JP3044638U - Portable music playing device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To store a large number of songs, and to enable a player to control music selection and the like from the place where the former is standing. A portable music playing device includes an external audio input such as a singer's voice singing a song lyrics into a microphone, and stored song accompaniment data, preferably RO.
Combine with the data stored in the M package to generate an RF signal and send it to the receiver.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention allows a singer to sing the lyrics of a song in tune with the music stored in the device, and broadcasts the singer's performance and recorded music by wireless transfer to a regular radio receiver. The present invention relates to a handheld music broadcasting device.

[0002]

[Prior art]

 As is well known, modern music accompaniment boxes, so-called karaoke devices, play a song sung by a person into a microphone mixed with a recorded musical accompaniment through an electronic sound system. Karaoke devices typically include a disc player tape for playing music for singing. People can enjoy playing the selected song by mixing their voice through the microphone with the accompaniment of the played music. Karaoke devices are widespread among a large number of people, from young people to old people who want to sing along with the music accompaniment chosen to enhance their performance. Currently, there are a large number of restaurants and bars that have special karaoke nights and charge customers in advance of seating fees or indirectly at the price of drinks or in advance or by looking at other customers who use the karaoke equipment. I do. A typical karaoke device used in bars is a microphone, a full stereo device with a powerful amplifier that produces a rich and powerful mixing sound, an echo generator that improves the sound quality of the user's voice, music selection and its timing, a microphone and Includes a separate controller that allows the singer to control the volume of the music, the tempo and pitch of the music from a location where one can stand and select a number of songs. The microphone and the control unit send the signal through the wire to the stereo device that plays the selected accompaniment music mixed with the user's voice in the appropriate setting by the stereo device. These karaoke machines require a third party, such as a bar bartender, to order a singer's accompaniment music selection from a number of title selection sources due to tape and disk data limitations. Some karaoke devices include a television monitor to display the lyrics of the song so that the singer can read the lyrics while performing. If all the above components are combined in one place, it is possible to equip the home with a Karaoke device. However, purchasing all components is too expensive for personal use. Also, considering all of the music storage for selection of a number of song numbers, a stereo device with a powerful amplifier for producing a rich and powerful mixing sound, and a separate control device, a typical karaoke device is very Bulky. The size of the equipment and the number of components make transport difficult, and depending on power requirements, most components require standard outlets. As a result, the places where the Karaoke device is used are greatly restricted.

[0003] Another use of karaoke equipment is to play in a car the karaoke equipment desired by many young people today to provide the desired music selection and volume. The necessary components of a typical karaoke machine can be mounted on a car stereo. However, it is not easy to transfer the equipment from one car to another. In addition, microphones and music data storage devices work with one device and not the other. Therefore, devices for reproducing music accompaniment and lyrics cannot be easily interchanged between devices.

[0004] Further, another desired use of karaoke is to play karaoke outdoors, such as at a festival, picnic, or on the beach, but with the equipment and the desired music selection and powerful sound. Such use is difficult due to the size of the required components. Some homes have more than one karaoke device. Typically, such a home has a main unit consisting of independent components of separate karaoke units connected to each other. This device is commonly found in living rooms, living rooms, banquet rooms, etc., where home visitors gather. There is also a second karaoke device consisting of all components of the device installed in the karaoke box. Particularly when there are a large number of guests among the guests, the desired use of the two devices is that a single song is enjoyed by visitors in different rooms where the karaoke device is located. However, this requires reconnection of two or more devices, and different devices typically do not provide a means of connection for one performance by one device to be played by another device. Another desired use of two devices is that the power of each device be combined into one room. However, this also requires reconnection of two or more devices and does not provide a connection means for coupling the forces of the two devices. Thus, it overcomes the physical limitations of existing equipment, such as size, power, requirements for separate components, and the use of two adjacent equipment, and allows karaoke equipment to be used anywhere a user can go without restrictions. It is desired for the device to be able to carry the data. The price of the desired device must also not be expensive so that the consumer can reasonably purchase the home device.

[0005]

[Problems to be solved by the invention]

 The present invention is intended to overcome the disadvantages of the conventional music accompaniment device or karaoke device described above. Accordingly, an object of the present invention is to provide a portable music playing device in which human voice and music accompaniment are mixed and transmitted to a shared radio receiver and an amplifying device.

