CN1112668C

CN1112668C - Portable music performance device

Info

Publication number: CN1112668C
Application number: CN94190584A
Authority: CN
Inventors: 李世嵱
Original assignee: Nas Electronics
Current assignee: Cowbit Bridge Corporation; Enter Tech Co Ltd
Priority date: 1994-05-19
Filing date: 1994-05-19
Publication date: 2003-06-25
Anticipated expiration: 2014-05-19
Also published as: CN1113399A

Abstract

The present invention relates to a portable music performance device which comprises an outer audio input such as voice sent into a microphone by a singer singing song lyrics, and stored music accompaniment data for songs, preferably data stored in an ROM packet and used for producing an RF signal transmitted to an amplifier.

Description

Portable music performance device

The present invention relates to a kind of one self-contained hand-held music player, it allows the musical background lyrics that give song recitals of a singer along with the device stored, and singer's the performance and the music of record are delivered to general radio receiver to play it by radio transmission.

As know, the vocal accompaniment instrument in modern times generally is referred to as outer karaoke OK system, is like this structure, by the electro-acoustic system lyrics that the singer sang is sent into a microphone that carries out mixing sound with the musical background of recording and performs.Typical karaoke OK system comprises a tape or a video disc in order to the playback chant music.The singer can make the musical background mixing sound of his or her sound and playback perform selected song by microphone, and enjoys the enjoyment of singing.Become very popular among the masses at karaoke OK system old and young any age no matter, they wish to promote its performing effect with selected musical background.There are many dining rooms and bar to possess the program at the night that Karaoke is arranged at present, see through directly charge simultaneously or sing or only appreciate the spectators that other clients sing with karaoke OK system by its beverage of selecting charge for its participation indirectly.

A kind of typical card karaoke system that is used for the bar comprises a microphone, one has the total relief sound system of the powerful amplifier system that can produce complete and powerful mixing sound, one echo generator in order to the sound effect that improves the singer, one separating controlling unit so as the singer can from its position control song of standing select timely preface and microphone volume, also have the rhythm and the pitch of music, and provide the selection of its a large amount of songs.Microphone and control module all transmit signals to stereophonic sound system via an electric wire, and selected and singer's sound are carried out mixing sound by stereophonic sound system under suitable setting vocal accompaniment sound music is played by this system.Because the data limit of tape or CD-audio, these karaoke OK systems need third parties, as the waiter in the bar, carry out selecting vocal accompaniment music in the stereophonic sound system for the singer from many titles of the song.Some karaoke OK systems also comprise a TV monitor to show that song lyrics is so that the singer may be read into the lyrics in the performance process.

If someone can with more than list all component and link together and place a place, so just a karaoke OK system can be set at home.But for the individual, it will be very expensive preparing each parts.At the music storage device that will be used to select abundant song, have the powerful amplifier system that can produce complete and powerful mixing sound and the controller of separation etc. when all taking into account, the typical card karaoke system also is very heavy.It is very inconvenient that the size of equipment and the quantity of assembly make in the travelling, and most of equipment all needs the required standard plug of power supply.This will limit the place that can use karaoke OK system widely.

The another kind of purposes of karaoke OK system, what both present young man was liked provides the selected song and the purposes of sound equipment power with karaoke OK system, is to sing Karaoke when being sitting within the automobile.The assembly that installs essential typical card karaoke system on a car stereo system additional is possible.But, with this system suitable difficulty then when a car is converted on another car.

Moreover, microphone or music data reservoir can be with system logotype but may with another system's logotype, therefore, in order to the system that plays the vocal accompaniment music and the lyrics and be not easy between system, to change.

Another use again of karaoke OK system is the open air performance on program picnic or the seabeach, but similarly, its equipment size and for required song select and enough the necessary assembly of audio of brute force this use is limited.

Moreover some family has more than one karaoke OK system.Typically, this family may have a main system that comprises the stand-alone card karaoke system assembly that some link together with circuit.This system generally may appear at the normal room of assembling of guest, for example living room or the family Room or main amusement room etc.One cover comprises being arranged on a supplement card karaoke system among the big shell and also may existing all system components.Particularly when there is too many guest in the host and guest room, then need two cover systems in case two not the guest in the chummery can appreciate a singer's performance.But this need carry out complicated repetition line between two or more systems and different system does not generally possess the Wiring device that allows other system listen to via a system for a performance.Another purposes of two systems is the power of combination multisystem in a room.But this need carry out the repetition line of complexity and the Wiring device that different system does not generally possess the power supply that supplies two systems of combination again between two or more systems.

