CN2489364Y

CN2489364Y - Electronic metronome

Info

Publication number: CN2489364Y
Application number: CN 01242227
Authority: CN
Inventors: 黄更跃
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-19
Filing date: 2001-06-19
Publication date: 2002-05-01
Anticipated expiration: 2011-06-19

Abstract

The utility model discloses an electronic metronome which comprise a single chip, a lattice LCD displaying screen, a LED displaying circuit, a function switching circuit, a voice storing and enlarging circuit and power circuit, while the LED in the LED displaying circuit is connected into a double matrix circuit and the LED in a matrix is arrayed symmetrically as a herringbone shape with the LED in the other matrix; the symmetrically arrayed LED with the shape of the Chinese character eight is controlled by the single chip and adopts a light display moving method of uniform linear and oblique to imitate double hands time showing manner of the commander, while the controlling array LCD screed imitate various time showing manners of the commander, making music fans can study time more conveniently.

Description

Electronic metronome

The utility model relates to a kind of be used for demonstrating music beat and rhythm, the electronic metronome of being convenient to music-lover's study and grasping.

Most of music learning persons and professional generally need be by metronomes in order to grasp music beat and rhythm, and current now metronome is divided into two kinds of mechanical type and electron types.The metronome of mechanical type is more aging, and it adopts simple single pendulum principle, carries out machinery and simply is regardless of the strong and weak bat of showing, can't adapt to people's learning music of today on function, on the performance, grasps the needs of musical technique; Existing electronic metronome is that simple imitation shows mechanical metronomic demenstration method, imitation gesture, natural way such as foot-operated, has run counter to the basic music theory of music itself.

The purpose of this utility model be to provide a kind of can be according to the basic music theory of music itself, simulation true to nature shows conductor's the multiple bat mode of showing, and can show the electronic metronome of bat with sound synchronously.

For achieving the above object, the utility model comprises single-chip microcomputer, the dot matrix LCD display, the LED display circuit, function selector circuit, voice storage and amplifying circuit and power circuit, the output terminal of power circuit links to each other with the power input of above-mentioned component units, the dot matrix LCD display, the LED display circuit links to each other with each self-corresponding output port on the single-chip microcomputer respectively with the input port of voice storage and amplifying circuit, the output terminal of function selector circuit links to each other with corresponding input end mouth on the single-chip microcomputer, LED in the described LED display circuit connects into the double-matrix circuit, and the LED in matrix becomes " eight " font with the LED symmetric offset spread in another matrix.Becoming the LED of " eight " font to adopt at the uniform velocity straight line and oblique light to manifest mode of motion by the Single-chip Controlling symmetric offset spread comes analog demenstration commander's both hands to show the bat mode; The simulation of control dot matrix LCD screen shows

Conductor's the multiple bat mode of showing.

Function selector circuit described in the utility model is the bond moment circuit that a plurality of function selecting buttons are formed by connecting.

Single-chip microcomputer described in the utility model adopts the KS57P family chip, and its model is KS57P2308.

By Single-chip Controlling, 1/4 in the music beat, 2/4,3/4,4/4, beat such as 5/6 can be used

Canonical form, show at dot matrix LCD screen respectively and illustrate, show that by LCD this shows the bat mode, simple, understand, with low cost; Can carry out the beat demonstration with the simple form that the LED of " eight " font simulation both hands are played bat again, strong beat simultaneously and weak beat are represented with the proportional method of time of this beat of demonstration and length that LED lights light beam; Therefore the simulation that the utility model can be true to nature shows conductor's the multiple bat mode of showing, and can show bat synchronously with sound, and its presentation process meets the form of expression of music, learns beat and rhythm more easily.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is a functional-block diagram of the present utility model;

Fig. 2 is a wherein embodiment circuit diagram of the utility model;

At the uniform velocity straight line and oblique light manifest mode of motion and speed indication synoptic diagram to Fig. 3 for LED;

Fig. 4 is the synoptic diagram of LCD simulation indicating command form.