It is another object of the present invention to provide a device in which the generated musical accompaniment and human voice are processed in a stereophonic manner. Still another object of the present invention is to be able to store the sound of a large number of songs, and to control the music selection, rhythm speed, echo sound effect and volume of the performance broadcast from the position where the player is standing. It is an object to provide a device including a control device capable of performing the following.

[0007] Further, the present invention is not limited to a specific place due to size or power restrictions, and can be easily carried by one person, and can be used for home stereo radio receivers, stereo radio receivers and amplifiers, It is an object of the present invention to provide a device that can be played anywhere a usual radio receiver such as a stereo car radio, a portable radio, or a headphone type small radio is located. The present invention further provides a device capable of transmitting human voice and music accompaniment to a home, car, or headphone radio by using a powerful amplifier capable of enriching the mixing sound. It is for this purpose.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the self-contained handheld music performance device according to the present invention searches a storage medium containing data representing music accompaniment for a large number of songs, and accompaniment data of music, and searches for music accompaniment data. A microphone for generating a second signal responsive to an audio input signal, such as the voice of a singer singing the lyrics of a song; and a search device for generating a first signal representing the first signal and the second signal. A processing unit for mixing and enhancing the two signals to generate a third signal which is an RF signal receivable by a radio receiver, the processing unit of the device comprising: The echo sound and volume can be adjusted.

Preferably, the apparatus includes song identification data associated with the accompaniment data for the person to selectively play the desired song. The device contains a key matrix for human selection. A preferred embodiment of the device includes a ROM package for storage of music accompaniment data capable of storing approximately 1200 songs, and an outlet plug that allows access to the device in an additional ROM package. including. This allows the user to select accompaniment music from a large selection of sources stored in multiple ROM packages, and the user is not limited to the music originally stored on the device. Users can also purchase their favorite music types and exchange ROM packages with friends for a larger selection source.

Since the self-contained device is small, it can be easily carried by hand. One can use the device anywhere with a normal FM receiver, and in a car, at home or outdoors, with a large portable radio or a small headphone radio. The resulting sound is rich and powerful because the equipment can utilize the highly amplified power supply of many homes and cars, large portable or small headphone radios, and amplifiers. The device can also provide a selection source for approximately 1200 songs.

[0011] The transmission of a performance can be received not only by one radio but also by different FM receivers tuned to the same frequency, and one performance can be heard through more than one radio or amplifier in the home. And can be enjoyed by many people elsewhere through personal portable headphone and car radios. In addition, the amplification power of the two devices can be combined, and the control of the device allows the player to control the sound generated from where the player is standing, allowing the player to control the song. Improve quality significantly.

[0012]

[Embodiment of the invention]

 FIG. 1 shows a known typical karaoke apparatus. The only difference from conventional karaoke machines is that they do not have a TV monitor to display lyrics. This apparatus comprises a central unit 50, an amplifier 51, speakers 52 and 53, a microphone 55, a controller 57, music data 59, and wires 54, 56, 58. The microphone 55 and the controller 57 are connected to the central unit 50 via wires 56, 58, respectively. However, the microphone may be a wireless microphone. The music data 59 is stored on a tape or a compact disk and put in the central unit 50 for performance, or is stored in the central unit 50. The amplifier 51 outputs a mixed signal of voice and accompaniment to the speakers 52 and 53 from the signal generated from the central unit adjusted according to the microphone and the controller. Speakers 52 and 53 are connected to amplifier 51 via wires 54. Traditional karaoke machines have separate controllers, large central units, and large speakers, but they are not easy to transport and require multiple wire connections between components.

[0013] Due to the above-described restrictions and the need for a large-sized power supply device, the conventional karaoke device is of an installation type that is not very suitable for carrying. In order to solve the above problems, the present invention eliminates the need for a central unit and a sound system by including a music data storage unit, a controller and a microphone in a single self-contained handheld device. In FIG. 2, a schematic diagram of a karaoke apparatus using the apparatus of the present invention is shown. The device 70 includes a microphone unit 71, a controller unit 72, and a transmission unit 73. The device 70 is used with an FM receiver 74 that includes a receiving unit 75 and a speaker unit 76 for outputting an audio output of a signal generated from the karaoke device 70, and the signal 77 is generated by the device 70. Desirably, the signal is an FM signal transmitted to the receiver 74. The FM receiver 74 may be a portable radio, a car stereo radio, a home stereo device, or any device that receives an FM signal and outputs the signal via a single speaker or a plurality of speakers.

