KR200354895Y1 - Digital piano having metronome function - Google Patents

Abstract

The present invention discloses a digital piano having a metronome function in which a metronome function is realized by adding a metronome program to an operation program of a digital piano and equipped with a metronome selection button without using a metronome device. A digital piano comprising: a storage unit for storing at least one or more sound sources generated by a PCM method; A tempo setting unit configured to output one tempo selection signal selected according to a user's operation among a plurality of tempos; A sound source selection unit for selecting a sound source to be generated as the metronome sound in response to a user's operation; A metronome volume control unit for outputting an output level setting signal of one metronome sound source selected according to a user's operation; A control unit which reads the selected sound source from the storage unit and outputs the selected sound source at a tempo set according to the tempo selection signal, and controls the volume to be determined by the metronome volume control unit according to an output level setting signal of the sound source; A sound processing unit suitable for converting the sound source data selected as the metronome sound source and the sound source data matched with the keyboard key switch and outputted according to the control of the controller; An amplifier for amplifying the signal output from the sound processor; And a speaker for outputting the signal amplified by the amplifier.

Description

DIGITAL PIANO HAVING METRONOME FUNCTION}

The present invention relates to a digital piano having a metronome function.

More specifically, a digital piano with a metronome function that adds a metronome program to an operation program of a digital piano without a metronome device and provides a metronome selection button so that the metronome function is realized using a sound source possessed by the digital piano. It is about.

1 is a block diagram illustrating a metronome device of a digital piano according to the related art.

Accompanying drawings The digital piano to which the metronome device and the conventional design shown in FIGS. 1 and 2 are applied is a design filed in 1990 (No. 1996-0013609), and its configuration and operation are as follows.

First, as shown in FIG. 1, the metronome apparatus selects a tempo adjusting volume 11 for adjusting a tempo and a timer 12 and a metronome for setting a predetermined period according to the output of the tempo adjusting volume 11. A microprocessor 20 for receiving a signal from the metronome switch 13, a metronome switch 13, and outputting a metronome control signal of a predetermined period according to the timer 12; and a metronome of the microprocessor 20. A shift register 31 for shifting a control signal, a 7-segment 32 for displaying an output signal of the shift register 31, and a metronome control signal of a predetermined period output from the microprocessor 20; It consists of a metronome generator 40 for generating a metronome sound in a cycle.

The metronome generator 40 includes an oscillator 42 for generating an oscillation signal of a predetermined frequency, a high pass filter 41 for differentiating the metronome control signal output from the microprocessor 20, and the high pass filter ( An analog switch 43 for passing the oscillation signal of the oscillator 42 under the control of the output signal of 41 and a transistor TR 트랜지스터 for inverting and amplifying the oscillation signal through the analog switch 43 and outputting it to the speaker SP. ).

The inverters I₁ and I2 of the oscillation unit 42 are supplied with power to their power terminals, so that oscillation occurs, and the oscillation frequencies of the oscillation unit 42 are resistors R₃, R₄ and capacitor C2. The oscillation frequency is set to 3 ?? 4KHz, which is not rejected by humans.

In the description of the drawings, reference numeral 10 denotes a key input and a tempo input unit, and 30 denotes a tempo display unit.

When described in detail with reference to the waveform of Figure 3 the effect of the present invention configured as described above.

When the power supply V is applied and the select switch signal of the metronome switch 13 is input to the microprocessor 20, the microprocessor 20 performs a metronome control signal of a predetermined period in accordance with the period set in the timer 12. Will print At this time, the predetermined period of the metronome control signal is determined by the cycle time set in the timer 12 by adjusting the tempo adjustment volume 11. As such, the metronome control signal output from the microprocessor 20 is shift-stored in the shift register 31, and the output signal of the shift register 31 is applied to the 7-segment 32, so that the tempo control volume 11 The tempo cycle according to the adjustment is displayed.

