CN101404156B - Wireless music accompaniment apparatus having control function of audio signal output level - Google Patents
Wireless music accompaniment apparatus having control function of audio signal output level Download PDFInfo
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- CN101404156B CN101404156B CN2008101088866A CN200810108886A CN101404156B CN 101404156 B CN101404156 B CN 101404156B CN 2008101088866 A CN2008101088866 A CN 2008101088866A CN 200810108886 A CN200810108886 A CN 200810108886A CN 101404156 B CN101404156 B CN 101404156B
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/36—Accompaniment arrangements
- G10H1/361—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems
- G10H1/366—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems with means for modifying or correcting the external signal, e.g. pitch correction, reverberation, changing a singer's voice
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/46—Volume control
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/48—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
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- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Circuit For Audible Band Transducer (AREA)
- Reverberation, Karaoke And Other Acoustics (AREA)
- Transmitters (AREA)
Abstract
The present invention provides a music accompaniment device, which includes at least two radio microphones, for converting the external input audio signals into electrical signals and using a built-in RF transmitter module to send out the electrical signals through a wireless connection; and a main controller, which has an RF receiver module. The RF receiver module can receive at least two wireless microphone signals simultaneously through at least two receiver channels. The main controller receives the audio signals from the at least two radio microphones, mixes the audio signal with the embedded accompaniment signal and the subtitling signal, and sending out the output signal all together with the output level varying with the kinds of the peripheral equipment as the output destination. The music accompaniment device reduces production costs, enhances the Tx/Rx efficiency, as well as distortionlessly reproduces the audio signal with optimum acoustic quality.
Description
Technical field
The present invention relates to music accompaniment apparatus, more particularly, relate to the wireless music accompaniment apparatus with control function of audio signal output level, it differently controls the outside output level of sound signal according to the kind that is connected to the equipment of music accompaniment apparatus, and passes through a receiver module Synchronous Receiving from the sound signal of a plurality of wireless microphones.
Background technology
Music accompaniment apparatus is for reappearing the accompaniment music of storing at storer and the equipment that allows the user to listen attentively to accompaniment music and sing together.For the performance of better stage is provided, the image that music accompaniment apparatus changes with the progress that shows with the music of playing or the video system of captions are used.Marking apparatus also is used for estimating user's performance level and the mark that demonstration is chosen based on volume, rhythm etc., allows the user to understand objectively his/her performance level.
Have two kinds of described music accompaniment apparatus: repertoire all embeds the microphone formula music accompaniment apparatus of microphone, and the microphone separate type music accompaniment apparatus that separates with main body (master controller) of microphone.For microphone formula isolating construction, microphone is connected to main body by wired or wireless connection.Compare with wired connection, wireless connections provide the upper less restriction of distance and have guaranteed portability.In the situation of wireless connections, the two all has emitter/receiver module wireless microphone and main body.
Usually, main body need to have and the as many emitter/receiver module of wireless microphone.For example, use two wireless microphones, then main body must have two emitter/receiver modules, because emitter/receiver module can pass through two wireless microphone Synchronous Receiving sound signals.Therefore, when using two or more wireless microphone, main body need to the as many emitter/receiver module of wireless microphone.This improves production cost.In addition, use a microphone only to allow an emitter/receiver module to be used for main body, this is not so that this device has advantage aspect efficient.
For Voice ﹠ Video output, music accompaniment apparatus has display device or the loudspeaker of oneself, but usually by connecting the external unit that uses such as televisor or audio frequency apparatus.Especially, family expenses or portable music accompaniment apparatus are considered to have and being connected of this external unit.The different maximum input levels that have the sound signal that to accept device inside such as the external unit of televisor, audio frequency apparatus etc.When the output level from the sound signal of music accompaniment apparatus output is lower than the maximum input level that external unit can accept, be not in-problem.
Yet, when the output level from the sound signal of music accompaniment apparatus is higher than the maximum input level of the sound signal that external unit can accept, can produce some problems.In this case, external unit becomes and can not receive sound signal from music accompaniment apparatus, perhaps, if possible, substantially can not reappear the sound signal of exporting under normal condition from music accompaniment apparatus.This has caused audio quality inferior, under the worst condition, makes external unit can not reappear sound signal.
