CN2231433Y - Electronic musical instrument for micro computer teaching - Google Patents
Electronic musical instrument for micro computer teaching Download PDFInfo
- Publication number
- CN2231433Y CN2231433Y CN 95242835 CN95242835U CN2231433Y CN 2231433 Y CN2231433 Y CN 2231433Y CN 95242835 CN95242835 CN 95242835 CN 95242835 U CN95242835 U CN 95242835U CN 2231433 Y CN2231433 Y CN 2231433Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- input
- output
- connects
- mellotron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Input From Keyboards Or The Like (AREA)
Abstract
The utility model provides a microcomputer electronic organ for teaching, comprising a casing, various controlling panels, signal indicating panels, key indicating lights, a loudspeaker, keys and an electronic organ circuit all arranged on the casing. The electronic organ circuit comprises a signal scanning code circuit, a multiway selecting circuit, a signal scanning decoding circuit, an electronic switching keyboard matrix circuit, an open electrode collecting cushion circuit, a tristate cushion circuit, a signal controlling decoding circuit, a display driving circuit, a tone intensity controlling circuit, an electronic organ monolithic microcomputer system, a key switch keyboard matrix circuit and an 8031 monolithic microcomputer system.
Description
The utility model relates to a kind of amusement appliance, particularly relates to the sub-qin of a kind of micro computer teaching consuming energy.
Present mellotron comprises housing, is arranged on mellotron control panel, loudspeaker, the black and white key on the housing and is arranged on the circuit of electronic organ that is made of mellotron Single Chip Microcomputer (SCM) system and mellotron keyswitch keyboard matrix circuit etc. in the housing.Have demonstration song in the internal memory of performance, functions such as record, melody that the playback player plays be very difficult but the beginner is wanted to import exactly storage one first melody, and this electron-like qin are not led bouncing function.
The purpose of this utility model is to provide a kind of mode typing musical composition exactly that music score can be passed through input beat, musical alphabet and note duration three big key elements, and play, and has the sub-qin of micro computer teaching consuming energy that plays the melody function by key pilot lamp neck.
The sub-qin of the utility model micro computer teaching consuming energy is achieved in that it comprises housing part and circuit partly.Housing partly is made up of housing, the 8031 Single Chip Microcomputer (SCM) system control panels, mellotron control panel, loudspeaker, key pilot lamp, symbol panel and the black and white key that are arranged on the housing.Circuit partly is made of sweep encoding circuit A1, multiplexer circuit A2 and A3, sweep signal decoding scheme A4, mellotron electronic switch keyboard matrix circuit A5, open collector buffer circuit A6, tri-state buffer circuit A7, control signal decoding scheme A8, display driver circuit A9, loudness of a sound control circuit A10, mellotron Single Chip Microcomputer (SCM) system A11, mellotron keyswitch keyboard matrix circuit A12 and 8031 Single Chip Microcomputer (SCM) system A0.Its circuit is connected to, mellotron Single Chip Microcomputer (SCM) system A11 output connects sweep encoding circuit A1 input, A1 output connects the input port of multiplexer circuit A2 and A3 respectively, and the P1 delivery outlet of 8031 Single Chip Microcomputer (SCM) system A0 connects another input port of A2, and the address delivery outlet of A0 connects another input port of A3; The output of multiplexer circuit A2 connects sweep signal decoding scheme A4 input, A4 output connects mellotron keyswitch keyboard matrix circuit A12 input, A12 output connects input of mellotron Single Chip Microcomputer (SCM) system A11 keyboard and tri-state buffer circuit A7 input, and A7 output connects the P0 mouth input of 8031 Single Chip Microcomputer (SCM) system A0; The output of multiplexer circuit A3 connects the address input of mellotron electronic switch keyboard matrix circuit A5, the P0 mouth of 8031 Single Chip Microcomputer (SCM) system A0 connects the data input of A5, the data output of A5 connects the input of open collector buffer circuit A6, and the output of A6 connects the input of mellotron Single Chip Microcomputer (SCM) system A11 keyboard; The P1 delivery outlet of 8031 Single Chip Microcomputer (SCM) system A0 connects control signal decoding scheme A8 input, and A8 output connects loudness of a sound control circuit A10 input; The serial port output of 8031 Single Chip Microcomputer (SCM) system A0 connects the input of display driver circuit A9.
