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:
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.