Therefore, wishing has a kind of system can overcome the substantial restriction of existing system, require and the restriction of aspect such as dirigibility such as size, power supply and for the separation assembly of the use of two neighbor systems, and karaoke OK system can be carried to the user use Anywhere and do not have a restriction in place.

The price of idealized system is not also answered too high and is made the consumer purchase a cover domestic system with reasonable price.

The present invention is intended to overcome the traditional music accompanying system, or claims karaoke OK system, more above-mentioned shortcomings.Therefore, one of the present invention purpose provides a kind of portable music performance device, wherein people's sound and selected vocal accompaniment music is carried out mixing sound and is sent to a common radio receiver and an amplifier system.

Another purpose of the present invention is, a device that can carry out stereo processing to the vocal accompaniment music that produced and people's sound is provided.

Another object of the present invention is, provide one can store many songs and in comprise one allow the singer from the selection of its station location control song, rhythm tempo, echo effect, and sing the device of the controller of the volume of broadcasting.

Another purpose again of the present invention is, provide unrestricted its size and power supply to be defined in the locality, it can easily be carried and can be had such as three-dimensional radio receiver of family expenses or wireless local use of conventional wireless electricity such as stereophone receiver and amplifier system or a stereo automobile audio or a portable radio or small-sized carry-on radio any by a single individual.

A further object of the present invention is that it can be sent to one family, automobile or carry-on radio by a strong complete and strong amplifier of made mixing sound with people's sound and vocal accompaniment music.

Aforementioned purpose is to utilize a self-contained hand-held music performance device to reach according to the present invention, and it comprises that one contains the Storage Media of the vocal accompaniment music data of representing many songs; One in order to retrieval vocal accompaniment music data and produce the indexing unit of first signal of representing accompaniment music; One in order to produce the microphone of the secondary signal represent audio input signal (such as the singer's of the lyrics that give song recitals sound); One in order to mixing sound and handle first and second signal to produce one the 3rd Signal Processing device; And a transmitting set in order to the 3rd signal is sent with the receivable radiofrequency signal of a kind of radio.The processor of this device can be adjusted tone, rhythm tempo, echo and the volume of performance.

Comparatively ideal is that this device comprises and the relevant song recognition data of vocal accompaniment music data, so that the user optionally produces a desired song.This device comprises a push-button array and does selection to allow the user.

The preferred embodiment of one of this device comprises a ROM bag in order to storage vocal accompaniment music data, and it can store about 1200 songs.One preferred embodiment of this device also comprises the lead socket that can be installed the additional ROM bag of access by this.This allows a user to select its desired accompaniment music from large quantities of selection groups that are stored in a plurality of ROM bag and does not limit the user and can only elect from originally be stored in the interior music of this device.The user can buy music categories and can exchange the ROM bag with their friend to obtain the selection of wider model according to its inclination.

Self-contained device enough little so that its can carry conveniently and can easily transport.The user can use this device in arbitrary place that has traditional fremodyne, no matter in car, in the family or outdoor, only need a large-scale portable receiver or a small-sized walkman radio to get final product.This device can use the powerful amplifying power of many family expenses, automobile, a large-scale portable receiver or small-sized walkman sound equipment and amplifier system, so that the sound of gained is complete and strong.This device can provide the selection of about 1200 first songs.

The transmission of performance is not limited to be received by a radio, and can be received by many different fremodynes that are adjusted on the same frequency, therefore performance can be by at home or two or more radios in some other place and amplifier system and listened to, so that many people who has individual formula, portable, carry-on machine or automobile audio can both appreciate same performance.Moreover the booster output of two systems can merge.Controller on the device is given the performing artist to the sound that produces from its place of standing control ability and can significantly strengthen the tonequality of its song completely.

Above-mentioned purpose and other advantage of the present invention with reference to following in conjunction with the accompanying drawings to the narration of the present invention's embodiment after with easier understanding.In the drawings:

Fig. 1 is the block scheme of the typical card karaoke system of no lyrics demonstration well known in the prior art.