Wherein mellotron Single Chip Microcomputer (SCM) system A11 and mellotron keyswitch keyboard matrix circuit A12 are the known circuit in the existing mellotron; Sweep encoding circuit A1 is made of 4 Sheffer stroke gate U1:A, U1:B, U2 and U3.The input pin of U1:A～B, U2 and U3 meets the output kc that meets A11 respectively, and the output pin of U1:A～B, U2 and U3 connects the input port of multiplexer circuit A2 and A3; Multiplexer circuit A2 is made of data selector U4.The B input port of U4 connects the output pin of U1:A～B, U2 and U3 in the A1 circuit respectively, and the A input port of U4 connects low four outputs of P1 mouth of 8031 Single Chip Microcomputer (SCM) system A0, and the selection control pin of U4 connects the P3 mouth P33 pin of 8031 Single Chip Microcomputer (SCM) system A0.The output of U4 connects the input of sweep signal decoding scheme A4; Multiplexer circuit A3 is made of data selector U5.The A input port of U5 connects the output pin of U1:A～B, U2 and U3 in the A1 circuit, and the B input port of U5 connects the address output line of 8031 Single Chip Microcomputer (SCM) system A0, and the selection control pin of U5 connects the P3 mouth P34 pin of 8031 Single Chip Microcomputer (SCM) system A0.The output of U5 connects the address input of mellotron electronic switch keyboard matrix circuit A5; Sweep signal decoding scheme A4 is made of code translator U6.The input pin of U6 connects the output pin of U4 in the A2 circuit.The output pin of U6 meets the scan input end KS of mellotron keyswitch keyboard matrix circuit A12; Mellotron electronic switch keyboard matrix circuit A5 is made of two static RAM U7 and U8.The address input end of U7 and U8 connects the output pin of U5 among the multiplexer circuit A3 respectively.The data input pin of U7 and U8 connects the P0 mouth output pin of 8031 Single Chip Microcomputer (SCM) system A0 respectively.The data output pin of U7 and U8 connects the input of open collector buffer circuit A6.What the writing of U7 and U8 allowed that end pin WE connects 8031 Single Chip Microcomputer (SCM) system writes control end pin WR; Open collector buffer circuit A6 is made of impact damper U9.The input pin of U9 connects the data output pin of U7 and U8 among the mellotron electronic switch keyboard matrix circuit A5 respectively.The output pin of U9 connects the keyboard input of mellotron Single Chip Microcomputer (SCM) system A11.The control pin of selecting for use of U9 connects the P3 mouth P34 pin of 8031 Single Chip Microcomputer (SCM) system A0; Tri-state buffer circuit A7 is made of impact damper U10 or door U12.The input pin of U10 connects the output of mellotron keyswitch keyboard matrix A12.The output pin of U10 connects the P0 output pin of 8031 Single Chip Microcomputer (SCM) system A0.The output pin of U10 connects the P0 input port of 8031 Single Chip Microcomputer (SCM) system A0.The input pin of U12 connects RD pin and the P32 pin of 8031 Single Chip Microcomputer (SCM) system A0.The output pin of U12 connects gating control 1G, the 2G pin of U10; Control signal decoding scheme A8 is made of code translator U11.The input pin of U11 connects P1 mouth P14-P16 pin of 8031 Single Chip Microcomputer (SCM) system A0.U11 output connects the input of loudness of a sound control circuit A10; Display driver circuit A9 is by buffering driver U13, SI PO shift register U14～U26, light emitting diode D1～D99, and current-limiting resistance R1～R99 constitutes.The input pin difference ground connection of U13 and the serial output pin TXD of 8031 Single Chip Microcomputer (SCM) system A0.The output pin of U13 meets the shift pulse input pin CLK of U14～U26.Data input pin A, the B of U14 meets the serial output pin RXD of 8031 Single Chip Microcomputer (SCM) system A0, and data input pin A, the B of U15～U26 meet the output terminal Q7 of previous stage SI PO shift register.The MR termination power VCC of U14～U26.The power supply input end VOUT of D1～D99 meets the output terminal VOUT of loudness of a sound control circuit A10; Loudness of a sound control circuit A10 is by volume amplifier U27, adjustable voltage-regulating ic device U28, bidirectional analog electronic switch U29 and U30, and resistance constitutes.The input of U27 and output are identical with existing mellotron technology.The input end Vin of U28 meets power supply VIN (Vcc), and output end vo ut meets the power supply input VOUT of light emitting diode D1～D99 of display driver circuit A9.Control input end Y2～Y7 of bidirectional analog electronic switch U29 and U30 meets the output terminal Y2～Y7 of U11 among the control signal decoding scheme A8 respectively, and distinguishes respective signal FF, F, MF, P, MP, OFF.
