Due to saving connecting line,
Installation is more convenient, more both artistic and practical.Another way emits supplemental channel audio signal by 5.8G, is transferred to wireless headset and puts
Big device, drives high-fidelity headphone, and user can select practical speaker to listen to or listen to by earphone according to the hobby of oneself.
Sound effect processor also has the input of two-way microphone signal.Sound effect processor is defeated by XLR terminal and wireless microphone
It is connected out, the communication connection of sound effect processor and wireless microphone is realized using RS232 communication modes.Host can pass through USB-
HID obtains the frequency information of wireless microphone handheld terminal using the RS232 communication interface of MCU chip, can also pass through host reality
The matching operation of existing hand microphone and wireless microphone host.Therefore, complicated operation can be become simply, it is easy-to-use.
Sound effect processor is also communicated by RS232 to be connected with sound effect control plate, provides volume of music on sound effect control plate
Adjusting knob, microphone volume adjustment knob, effect volume adjustment knob, the music being respectively used in control sound effect processor module
Volume, microphone volume and effect volume.
Large-screen display equipment is as video frequency terminal apparatus.The output end of HDMI switcher, HDMI are connected to by HDMI
The input of switch is that the HDMI output of host and outside HDMI signal import and export, HDMI switcher pass through USB RS 232 module
It is connected to the USB terminal of host, host carries out audio-video switching according to the instruction received.Since HDMI is opened using hardware exchange
It closes, audio is transmitted using network audio, so that sound, video delay time are respectively less than 10ms.
The above is only some embodiments of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
It should be understood that each functional unit in various embodiments of the utility model can be integrated in a processing module
In, it can also be physically existed alone, can also be integrated in two or more units in a module with each unit.Above-mentioned collection
At module both can take the form of hardware realization, can also be realized in the form of software function module.
The above is only some embodiments of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of karaoke OK system, which is characterized in that including host, Karaoke audio-frequency module, for the Karaoke audio
Karaoke audio in module switches over the audio effect processing module of processing, karaoke video module and for the OK a karaoke club
Karaoke video in OK video module switches over the video frequency switching module of processing；
The audio effect processing module is connect with the Karaoke audio-frequency module；
The video frequency switching module is connect with the karaoke video module；
The host is connect with the audio effect processing module and the video frequency switching module respectively, for the karaoke video
Processing is switched over the Karaoke audio.
2. karaoke OK system according to claim 1, which is characterized in that the Karaoke audio-frequency module includes network audio
Unit and local audio unit, the karaoke video module include network video unit and local video unit；The audio
Processing module is connect with the network audio unit and the local audio unit respectively, for the network audio unit and
The local audio unit connects hand-off process；The video frequency switching module respectively with the network video unit and the local
Video unit connection, for switching over processing to the network video unit and the local video unit；The host point
It is not connect with the audio effect processing module and the video frequency switching module, for passing through the audio effect processing module and the video
Switching module carries out local audio-video and network audio-video switches over.
3. karaoke OK system according to claim 2, which is characterized in that further include video display apparatus；Network video list
Member includes live streaming camera；The live streaming camera sends the view for the live video for enrolling live video
Frequency display equipment；The local video unit is arranged in the host, and the host is connect with the video display apparatus, uses
In sending the video display apparatus for the local video in the local video unit.
4. karaoke OK system according to claim 3, which is characterized in that the video frequency switching module includes HDMI switcher
Or the switching switch inside the video display apparatus.
5. karaoke OK system according to claim 4, which is characterized in that the HDMI switcher include first input end and
Second input terminal；The first input end is connect with the HDMI output end of the host；Second input terminal and the live streaming
The HDMI signal output end of camera connects.
6. karaoke OK system according to claim 1, which is characterized in that further include wireless microphone and cable microphone；It is described
The connection of audio effect processing module connect with the wireless microphone and the cable microphone respectively, and the audio effect processing module is for having
Line microphone is matched with wireless microphone.