Fig. 2 is the block scheme of one of the present invention embodiment, shows simultaneously that an embodiment uses but a receiver that one of non-the present invention installs.

Fig. 3 is one according to the diagram of an exemplary enclosure of the present invention's device and shown some external control elements;

Fig. 4 is the calcspar of embodiment;

Fig. 5 is a sound reproduction device key diagram partly among the embodiment;

Fig. 6 is the circuit diagram of embodiment medium frequency modulator;

Fig. 7 is the process flow diagram of representative by the computer program instructions of microprocessor execution among Fig. 4, and it is in order to carry out the control function of embodiment; And

Fig. 8 is the circuit diagram of one second embodiment of a frequency modulator useful in device of the present invention.

In all diagrams, unless outside stating separately, identical reference number and letter system are in order to represent feature identical among the same explanation embodiment, element, component or part.Moreover, describing in detail the while of the present invention below in conjunction with accompanying drawing, it also will be with the related explanation of a preferred embodiment.Under the super situation of leaving defined true scope of the present invention and spirit, can change and upgrade as appended patent claim.

Fig. 1 has described a typical known card karaoke system, and just it does not have the television indicator of demonstration lyrics.This system comprises a central location 50, an amplifier 51, loudspeaker 52 and 53, a microphone 55, a controller 57, music data 59, reaches lead 54,56 and 58.Microphone 55 and controller 57 are connected to central location 50 respectively by lead 56 and 58.But this microphone also can be a wireless microphone.Music data 59 can be discretely stored with the tape that will be placed among the central location 50 and be reset or the form of laser disc, also can be stored among the central location 50.Amplifier 51 is according to the mixing sound signal of exporting sound and vocal accompaniment music from the signal that microphone and central location produced, adjusted and delivers to loudspeaker 52,53 according to controller.Raise one's voice and be connected to amplifier 51 via lead 54 along 52,53.The legacy card karaoke system has controller, a large-scale central location and a large-scale loudspeaker that separates, and they all are not easy to move and need connect with many wiring between each assembly.

These restrictions with and to the demand of large-scale power supply supply, make the legacy card karaoke system become a fixed system and be unsuitable for carrying.

The present invention has exempted the needs to central location and music system by music data storer, controller and microphone being merged into a single self-contained hand-held device, thereby has overcome these restrictions.Fig. 2 briefly shows the karaoke OK system of use apparatus of the present invention.Device 70 comprises a microphone part 71, a controller part 72 and a transmitter portion 73.This device and a fremodyne 74 logotypes, it comprises a receiver part 75 and a speaker portion 76 in order to the audio frequency output that produces the signal that sends from Caraok device 70.Signal 77 preferably is a kind of by installing 70 FM signal that produce and being sent to a frequency bin 74.Fremodyne 74 can be portable radio sets, mobile stereo, home stereo, or any reception FM signal and via a loudspeaker or several loudspeaker any form with its device of broadcasting.

Many general receiver systems all comprise a powerful amplifier.

Though the frequency of frequency modulation is preferable, also may transmits and receive with other frequencies.The shown system architecture of Fig. 2 allows that Caraok device 70 carried and be not subjected to the complicated cable or the restriction of power requirement easily.

FM reception apparatus 74 also can be small size, and such as a pocket radio, and Caraok device 70 does not limit and an acceptor device logotype.Therefore, this can also be installed 70 and between different automobiles or different home, replace use, as long as this place is provided with a FM Receiver.

Fig. 3 shows the suitable shell that is used for Caraok device 70 and some control.Shown is control panel and the additional controller 81 that a microphone part 71, has a push-button array 2 and a display board 7.Transmitter 73 is stored in the substrate of Caraok device 70.Control panel 80 and the controller of replacing 81 allow that the user selects a specific accompanying song also to change the acoustic characteristic of signal as described below.

With reference to Fig. 4, device 70 comprises two parts: accompaniment tone reproducer and frequency modulator.

The accompaniment tone reproducer comprises that ROM bag 1 or external ROM wrap 1a, push-button array 2, microprocessor 4, storer 5, display board 7, traffic pilot 8, double-tone source controller 11 and

amplifier

12,12a.

Various accompaniment musics with related names number are stored among ROM bag 1 or the 1a with the form of digital signal.