Summary of the invention
Therefore the purpose of this invention is to provide a kind of wireless music accompaniment apparatus with control function of audio signal output level, it can solve the problems referred to above of prior art.
Another object of the present invention provides a kind of wireless music accompaniment apparatus with control function of audio signal output level, and it can reduce production cost.
Another purpose of the present invention provides a kind of wireless music accompaniment apparatus with control function of audio signal output level, and it increases transmitting/receiving efficient.
A further object of the present invention provides a kind of wireless music accompaniment apparatus with control function of audio signal output level, and its kind according to the external unit that connects is controlled output level.
Another purpose of the present invention provides a kind of wireless music accompaniment apparatus with control function of audio signal output level, and it reappears sound signal to realize best tonequality.
In order to realize above-mentioned purpose of the present invention, the music accompaniment apparatus that provides comprises: at least two wireless microphones, and it is used for outside input audio signal is converted to electric signal, and uses built-in RF transmitter module to send electric signal by wireless connections; And master controller, it has a RF receiver module, described RF receiver module can receive signal from least two wireless microphones simultaneously by at least two receiver channels, master controller receives the sound signal from least two wireless microphones, sound signal is mixed with accompaniment signal and the caption signal of embedding, and output signal is sent with the output level that the kind according to the external unit that is used as export target changes.
In at least two wireless microphones each receives the control signal that is used for the control master controller and the load button in the outside by being arranged on wireless microphone is sent to the data-signal of master controller, and additionally control signal and data-signal is sent to master controller by the RF transmitter module.Master controller is by RF receiver module reception control signal and data-signal.
Master controller comprises: signal receiving part is used for receiving sound signal, control signal and data-signal from least two microphone wireless transmissions, and divides to the received signal (divide) and processing; Host CPU, the multiple interfaces that it has the common treatment input/output control unit of at least two signals that apply for the I/O outside and comprises memory interface and optical interface, host CPU control comprise all operations were of audio frequency, the emission that control and data signal or output control; The signal efferent, it is controlled by host CPU, described signal efferent is processed data and sound signal storage inside or that receive by signal receiving part, and the signal that will process is sent to external unit with the output level that the kind according to external unit changes; And storage part, it is configured to for data backup, and storage operating system and comprise music related data for the various software of the operation of master controller, audio file and movie file.
The signal efferent comprises audio output part, and it is used for output by at least two microphones sound signal that receives and the accompaniment signal that is stored in storage part.
Audio output part comprises: the equipment selection portion, it is used for selecting to be connected to by wired or wireless connection the kind of the external unit of music accompaniment apparatus, in order to the sound signal that receives by at least two microphones or the sound signal that comprises the accompaniment signal that is stored in the storage part are carried out the outside reproduction; And the output level control part, its selection signal that is used for the response apparatus selection portion is controlled the outside output level of the audio output signal that outputs to external unit.
The output level control part comprises at least one level converter, and it is used for the outside output level of control audio output signal.The outside output level of audio output signal is to control by the operation mains voltage level of control level transducer.
The output level control part controls outside output level so that the outside output level when being televisor by the selected external unit of equipment selection portion is lower than the outside output level when selected external unit is audio frequency apparatus (AMP).
The output level control part comes storing predetermined average maximum level by device category, and outside output level is controlled to corresponding to the average maximum level by the selected equipment of equipment selection portion.
The output level control part is stored predetermined optimum level for best tonequality by device category, and outside output level is controlled to corresponding to the optimal level by the selected equipment of equipment selection portion.
Master controller further comprises the memory card input part, and it has the interface for increasing memory external card or outside expanding packet.
Master controller further comprises data communication section, and it is used for comprising the data communication that music data is downloaded with the outside.
Master controller further comprises: the button input part, and it is used for by telepilot or button control host CPU and data input; And display part, it is used for showing the input data and checks the operation related data.
Master controller has the structure that can be connected to wire microphone and wireless microphone.
The control of master controller is realized by the input of the control signal of being undertaken by master controller or at least two wireless microphones.
According to the present invention, an emitter/receiver module is installed to reduce production cost and to increase reception/emission efficiency in master controller.The present invention controls audio output level according to the kind of the external unit that connects, thereby reappears without distortion the sound signal of best tonequality.