Meanwhile, the metronome control signal output from the microprocessor 20 is differentiated from the capacitor C 콘덴서 and the resistor R₁ of the high pass filter 41 to the control signal of the analog switch 43 through the resistor R2. Is approved. Here, the analog switch 43 is turned on while the high potential signal is applied to its control terminal, and is cut off while the low potential signal is applied. Therefore, the analog switch 43 is in the conduction state only for a predetermined time when the high pass filter 41 outputs the high potential differential pulse signal, so that the oscillation signal of the oscillator 42 passes through the analog switch 43. That is, at this time, when the oscillation signal of the predetermined frequency is output from the oscillator 42, the oscillation signal is passed through the analog switch 43 for a predetermined time when the analog switch 43 is in the above conduction state, and then the transistor TR '. Since it is inverted and amplified, an oscillation signal is output through its collector, and this oscillation signal is output as a beep through the speaker SP. As a result, the beep sound is output from the speaker SP at a predetermined period according to the adjustment of the tempo adjustment volume 11.

2 is a block diagram of a digital piano to which the prior art is applied, and as shown therein, a clock generator 21 for generating a clock, a key switch 22 for generating a keyboard key signal, and program contents are stored. A microprocessor 20 for receiving a key ROM signal of the ROM 23 and the key switch 22, and outputting a sound source generation control signal according to the program contents of the ROM 23; and this microprocessor 20 A sound source integrated circuit 24 for generating a sound source in accordance with the sound source generation control signal of the < RTI ID = 0.0 >), < / RTI > A digital piano comprising a low pass filter 26 for shaping the output signal of (25) and outputting it to a speaker SP ', wherein the key input and tempo input unit 10, the tempo display unit 30, and the metronome as described above are provided. Occur The unit 40 is configured by connecting to the microprocessor 20.

Therefore, when the clock signal generated by the clock generator 21 is applied to the microprocessor 20, and the key of the key switch 22 is pressed and the key key signal is applied to the microprocessor 20, the key key signal Is output as a sound source generation control signal according to the program contents of the ROM 23, and after the sound source is generated in the sound source integrated circuit 24 according to the sound source generation control signal, it is converted into an analog signal by the digital / analog converter 25. The low pass filter 26 is shaped and output to the speaker SP '.

On the other hand, when the metronome selection switch signal is input to the microprocessor 20 from the key input and tempo input unit 10 as described above, the microprocessor 20 performs a tempo period of the key input and tempo input unit 10. The metronome control signal according to the signal is output, and the tempo is displayed on the tempo display unit 30 by the metronome control signal, and the beep sound according to the period of the metronome control signal is generated and output from the metronome generating unit 40.

However, the metronome device of the digital piano is a device separate from the digital piano and is connected to each other so that interaction can be made. Therefore, the metronome device must be located in a place close to the digital piano or inside the digital piano. There may be a problem.

In addition, the conventional digital piano metronome device is not only monotonous by simply generating a beep sound according to the tempo when the metronome function is selected, but also has a problem in that the output level of the beep sound cannot be adjusted.

The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to add a metronome program to the operation program of the digital piano without having a separate metronome device and equipped with a metronome selection button digital piano is It is to provide a digital piano having a metronome function that allows the metronome function to be realized by using a sound source that has it.

1 is a block diagram illustrating a metronome device of a digital piano according to the prior art;

FIG. 2 is a block diagram illustrating a configuration of a digital piano to which FIG. 1 is applied.

3 is a block diagram illustrating a digital piano having a metronome function according to the present invention.

*** Explanation of main parts of drawing ***

100: storage unit 120: sound source selection unit

110: control unit 130: keyswitch

140: sound processing unit

150: amplifier 170: tempo setting unit

180: metronome volume control unit 190: tempo display unit

One embodiment of the present invention for achieving the above object, in a conventional digital piano,

A storage unit for storing various sound sources generated by the PCM method for keyboard sounds;

A metronome sound source selection unit for selecting a sound source to be generated as the metronome sound in response to a user's operation;

A tempo setting unit for outputting one tempo selection signal selected according to a user's operation among a plurality of tempo of several beats;

A metronome volume control unit for outputting an output level setting signal of one metronome sound source selected according to a user's operation;

According to the operation of the sound source selection unit, a sound source to be used as a metronome sound source among sound sources stored in the storage unit is read from the storage unit and output at a tempo set according to the tempo selection signal, and the output level of the sound source is set by the metronome volume control unit. A control unit for controlling the volume to be determined according to the signal;

A sound processor configured to process the sound source data selected as the metronome sound source and the sound source data matched with the keyboard key switch and convert the sound source data into analog sound according to the control of the controller;

An amplifier for amplifying the signal output from the sound processor; And

And a speaker for outputting a keyboard sound or a keyboard sound / metronome signal amplified by the amplifier.