Extremely shown in Figure 4 by Fig. 1, the utility model comprises single-chip microcomputer, dot matrix LCD display, LED display circuit, function selector circuit, voice storage and amplifying circuit and power circuit, the typical bond moment circuit that function selector circuit is formed by connecting by button K1-K10, the output terminal of bond moment circuit is connected with P7.1-P7.3 with the input port P1.0-P1.3 of single-chip microcomputer IC2, trigger the above-mentioned component units of Single-chip Controlling by these buttons, reach the realization of the utility model repertoire; The output terminal of power circuit links to each other with the power input of single-chip microcomputer, power circuit provides DC6.0V direct supply, be the diode D19 step-down of IN4148 and limit and be sent to single-chip microcomputer IC2 backward through type, single-chip microcomputer adopts the KS57P family chip, the model KS57P2308 of this chip IC 2, single-chip microcomputer IC2 starts working through after the self check, controls dot matrix LCD display, LED display circuit and voice storage and amplifying circuit respectively; Press the start key in the function selector circuit, the output pin P6.2/KS2 of single-chip microcomputer gives low-voltage of triode Q2 base stage, and Q1 is communicated with by triode Q2 control triode, connects the power supply of voice storage and amplifying circuit, by triode Q2 control triode Q1, reach purpose of energy saving; Voice storages and amplifying circuit are that the voice storage chip IC3 of DIP16 and voice power amplifier chip IC 4 that type is LM7368 are formed by type, speech chip stores the voice of standard and the sound source of sound of percussion music such as a pair of hand-held bells played by striking together, wooden fish, output port P2.0-P3.3 control voice storage and the amplifying circuit of single-chip microcomputer IC2 play out multiple music beat sound.

In playing back music, single-chip microcomputer IC2 is by its output port P4.0-P5.3 control LED display circuit, LED in the LED display circuit connects into double-matrix circuit (a LED matrix only is shown among Fig. 2), LED in matrix becomes " eight " font with the LED symmetric offset spread in another matrix, each matrix comprises 16 LED in the present embodiment, and the layout arranged askew of formation " eight " font of order symmetry from top to bottom of pressing D1-D16 is on the both sides of the front center axle of metronome panel; Matrix circuit had both been saved the I/O interface of single-chip microcomputer, had reached the purpose that control LED shows on request again, and its brightness is regulated by the resistance that changes R17-R20.LED at the uniform velocity straight line and oblique light manifests mode of motion and speed indication synoptic diagram (as shown in Figure 3), the figure illustrates LED bright spot direction along with staff shows the custom direction motion of bat, adopt at the uniform velocity straight line and oblique light to manifest mode of motion and come analog representation commander's both hands to show the bat mode; And to become linear uniform motion and music in each is clapped be that rectilinear motion matches in each beat.Because this circuit adopts LED double-matrix display circuit, add that anthropomorphic dummy's both hands of " eight " shape show the bat custom, make no matter be, even both hands show that the learner of bat has a kind of sensation of standard with the left hand or the right hand.Among Fig. 3 " LARGO " ... " PRESTTSSIMO " is the music idiom that shows speed, before metronome carries out the beat demonstration, when the user regulates the speed of beat, variation along with the speed of regulating, LED can light in corresponding place, and LCD also can show the beat number of the per minute of Set For Current specifically, exactly; Strong beat simultaneously and weak beat are represented with the proportional method of time of this beat of demonstration and length that LED lights light beam; Therefore LED shows that speed, the speed of each beat, the power of beat match with the music rhythm of playing all the time.

In order to make the learner more in depth learn to understand the multiple bat mode of showing of music, the utility model has also adopted dot matrix LCD display standard to show the bat mode, promptly

Commander shows the bat mode.Show that by LCD this shows the bat mode, simple, clear, with low cost, reached identical purpose; By single-chip microcomputer IC2 by its output port COM1-COM4, SEG0-SEG22 control dot matrix LCD display displaying contents, can be on the dot matrix LCD display with 1/4 in the music beat, 2/4,3/4,4/4, beat such as 5/6, simulation demonstrates

Conductor's multiple bat mode (shown in Figure 4) and other content shown.

Claims

1, a kind of electronic metronome, comprise single-chip microcomputer, the dot matrix LCD display, the LED display circuit, function selector circuit, voice storage and amplifying circuit and power circuit, the output terminal of power circuit links to each other with the power input of above-mentioned component units, the dot matrix LCD display, the LED display circuit links to each other with each self-corresponding output port on the single-chip microcomputer respectively with the input port of voice storage and amplifying circuit, the output terminal of function selector circuit links to each other with corresponding input end mouth on the single-chip microcomputer, it is characterized in that: the LED in the described LED display circuit connects into the double-matrix circuit, and the LED in matrix becomes " eight " font with the LED symmetric offset spread in another matrix.

2, electronic metronome according to claim 1 is characterized in that: described function selector circuit is the bond moment circuit that a plurality of function selecting buttons are formed by connecting.

3, electronic metronome according to claim 1 is characterized in that: described single-chip microcomputer adopts the KS57P family chip, and its model is KS57P2308.