This bag can be stored about 1200 first songs.ROM bag 1 be built into can extend to required more than.From push-button array 2 inputs, these inputs and the high frequency timing pip that is produced by X-tal oscillator 3 are conducted to microprocessor 4 by the selected name of user designation code in representative, and it carries out total system control according to the program that is stored in its internal storage then.This programmed instruction is stored in the storer 5 that is made of a sram device corresponding to the music data of selected name designation code.The retrieval that this microprocessor 4 is also controlled the music data that wraps from ROM by means of traffic pilot 8, d type flip flop 9 and demoder 10.

Moreover microprocessor 4 produces the demonstration of system's merit attitude state on display board 7 via a lcd driver 6.In addition, microprocessor 4 makes that the vocal accompaniment music playback signal in double-tone source controller 11 can be amplified by

amplifier

12 and 12a.

The frequency modulation (PFM) of device 70 partly comprises an external voice input end 13, an internal microphone 15 (corresponding to the microphone among Fig. 3 71),

voltage amplifier

14 and 16, a frequency filter 17, a tone controller 18, an echo tone generator 19, a radio frequency (RF) modulator 20, a gain controller 21, a noise filter 22, a power supply 23 and antenna 24.

From its may for the external input terminals 13 of an external microphone or be provided to

voltage amplifier

14 and 16 respectively from the audio frequency input of internal microphone 15.The sound signal that is exaggerated then is adjusted suitably selecting required waveform by frequency filter 17, and selects the tone of its " height " or " low " level further through tone controller 18.By tone controller 18 sound signal that is produced and the echo signal that is optionally produced by echo gecerator 19 mixing sound mutually, the sound signal behind mixing sound is sent to radio frequency modulator 20, and the latter is a radio frequency waveform with this conversion of signals then.Radio frequency waveform is the form of legacy frequencies modulation (FM) band signal.Above-mentioned sound signal through amplifying again through the additional control of gain controller 21 strengthening the covert position of its difference variable-gain and difference, and then improve signal to noise ratio (S/N ratio) and reduce the noise that occurs in the signal by means of making gain controlled signal pass through noise filter 22.Signal behind noise-decreasing then is sent to modulator 20 with combined with the video-audio signal.

Controlled audio input signal and playback vocal accompaniment music signal from

amplifier

12 and 12a are sent to radio frequency modulator 20 simultaneously, and what be loaded with voice and vocal accompaniment music is transmitted to public FM receiver through the FM modulated output signal via antenna 24.

With reference to Fig. 5, it shows the more drawings in detail of the vocal accompaniment musical sound replay device of a Fig. 4.The ROM bag 1 of the name designation code that is used for digitally storing various vocal accompaniment music and is correlated with has an additional ROM bag 1a, and it and some additional ROM of a permission wrap and are coupled by the external interface 1b of plug-in mounting.The use of outside plug-in type ROM bag can make device beyond the inner ROM bag of access, can also carry out access to the vocal accompaniment music more than being willing to as the user.

The ROM bag can be stored separately with Caraok device and optionally is connected to system, so makes the user to select the ROM bag according to its personal music hobby.

Push-button array 2 has in order to 0 to 9 the numerical key of selecting a song title number of desiring, rhythm tempo controller key SW1, in order to the interval controller key SW2 of the tone that changes music, adjust key SW3, SW4 up and down, it is adjusted to desired value in order to play when music and key SW1 and SW2 during respectively by starting with rhythm tempo and music tone.

Push-button array 2 also comprise one in order to encounter problems in the middle of operation as the operator or in selection course, restore the system to its normal or virgin state by to a wrong button time reset button SW5; one is stored in the vocal accompaniment music in the ROM bag and need not further to select the continuous performance key SW6 of song title in order to continuous performance; one in order to select the ROM bag options button SW7 of any one extendible ROM bag when some extendible ROM bags are connected to expansion interface 1b; one usefulness is so that obtain the echo key SW8 of Echo from the sound input of microphone; one in order to the beginning of playing selected vocal accompaniment pleasure or play key SW9; one in order to the performance of interrupting the vocal accompaniment music stop key SW10 with the title that changes selected works; and one in order to provide the power switch key SW11 of power supply to system by starting power supply 23; this power supply is provided by a power supply unit, and it can be an internal cell.

