KR0114216Y1 - Apparatus of portable music accompaniment - Google Patents

Abstract

The present invention relates to a portable wireless accompaniment system, the microprocessor receiving the user's options through the key matrix while storing the accompaniment of the desired song in the expandable non-volatile memory, the display unit while storing the operation state in the memory It outputs accompaniment of the song selected by the user through the sound source control unit at the same time, but with the voice through the user's microphone, there is a receiving device that tunes the frequency through the state of the echo or simply through the antenna according to the user's selection. This is to listen to the speaker of the sound equipment.

Description

Portable music player

1 is a block diagram of a typical karaoke system without conventional lyrics.

2 is a block diagram of an embodiment showing a receiver used in connection with an embodiment of the present invention.

3 is a schematic view of a typical housing of the device according to the present invention showing an external control element.

Figure 4 is a block diagram showing the overall configuration of an embodiment of the present invention.

5 is a schematic diagram of a part for playing back accompaniment of the embodiment of the present invention.

6 is a circuit diagram of a frequency modulator according to an embodiment of the present invention.

7 is a flowchart showing an operation process according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1, 1a: Rom Package 2: Key Matrix

4: microprocessor 6: LCD driver

7: Display panel 11: Dual sound source controller

17: frequency filter 18: tone controller

19: echo generator 20: RF modulator

The present invention allows the user to sing the lyrics of a song according to the accompaniment of the music stored in the device, as well as portable music performance that can transmit the user's song and music to the sound device with a conventional wireless receiver by wireless transmission. Relates to a device.

As is known, a conventional music accompaniment box, commonly called a karaoke system, is configured to mix and play the lyrics of a user singing in a microphone through an electroacoustic system in accordance with the accompaniment of the recorded music.

Typically, karaoke systems include a disc player tape to play music for a song.

The user can reduce the performance of the selected song by mixing his voice with the music accompaniment played through the microphone.

The karaoke system is a device widely known to the general public that can sing along with the accompaniment of the selected music.

Many restaurants, bars, and other entertainment establishments now have special karaoke systems in their homes.

The typical karaoke system used in these entertainment venues is a microphone, a fully stereo system with a powerful amplifier system that can make the synthesized sound complete and powerful, an echo generator to improve the sound quality of the user's voice, and the user's choice and timing of the song. It includes a separate control unit that allows you to control the music tempo and pitch from the microphone and song volume, and from where you stand.

The microphone and control unit send a signal via a wire to a stereo system that plays selected accompaniment music mixed with the user's voice to the appropriate tune through the stereo system.

However, the conventional karaoke system may not be able to select the accompaniment music desired by the user due to the data limit of the tape and disk.

In addition, the conventional karaoke system is integrally configured with a television monitor that allows the user to read the lyrics of the song while playing, and shows the lyrics of the song.

Figure 1 shows a typical known karaoke system that does not have a television monitor displaying lyrics.

This system consists of the central unit 50, the amplifier 51, the speakers 52 and 53, the microphone 55, the controller 57, the music material 59, and the wires 54, 56 and 58.

The microphone 55 and the controller 57 are connected to the central unit 50 by wires 56 and 58, respectively.

The microphone 55 may be a wireless microphone.

The music data 59 is stored separately in the form of a tape or compact disc to be played and placed in the central unit 50, or stored in the central unit 50.

The amplifier 51 outputs a synthesized signal of voice and music accompaniment from the signal generated from the microphone and the central unit, which are fitted to the speakers 52 and 53 by the controller. The speakers 52 and 53 are connected to the amplifier 51 via the wire 54.

The conventional karaoke system has a separate controller, a large central unit and a large speaker that cannot be easily moved and requires multiple wire connections between the components.

When the karaoke system configured as described above is purchased in a general home, the cost is excessively high.

The typical karaoke system also has a large volume that makes it difficult to move the device with a large selection of songs, a stereo system with a powerful amplifier to make the synthesis sound complete and powerful, and a separate controller.

In addition, since most of the power required for the device is supplied through standard output plugs, there are many restrictions on where this karaoke system can be used.

These limitations, along with large power supplies, result in conventional karaoke systems becoming stationary systems that are not suitable for portability.

On the other hand, as the automobile culture develops in recent years, the desired use of the karaoke system is to play the karaoke system inside the moving vehicle.

The necessary parts of a typical karaoke system can be attached to a car stereo system, but it is not easy to move the system from one car to another.

In addition, a microphone or music data storage device may work with one system but not with another.

Thus, a system for reproducing music accompaniment and lyrics cannot easily move between other systems.

Another desirable use of the karaoke system is to play outdoors or on the beach during festivals and picnics.

In this case, however, the size and number of parts required for song selection and powerful voice make such use difficult.

Recently, many households have such a karaoke system.

In this case it is possible to have a main system consisting of separate independent parts of the karaoke system wired together and also to have a second karaoke system consisting of all parts of the system located in one large outer fuselage.

In particular, if there are too many people in the main room, the desired use of the two systems is to allow one song to be enjoyed in another room in the home with a karaoke system.

However, this requires rewiring two or more systems, and typically, different systems do not provide a means of routing through one system to another.

Another desired use of the two systems is to combine the outputs of the systems in one room.

However, even in this case, two or more system wirings have to be redone, and typically, different systems do not provide wiring means for combining the outputs of the two systems.

Thus, the karaoke system overcomes the physical limitations of conventional karaoke systems such as size, output separation requirements and flexibility for the use of two neighboring systems and wherever the user wishes to use them without limitations. It is desirable to be able to carry it for use at home.

It is also desirable that the cost of the desired karaoke system be low enough for consumers to purchase it as a home system.

And as in the Korean Utility Model Publication No. 93-3397 (Wireless Rhythm Microphone), a rhythm sound generator such as a disco is built in the microphone, but the rhythm sound and the mixed sound of the microphone sound only or the rhythm sound generator are described above. While selecting through the switch, the user can listen to the wired or wireless output.

However, in the conventional wireless rhythm microphone as described above, the user can sing a song using a microphone or sing in accord with the rhythm accompaniment, but the sound of the microphone is changed in a state where all sound devices of these days are stereo. Since it is output in monaural, it cannot be used efficiently, and it is not used because the user wants actual accompaniment rather than rhythm as accompaniment sound.

The present invention aims to overcome the above-mentioned shortcomings of the conventional music accompaniment system, that is, the karaoke system, and allows the user's voice and the selected music accompaniment to be mixed and transmitted to an acoustic device and an amplifier system having a wireless receiver. It allows the player to control the song selection, rhythm speed, echo sound effects and performance volume through the controller, and can be easily transported without being restricted to a certain place by size or output limit. It is to provide a portable music player that can be played anywhere.

Another object of the present invention is to provide a portable music player capable of transmitting a user's voice and music accompaniment to a home radio, a car radio, a portable radio or a walkman radio having a powerful amplifier capable of making the synthesized sound complete and powerful.

The present invention combines a music data storage device, a controller and a microphone into a single self-contained portable device. The above-described object of the present invention is largely a storage medium having a music accompaniment for a plurality of songs, and a music accompaniment material. A search apparatus for generating a first signal representing music accompaniment by searching for a microphone, a microphone for generating a second signal corresponding to a voice signal such as a voice of a user singing a song, and a first signal for generating a third signal A self-contained portable music player comprising a processor for mixing signals and a wireless transmitter for transmitting the third signal as an RF signal that can be received by the wireless receiver.

The processor of the device can adjust the tone, rhythm speed, echo sound and volume of the performance.

The device preferably includes a song identifier associated with the music accompaniment material to selectively produce the song the user desires.

The device includes a key matrix that allows the user to select a function.

A preferred embodiment of the apparatus includes a ROM package for storing music accompaniment data capable of storing more than 1,000 songs.

In addition, the preferred embodiment of the device includes a determinant code that allows additional ROM packages to be accessed by the device.

This allows the user to select his accompaniment music from the many choices stored in the multi-rom package, and for the semester so as not to limit the user to the original music stored in the device.

Users can purchase music in their favorite form and even exchange ROM packages with other users for more choices.

The device can be used wherever a typical FM receiver is present in a vehicle, home or outdoors with a large portable radio or a small walkman radio.

The device can take advantage of the strong amplification powers of homes, vehicles, large portable or small Walkman radios and amplifier systems, so the resulting speech is complete and powerful.

The transmission of performances is not limited to being received by one radio, but can be picked up by different FM receivers tuned to the same frequency, so that many people with walkman or car radio that can be carried by an individual enjoy a performance. One performance can be heard through two or more radio and amplifier systems at home or in other locations.

In addition, the amplification power of the two systems can be combined.

The controller of the device gives the player full control over the voice coming from where he stands and greatly improves the quality of the song.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 schematically shows a karaoke system using a device of the present invention in connection.

The device 70 consists of a microphone 71, a controller 72, and a transmitter 73.

Device 70 is used in conjunction with FM receiver 74, which includes a speaker 75 and a speaker 76 for outputting voice of signals generated from karaoke device 70.

The signal 77 is preferably an FM signal generated by the device 70 and transmitted to the FM receiver 74.

The FM receiver 74 may take the form of a portable radio, car stereo radio, home stereo system, or other device that receives an FM signal and plays through one speaker or multiple speakers.

Many common receiver systems will include powerful amplifiers.

FM frequencies are preferred, but can also be transmitted and received for other frequencies.

The shape of the system shown in FIG. 2 allows the karaoke device 70 to be readily available and is not limited by multiple cable or power requirements.

In addition, the FM receiver device 74 may be as small as a portable radio, and the karaoke device 70 is not limited to use with one receiver device.

Thus, the device 70 can be taken from car to car or from home to home, and the system can be used wherever there is an FM receiver.

3 shows a suitable housing of the karaoke device 70 and several controls.

A control panel 80 with a microphone 71, a key matrix 2 and a display panel 7, and an additional control device 81 are shown.

The transmitter 73 is stored in the base of the karaoke apparatus 70.

The cone plate 80 and the additional control device 81 allow the user to select a special accompaniment song to change the acoustic characteristics of the signal as described below.

Figure 4 shows a schematic configuration of the present invention, the apparatus according to the present invention is largely composed of two parts of the accompaniment sound reproduction unit and the frequency modulation unit.

The accompaniment reproducing unit of the device 70 includes a ROM package 1 or an external ROM package 1a, a key matrix 2, a microprocessor 4, a memory 5, a display panel 7, and a multiplexer 8. , The dual sound source controller 11 and the amplifiers 12 and 12a.

The ROM package 1, in which music accompaniment is stored in a digital form while giving an arbitrary number to a song required by the user, can be configured in plural to be expanded as necessary.

The high frequency timing pulses generated from the input signal and the crystal oscillator 3 from the key matrix 2 representing the selection including the song number selected by the user are supplied to the microprocessor 4, and the microprocessor 4 The whole system is controlled by the program stored in the internal memory.

The program causes the music data corresponding to the number of songs to be played to be stored in the memory (Sratic Random Access Memory) 5 and at the same time displays the operation state of the system on the display panel 7 via the LCD driver 6.

In addition, when the user selects a song through the key matrix 2, the microprocessor 4 uses the ROM package 1, 1a via the multiplexer 8, the D flip-flop 9, and the decoder 10. While controlling the retrieval of the music data, the music accompaniment signal reproduced from the dual sound source controller 11 is amplified by the amplifiers 12 and 12a.

The frequency modulator of the device 70 is the external voice input section 13, the frequency modulator section of the device 70 is the external voice input section 13, the internal microphone 15 (corresponding to the microphone 71 in FIG. 3), the voltage amplifier (14, 16), frequency filter 17, tone controller 18, echo generator 19, radio frequency (RF) modulator 20, personal controller 21, noise filter 22, power supply 23 And an antenna 24.

The voice signal from the voice input unit 13, which may be an external microphone, and the voice signal from the built-in internal microphone 15 are supplied to and amplified by the voltage amplifiers 14 and 16, respectively.

The amplified voice signal is then waveform-formed via the frequency filter 17, and the tone value of high or low is selectively adjusted during the tone controller 18.

The voice signal generated from the tone controller 18 is synthesized with the echo signal of the mechanical vibration wave selectively generated from the echo generator 19 and transmitted to the RF modulator 20 to be converted into a radio frequency waveform and output as a frequency modulated waveform. do.

First, the frequency waveform has a conventional frequency modulation (FM) band signal form.

The amplified voice signal improves differential gain and differential phase by the personal controller 21 and passes the personal control signal through the noise filter 22 to remove noise present in the signal. It is further controlled to increase the signal-to-noise ratio (S / N) by decreasing it.

The controlled voice signal and the music accompaniment signal amplified by the amplifiers 12 and 12a are simultaneously input to the EF modulator 20, and the user's voice is received while receiving driving power from the power supply unit 23 supplying operating power therein. The FM modulated output signal in which the signal and the music accompaniment are mixed is wirelessly transmitted to the external acoustic device in which the radio receiver is built in via the antenna 24.

FIG. 5 shows in more detail the accompaniment reproducing unit, which is a main part for reproducing and outputting the accompaniment sound of FIG.

The apparatus comprises a plurality of ROM packages 1, 1 'and an external ROM package 1a additionally coupled to the extension cord 1b for digitally storing various musical accompaniments and their associated song numbers. ) Or both ROM packages.

The ROM package can be stored separately from the karaoke device and optionally connected to the system.

Thus, the user can select the ROM package according to his own musical taste.

The key matrix (2) is composed of 0 to 9 curved tack buttons for selecting the exact number desired by the user, a speed assign button (SW1) for selecting when adjusting the accompaniment speed during performance, and the pitch of the song while playing. Press the pitch setting button (SW2), the speed setting button (SW1) or the pitch setting button (SW2) and then adjust the speed or pitch to an arbitrary value. ), A reset button (SW5) for returning the system to a normal state when a trouble occurs during performance or a mistake in button operation, or a continuous for continuous playback without specifying songs for accompaniment. Rom package assign button (SW7) for selecting one of play button (SW6), multiple ROM packages or external ROM package, to get echo effect in voice when using microphone Coordination button (SW8), Song playback button (SW9) for selecting the start of playback when you want to hear the accompaniment of the tuned song, Song stop for stopping playback to change or reselect the song selection while the song is playing. It consists of a button (SW10) and the power button (SW11) for supplying the power of the built-in battery to the user can input the desired option.

The microprocessor 4 receives the frequency of the signal of the key matrix 2 and the reference signal of the operation cycle output from the crystal oscillator 3 to control the overall operation of the system, and to input and output data during operation. Is stored in the memory 5, and various data signals, clock signals, LCD load signals, etc., are displayed on the display panel 7 in a seven-segment manner through the LCD driver 6.

When the microprocessor 4 selects the desired data from among the multiple data, the D flip-flop 9 inputs information through the multiplexer 8 and the decoder 10 or reads out and outputs the stored information. To latch the output data.

The dual sound source controller 11 of the multiplexer 9 and the decoder 10 outputs the read signal RD, the write signal WR, and the chip select signals YM1 and YM2. The rhythm generating ICs 11a and 11b generate arbitrary rhythm signals according to the accompaniment stored in the ROM package 1, 1 'or the external ROM package 1a using the reference frequency from the oscillator 11C. It is generated in stereo, and is sampled through the D / A converters 11d and 11e, respectively, and output as an analog signal close to the original sound so that the amplifiers 12 and 12a are amplified and outputted while passing through the amplifiers 12 and 12a.