Many common receiving devices include powerful amplifiers. Although the FM frequency is preferable, it is also possible to transmit and receive at other frequencies. The arrangement of the apparatus shown in FIG. 2 facilitates the transport of the karaoke apparatus 70 and is not restricted by the need for multiple cables or power supplies. Further, the FM receiver 74 is also small in size like a portable radio, and the karaoke apparatus 70 is not limited to use with one receiver. Therefore, it is possible to transport the device 70 from car to car or from house to house, and use the device where the FM receiver is located.

In FIG. 3, some of the compartments and controls suitable for the karaoke device 70 are shown. Shown are a control panel 80 having a macrophone section 71, a key matrix 2 and a display panel 7, and an additional control 81. The transmitting unit 73 is housed in the base of the karaoke apparatus 70.

The control panel 80 and alternative controls 81 allow the user to select a particular accompaniment and change the acoustic properties of the signal as described below. In FIG. 4, the device 70 comprises two parts: an accompaniment playback device and a frequency modulator. The accompaniment reproducer comprises a ROM package 1, a key matrix 2, a microprocessor 4, a memory 5, a display panel 7, a multiplexer 8, a dual sound source controller 11, and amplifiers 12 and 12a.

Various accompaniments along with corresponding title numbers are stored in the ROM package 1 in the form of digital signals. The package can store approximately 1200 songs. The ROM package 1 is configured so that its capacity can be expanded as necessary. The input from the key matrix indicating the title number selected by the user and the high-frequency timing pulse generated from the X-tal oscillator 3 are supplied to the microprocessor 4, and the microprocessor 4 executes the entire process according to the program stored in the internal memory. Perform system control. The program instructs that music data corresponding to the selected title number be stored in the memory 5 formed by the static random access memory device. Further, the microprocessor 4 controls a search for music data from the ROM package 1 by the multiplexer 8, the D flip-flop 9, and the decoder 10.

Further, the microprocessor 4 displays the function status of the device on the display panel 7 via the LCD driver 6. Further, the microprocessor 4 enables the reproduction signal of the accompaniment of the dual sound source controller 11 to be amplified by the amplifiers 12 and 12a. The frequency modulator section of the device 70 includes an external audio input 13, an internal microphone 15 (corresponding to the microphone 71 in FIG. 3), voltage amplifiers 14, 16, a frequency filter 17, a tone controller 18, an echo generator 19, a radio frequency ( (RF) modulator 20, gain controller 21, noise filter 22, power supply 23, and antenna 24.

An audio input from an external input 13 such as an external microphone or an internal microphone 15 is supplied to voltage amplifiers 14 and 16, respectively. Thereafter, the amplified audio signal is regulated so as to appropriately select a desired waveform through a frequency filter 17 and to select a “high” or “low” level through a tone controller 18. The audio signal generated by the tone controller 18 is mixed with an echo signal selectively generated by an echo generator 19, and the mixed audio signal is supplied to an RF modulator 20, which converts the mixed signal into a radio signal. Convert to frequency waveform. Radio frequency waveforms are in the traditional frequency modulation (FM) band signal format. The amplified audio signal is further controlled to increase its differential gain and differential phase by a gain controller 21 and subsequently pass the gain controlled signal through a noise filter 22 to reduce noise appearing in the signal. Increases the S / N ratio. Then, the reduced noise signal is sent to the modulator 20 and is combined with the audio signal.

The controlled audio input signal from the amplifiers 12 and 12a and the reproduced accompaniment signal are sent to the RF modulator 20 at the same time, and the FM-modulated output signal carrying the human voice and accompaniment is output from the antenna. 24 to a general FM receiver. In FIG. 5, a more detailed view of the accompaniment reproducer of FIG. 4 is shown. The ROM package 1 for digitally storing title numbers corresponding to various accompaniments has one additional ROM package 1a connected to an extension plug 1b into which additional ROM packages can be inserted. By using an external plug-in ROM package in addition to the internal ROM package, the device can access the desired number of accompaniments in addition to the internal ROM package.

[0021] The ROM package can be stored separately from the karaoke apparatus, and can be selectively connected to the apparatus. Therefore, the user can select a ROM package according to his / her preference. The key matrix 2 includes numeric keys 0 to 9 for selecting a song title number, a rhythm speed controller key SW1, a performance interval controller key SW2 for changing a music tone, and keys SW1 and SW2 for playing music. It has adjustment up / down keys SW3 and SW4 for adjusting the rhythm speed and playing tone to desired numerical values when activated.

The key matrix 2 includes a reset button SW5 for resetting the apparatus to a normal or initial state when an operator encounters a trouble during operation or makes a wrong key selection, and a selection of a song title. Key for continuously playing the accompaniment music stored in the ROM package without further execution of the ROM package. When the extendable ROM package is connected to the extension plug 1b, any of the ROM packages is used. ROM package selection key SW7 for selecting or, echo button SW8 for obtaining an echo effect of voice input from a microphone, start or play button SW9 for playing the selected accompaniment music, and for changing the title of selection. Accompaniment Stop button SW10 to interrupt music, power supply like internal battery And a power switch SW11 for supplying power to the apparatus by enabling the power supply 23 to be supplied with power.

The input from the key matrix 2 and the timing pulse generated by the X-tal oscillator 3 are supplied to a microprocessor 4, and the microprocessor 4 executes overall system control according to a program routine described below. The microprocessor 4 stores data corresponding to the selected accompaniment in the memory 5. At the same time, the microprocessor 4 selectively supplies a continuous data output signal, a clock signal, and an LCD load signal to the LCD driver 6 via the internal data bus 50, and displays the function status on the display panel 7 in a 7-segment display. indicate.

When the microprocessor 4 selects a specific data item such as an accompaniment via the internal data bus 90 from the data stored in the ROM package 1 or the ROM package 1a, the selected data item is selected. Data is written to or read from the memory 5 via the multiplexer 8 and the decoder 10. During this time, the output data is latched by the D flip-flop.

The chip select signals YM 1 and YM 2 from the decoder 10 and the output signals as the read signal RD 3 and the write signal WR 4 from the multiplexer 8 are supplied to the dual tone generator controller 11 via the internal data bus 90. The dual sound source controller 11 includes two melody integrated circuits (ICs) 11a and 11b, an oscillator 11c, and two digital / analog (D / A) converters 11d and 11e.

While responding to this, the melody integrated circuits 11a and 11b generate a rhythm signal in stereo based on the music data retrieved from the ROM package 1 or 1a. The output signals of the melody integrated circuits 11a and 11b are sampled via the D / A converters 11a and 11e, respectively, to obtain analog signals corresponding to the original accompaniment. The outputs from the D / A converters 11d, 11e are amplified via amplifiers 12, 12a as required by the radio frequency modulator 20.

Referring to FIG. 6, a detailed circuit diagram of the frequency modulator section of the device 70 is shown. The audio input from external input 13 provided by an external or internal microphone 15 is provided to voltage amplifiers 14, 16 including transistors Q1, Q2, respectively, to obtain the appropriate input level. Each amplified audio input signal is filtered by two transistors Q3, Q4 of a frequency filter 17 and formed in a suitable manner through a tone controller 18 including a transistor Q5, resistors R2, R3, and capacitors C2, C3. Is done.

An audio input signal selectively formed in response to a “high” or “low” level tone is provided to an RF modulator 20, which receives an output signal from an echo generator 19. The generator 19 is of conventional design, includes a clock 19a and a bucket bridge device (BBD) 19b, and has a delayed low noise output for a time constant determined by a variable register VR1, a capacitor C1, and a register R1. Generate an echo sound.

The echo sound is generated only when the echo button SW8 of the key matrix 2 is actuated. The amplified audio input signal from the voltage amplifier 14 or 16 is controlled to increase the differential gain and phase via a gain controller 21 consisting of divider registers R4 and R5. Next, the S / N ratio of the signal is increased by removing noise components through a noise filter 22 consisting of a combination of a register and capacitors R6, C4, R7, C5 shown in FIG. The processed audio signal is mixed with the echo sound selectively generated by the echo generator 19, and the controlled audio input signal from the amplifiers 12 and 12a and the reproduced accompaniment signal are simultaneously supplied to the RF modulator 20. Is done. RF modulator 20 converts the audio input signal to a radio frequency set to be in the conventional FM band by IFT coil L1 and transistor Q6. Then, the radio frequency signal is tuned by the RF coil 20 by the reactor coil L2 and the transistor Q7. Finally, the FM modulated output signal carrying the human voice and accompaniment is transmitted via antenna 24 and received by the FM receiver tuned to the output frequency of the device.

In the present embodiment, the power supply voltage from the internal battery (for example, 9 V) is directly applied to the audio amplifier and the RF modulator, and the operation voltage (Vcc) of 5 V activates the power switch SW 11 of the key matrix 2. Sometimes it is supplied to the rest of the circuit by the voltage regulator IC of the power supply 23. Referring to FIG. 7, there is shown a flowchart illustrating the program instructions performed by the microprocessor of FIG. 4 to perform the control functions in accordance with the present invention. In step 100, it is determined whether a suitable power supply, a 9V battery in the embodiment, is included. If the required power supply is not available, charging or replacement with a suitable power supply is required in step 101. If the power switch SW11 is detected to be "ON" in step 102, the microprocessor 4 supplies the LCD driver 6 with the data signal LCD DATA, the clock signal LCD CLK, and the load signal LCD LDP in step 103. Then, "1" is displayed on the display panel 7 to indicate a normal operation voltage Vcc supplied from the power supply 23.

Using a microphone / RF signal generator requires additional steps. These steps include a step 104 for activating the remote FM receiver and the amplifier, a step 105 for adjusting the frequency to a predetermined frequency (for example, 98.1 ± MHz or 100 ± 1 MHz), and a step for adjusting the volume level of the amplifier. Adjusting 106 appropriately. When a numeric key input from the key matrix 2 for setting a desired song title is received at step 107, either the ROM package 1 or 1a is selected by the multiplexer 8 according to the state of the SW 7, and the corresponding ROM package 1 or 1a is selected. The recorded data is retrieved by the data bus 90. It is determined in step 108 whether or not the play button SW9 is operated, and when the play button is turned on, the stored music data is read by selectively latching it via the D-flip-flop 9 in step 109. Will be issued.

The retrieved digital data from the ROM package 1 or 1a is supplied to the melody ICs 11a and 11b of the dual sound source controller via the multiplexer 8. The melody ICs 11a and 11b generate an output of a stereo rhythm supplied to each of the D / A converters 11d and 11e in which data is sampled based on an output from the oscillator 11c and converted into an analog signal. The analog output is supplied to amplifiers 12a and 12b, and the amplified analog accompaniment signal is supplied to RF modulator 20 in step 110, converted into an FM radio frequency signal, and transmitted via antenna 24.

In the following step 111, it is determined whether a signal is present in the audio input from the external or internal microphone. If the user wishes to sing along with the accompaniment retrieved from the memory of the present invention, the audio input signal is mixed with the accompaniment signal in step 112. When the stop button SW10 of the key matrix 2 is operated during the above operation, the performance of the accompaniment selected in step 114 is stopped. If it is desired to change the accompaniment tone in step 115, actuation of the performance interval control key SW2 will adjust the tune tone to a desired level during the music performance. The control adjustment up / down keys SW3 and SW4 are operated in step 116 to select an appropriate level.

When the rhythm speed control key SW1 is operated in step 117, the rhythm speed is increased or decreased by operating the adjustment up / down keys SW3 and SW4 and pressing each key as many times as required in step 118. I do. In the course of the performance interval and rhythm speed control process, the microprocessor 4 executes a display process for indicating an adjustment value via the display panel 7.

In step 119, if it is found that the echo button SW 8 has been operated to obtain an echo effect of the audio input from the microphone, in step 120, the echo sound signal generated by the echo generator 19 is converted to an RF sound signal. It is applied to a durator 20 and mixed with the unmodulated signal. In step 121, when the ROM package selection key SW7 is operated to supply the expandable ROM package 1a, in step 122, the desired expandable ROM package is selected by the multiplexer 8, and the selection of the desired accompaniment is permitted. It is. Each ROM package consists of some type of music, such as country or pop, a collection of favorite songs, or songs of a particular artist. There are various variations in the contents of the ROM package.

When the continuous play key SW 6 is operated in step 123, the accompaniment stored in the ROM package 1 or 1 a is continuously played in step 124 without selecting a song title. The device 70 according to the present invention can selectively process the audio input signal including the voice and the retrieved accompaniment, supply a mixed signal, and transmit the mixed signal in the stereo FM channel. With the configuration of a self-contained karaoke device used with a general FM receiver, if the FM receiver is present, it can be carried indoors, outdoors, or in a moving car to play. The user can even sing to the music using a small portable radio to receive the transmitted signal while walking outdoors. FIG. 8 is a circuit diagram of a second embodiment of the frequency modulator section of FIG. 8 includes an echo generator 30, a tone controller 31, a gain controller 33, a noise filter 34, an RF modulator 35, and an antenna 36. The echo generator 30 is connected to the resistors R11 and R12 and the capacitors C11 and C12, generates an echo sound signal delayed by a time constant determined by the values of R11, R12, C11 and C12, and generates a push-pull transistor Q11. It includes a bucket bridge device 30a for amplifying the echo sound signal by Q12.