Hereinafter the present invention is described more fully now with reference to accompanying drawing, shown in the drawings of the preferred embodiments of the present invention.Yet the present invention can implement and should not be construed as the embodiment that is confined to enumerate herein with multiple different form.On the contrary, provide these embodiment in order to make the disclosure can be thoroughly and comprehensively, and scope of the present invention can be conveyed to those skilled in the art all sidedly.
Description of drawings
By the preferred embodiment that invention will be described in detail with reference to the attached drawing, above-mentioned and other feature and advantage of the present invention will become more clear to those of ordinary skills, in the accompanying drawing:
Fig. 1 is the block scheme of music accompaniment apparatus according to an embodiment of the invention;
Fig. 2 is the block scheme of the master controller of Fig. 1;
Fig. 3 is the block scheme of the audio output part of Fig. 2;
Fig. 4 is the block scheme of the wireless microphone of Fig. 1;
Fig. 5 illustrates master controller and the wireless receiving between the wireless microphone/emission relation among Fig. 1; And
Fig. 6 is the external view of outward appearance that the music accompaniment apparatus of Fig. 1 is shown.
Embodiment
Hereinafter the present invention is described more fully now with reference to accompanying drawing, wherein shows the preferred embodiments of the present invention.Yet the present invention can implement and should not be construed as the embodiment that is confined to enumerate herein with different forms.On the contrary, these embodiment are provided as teaching example of the present invention.Similar Reference numeral represents similar element.
Fig. 1 is the block scheme of wireless music accompaniment apparatus 500 according to an embodiment of the invention.
As shown in Figure 1, wireless music accompaniment apparatus 500 comprises external unit 100, master controller 400 and a plurality of microphone 200a, 200b and 200c according to an embodiment of the invention.
Described at least two microphone 200a, 200b and 200c (hereinafter by Reference numeral 200 expressions), they are wireless microphones, electric signal from the control control signal of master controller 400 and user's sound signal conversion is divided with compound, and signal is sent to master controller 400.Therefore, each microphone has built-in RF transmitter module (240 among Fig. 4).
Control signal Con is used for the user and controls master controller 400 with microphone 200.That is, the user can be by operation or other control operation of microphone 200 control master controllers 400.In fact, each microphone 200 all can be used for control master controller 400.Yet, in another embodiment of the present invention, (for example use a selected microphone 200, microphone 200a) controls master controller 400, and other microphone 200b and 200c carry out the common function of microphone, are converted to electric signal and wireless transmission signal such as the input audio signal with the user.
With reference to Fig. 4 structure and the operation of each microphone 200 are elaborated.
Hereinafter, RF receiver module and RF transmitter module are called " RF emitter/receiver module ".Usually wireless launcher/receiver module is configured to not only be suitable for emission but also be suitable for receiving.The term of herein using " RF emitter/receiver module " means the module that can either launch and can receive, and can be substituted by term " RF transmitter module " when only executing data is launched in being arranged on wireless microphone 200, be substituted by term " RF receiver module " when perhaps in being arranged on master controller 400, being used for data receiver.
Used the various wireless communication system that well known to a person skilled in the art between master controller 400 and the wireless microphone 200.
Fig. 2 is the structural drawing of the master controller of Fig. 1.
As shown in Figure 2, master controller 400 comprises signal receiving part 470, host CPU 450, signal efferent 480 and storage part 420; And additionally, memory card input part 440, data communication section 445, button input part 498 and display part 492.
The RF emitter/receiver module 415 that relates to wireless data transmission/reception can comprise a RF emitter/receiver module for data transmission and reception, or only is used for the independent RF receiver module of data receiver.
As shown in Figure 5, only provide a RF emitter/receiver module 415, it is configured to the signal of simultaneous system reception from a plurality of microphones 200.For example, for n microphone 200, RF emitter/receiver module 415 receives simultaneously from the signal that is arranged on n RF emitter/receiver module in each microphone 200.Therefore, RF emitter/receiver module 415 has a plurality of receiver channels.
Because the development of science and technology, the RF emitter/receiver module with two receiver channels is commercially available, and the RF emitter/receiver module more than two receiver channels appears having in hope in the near future.