7. karaoke OK system according to claim 6, which is characterized in that the audio effect processing module is communicated by RS232
Interface is connect with the wireless microphone；The host is connect by USB-HID chip with the audio effect processing module, for passing through
The RS232 communication interface of the audio effect processing module reads the frequency information of the wireless microphone, according to the frequency
Information matches cable microphone and wireless microphone.
8. karaoke OK system according to claim 1, which is characterized in that further include sound effect control plate；The sound effect control
Plate is connect with the audio effect processing module, for controlling the Karaoke audio-frequency module sound intermediate frequency by the audio effect processing module
Audio.
9. karaoke OK system according to claim 8, which is characterized in that the sound effect control plate is provided with volume of music tune
Save knob, microphone volume adjustment knob and effect volume adjustment knob；The volume of music adjusting knob is used for by audio
Reason device module controls the audio volume in the Karaoke audio-frequency module, and the microphone volume adjustment knob is for passing through
The sound effect processor module controls the volume of wireless microphone and cable microphone, and the effect volume adjustment knob is used for
It is controlled by audio of the sound effect processor module to the Karaoke audio-frequency module sound intermediate frequency.
10. karaoke OK system according to claim 1, which is characterized in that it further include transmitting module, the transmitting module packet
Include the first transmitting unit and the second transmitting unit；The audio effect processing module is provided with the first wireless signal output port and second
Wireless signal output port；The audio effect processing module is single by the first wireless signal output port and first transmitting
Member connection, to send main sound box for the main sound channel audio signal in audio by first transmitting unit；At the audio
Reason module is connect by the second wireless singal output port with second transmitting unit, with single by second transmitting
The supplemental channel audio signal in audio is sent line Earphone Amplifier by member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821879599.0U CN209328503U (en) | 2018-11-14 | 2018-11-14 | Karaoke OK system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821879599.0U CN209328503U (en) | 2018-11-14 | 2018-11-14 | Karaoke OK system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209328503U true CN209328503U (en) | 2019-08-30 |
Family
ID=67710372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821879599.0U Active CN209328503U (en) | 2018-11-14 | 2018-11-14 | Karaoke OK system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209328503U (en) |
-
2018
- 2018-11-14 CN CN201821879599.0U patent/CN209328503U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4571794B2 (en) | Method and system for disassembling audio / visual components | |
| JP2002369283A (en) | Earphone | |
| CN104426832A (en) | Multi-terminal multichannel independent playing method and device | |
| CN106792333A (en) | The sound system of television set | |
| CN102147566A (en) | Multimedia projector with embedded operation system | |
| CN1898957B (en) | Using multiple communication links in conjunction with a media adapter | |
| CN110809129A (en) | Centralized control type conference room sound system | |
| CN201805538U (en) | Circuit for improving play sound articulation according to ambient sound, and device thereof | |
| CN109637512A (en) | A kind of tuning system and tuning method | |
| CN111200712A (en) | Audio processing device, karaoke circuit board and television all-in-one machine | |
| CN209328503U (en) | Karaoke OK system | |
| CN202856964U (en) | Audio playing system and multi-channel earphone with wireless voice integrated | |
| CN209861096U (en) | Multi-functional plug-in card bluetooth karaoke stereo set PCBA board | |
| CN204013994U (en) | Earphone | |
| CN103079142B (en) | A kind of wireless bass big gun bass time delay adjustable system and method | |
| CN109346048B (en) | Karaoke sound effect processing device and sound effect processing system | |
| CN202261607U (en) | Multi-input single-output high-definition multimedia interface (HDMI) adaptation device and system | |
| CN203870973U (en) | Integrated intelligent high efficiency digital multimedia playing system | |
| CN202008574U (en) | Multi-media projector with embedded operating system | |
| CN114501401A (en) | Audio transmission method and device, electronic equipment and readable storage medium | |
| CN210839816U (en) | Sound effect processing device, karaoke circuit board and television all-in-one machine | |
| CN202103776U (en) | Multi-input and single-output high-definition multimedia interface (HDMI) adaptive device and system | |
| CN206775627U (en) | A kind of household television acoustics | |
| CN214544789U (en) | Power amplifier all-in-one machine with network audio-video playing function | |
| CN109547709A (en) | A kind of multimedia integration display system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |