CN2229695Y - Learning machine for song creation - Google Patents

Abstract

The utility model relates to a song composing learning machine, which is composed of a central processing chip and each of auxiliary circuits. The utility model is characterized in that a 2*3 scanning keyboard is composed of P< 01 >, < 02 >, < 31 >, < 32 > of the chip, and a P< 33 > port, a P< 00 > port is connected with a power amplifier, P< 20 >, < 21 > ports are connected with the S< 1 > terminal and CK terminal of a shift register, the output terminals of the shift register are respectively connected with each section of a display circuit, and light emitting tubes LED< 1-7 >, LED< 8-15 > of the display circuit, and digitrons are arranged into a numbered musical notation on the position of a panel. The utility model is especially used for the learning and composing of music, and adopts a numbered musical notation, which is direct and simple, and is easy to operate.

Description

A kind of song creation learning machine

The utility model relates to learning machine, more particularly, is a kind of by central processing element, display circuit, and keyboard drive circuit and power amplification circuit constitute, and are used for the song creation learning machine.

As melody study creation machine, also there are not special-purpose technology and product in the prior art.Though the melody that has obtained using in Chinese and English learning machine study creation plate has been finished the function that study composes music, the realization of its function depends on the television receiver display system.In addition, the major defect of this class learning machine is that the display mode of music score is different from the form of numbered musical notation own, and its scale is to be substituted by variant English alphabet, and pitch is distinguished by different sections, and the duration of a sound then is to represent it with the space.This expression way that is different from the numbered musical notation form is brought the inconvenience in the use, and the user must at first grasp this expression way, just can operate the computer.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part, a kind of television receiver display system that do not depend on is proposed, the independent special-purpose song study creation machine that uses, its operation and demonstration conform to the expression-form of numbered musical notation own, and be easy to learn.

The purpose of this utility model is realized by following technical scheme.

The utility model is by central processing element IC ₁, display circuit, keyboard drive circuit and power amplification circuit constitute.

Feature of the present utility model is described chip IC ₁P ₀₁, P ₀₂, P ₃₁, P ₃₂, P ₃₃Mouth is formed 2 * 3 keyboard scans, its P ₀₀Mouth connects power amplification circuit, its P ₂₀, P ₂₁Mouth meets shift register IC respectively ₂S ₁With CK end, shift register IC ₂With output terminal Q _A～H(corresponding ic chip ₂Pin 11,10,3,4,5,13,12,6) connects respectively on a～h section of display circuit.Its feature also is to constitute the luminotron LED of display circuit _1～7, LED _8～15Be arranged into the numbered musical notation form with charactron on positions of panels, in the middle of promptly the scale charactron was positioned at, it is upper and lower pitch luminotron L respectively ₁, L ₂, L ₅, and L ₆, it descends and parts on the right side duration of a sound luminotron L ₃, L ₄, L ₇, L ₈And L ₉

Compared with the prior art, the utlity model has following advantage:

1, the utility model is simple in structure, function is single-minded, does not depend on television receiver, and its unit volume is little, in light weight, is easy to carry.

2, the utility model is easy to operate, and the user instructs through simple, just can expertly use this machine fast.

3, the utility model display mode is simple and clear, for vast melody fan provides good song creation learning ways.

Fig. 1 is the utility model circuit theory diagrams.

Fig. 2 is the utility model panel construction synoptic diagram.

By the following examples, in conjunction with the accompanying drawings the utility model is further described.

Embodiment:

Referring to Fig. 1, with the MICROCOMPUTER PROCESSING chip IC ₁Z86EO4 is as central processing unit, and the control music input of usefulness, demonstration and audio frequency are exported, and produces the very high scale and the stable duration of a sound of time of frequency accuracy.Chip IC ₁P ₂₀P ₂₁P ₃₁P ₃₂And P ₃₃Form 2 * 3 keyboard scans, be used to import music score and operations such as inspection and performance, comprise that scale increases K ₁, scale reduces K ₂, the duration of a sound regulates K ₃, enter key K ₄, reset key K ₅With performance key K ₆Toggle switch K ₇Be serially connected in chip IC ₁P ₂₇Between mouth and the ground, the pitch conversion K switch ₈Be serially connected in chip IC ₁P ₂₆Between mouth and the ground, chip IC ₁P ₀₀Mouth is connected to power amplification circuit.As shown in Figure 1, chip IC ₁P ₂₀And P ₂₁Mouth is connected to shift register IC respectively ₂S ₁With CK end, shift register IC ₂Output terminal QA, QB, QC, QD, QE, QF, QG and QH (the corresponding ic chip of 74LS164 ₂Pin 11,10,3,4,5,13,12,6) is connected to respectively on a, b, c, d, e, f, g, the h section of display circuit.Display circuit is made of luminotron LED1～7, LED8～15 and charactron, adopts altogether that sun connects, and wherein LED1～7 are that one, LED8～15 are one, and charactron also is one, its bit line respectively with triode T ₃, T ₁And T ₂Be connected triode T with collector ₁, T ₂And T ₃Base stage be connected to chip IC respectively ₁P ₂₄, P ₂₃And P ₂₂Mouthful.