Be provided to microprocessor 4 from the input of push-button array 2 and the timing pip that is produced by X-tal oscillator 3, this microprocessor is carried out total system control according to the following program circuit that will illustrate then.Microprocessor 4 will arrive among the storer 5 corresponding to the data storage of selected vocal accompaniment music.Simultaneously, microprocessor 4 optionally provides a sequence data output signal, clock signal and a LCD load signal to lcd driver 6 via internal data bus 50, and produces the seven fields demonstration of a functional status on display board 7.

When selecting a specific data item the data that microprocessor 4 is stored in ROM bag 1 or ROM bag 1a by internal data bus 50, such as the vocal accompaniment music, chosen data is written into storer 5 via traffic pilot 8 and code translator 10 or reads from storer 5, and output data is latched by d type flip flop 9 simultaneously.These output signals, that is from chip select signal YM1, YM2 and read and write signal RD3, a WR4 from traffic pilot 8 of code translator 10, all provided to double-tone source controller 11 via internal data bus 90.Double-tone source controller 11 comprises two melody integrated circuit (IC) 11a and 11b, oscillator 11c and two digital-to-analogues (D/A) converter 11d and 11e.In response to this, melody IC 11a and 11b produce stereosonic tempo signal on the basis from the music data of ROM bag 1 or 1a retrieval.The output signal of melody integrated circuit 11a and 11b each by D/A converter 11a and 11e sampling with the simulating signal of acquisition corresponding to original accompaniment music.Output from D/A converter 11d, 11e is amplified by

amplifier

12,12a, as radio-frequency modulator 20 is desired.

Fig. 6 has described the detailed circuit diagram of installing 70 frequency modulator part.From outside input 13, by external microphone provided or be provided to

voltage amplifier

14,16 from the audio frequency input of internal microphone 15, it comprises transistor Q1 and Q2 respectively, so that obtain a suitable incoming level.Each audio input signal through amplifying is by means of two transistor Q3 of frequency filter 17 and Q4 and filtered, and via the tone controller 18 that comprises transistor Q5, resistance R 2, R3 and capacitor C 2, C3 by suitably shaping.

With respect to its " height " or " low " tone and the audio input signal of shaping is provided to radio frequency modulator 20, this radio frequency modulator 20 also receives the output signal from echo generator 19 by optionally.Generator 19 belongs to the design of tradition and comprises a clock 19a and bucket chain formula (electric charge coupling) device 19b and produce an echo with delay low noise output of the time constant that is determined by variable resistor VR1, capacitor C 1 and resistance R 1.

Echo just produces when only echo key SW8 starts in push-button array 2.

Control from the audio input signal through amplifying of

voltage amplifier

14 or 16 to strengthen its differential gain and phase place by the gain controller that comprises divider resistance R4 and R5.As a result, the signal to noise ratio (S/N ratio) of signal (S/N) comprises that by utilizing as shown in Figure 6 the noise filter that constitutes 22 of resistance and electric capacity R6, C4 and R7, C5 removes the noise composition, makes the signal to noise ratio (S/N ratio) (S/N) of signal be improved.Sound signal is after treatment mixed mutually with the echo that echo generator 19 optionally produces, and controlled audio input signal and provided simultaneously to radio frequency modulator 20 from the playback of

amplifier

12 and 12a vocal accompaniment music signal, radio frequency modulator 20 is transformed into audio input signal among the radio frequency of specified traditional F M frequency band by means of 1FT coil L1 and transistor Q6.This radiofrequency signal is then finely tuned in radio frequency modulator 20 by power choke coil L2 and transistor Q7.At last, being loaded with singer's the sound and the FM modulated output signal of vocal accompaniment music can launch via antenna 24, and is received by the FM receiver on the output frequency that is tuned in this device.

In this embodiment, when the power switch key SW11 in the push-button array 2 is activated, supply voltage from internal cell (for example Voltaic battery) directly is conducted to note amplifier and radio frequency modulator, and 5 volts operating voltage (Vcc) provides other parts to circuit by means of the voltage stabilizer 1C in the power supply 23.

Fig. 7 shows the process flow diagram of representative according to the present invention by the performed programmed instruction of the microprocessor 4 of Fig. 4, and it is used for execution control function.In step 100, judge whether comprise a suitable power supply, be 9 voltaic elements in the present embodiment.If there is not required power supply, then request is charged or is changed suitable power supply in step 101.If detect power switch SW11 in step 102 is " opening " state, then microprocessor 4 provides data-signal LCD DATA, clock signal LCDCLK, load signal LCD LDP to lcd driver 6 in step 103, and in display board 7, show " 1 ", represent the normal working voltage Vcc that is supplied from power supply 23.