The principle of work of the sub-qin of the utility model micro computer teaching consuming energy is:
The key scanning signal KCo-11 of mellotron Single Chip Microcomputer (SCM) system A11 output delivers to U1:A～B, U2 among the A1 and the input end of U3, and U1:A～B, U2 and U3 encode input signal, the A input port of U5 among the B input port of U4 and the A3 among output signal A～D to A2; If U4 is just selecting the B input port, U4 output and same signal KA0～3 of B input port signal A～D, this signal is delivered to the input end of U6 among the A4, after U6 is recovered to signal KS0～11 identical with former key scanning signal KC0～11 with input signal decoding, export the scan input end of A12 to, the keyboard input end of keyboard state signal KI1～8 to A11 of A12 output is realized the function that mellotron pronounces; If U5 is just selecting the A input port among the A3, address input end by U5 output signal KB0～3 the same U7 and U8 to the A5 with A input port signal A～D, remove to scan the storage matrix (will work as) of U7 and U8 inside in the electronic switch keyboard matrix, the input end of the data of U7 and U8 output KO1～8 U9 to the A6, if U9 is just selecting conducting, the signal that U9 output is identical with input end, the keyboard state signal logic of this signal and A12 output with after, deliver to the keyboard input port of A11, the function of control mellotron pronunciation when realizing A12 and A5 two companion keyboards.
The B input port of address signal AD0～3 of the address delivery outlet output of 8031 Single Chip Microcomputer (SCM) system A0 U5 to the A3, if U5 is just selecting the B input port, then U5 output and same signal KB0～3 of signal (AD0～3) of delivering to the B input port, this signal is delivered to the address input end of U7 and U8 among the A5, writes the addressing address of electronic switch keyboard state signal in U7 and U8 as 8031 Single Chip Microcomputer (SCM) system A0; The data input port of U7 and U8 in P0 mouth output keyboard state signal D0～7 to A5 of 8031 Single Chip Microcomputer (SCM) system A0, the write control signal WR of 8031 Single Chip Microcomputer (SCM) system A0 delivers to writing of U7 and U8 and allows end WE, under the control of WR signal, the keyboard state signal of U7 and U8 data input pin is write in the byte of address input end signal appointment, realize the function of microcomputerized control electronic switch keyboard.
The key scanning signal P10～P13 of the P1 mouth output of 8031 Single Chip Microcomputer (SCM) system A0 delivers to the A input port of U4 among the A2, if U4 is just selecting the A input port, then U4 exports signal KA0～3 the same with A input port signal, this signal is delivered to the input end of U6 among the A4, being decoded into keyboard scanning signal KS0～13 by U6 exports among the A12, the input end of U10 among the A7 is delivered in keyboard state signal KI1～8 of A12 output, if the positive gating of U10, U10 will export the output signal D0 the same with input end signal～7, deliver to the P0 mouth of 8031 Single Chip Microcomputer (SCM) system A0, judge whether it is that effective button is pressed by 8031 Single Chip Microcomputer (SCM) system A0, if, the information of then carrying out function corresponding or button being represented deposits 8031 Single Chip Microcomputer (SCM) system A0 in, realizes the function of storage input music score.
The demonstration control data RXD of 8031 Single Chip Microcomputer (SCM) system A0 serial ports output, the input end RXD that TXD delivers to U14 among the display driver circuit A9 and the input end TXD of U13, the TXD signal is delivered to the shift pulse input end CLK of U14～U26 after the U13 buffering, driving data RXD is shifted in U14～U26, the light on and off of control light emitting diode D1～D99 demonstrate information or lead the player to practise playing.
The input port of U11 among the circuit A8 is delivered in loudness of a sound control letter P14～16 of the P1 mouth of 8031 Single Chip Microcomputer (SCM) system A0 output, is decoded into loudness of a sound control signal FF, F, MF, P, MP, OFF by U11 and exports among the circuit A10.Control the shutoff and the conducting of 6 bidirectional analog electronic switches of loudness of a sound and intednsity circuit among the A10 simultaneously,, change the key pilot lamp brightness of the volume of mellotron output, realize loudness of a sound (beat) and brilliance control with the different feedback resistance resistance of sampling.
The sub-qin of the utility model micro computer teaching consuming energy has 1) function of input storage music score, and the mode of input is by music notation three big key elements, be that beat, musical alphabet and note duration are imported respectively or musical alphabet and note duration are imported simultaneously, make anyone, comprise that the beginner all can accurately import a first melody.2) have the music score melody function that performance is stored, can on mellotron, will be stored in the melody that has comprised beat, musical alphabet and note duration three elements music score among the 8031 Single Chip Microcomputer (SCM) system A0 and play out exactly.Simultaneously can also practise on electronic organ key, playing a first melody synchronously or instrumental ensembling a first melody with micro computer.Play to revolve and play the effect of learning mellotron and music with the rhythm training user with the music of standard.3) because the utility model is reflected at beat, musical alphabet and note duration on the pilot lamp corresponding with key, i.e. the pairing key of the bright expression of pilot lamp is pressed, the corresponding key of expression that goes out lifts, and the dynamics that button is pressed is then represented in its brightness.Thereby play the effect of playing mellotron and skilled fingering with key pilot lamp training user study.
Describe the utility model embodiment in detail below in conjunction with accompanying drawing.
Fig. 1: the utility model structural representation
Fig. 2: the utility model circuit block diagram
Fig. 3～12: the utility model circuit connection diagram
The sub-qin of the utility model micro computer teaching consuming energy is achieved in that it comprises housing 1, is arranged on housing 1 electronic organ control panel 2, mellotron loudspeaker 3, mellotron black key 4, the white key 5 of mellotron, key pilot lamp 6, symbol panel 7,8031 Single Chip Microcomputer (SCM) system control panel 8 and circuit of electronic organ.Circuit of electronic organ is made up of 8031 Single Chip Microcomputer (SCM) system A0, sweep encoding circuit A2, multiplexer circuit A2 and A3, sweep signal decoding scheme A4, mellotron electronic switch keyboard matrix circuit A5, open collector buffer circuit A6, tri-state buffer circuit A7, control signal decoding scheme A8, display driver circuit A9, loudness of a sound control circuit A10 and mellotron Single Chip Microcomputer (SCM) system A11 and mellotron keyswitch keyboard matrix circuit A12.Wherein (4012:A～B) U2 (4068) U3 (4068) constitutes circuit A1 by Sheffer stroke gate U1:A～B.Circuit A2 is made of data selector U4 (74HC157).Circuit A3 is made of data selector U5 (74HC157).Circuit A4 is made of code translator U6 (74HC154).Circuit A5 is made of static RAM U7 (34710) and U8 (34710).Circuit A6 is made of impact damper U9 (74AS762).Circuit A7 is made of impact damper U10 (74HC244) or door U12 (74HC32).Circuit A8 is made of code translator U11 (74HC238).Circuit A9 is by buffering driver U13 (74LS28), SI PO shift register U14～U26 (74LS164) and light emitting diode D1～D99, and current-limiting resistance R1～D99 constitutes.Circuit A10 is made of volume amplifier U27 adjustable voltage-regulating ic device U28 (317), bidirectional analog electronic switch U29, U30 (4066) and resistance.Its annexation is that the input pin 2～5,9～12 of U1 connects key scanning output KC8～11, KC4～7 of A11 respectively.The input pin 2～5,9～10 of U2 meets the output KC2,3,6,7,10,11 of A11 respectively, and the input pin 2～5,9～10 of U3 meets the output KC1,3,5,6,9,11 of A11 respectively.The output pin 1 of U1:A and the output pin 13 of U1:B, U2 output pin 13, U3 output pin 13 connect the B input port pin 13,10,6 and 3 of U4 among the A2; The A input port pin 2,5,11,14 of U4 connects the P1 mouth output pin 1～4 (P10～13) of A0 respectively.The selection control pin 1 of U4 connects the P3 mouth output pin 13 (P33) of A0.U6 input pin 23～20 among output pin 4,7,9, the 12 connection circuit A4 of U4; Scan input end KS0～KS13 among output pin 1～11,13～15 difference connection circuit A12 of U6; The output pin 13 of U3 among input pin 2,5,11, the 14 difference connection circuit A1 of U5 among the circuit A3, the output pin 1 of the output pin 13 of U2, the output pin 13 of U1:B, U1:A, the B input pin of U5 3,6,10,13 be address output line AD0～AD3 of welding system A0 respectively.The P3 mouth output pin 14 (P34) of the selection control pin 1 welding system A0 of U5.The address input pin 3～6 of U7 and the address input pin 3～6 of U8 among output pin 4,7,9, the 12 connection circuit A5 of U5; The P0 mouth output pin 39～36 of the data input pin 17,15,13 of U7 and 11 difference welding system A0 among the circuit A5 (D0～D3).The P0 mouth output pin 35～32 of data input pin 17,15,13, the 11 difference welding system A0 of U8 (D4～D7).The input pin 2,4,6,8,11,13,15,17 of impact damper U9 among data output pin 16,14,12, the 10 difference connection circuit A6 of U7 and U8.Writing of U7 and U8 allows the P3 mouth of end pin 2 (WE) welding system A0 to write control end pin 16 (WR); The output pin 18,16,14,12,9,7,5,3 of U9 is key input KI1～KI8 of connection circuit A11 respectively, the P3 mouth output pin 14 (P34) of gating control pin 1, the 19 welding system A0 of U9; Among the circuit A7 impact damper U10 input pin 2,4,6,8,11,13,15,17 respectively the output pin 18,16,14,12,9,7,5,3 of U9 among the connection circuit A6 (KI1～KI8), the output pin 18,16,14,12,9,7,5,3 of U10 be the P0 input/output port pin 39～32 of welding system A0 (D0～D7) respectively.Or P3 mouth pin 17 (RD) and the P3 mouth pin 12 (P32) of input pin 1～2 difference welding system A0 of door U12, the output pin 3 of U12 connects the gating control end pin 1,19 (1G, 2G) of U10; (P14～P16), the output pin 7,9,10～13 of U11 (OFF, MP, P, MF, F, FF signal) connects the input of loudness of a sound control circuit A10 to the P1 mouth output pin 5～7 of input pin 1～3 difference welding system A0 of code translator U11 among the circuit A8; The input of U27 among the circuit A10 and output are with existing mellotron, the input pin 1 of U28 connects power Vcc, the power supply input VOUT of light emitting diode D1～D99 of output pin 3 connection circuit A9, the control input end pin Y2 of U29 and U30～Y7 distinguishes pin 13～9 and the pin 7 of U11 among the connection circuit A8, and distinguishes respective signal FF, F, MF, P, MP, OFF; Input pin 3 ground connection of U13 among the circuit A9, input pin 2 meet the serial output pin TXD (pin 11) of 8031 Single Chip Microcomputer (SCM) system A0, and U13 output pin 1 connects the shift pulse input pin 8 of U14～26.The serial output pin RXD (pin 10) of data input pin 1, the 2 welding system A0 of U14.The data input pin AB of U15～U26 connects the output terminal Q7 pin 13 of previous stage.The MR of U14～U26 holds 9 pin to connect power Vcc; The output terminal VOUT of the power supply input end VOUT connection circuit A10 of light emitting diode D1～D99.