The division of signal that signal is processed and division section 410 will receive by RF emitter/receiver module 415 is sound signal Audio, control signal Con and data-signal Data, then the signal of dividing is processed.Sound signal Audio is the input audio signal by the user of wireless microphone 200 transmissions, and control signal Con is the signal that is sent by the user's button that is arranged on the microphone outside.
Control signal Con comprises the signal for the control of the volume of output audio signal or sound effect control (for example, echo), and the signal of control that is used for the operation of master controller 400.Data-signal Data comprises the digital signal of being keyed in to select specific music by the user.Sound signal Audio, control signal Con and data-signal Data are sent to signal receiving part 470 as composite signal or independent signal.
By the signal efferent 480 of host CPU 450 controls, to processing by signal receiving part 470 data and sound signals that receive or that be stored in the built-in storage part 420, then signal is exported to the external unit 100 such as televisor or audio frequency apparatus.
Signal efferent 480 comprises audio output part 425 and video (captions) efferent 430.
Video (captions) efferent 430 is used for showing the vision signal Video from host CPU 450 outputs.Vision signal Video comprises film, captions or text signal.
Then described video encoder carries out outside output to the vision signal behind the coding to the encoding video signal from graphics engine output.Vision signal Video can be that (the composite video blanking is synchronous: CVBS) or the VGA signal for television video frequency signal.
Graphics engine uses for the treatment of the vision signal such as music video data or background image, or such as the various controller of the vision signal Video of captions and film signal.Graphics engine has the controller for the treatment of NTSC/PAL, VGA or CRTC signal, the text box that is used for Subtitle Demonstration, be used for the video DAC that background image shows, and be used for to show the captions that overlap on the background image or the overlay controller of the lyrics, thereby vision signal Video is processed.
Memory card input part 440 has the memory external card interface for the information reception of memory external card, and comprises the outside expanding packet interface for increasing a plurality of expansion slot of outside expanding packet.Described memory external card comprises SD memory card or MMC memory card.Described outside expanding packet is used for replenishing, revise and replacing of music related data.
Fig. 3 is the block scheme of detailed construction of the audio output part 425 of presentation graphs 2.
As shown in Figure 3, audio output part 425 comprises Audio Signal Processing section 130, output level control part 140 and equipment selection portion 150.
Audio Signal Processing section 130 will be treated to by the signal that signal receiving part 470 or host CPU 450 receive and be suitable for output level, or comprise the multiple audio frequency coherent signal that is stored in the accompaniment signal in the storage part 420.Signal in Audio Signal Processing section 130 is processed the step that relates to analog to digital conversion (vice versa), and the accompaniment signal that will be stored in the storage part 420 mixes with the sound signal that receives by signal receiving part 470 and the outside step that sends mixed signal.
130 pairs of outsides of Audio Signal Processing section are applied to the external audio signal of wireless microphone 200 and comprise that the internal audio frequency signal of the accompaniment signal of embedding processes, and sound signal is mixed.Hereinafter, the output signal with Audio Signal Processing section 130 is called " audio output signal ".
150 selections of equipment selection portion are connected to the kind of the external unit 100 of music accompaniment apparatus 500, to reappear from the sound signal of music accompaniment apparatus 500 outputs.Usually, the external unit that is connected to music accompaniment apparatus 500 comprises televisor 110 or audio frequency apparatus 120, and additionally, is used for the different audio reproduction equipment of audio reproduction.External unit 100 has the structure that can be connected to music accompaniment apparatus 500, and comprises for the equipment of reproduction from any kind of the sound signal of music accompaniment apparatus 500 outputs.
When being electrically connected to external unit 100, equipment selection portion 150 automatically detects the kind of the external unit that connects.Therefore, external unit 100 can produce the detection signal of its kind of identification.
When not allowing automatic detection, or when not having automatic detector spare, the user can select button come the artificially to select external unit 100 by connecting or pressing.When televisor 110 was used as external unit 100, for example, the user pressed the TV that is arranged on microphone 200 or the master controller 400 and selects button to produce TV selection signal.As external unit 100, the user connects or presses the audio frequency apparatus that is arranged on microphone 200 or the master controller 400 and selects button to produce audio frequency apparatus selection signal for audio frequency apparatus 120.The switching device that is used for selection that provides or the kind of selecting button and external unit 100 are as many.