In order to use microphone/RF signal generator, require to carry out some additional steps.These steps are included in the step 104 and start FM receiver and amplifier at a distance, in step 105 with they be tuned to predetermined frequency (98.1 ± 1MHz or 100 ± 1MHz) for example, and in step 106, adjust the suitable volume level of amplifier.If in step 107, receive input from the numerical key of the song title of represent institute's desire choosing in the push-button array 2, according to the state of SW7 by traffic pilot 8 selected ROM wrap 1 or 1a in one of, and retrieve the storage data of correspondence by means of data bus 90.Whether if, play key be " open ", then optionally lock these data by d type flip flop in step 109 and the music data of being stored is read if in step 108, judge playing key SW9 and being activated.

Provide melody IC 11a, 11b from the numerical data that is retrieved of ROM bag 1 or 1a via traffic pilot 8 to double-tone source controller 11.Melody IC 11a, 11b be according to the output that produces stereo rhythm from the output of oscillator 11c, and be to provide to separately D/A converter 11d, 11e, sampled and be converted to simulating signal in these data.Simulating signal is provided for amplifier 12a, 12b, and the simulation vocal accompaniment music signal after amplifying is provided to radio frequency modulator 20 in step 110, in order to convert it to the FM radiofrequency signal, to launch through antenna 24.

Whether judge in next step 111 has the signal that comes from outside or internal microphone to be present in sound input end.If singing of the vocal accompaniment music that the performance of user's desire retrieves from storer of the present invention, then audio input signal mixes mutually with this vocal accompaniment music signal in step 112.

If in above-mentioned operating period, started stop key SW10 in the push-button array 2 in step 113, the performance of selected vocal accompaniment music is stopped in step 114.In step 115, if wish to change the tone of vocal accompaniment music, and start interval operating key SW2, then the tone of this tune is adjusted to the value of being desired in the playing procedure of music.In step 116, control control and adjust up and down that key SW3 and SW4 are controlled to select suitable level.

If rhythm tempo operating key SW1 is activated in step 117, then in step 118, adjusts the operation of key SW3 and SW4 up and down and make the rhythm tempo can be by pressing repeatedly according to need respectively that corresponding key makes it to accelerate or slack-off.In above-mentioned interval and rhythm tempo control and treatment process, microprocessor 4 is carried out a display process and demonstrate adjusted value on display board 7.

In step 119, if find to have started echo key SW8 in order to obtaining echo effect from the sound input of microphone, the echo signal that is produced by echo generator 19 be provided to radio frequency modulator 20 and in step 120 with modulation after signal mix mutually.If find in step 121, to have started ROM bag assignment key SW7 and provide extendible ROM bag 1a, but in step 122, select the expansion ROM bag desired by traffic pilot 8, and the vocal accompaniment music desired of permission selection.Each ROM bag can comprise the music of a certain kinds kenel, such as country music or pop music, can be the song collection of one group of hobby, or can be and come from a certain or some particular artist persons.Holding within the ROM bag can be ever-changing.

Be used if play continuously key SW6 in step 123, so in step 124, the follow-up performance that is stored in the vocal accompaniment music among ROM bag 1 or the 1a is performed under the situation of title of the song selection not needing to do.Optionally handle the audio input signal of the vocal accompaniment music that comprises sound and retrieved a mixed signal to be provided and on the FM channel, to launch it according to device 70 of the present invention in a stereo mode.The structure of the self-contained Caraok device of this and general FM receiver logotype allows portable use, and it can be in a room, and is outdoor or in a moving vehicle, as long as just be provided with a FM receiver and can use.One user even the music of accompanying can walk out of doors the time are sung, and use a small portable radio to receive the signal that is sent.

Fig. 8 describes the circuit diagram of frequency modulator one second embodiment partly of Fig. 6.The frequency modulator of Fig. 8 partly comprises echo generator 30, tone controller 31, gain controller 33, noise filter 34, radio frequency modulator 35 and antenna 36.The echo generator comprises a bucket Biodge device 30a who is connected with resistance R 11, R12 and capacitor C 11, C12, producing an echo signal by the delay of the time constant that value was determined of R11, R12 and C11, C12, itself and by push-pull transistor Q11 and Q12 and echo signal is amplified.