Referring to Fig. 2, adopt dynamically to show, driving circuit can make respectively and respectively organize luminotron demonstration in turn.As shown in Figure 2, luminotron LED ₁₀～LED ₁₅(Fig. 1) corresponding to the L on the display panel ₁₀～L ₁₅(Fig. 2) show various tone C, D, F, G, bB and bE respectively; Charactron shows scale, is positioned at panel central authorities; The charactron above and below is arranged pitch luminotron L respectively ₁, L ₂, L ₅And L ₆, corresponding to LED ₁, LED ₂, LED ₅And LED ₆(Fig. 1); Charactron below and the right-hand duration of a sound luminotron L that arranges respectively ₃, L ₄, L ₇, L ₈And L ₉, separately corresponding to LED ₃, LED ₄, LED ₇, LED ₈And LED ₉(Fig. 1), each operating key K ₁, K ₂, K ₃, K ₄, K ₅, K ₆, K ₇, and K ₈Be positioned at the panel bottom.

Use is as follows:

Note input: start, K ₅Reset, machine is in first note state of input of waiting for.Key K ₁Or K ₂Select required scale.As: for scale "

", key K ₁Or K ₂Show " 3 " until charactron, and luminotron L ₂Bright, corresponding to " " sound of scale promptly is stored in the register of central processing unit.Subsequently, key K ₃Determine the duration of a sound of this scale, as this bat " " sound, key K ₃Until luminotron L ₃L ₄Simultaneously bright, be "

", for 2 clap " " sound, luminotron L ₇Bright, be

, same, this moment key K ₄, first note of input is promptly deposited in the machine, and machine just is in second the note state of waiting for subsequently.Operate according to this in whole melody reader.

The inspection of input melody: after the melody end of input, key K ₅, show state transfers first note of melody, key K again to ₁, key K ₂And K ₃Just can make amendment to the scale and the duration of a sound of this note, after modification finishes, key K ₄, transfer to show next note successively, continue to check and revise.

The tone input: after melody input, inspection finish, key K ₈Select required tone.Transfer key K as F ₈Until luminotron L ₁₂Bright, represent that then this song has been confirmed as F and has transferred.

Play: after whole input process finished, machine was in waiting status.At any time key K ₆, under the control of machine intimate program, carry out successively and deposited the instruction that man-machine each interior note accesses, make the sound signal of central processing unit generation corresponding to each note, through power amplification circuit, promote the loudspeaker pronunciation, play out the melody that presets.

Claims (2)

1, a kind of song creation learning machine is by central processing element IC ₁, display circuit, keyboard drive circuit and power amplification circuit constitute, it is characterized in that: described chip IC ₁P ₀₁, P ₀₂, P ₃₁, P ₃₂, P ₃₃Mouth is formed 2 * 3 keyboard scans, its P ₀₀Mouth connects power amplification circuit, its P ₂₀, P ₂₁Mouth meets shift register IC respectively ₂S ₁With Ck end, shift register IC ₂Output terminal Q _A～H(corresponding ic chip ₂Pin 11,10,3,4,5,13,12,6) connects respectively on a～h section of display circuit; Constitute the luminotron LED of display circuit _1～7, LED _8～5Be arranged into the numbered musical notation form with charactron on positions of panels, in the middle of promptly the scale charactron was positioned at, it is upper and lower pitch generator tube L respectively ₁L ₂L ₅L ₆, it descends and parts on the right side duration of a sound luminotron L ₃L ₄L ₇L ₈And L ₉

2, song creation learning machine according to claim 1 is characterized in that: luminotron LED _1～7, LED _8～15Be connected with charactron is positive altogether, wherein charactron is one, LED _1～7Be one, LED8～15 are one, its bit line respectively with triode T ₁, T ₂, T ₃Collector connects, triode T ₁T ₂And T ₃Base stage respectively with chip IC ₁P ₂₄, P ₂₃And P ₂₂Mouth connects.

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