In this case, the tempo setting unit may be configured in the following two ways.

First, the tempo setting unit is provided separately from the metronome sound source selection unit, and selects one of a plurality of tempos of 2/4, 3/4, 4/4, 6/8 beats according to the operation of the tempo setting unit to select a metronome sound source. It is configured to output the selected one metronome tempo signal.

Second, the tempo setting unit is provided in parallel with the metronome sound source selection unit so that whenever the user operates the metronome sound source selection unit, the metronome on 2/4 beat, metronome on 3/4 beat, metronome on 4/4 beat, metronome It is selected in order of 6/8 beats, metronome off, and configured to output the selected metronome tempo signal.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

3 is a block diagram illustrating a digital piano having a metronome function according to the present invention.

As shown in FIG. 3, the digital piano includes a storage unit 100 for storing at least one or more sound sources generated by the PCM method, a key switch 130 for outputting a key key signal in response to a user's operation, The tempo setting unit 170 outputs a tempo selection signal selected according to a user's operation among a plurality of tempos, and as a playing sound and / or a metronome sound output when the key switch 130 is pressed in response to a user's operation. A sound source selector 120 for selecting a sound source to be generated, a metronome volume controller 180 for outputting an output level setting signal of one metronome sound source selected according to a user's operation, and the selected sound source; 100), the sound source is output at a tempo set according to the tempo selection signal, and the sound source is output at an output level determined by the metronome volume control unit 180. And a control unit 110 for controlling the entire system so that the sound source selected by the user is output at the corresponding pitch level in response to the key signal of the key switch 130, and selected as the metronome sound source under the control of the control unit 110. A sound processor 140 suitable for converting the sound source data matched with the sound source data and the keyboard key switch for sound processing; an amplification unit 150 for amplifying the signal output from the sound processor 140; The speaker 10 is configured to output a signal amplified by the unit 150.

In this case, the tempo setting unit 170 selectively outputs one signal of on, 2/4, 3/4, 4/4, 6/8, and off according to a user's selection. In other words, press once to turn on, press twice to select 2/4 time, press three times to select the next menu each time you press, and so on, you can choose to turn off the metronome at the end. .

On the other hand, the user may select the playing mode of the digital piano using the sound source selection unit 120, the control unit 110 supports the digital piano to be played with the sound source selected through the sound source selection unit 120.

That is, when the user selects a mode and selects a sound source through the sound source selection unit 120, the control unit 110 causes the sound source to be generated as an output signal of the keyboard key switch, and after the tempo is set by the tempo setting unit 170. When a sound source is selected through the sound source selection unit 120, the entire system is controlled to generate a metronome sound to the selected sound source.

In addition, the metronome volume control unit 180 may be an encoder switch or a switch having the same function as the tempo setting unit 170.

Referring to the operation of the digital piano having a metronome function configured as described above are as follows.

First, when power is supplied by the user, the controller 110 initializes the entire system to operate in a play mode for playing. Then, when the user selects a predetermined playing mode through the sound source selection unit 120 and presses the key of the key switch 130, the key switch 130 outputs the corresponding key key switch signal to the controller 110.

The controller 110 receives a key switch signal, reads sound source data stored in a predetermined region of the storage unit 100, outputs the sound source signal to the sound processor 140, and the sound source signal processed by the sound processor 140 is an amplification unit. After being amplified through the 150, it is output to the speaker 10. In this case, when the mode is not selected by the user, the controller 110 operates by applying the piano playing mode output as a unique piano sound. In this case, the sound source data corresponding to the keyboard key switch signal is not directly input to the sound processor 140, but is temporarily stored in a RAM not shown in the drawing, and is sequentially input to the sound processor 140.