Echo output is provided to tone controller 31, so as by to adjust variable resistor VR11 the magnification of oxide-semiconductor control transistors Q13, and mix mutually with sound input from stereophony microphone input end 32 and 32a.The echo output signal is also controlled with respect to the sound incoming level by transistor Q14.

After selected echo, one is provided to gain controller 33 with audio input signal that this echo is mixed mutually, and it comprises that operational amplifier OP1, a volume of a feedback loop that is made of resistance R 13 and capacitor C 13 regulate the wave filter that variable resistor VR2 and is made of resistance R 14, R15 and capacitor C 14, C15.The amplification input signal of being handled by operational amplifier OP1 is maintained at a suitable volume level by means of volume adjusting variable resistor VR2.Audio input signal then is divided into stereo audio signal MIC-L and MIC-R by wave filter.

Stereo audio signal MIC-L and MIC-R mix their noise filters by being made of resistance R 16, R17 and capacitor C 16, C17 mutually with the vocal accompaniment music signal IN-L and the IN-R that reset respectively.This mixed signal is fully amplified by a note amplifier IC34a, by radio frequency modulator 35 conversion, and is finely tuned by a radio frequency that oscillator produced that is made of inductance L 11 and transistor Q15.

So, the modulated output signal that is loaded with singer's sound and vocal accompaniment melody can be sent out via antenna 36, and can be received by common FM receiver in the transmission scope.From internal electric source, be one 9 voltaic elements in the present embodiment, supply voltage directly be supplied to note amplifier and radio frequency modulator, and by the voltage stabilizer in the power supply (not shown), when the power switch SW11 in push-button array 2 was activated, the operating voltage of a 5V (Vcc) was provided to other parts of circuit.

Aforementioned person only illustrates the present invention's principle.Therefore, will be understood that obviously that the spirit that those skilled in the art can be according to the present invention and derive various system and methods in the present invention's scope is not though they are narrated out in this manual one by one detailedly.

For example, can utilize some equivalent integrated chip devices to realize each funtion part, and just can obtain more smart little system like this according to the present invention's device.

This will help to carry more expediently this system, also allow the user to carry it in a hand.

Claims

1. portable music performance device comprises:

Memory storage, it comprises the data of the vocal accompaniment music of representing how first song; Indexing unit is in order to retrieval vocal accompaniment music data and produce first signal of representing this vocal accompaniment music; Microphone apparatus is in order to produce the secondary signal of a response one audio input signal; Treating apparatus is in order to mix described first signal and secondary signal mutually to produce one the 3rd signal; And emitter, in order to described the 3rd signal can be launched by the RF signal that radio receiver received as a kind of.

2. device as claimed in claim 1, wherein memory storage further comprises the song recognition symbol data relevant with the vocal accompaniment music data of each first song, and further comprise the control device that is available for users to operate, in order to pass through to select suitable identifier data access one selected song.

3. device as claimed in claim 2, wherein said control device comprise one in order to import the push-button array that song recognition accorded with and adjusted the audio characteristic of described audio input signal.

4. device as claimed in claim 1, wherein said vocal accompaniment music data with digital store in described memory storage.

5. device as claimed in claim 4, wherein said memory storage comprise ROM bag.

6. device as claimed in claim 5, wherein said ROM include an interface socket in order to the ROM bag of accepting some other separation.

7. device as claimed in claim 1, wherein said indexing unit comprise one in order to carry out the microprocessor of some predetermined control operations.

8. device as claimed in claim 1, wherein said treating apparatus further comprises a tone controller.

9. device as claimed in claim 1, wherein said treating apparatus further comprise a double-tone source controller in order to the rhythm tempo of adjusting the vocal accompaniment music.

10. device as claimed in claim 1, wherein said treating apparatus further comprises an echo gecerator.

11. device as claimed in claim 1, wherein said treating apparatus further comprises a gain controller.

12. device as claimed in claim 1, wherein said treating apparatus also comprises a noise filter.

13. device as claimed in claim 1, wherein said emitter comprise one in order to the radio frequency modulator and that is a modulated radio signal with described the 3rd conversion of signals in order to launch the antenna of described radiofrequency signal.

