KR20100130862A - Educational piano - Google Patents

Abstract

PURPOSE: A piano for a learner is provided to enable a user to easily learn how to play the piano since if a light-emitting keyboard is pressed, a control unit makes the following keyboard emit light. CONSTITUTION: A piano for a learner comprises a plurality of keyboards(11), a plurality of LEDs(20), a control unit(30) and a sensor. The LEDs are connected to each keyboard. The sensor checks whether the keyboard, which has been connected to a light-emitting LED, has been pressed. If yes, the control unit controls the following LED emit light.

Description

Educational piano {Educational piano}

The present invention relates to an educational piano, and more particularly, to an educational piano that can be played while visually confirming which key the player should press.

Pianos are one of the most widespread and are one of the instruments that many learn for hobby or performance. In the case of the conventional piano, the score was played by pressing a key corresponding to each scale while watching the score. Therefore, people who do not read music well, such as piano beginners, young children and mentally disabled people have spent a lot of time learning the piano, there is a problem that loses interest in the piano in this process.

On the other hand, in order to solve the above problems, an educational piano as disclosed in Korean Utility Model Registration No. 20-0424102 has been developed. In the case of the conventional educational piano, by combining the LED lamp with the piano keyboard and lighting the LED lamp in accordance with the score order, the player can play the piano while watching the LED lamp.

However, in the case of the conventional educational piano, the LED lamps are turned on in a preset order and speed, regardless of whether the player actually presses the keyboard. That is, even if the player (beginner) presses a key incorrectly or hesitates in time, the LED lamp is already lit to play the next part. Therefore, beginners have to play the next part while skipping the part, or have to start playing from the beginning again, and as a result, there is a problem that the effect of the piano practice is reduced.

The present invention has been made to solve the above problems, an object of the present invention is to provide an educational piano with an improved structure so that beginners can practice the piano easily and efficiently.

In order to achieve the above object, the educational piano according to the present invention includes a plurality of keys, a plurality of light sources coupled to each of the keys, and a controller for controlling the light sources to emit light in a predetermined order. The educational piano comprising: detecting means for checking whether a key to which the light source in the light-emitting state is coupled is pressed, and wherein the control unit performs the following procedure when a key to which the light source in the light-emitting state is coupled is pressed; It characterized by controlling the light source to emit light.

According to the present invention, the sensing means preferably includes an acoustic sensor unit for checking whether the key is pressed by analyzing the frequency of the sound generated when the key is pressed.

In addition, according to the present invention, the controller measures the time required from the time point at which the light source is emitted until the key to which the light source in the light emitting state is coupled is pressed and compares the measured time with a preset reference time. It is desirable to evaluate the player's playing ability.

According to the present invention of the above configuration, even beginners can complete the performance from beginning to end without skipping the middle of the performance, and as a result the beginners are more interested in playing the piano and the practice efficiency is also improved. .

In addition, since the players can check how accurately they play the beat according to the score, the practice motivation and practice efficiency is improved.

1 is a block diagram of an educational piano according to an embodiment of the present invention, Figure 2 is a flow chart for explaining the operation of the educational piano shown in Figure 1, Figure 3 is the scale of the electronic sound source in the form of an electronic signal This is a flowchart illustrating the process of being converted and stored.

1 to 3, the educational piano 100 according to the present embodiment includes a piano main body 10, a light source 20, a sensing means (not shown), and a controller 30.

A plurality of keys 11 are provided in the piano main body 10, and when each key is pressed, a sound of a specific scale is generated. A space portion is formed inside each key, and an upper surface of the key is made of a material that can transmit light. And the piano main body 10 is provided with the display part (not shown) for displaying a score as mentioned later. On the other hand, the rest of the configuration of the piano body except for the keyboard and the display portion is made of the same or similar configuration as a general piano (that is, a piano generated sound due to string vibration) or an electronic piano.

The light source generates light when power is applied. In the present embodiment, a light emitting diode (hereinafter, referred to as LED) 20 is used as a light source. The LEDs 20 are provided in plural and are arranged one by one in the space part of each keyboard 11. At this time, the LEDs 20 arranged on adjacent keys are arranged to emit light of different colors.

The sensing means is for checking whether a specific key, that is, a key on which the LED 20 is turned on, is pressed. In the present embodiment, the sensing means includes an acoustic sensor unit (not shown). The acoustic sensor unit stores frequency (frequency) data of sound (tone) generated when each key is pressed. The acoustic sensor unit analyzes the frequency of the sound generated when the key 11 is pressed and compares it with the frequency data to determine whether a specific key is pressed.