The selection signal of response apparatus selection portion 150,140 controls of output level control part are from the outside output level of the audio output signal of Audio Signal Processing section 130 outputs.Output level control part 140 comprises at least one level translator (not shown), and it is used for amplifying the audio output signal of Audio Signal Processing section 130, and the signal after the outside output amplification.
Level translator can be arranged on the amplifier in the sound signal input/output circuitry.In this case, come the output level of control amplifier by the operation mains voltage level of control amplifier.
Certainly, the method for other control output level also is feasible.That is, well known to a person skilled in the art that several different methods and circuit can be as the compositions of output level control part 140.
For example, when external unit 100 was televisor 110, output level control part 140 controlled to 1Vrms with output level.Just can not input audio signal or the certain situation of reproducing signal not if exist the level of the sound signal Audio of particular television to surpass 2Vrms.Therefore, will control to 1Vrms from the output level of the sound signal Audio of output level control part 140, can solve about can not input audio signal during for televisor 110 when external unit 100 or do not reappear the problem of sound signal.In this case, can suitably control gain from the sound signal of output level control part 140 output to increase tonequality.Improve described gain reducing output level, and reduce described gain to increase output level.
For example, when external unit 100 is audio frequency apparatus 120, the output level of output level control part 140 is controlled to 2Vrms.
The level of supposing the sound signal Audio by output level control part 140 input equals or is about 2Vrms.When the external unit 100 that connects during for televisor 110, output level control part 140 remains on 1Vrms with output level.But when external unit 100 was audio frequency apparatus 120, output level control part 140 was only exported input value and is not carried out level control.
For all available external units, output level control part 140 is scheduled to average maximum level value by the equipment that is used for the sound signal input, and predetermined value is stored in independent storer or the storage part 420.In case the kind of equipment selection portion 150 selected external units, output level control part 140 obtains the average maximum level value corresponding with selected equipment, and outside output level is controlled to suitable level value.
In another embodiment, 140 storages of output level control part are used for optimal level value rather than the average maximum level value of best tonequality.Described optimal level value is the input value that is confirmed as realizing best tonequality by equipment according to different experiments or data.Then outside output level can be controlled as the optimal level value corresponding to the equipment of being selected by equipment selection portion 150.
In another example, when external unit 100 was new one rather than predetermined external unit, output level control part 140 can have be used to the independent entering apparatus of inputting new level value, or on the contrary, can allow to select like device to replace.Optionally, when level value changed in sequence, output level control part 140 can be selected optimal level value or maximum level value.Independent entering apparatus comprises the button that is arranged on microphone 200 or the master controller 400.
As mentioned above, the present invention is according to the output level of the kind change sound signal of the external unit that is connected to music accompaniment apparatus, to reappear sound signal and to realize best tonequality.
Fig. 4 is the block scheme of structure of the wireless microphone 200 of presentation graphs 1.
As shown in Figure 4, the wireless microphone 200 that is arranged in the music accompaniment apparatus according to an embodiment of the invention comprises the amplifier 220 that amplifies input audio signal Audio, and the A/D converter 225 that the sound signal of amplifying is converted to digital signal, and additionally, coder-decoder 230, microphone CPU 250, synthetic and the converter section 235 of signal, button input part 295, storage part 270, RF emitter/receiver module 240 and display part 290.
230 pairs of digital audio and video signals from amplifier 220 or A/D converter 225 outputs of coder-decoder are encoded or are controlled.Audio codec 230 is according to SBC (intelligent bit rate control) or the encoding or deciphering sound signal of ADM system.Audio codec 230 can comprise the function of A/D converter 225.
Come I/O to pass through the signal of button input part 295 inputs by the push-button interface among the microphone CPU 250.Display part 290 is set comes the mode of operation of the information of display control signal and/or microphone 200 so that user's identification.Display part 290 shows numeral or the signal by the operating key of button input part 295 inputs simply.
The general operation of microphone CPU 250 control microphones 200, control is used for from the encoding operation of the digital audio and video signals of coder-decoder 230 outputs, and control makes the composite signal of sound signal behind the coding and control signal be fit to the conversion operations of emission.