14. device as claimed in claim 1, wherein said storage device are one to have the vocal accompaniment music and be stored in the ROM bag of related names number wherein with digital signal form; Indexing unit comprises one in order to the song title number of selection institute desire choosing and in order to the push-button array of the audio characteristic of adjusting sound signal to be provided, described indexing unit comprises one in order to when the input that receives from push-button array, carry out predetermined control operation according to the program routine that is stored in the microprocessor internal storage, and in order to select to be stored in the microprocessor of the music data in the storer via a traffic pilot and code translator; And described device further comprises one in order to the display board via the functional status of lcd driver display system.

15. device as claimed in claim 14, wherein said treating apparatus further comprises: one in order to according to coming from by d type flip flop through the music data that retrieves of the ROM of two melody integrated circuit locking bag and stereo real estate tight knot is played the double-tone source controller of signal; In order to amplify from the external input terminals that is connected with an external microphone or from the voltage amplifier of the audio frequency input of an external microphone; One in order to carry out the tone controller of integer to the audio input signal through amplifying; One in order to optionally to produce an echo gecerator about the echo of the low noise output of the delay of audio input signal; One in order to strengthen from the differential gain of the audio frequency input of voltage amplifier and the gain controller of differential phae; And one in order to by removing the noise filter that the noise composition that is contained in the output signal improves the signal noise ratio of gain controller output signal.

16. device as claimed in claim 15, wherein said emitter comprise one in order to the audio input signal after will mixing mutually with the echo that optionally produces by echo gecerator and from the vocal accompaniment music signal of double-tone source controller convert to after the modulation will be by the antenna emission the radio frequency modulator of radiofrequency signal.

17. device as claimed in claim 16, wherein the ROM bag has the interface socket that is used to insert discrete ROM bag.

18. device as claimed in claim 17, wherein said push-button array comprise the numerical key 0 to 9 in order to the song title number of selecting institute's desire choosing; one rhythm tempo operating key; one interval operating key; in order to the adjustment that when music is in performance, rhythm tempo and tone is adjusted to a value of desiring button up and down; one in order to run into operational issue or system is returned to when making a mistake the button of reseting of its normal or original state when selecting certain button as the user; one plays continuously the continuous performance key that is stored in the vocal accompaniment music in the ROM bag in order to need not select a song title; one in order to any one ROM bag assignment key in all ROM bags of selecting to separate; one in order to the echo button of acquisition from the Echo of the sound input of microphone; one in order to the beginning of playing selected vocal accompaniment music or play button; one stopping key in order to the performance of interrupting the vocal accompaniment music; and one in order to provide the power switch of power supply to system from an internal cell.

19. device as claimed in claim 16 further comprises a frequency modulator, it comprises and has one in order to produce an echo signal and in order to the echo gecerator of the chain jamming formula device that amplifies described echo signal by push-pull transistor; Tone controller is in order to the magnification of the control echo signal by the variable resistor of adjusting echo gecerator and in order to mix the sound input from the stereophony microphone input end; Gain amplifier with an operational amplifier; One volume is adjusted variable resistor; One wave filter that constitutes by resistance and electric capacity, it is in order to making the input signal that is exaggerated by operational amplifier have suitable volume level by adjusting described variable resistor, and in order to by this wave filter audio input signal is divided into stereosonic sound signal; And radio frequency modulator, in order to the noise filter that described stereo audio signal is mixed mutually with the vocal accompaniment music signal of playback and pass through to form by resistance and electric capacity, and in order to finely tuning, and in order to the modulated output signal of the sound and the vocal accompaniment melody that are loaded with the singer via the antenna emission by the radio frequency that produces by the oscillator that comprises an inductance.

20. device as claimed in claim 19, wherein said radio frequency modulator will be converted to a radio frequency that is assigned to one of traditional F M channel frequency with the audio input signal that the vocal accompaniment music of resetting is mixed mutually, and then this radiofrequency signal is finely tuned and launch it, so that it can be received by common FM receiver via antenna.

21. device as claimed in claim 16, wherein said radio frequency modulator will be converted to a radio frequency that is assigned to one of traditional F M channel frequency with the audio input signal that the vocal accompaniment music of resetting is mixed mutually, and then this radiofrequency signal is finely tuned and launch it, so that it can be received by common FM receiver via antenna.