FIG. 6 is a circuit diagram showing the configuration of the frequency modulator of FIG. 4 in more detail. The external voice input unit 13 and the internal microphone 15 for inputting a user's voice, and the voltage amplifier 14 for amplifying the input voice signal, 16), the frequency filter 17 for the waveform shaping of the voice signal, the tone controller 18 for adjusting the tone value of the voice signal, the echo generator 19 for generating the echo sound when the sound to be heard, the voice signal or An RF modulator 20 for modulating the synthesized echo into a radio frequency waveform, a gain controller 21 for controlling the derivative gain of the speech signal, a differential phase gain, and a noise filter 22 for reducing noise present in the speech signal. ), A power supply unit 23 such as a battery for supplying power to the device, and an antenna 24 for transmitting radio frequency signals.

The voice signal from the external microphone connected through the external voice input unit 13 or the voice signal output through the internal microphone 15 is selected and input according to the user's selection, respectively, and the push-pull of the voltage amplifiers 14 and 16 is selected. Frequency modulation is performed by transistors Q1 and Q2.

In addition, when the user presses the echo designation button SW8, the echo generator 19 is discharged from the echo clock generator 19a for a period of time constant values determined by the variable resistor VR1, the capacitor C1, and the resistor R1. According to the generated clock, the echo sound delayed by the bucket bridge device 19b with low noise is output.

The amplified voice signal is integrated in the two transistors Q3 and Q4 of the frequency filter 17 while the tone controller including the transistor Q5, the resistors R2, R3, and the capacitors C2, C3. The integrator of 18), that is, the waveform shaping circuit, is adjusted to an appropriate tone to be supplied to the RF module 20.

On the other hand, the audio signal amplified by the two voltage amplifiers (14), (16) is the resistor (R6), respectively, while the gain width is properly adjusted by the personal controller (21) consisting of split resistors (R4), (R5) , The noise component included in the voice is removed from the noise filter 32 consisting of (R7) and the condenser (C4), (C5) and then supplied to the RF modulator 20.

The echo sound and the voice signal are frequency-converted by the coil L1 and the transistor Q6 of the RF modulator 20, and then fine-tuning the frequency generated by the coil L2 and the transistor Q7. When the modulated output signal is transmitted through the antenna 24, the received signal can be received through an acoustic device equipped with a radio reception political value.

Then, the power supplied from the battery embedded by the power button SW11 is directly supplied to the voltage driving the amplification and conversion unit, and is changed to the operating power supply Vcc while passing through the constant voltage IC 23a of the power supply unit 23, thereby providing a stable voltage. Is supplied.

The portable music player of the present invention configured as described above is used together with an audio device (Audio) in which a wireless receiving device is built, and the operation process of the present invention will be described with reference to the flowchart of FIG. 7.

First, check whether the battery is built in the device of the present invention (step 100), and if not (NO), insert it normally (step 101).

Next, when the power button SW11 of the keymatrix 2 is turned on (step 102) to supply the battery power therein, the microprocessor 4 which receives the operating power Vcc through the power supply unit 23 is input. ), A data signal, a clock signal, and an LCD load signal are output to the LCD driver 6 to display an indication that power is normally supplied to the display panel 7, for example, 1 (step 103).

Next, after turning on the power of the audio device for outputting the accompaniment through the speaker of the sound device with the built-in radio receiver (step 104), the frequency of the sound device is FM frequency band, that is, 88 to 108 MHz. (Step 105), and adjust the volume of the sound equipment to an appropriate level (step 106).

Then, when the user designates the desired song number by using the numeric keys 0 to 9, which are the curve select buttons of the key matrix 2 (step 107), the ROM package 1 is recognized by the microprocessor 4 that recognizes the desired song number. 1 '), (1a) is selected via the multiplexer 8 to read the stored information via the data bus, but only when the user presses the song play button SW9 (step 108). The data is selectively latched through (9) while being read (step 109), and supplied to the rhythm generating ICs 11a and 11b of the dual sound source controller 11 through the multiplexer 8.