An echo sound output is supplied to the tone controller 31 to control the amplification factor of the transistor Q13 by adjusting the variable register VR11 and mix the sound with the audio input from the stereo microphone input terminals 32 and 32a. The echo sound output signal is controlled by the transistor Q14 according to the audio input level.

The audio input signal mixed with the echo sound, when selected, is constituted by a filter comprising a resistor R13, a capacitor C13, a volume adjustment variable resistor VR2, and resistors R14, R15 and capacitors C14, C15. Is supplied to a gain controller 33 including an operational amplifier OP1 having a feedback loop. The input signal processed and amplified by the operational amplifier OP1 maintains an appropriate volume level by adjusting the variable register VR2. Then, the audio input signal is divided into the stereo audio signals MIC-L and MIC-R by the filter.

The stereo audio signals MIC-L and MIC-R are mixed with the reproduced accompaniment signals IN-L and IN-R, respectively, and pass through registers R16 and R17 and capacitors C16 and C17. This mixed signal is fully amplified by the audio amplifier IC 34a, converted by the RF modulator 35, and tuned by the radio frequency generated by the oscillator consisting of the inductor L11 and the transistor Q15.

In this way, the modulated output signal carrying the human voice and the accompaniment melody can be transmitted via the antenna 36 and can be received by a general FM receiver within the range of the transmission. it can. In this embodiment, the power supply voltage from the internal power supply, which is a 9V battery, is sent directly to the audio amplifier and the RF modulator, and when the power switch SW11 of the key matrix 2 is operated, the power supply voltage controller (not shown) controls the power supply to 5V. The voltage (Vcc) is supplied to other parts of the circuit.

The above merely illustrates the principle of the present invention. Accordingly, it would be desirable for a person skilled in the art to be able to embody the principles of the present invention and devise a number of devices and methods within the scope and spirit of the present invention, although not shown in the present invention. For example, if the device according to the present invention is manufactured using an IC device corresponding to each functional unit, the device will be more compact. As a result, the device can be easily transported, and the user can carry it by hand.

[Brief description of the drawings]

FIG. 1 is a block diagram of a typical karaoke device without lyrics display as known in the prior art;

FIG. 2 is a block diagram showing an embodiment according to the present invention and a receiver used in the embodiment but not a component of the present invention;

FIG. 3 shows an exemplary housing of the device according to the invention and also shows external control elements;

FIG. 4 is a block diagram of an embodiment;

FIG. 5 is a schematic diagram showing an audio reproducing unit according to the embodiment;

FIG. 6 is a circuit diagram showing a frequency modulator according to the embodiment;

FIG. 7 is a flowchart showing computer program instructions executed by the microprocessor of FIG. 4 to perform the control functions of the embodiment;

FIG. 8 is a circuit diagram showing a second embodiment of a frequency modulator useful in the device according to the present invention.

[Explanation of symbols]

 Reference numeral 70: device 71: microphone 72: control unit 73: transmitting unit 74: FM transmitter 75: receiving unit 76: speaker unit

Claims (21)