On the other hand, the user selects the function on the tempo setting unit 170 to activate the metronome operation, and then press the tempo setting unit 170 repeatedly 1/4, 2/4, 3/4, 4/4, 6 / 8 beat, select one of the desired tempo and select the sound source to be generated as a metronome sound through the sound source selection unit 120, the controller 110 to display the selected tempo through the tempo display 190 To be recognized.

The controller 110 generates the metronome sound source through the speaker 10 in accordance with the tempo set by the tempo setting unit 170. The controller 110 is generated by the PCM method through the sound processor 140 and the amplification unit 150. The sound source data is read from the storage unit 100, the sound source is processed, converted into an analog signal, amplified by a predetermined level, and then output through the speaker 10.

In this case, the controller 110 controls the entire system such that the sound source generated by the key switch 130 and the sound source output for performing the metronome function are simultaneously output through the sound processor 140.

In addition, the user may adjust the output level of the metronome sound source output to the speaker 10 using the metronome volume control unit 180 to adjust the metronome sound source to be larger or smaller.

On the other hand, the present invention is composed of a metronome sound source selection unit provided with a selection button 120, the sound source selection unit 120, the metronome on (on) 2/4 time, metronome on 3/4, metronome on 4/4, metronome on 6/8 beats, metronome off, tempo control and on / off are switched to output the metronome sound extracted from the storage to the speakers.

Accordingly, the present invention is to provide a metronome extraction program to the operation program of the digital piano without the metronome device separately, and equipped with a metronome selection button to use the sound source that the digital piano has a metronome function Instead of separately providing an amplifier and a sound processor for processing, the entire circuit of a digital piano having a metronome function can be simply configured by using an amplifier and a sound processor provided for processing piano keys. It is effective to reduce the cost.

In addition, the present invention not only allows the metronome sound to be generated by selecting one of various sound sources stored in the digital piano in accordance with the tempo set when the metronome function is selected, but also sets the output level of the metronome sound to a desired size. It is effective to make it output.

The present invention is not limited to the above embodiments, and it is apparent that many modifications are possible by those skilled in the art within the technical idea of the present invention.

Claims (3)

In a typical digital piano, A storage unit for storing various sound sources generated by the PCM method for keyboard sounds; A metronome sound source selection unit for selecting a sound source to be generated as the metronome sound in response to a user's operation; A tempo setting unit for outputting one tempo selection signal selected according to a user's operation among a plurality of tempo of several beats; A metronome volume control unit for outputting an output level setting signal of one metronome sound source selected according to a user's operation; According to the operation of the sound source selection unit, a sound source to be used as a metronome sound source among sound sources stored in the storage unit is read from the storage unit and output at a tempo set according to the tempo selection signal, and the output level of the sound source is set by the metronome volume control unit. A control unit for controlling the volume to be determined according to the signal; A sound processor configured to process the sound source data selected as the metronome sound source and the sound source data matched with the keyboard key switch and convert the sound source data into analog sound according to the control of the controller; An amplifier for amplifying the signal output from the sound processor; And A speaker for outputting a keyboard sound or a keyboard sound / metronome signal amplified by the amplifier; Digital piano with a metronome function, including. 2. The apparatus of claim 1, wherein the tempo setting unit is provided separately from the metronome sound source selecting unit so that one of a plurality of tempos of 2/4, 3/4, 4/4, 6/8 beats is selected according to the operation of the tempo setting unit. And output as one metronome tempo signal selected from the control unit. The method of claim 1, wherein the tempo setting unit is provided in parallel with the metronome sound source selection unit, and each time the user operates the metronome sound source selection unit operated by the user, metronome on 2/4 time, metronome on 3/4 time, metronome A digital piano having a metronome function, which is selected in the order of 4/4 beat, metronome 6/8 beat, and metronome off, and is output as one metronome tempo signal selected from the controller.