At this time, using the frequency output from the oscillator 11c as a reference signal, the stereo rhythms output from the rhythm generator ICs 11a and 11b are sampled by the D / A converters 11d and 11e and output as analog signals. After amplifying and outputting each of the amplifiers 12 and 12a through the RF modulator 20 and the antenna 24, they are output as a radio signal to an external sound device (step 110).

If the user sings an accompaniment song or generates a voice through an external microphone or a built-in microphone connected through an external voice input unit (step 111), the voice signal is synthesized and output as in the accompaniment sound (step 112). ).

At this time, when the user presses the music stop button SW10 (step 113), the accompaniment of the song specified in step 107 is stopped (step 114).

In addition, when changing the pitch of the accompaniment song, press the pitch setting button (SW2) (step 115), and then press the control up / down button (SW3) or (SW4) to increase or decrease the pitch according to the number or time. Can be adjusted (step 116).

In addition, after pressing the speed adjustment button SW1 (step 117), the adjustment speed of the song is controlled to be fast or slow according to the number of times or time of drawing so as to press the adjustment up / down buttons SW3 and SW4 (step 118).

In this case, the microprocessor 4 displays the value of the pitch or the speed on the display panel 7 through the LCD driver 6 while performing the pitch adjusting step 116 or the speed adjusting step 118.

When the user wants to listen to the echo sound, when the echo designation button SW8 is turned on (step 119), the echo sound is supplied to the RF modulator 20 through the bucket bridge element 19b of the echo generator 19. As a result, the echo synthesized signal is transmitted through the antenna 24 to the sound apparatus (step 120).

When the user turns on the ROM package designation button SW7 to select either the ROM package 1 or the external ROM package 1b connected to the extension cord 1b (step 121), the microprocessor ( In 4), the multiplexer 8 selects one of the ROM packages to listen to the stored accompaniment (step 122).

When the continuous playback button SW6 is turned on (step 123), the accompaniment of the songs is sequentially selected and output sequentially in the order stored in the ROM package 1 or the external ROM package 1a (step 124).

The present invention is not limited to the embodiments described above, and various modifications are possible without departing from the scope and spirit of the present invention.

As described above, the portable music player of the present invention is compact and easy to carry, so that the portable music player can be easily used in the home or the outdoor of a vehicle or an acoustic device equipped with a wireless receiver such as FM radio.

In addition, an additional external ROM package can be used to store any additional accompaniment desired by the user, to send out voices or songs together using their own microphones or external microphones, and to send echoes as needed. Can be.

Claims (1)

The ROM package 1 storing the accompaniment of the song as a digital signal, the microprocessor 4 for controlling the overall operation while receiving the user's option through the key matrix 2, and the microprocessor 4 Accompanied sound by the LCD driver 6 which displays the user's option or operation state on the display unit 7 under control, and the sound source stored in the ROM package 1 under the control of the microprocessor 4. The dual sound source controller 11 to output, the amplifier 12 (12a) for amplifying and outputting the accompaniment sound output in stereo from the dual sound source controller 11, the external audio input unit 13 and the internal microphone ( Frequency filter 17 for integrating audio signals input from 15) and frequency modulated by push-pull transistors Q1 and Q2 of voltage amplifiers 14 and 16 at transistors Q3 and Q4. RF module layout A portable music player for transmitting a frequency-converted and modulated signal at 20 to a sound device first, wherein the resistor R2 is provided between the base and the emitter of the transistor Q5 to which the voice signal is input to the collector. Known echo clock generator 19a and bucket bridge element of echo generator 19 to be adjusted to a tone having surrounds via tone controller 18 combining R3 and condenser C2 and C3. 19b outputs an echo sound for a predetermined period by the variable resistor VR1, the capacitor C1, and the resistor R1 while being turned on / off by the echo specifying button SW8, and mixes with the voice signal. The voice signal amplified by the above and two voltage amplifiers 14 and 16 has a known gain controller 21 and is made up of a parallel connection of resistors R6, R7 and capacitors C4 and C5. RF filter after removing the noise contained in the filter 22 Portable music playing device, characterized in that configured to output to the tumulator (20).