Sound signal behind the synthetic and 235 pairs of codings of converter section of signal and the composite signal conversion of control signal make it be suitable for emission, or only export independent signal and do not synthesize.Composite signal comprises at least one in sound signal and the control signal.
The 240 wireless outputs of RF emitter/receiver module are synthetic from signal and converter section 235 is exported independent signal or composite signal.In the situation of wireless output, signal is by antenna 285 or by transmissions such as baseband transmission systems.
If not in generalized case, storage part 270 can be set in microphone when needed be used for the data storage.
Replace wireless microphone 200, music accompaniment apparatus 500 can have can be identical with wireless microphone 200 functions wire microphone.
Fig. 6 illustrates the schematic perspective view of the outward appearance of the wireless microphone 200 of presentation graphs 1 and master controller 400.Although the outward appearance of wireless microphone 200 and master controller 400 provides as an example, in design, different improvement or correction can be arranged, to provide convenience and comfortable and make device seem welcome.
As shown in Figure 6, be provided with two microphones 200 and a master controller 400.
Music accompaniment apparatus can have at least one microphone 200 and basically have two microphones 200.
Except the outward appearance of common microphone, microphone 200 comprises button input part 295, display part 290 and is connected to the antenna (not shown) of RF emitter/receiver module.
As mentioned above, the present invention reduces production cost and strengthens transmitting/receiving efficient with an emitter/receiver module that is connected to master controller, kind according to the external unit that connects is controlled audio output level, thereby reappears the sound signal of distortionless best tonequality.
Invention has been described to have used preferred embodiment.It should be understood, however, that scope of the present invention is not limited to the disclosed embodiments.On the contrary, scope of the present invention is intended to be included in those skilled in the art and uses multiple improvement and alternative arrangement and equivalent in the ability known or future technology.Therefore, the scope of claim should be consistent in order to comprise all this improvement and analog structure with the understanding of broad sense.
Claims (5)
1. music accompaniment apparatus, it comprises:
At least two wireless microphones, it is used for outside input audio signal is converted to electric signal, and uses built-in RF transmitter module to send described electric signal by wireless connections; And
Master controller, it has a RF receiver module, described RF receiver module can receive signal from described at least two wireless microphones simultaneously by at least two receiver channels, described master controller receives the sound signal from described at least two wireless microphones, described sound signal is mixed with accompaniment signal and the caption signal of embedding, and output signal is sent with the output level that the kind according to the external unit that is used as export target changes
In described at least two wireless microphones each receive to be used for controlling the control signal of described master controller and the load button in the outside by being arranged on described wireless microphone to be sent to the data-signal of described master controller, and additionally described control signal and described data-signal are sent to described master controller by described RF transmitter module
Described master controller receives described control signal and described data-signal by described RF receiver module,
Wherein said master controller comprises:
Signal receiving part, it is used for receiving sound signal, control signal and data-signal from described at least two microphone wireless transmissions, and divides to the received signal and process;
Host CPU, the multiple interfaces that it has the common treatment input/output control unit of at least two signals that apply for the I/O outside and comprises memory interface and optical interface, described host CPU control comprises all operations were of audio frequency, the emission that control and data signal or output control;
The signal efferent, it is controlled by described host CPU, described signal efferent is processed data and sound signal storage inside or that receive by described signal receiving part, and the signal that will process is sent to external unit with the output level that the kind according to external unit changes; And
Storage part, it is configured to for data backup, and storage operating system and comprise music related data for the various software of the operation of described master controller, audio file and movie file,
Described signal efferent comprises:
Audio output part, it is used for output by described at least two microphones sound signal that receives and the accompaniment signal that is stored in described storage part,
Described audio output part comprises:
The equipment selection portion, it is used for selecting to be connected to by wired or wireless connection the kind of the external unit of described music accompaniment apparatus, in order to the sound signal that receives by described at least two microphones or the sound signal that comprises the accompaniment signal that is stored in the described storage part are carried out the outside reproduction; And
The output level control part, it controls the outside output level of the audio output signal that outputs to described external unit for the selection signal that responds described equipment selection portion.
2. music accompaniment apparatus as claimed in claim 1, wherein said output level control part comprises at least one level converter, it is used for controlling the described outside output level of described audio output signal.
3. music accompaniment apparatus as claimed in claim 2, the described outside output level of wherein said audio output signal is to control by the operation mains voltage level of controlling described level converter.