[Utility model registration claims] 1. A storage means containing data representing accompaniment of a number of songs, a retrieval means for retrieving accompaniment data and generating a first signal representing accompaniment, and a second signal responsive to an audio input signal. Microphone means for generating, processing means for mixing the first signal and the second signal to generate a third signal, and the third signal may be received by a radio receiver. Means for transmitting as an RF signal. 2. The storage means further includes song identification data associated with the accompaniment data of each song, and the portable music playing device accesses the selected song by further selecting appropriate identification data. The apparatus of claim 1 including control means operated by a person. 3. The apparatus according to claim 2, wherein said control means includes a key matrix for inputting song identification data and adjusting acoustic characteristics of said audio input signal. 4. The apparatus according to claim 1, wherein said accompaniment data is stored in digital storage means. 5. The apparatus according to claim 4, wherein said storage means comprises a ROM package. 6. The apparatus according to claim 5, wherein said ROM package includes an output plug for receiving another ROM package. 7. The apparatus according to claim 1, wherein said search means includes a microprocessor for performing a predetermined control operation. 8. The apparatus according to claim 1, wherein said processing means further includes a tone controller. 9. The apparatus according to claim 1, wherein said processing means includes a dual sound source controller for adjusting a rhythm speed of an accompaniment. 10. The apparatus according to claim 1, wherein said processing means further includes an echo generator. 11. The apparatus according to claim 1, wherein said processing means further includes a gain controller. 12. The apparatus according to claim 1, wherein the processing device further includes a noise filter. 13. The apparatus according to claim 1, wherein said transmitting means includes an RF modulator for converting said third signal into a modulated radio frequency signal, and an antenna for transmitting said radio frequency signal. The described device. 14. The storage means is a ROM package having an accompaniment and an associated title number stored in the means; the search means selects a title number of a desired song; Includes a key matrix for supplying control signals for adjusting characteristics,
Further, when there is an input from the key matrix, a predetermined control operation is performed according to a program routine stored in the internal memory of the microprocessor, and music data stored in the internal memory is selected through a multiplexer and a decoder. The portable music playing device further comprises a display panel for displaying a functional status of the system through an LCD driver. 15. The processing device further comprises: 2 melody I
A dual sound source controller for generating a stereophonic rhythm signal based on music data retrieved from the ROM package latched by a D flip-flop through C; to an external microphone or from an internal microphone; A voltage amplifier for amplifying an audio input from a connected external input terminal; a tone controller for shaping a waveform of the amplified audio signal; a delayed low-noise output echo with respect to the amplified audio input signal An echo generator for selectively generating sound; a gain controller for increasing a differential gain and a differential phase of an audio input from the voltage amplifier; and an output of the gain controller by removing a noise component included in an output signal. Signal to noise ratio 15. The apparatus of claim 14, including a noise filter for enhancing the signal. 16. The transmitting means for transmitting, via an antenna, an audio input signal mixed with an echo sound selectively generated by the echo generator and an accompaniment signal reproduced from a dual sound source controller. RF for converting to a modulated radio frequency signal
The device of claim 15, comprising a modulator. 17. The apparatus of claim 16, wherein said ROM package has an output plug for inserting another ROM package. 18. A key matrix comprising: a number key from 0 to 9 for selecting a desired song title; a rhythm speed control key; a music interval control key; a tone to a rhythm speed and a desired value during music performance. A height adjustment key for adjusting; a switching button for restoring the system to a normal or initial state in the event of an operational failure or negligence in key selection; the ROM package without selecting a song title A continuous performance key for continuously playing the accompaniment music stored in the ROM; a ROM package designation key for selecting one of the different ROM packages;
An echo button for obtaining the echo effect of the audio input from the microphone; a start or play button for playing the selected accompaniment; a stop button for stopping the playing of the accompaniment; and a power source from the internal battery to the system. The apparatus of claim 17, further comprising a power switch for refilling. 19. A frequency modulator comprising: an echo generator having a bucket bridge device for generating an echo sound signal and amplifying the echo sound signal through a push-pull transistor; and adjusting a variable resistance of the echo generator. A tone controller for controlling the amplification factor of the echo sound signal and mixing the voice input from the input terminal of the stereophonic microphone; operating the amplifier by adjusting the variable resistor for voltage adjustment and the variable resistor. A filter consisting of a resistor and a capacitor for maintaining said amplified input signal at an appropriate voltage level through an operational amplifier and for dividing said voice input signal into a stereoacoustic audio signal through said filter. The gain controller having; And for mixing the stereoacoustic audio signal with the input of a playback accompaniment signal passed through a noise filter comprising a resistor and a capacitor, for fine tuning obtained by a radio frequency generated from an oscillator comprising an inductor, and 17. The apparatus according to claim 16, comprising said RF modulator for emitting a modulated output signal carrying a human voice and a melody accompaniment through an antenna. 20. The RF modulator converts the audio input signal mixed with the played accompaniment to a radio frequency designated as one of the frequencies of a normal FM channel, wherein the radio frequency signal is subtle. And transmitted from the antenna, the normal F
The apparatus of claim 19, wherein the apparatus is received by an M receiver. 21. The RF modulator converts the audio input signal mixed with the played accompaniment to the radio frequency designated as one of the frequencies of a normal FM channel, wherein the radio frequency is subtly adjusted. 17. The apparatus of claim 16, wherein the apparatus is tuned and transmitted through an antenna to be received by a conventional FM receiver.