The controller 30 is to control the light emitting state of the LED 20, and is electrically connected to each of the LEDs 20. The music sheet is stored in the form of an electronic signal in the controller 30, and the controller 30 controls the LEDs 20 coupled to the respective keys 11 to light up in the order of the stored music scores, that is, the musical scales. At this time, the controller 30 receives whether or not the specific key 11 is pressed from the acoustic sensor unit, and controls the LED 20 to emit light after the specific key (key on which the LED is turned on) is pressed. For example, if the score is in the order of degrees, beauty, and soles, the LEDs associated with degrees first light up, and when the player presses degrees, the acoustic sensor recognizes it. It transmits to the control unit, and accordingly, the LED coupled to 'Do' turns off while the LED coupled to 'Mi' turns on.

In addition, the controller 30 measures the time required from the time point at which the LED 20 is emitted to the time point at which the key 11 coupled to the LED is pressed, and compares this time with the reference time to perform the player's performance. Evaluate. Here, the reference time is a time set in consideration of the beat, the speed of the song, and the reaction speed of the player. The reference time is a time indicating how short the corresponding key should be pressed when the song is normally played. If the measured time is within the reference time, the controller 30 determines to be "successful", and if the measured time exceeds the reference time or presses a key of another scale, it determines as "failure". The control unit calculates the ratio of the number of "success" to the total number of songs (i.e., the number of times the key should be pressed) and converts it into a score, and displays the score on the display of the piano body 10. FIG.

On the other hand, the control unit is provided with a digital signal processor (Digtal Signal Process) for extracting the music score of the electronic sound source and converting it into an electronic signal, the conversion process is as follows.

First, as shown in FIG. 3, when the electronic sound source is input to the controller, the decoding module of the digital signal processor decodes the electronic sound source and outputs the waveform in an analog form. For example, when a sound source of an mp3 file is input, an analog waveform is output according to the mp3 decoding algorithm. Then, the frequency analysis module of the digital signal processor converts the output analog waveform to a frequency band output by Fourier transforming. Thereafter, by comparing the converted frequency with the frequencies unique to each scale (system name) previously stored, the scale (system name) of the electronic sound source is analyzed and extracted, and the extracted scale is converted into an electronic signal and stored.

As described above, in the case of the educational piano according to the present embodiment, after the player presses the corresponding key, the player moves to the next playing part. Therefore, even beginners can complete the performance from beginning to end without skipping the middle of the performance as in the prior art, and as a result, beginners become more interested in playing the piano and improve the practice efficiency.

In addition, since the players can check how accurately they play the beat according to the score, the practice motivation and practice efficiency is improved.

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific preferred embodiments described above, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and such changes are within the scope of the claims.

For example, in the present embodiment, it is confirmed whether a specific key is pressed by analyzing a frequency of sound generated when a key is pressed by the acoustic sensor unit, but whether a specific key is pressed by attaching a touch sensor or the like to each key. The invention can be configured to confirm.

In addition, the invention may be configured to be able to change the beat and speed of the song according to the level of the player.

1 is a block diagram of an educational piano according to an embodiment of the present invention.

2 is a flowchart illustrating an operation process of the educational piano shown in FIG. 1.

3 is a flowchart illustrating a process in which a sound scale of an electronic sound source is converted into an electronic signal form and stored.

<Description of the symbols for the main parts of the drawings>

100. Educational piano 10. Piano body

11 ... Key 20 ... LED

30.Control part

Claims (4)

An educational piano comprising a plurality of keys, a plurality of light sources coupled to each of the keys and emitting light, and a control unit configured to control the light sources to emit light in a predetermined order. And detecting means for checking whether a key to which the light source in the light emitting state is coupled is pressed. The controller controls the light source to emit light when the key to which the light source in the light emitting state is coupled is pressed. The method of claim 1, The sensing means, And an acoustic sensor unit for analyzing whether or not the key is pressed by analyzing a frequency of a sound generated when the key is pressed. The method of claim 1, The control unit, Measuring the time taken from the time point at which the light source is emitted until the key to which the light source in the light emitting state is coupled is pressed, and comparing the measured time with a preset reference time to evaluate a player's playing ability. An educational piano characterized by the above. The method of claim 1, The control unit, Educational piano, characterized in that for extracting the scale of the electronic sound source by analyzing the frequency of the input electronic sound source, and converts the scale of the extracted electronic sound source into an electronic signal for storage.

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