4. music accompaniment apparatus as claimed in claim 1, wherein said output level control part control outside output level so that the described outside output level when being televisor by the selected described external unit of described equipment selection portion is lower than the described outside output level when described selected external unit is audio frequency apparatus (AMP).
5. music accompaniment apparatus as claimed in claim 1, wherein said output level control part comes storing predetermined average maximum level by device category, and described outside output level is controlled to corresponding to the described average maximum level by the selected equipment of described equipment selection portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020070099333A KR101000720B1 (en) | 2007-10-02 | 2007-10-02 | Wireless music accompaniment apparatus having control function of audio signal output level |
| KR10-2007-0099333 | 2007-10-02 | ||
| KR1020070099333 | 2007-10-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101404156A CN101404156A (en) | 2009-04-08 |
| CN101404156B true CN101404156B (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101088866A Expired - Fee Related CN101404156B (en) | 2007-10-02 | 2008-05-27 | Wireless music accompaniment apparatus having control function of audio signal output level |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101000720B1 (en) |
| CN (1) | CN101404156B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106656527A (en) * | 2016-11-28 | 2017-05-10 | 恩平市亿歌电子有限公司 | Split type wireless conference system |
| CN112687248B (en) * | 2020-12-22 | 2023-10-31 | 广州番禺巨大汽车音响设备有限公司 | Audio playing control method and device based on intelligent DJ sound system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2175961A1 (en) * | 1996-05-07 | 1997-11-08 | Chae Woo Lee | Wireless accompaniment apparatus |
| JP2001215980A (en) * | 2000-02-02 | 2001-08-10 | Kori Karaoke Tech Co Ltd | Microphone device with portable video accompanying function |
| CN1326181A (en) * | 2000-05-27 | 2001-12-12 | 株式会社音特技术 | Portable karaoke device |
| KR20020006293A (en) * | 2000-07-12 | 2002-01-19 | 최길호 | Portable wire/wireless player of children's song for their education |
| KR20040028433A (en) * | 2002-09-30 | 2004-04-03 | 주식회사 에스앤테크 | wireless and portable karaoke |
| KR20050110592A (en) * | 2005-11-01 | 2005-11-23 | 테크온팜 주식회사 | A karaoke system using the portable digital music player |
| KR100625457B1 (en) * | 2005-04-20 | 2006-09-20 | 티제이미디어 주식회사 | Apparatus for automatic on/off control and notify discharge of wireless microphone with karaoke device |
| KR100718843B1 (en) * | 2006-05-09 | 2007-05-18 | 주식회사 엔터기술 | A dvd song accompaniment device |
-
2007
- 2007-10-02 KR KR1020070099333A patent/KR101000720B1/en active IP Right Grant
-
2008
- 2008-05-27 CN CN2008101088866A patent/CN101404156B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2175961A1 (en) * | 1996-05-07 | 1997-11-08 | Chae Woo Lee | Wireless accompaniment apparatus |
| JP2001215980A (en) * | 2000-02-02 | 2001-08-10 | Kori Karaoke Tech Co Ltd | Microphone device with portable video accompanying function |
| CN1326181A (en) * | 2000-05-27 | 2001-12-12 | 株式会社音特技术 | Portable karaoke device |
| KR20020006293A (en) * | 2000-07-12 | 2002-01-19 | 최길호 | Portable wire/wireless player of children's song for their education |
| KR20040028433A (en) * | 2002-09-30 | 2004-04-03 | 주식회사 에스앤테크 | wireless and portable karaoke |
| KR100625457B1 (en) * | 2005-04-20 | 2006-09-20 | 티제이미디어 주식회사 | Apparatus for automatic on/off control and notify discharge of wireless microphone with karaoke device |
| KR20050110592A (en) * | 2005-11-01 | 2005-11-23 | 테크온팜 주식회사 | A karaoke system using the portable digital music player |
| KR100718843B1 (en) * | 2006-05-09 | 2007-05-18 | 주식회사 엔터기술 | A dvd song accompaniment device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101404156A (en) | 2009-04-08 |
| KR20070110811A (en) | 2007-11-20 |
| KR101000720B1 (en) | 2010-12-14 |
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