Claims (2)
1, the sub-qin of a kind of micro computer teaching consuming energy, comprise housing, be arranged on mellotron control panel, mellotron loudspeaker, mellotron white-black key on the housing, and be arranged on housing interior mellotron Single Chip Microcomputer (SCM) system A11 and mellotron keyswitch keyboard matrix circuit A12, it is characterized in that also being provided with on the housing 8031 Single Chip Microcomputer (SCM) system control panels, key pilot lamp, symbol panel; Also be provided with sweep encoding circuit A1 in the housing, multiplexer circuit A2, A3, sweep signal decoding scheme A4, mellotron electronic switch keyboard matrix circuit A5, open collector buffer circuit A6, tri-state buffer circuit A7, control signal decoding scheme A8, loudness of a sound control circuit A10, display driver circuit A9 and 8031 Single Chip Microcomputer (SCM) system A0, its circuit is connected to, mellotron Single Chip Microcomputer (SCM) system A11 output connects sweep encoding circuit A1 input, A1 output connects the input port of multiplexer circuit A2 and A3 respectively, the P1 output of 8031 Single Chip Microcomputer (SCM) system A0 connects another input port of A2, the address delivery outlet of A0 connects another input port of A3, the output of multiplexer circuit A2 connects sweep signal decoding scheme A4 input, A4 output connects mellotron keyswitch keyboard matrix circuit A12 input, A12 output connects input of mellotron Single Chip Microcomputer (SCM) system A11 keyboard and tri-state buffer circuit A7 input, A7 output connects the P0 mouth input of 8031 Single Chip Microcomputer (SCM) system A0, the output of multiplexer circuit A3 connects the address input of mellotron electronic switch keyboard matrix circuit A5, the P0 mouth of 8031 Single Chip Microcomputer (SCM) system A0 connects the data input of A5, the data output of A5 connects the input of open collector buffer circuit A6, the output of A6 connects the input of mellotron Single Chip Microcomputer (SCM) system A11 keyboard, the P1 output of 8031 Single Chip Microcomputer (SCM) system A0 connects control signal decoding scheme A8 input, A8 output connects the input of loudness of a sound control circuit A10, and the serial port output of 8031 Single Chip Microcomputer (SCM) system A0 connects the input of display driver circuit A9.
2, the sub-qin of micro computer teaching consuming energy as claimed in claim 1 is characterized in that sweep encoding circuit A1 is made of 4 Sheffer stroke gate U1:A, U1:B, U2 and U4; Multiplexer circuit A2 is made of data selector U4; Multiplexer circuit A3 is made of data selector U5; Sweep signal decoding scheme A4 is made of code translator U6; Mellotron electronic switch keyboard matrix A5 is made of two static RAM U7 and U8; Open collector buffer circuit A6 is made of impact damper U9; Tri-state buffer circuit A7 by impact damper U10 and or the door U12 constitute; Control signal decoding scheme A8 is made of code translator U11; Display driver circuit A9 is made of buffering driver U13, SI PO shift register U14～U26, light emitting diode D1～D99 and current-limiting resistance R1～R99; Loudness of a sound control circuit A10 is made of volume amplifier U27, adjustable voltage-regulating ic device U28, bidirectional analog electronic switch U29 and U30, resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242835 CN2231433Y (en) | 1995-03-07 | 1995-03-07 | Electronic musical instrument for micro computer teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242835 CN2231433Y (en) | 1995-03-07 | 1995-03-07 | Electronic musical instrument for micro computer teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2231433Y true CN2231433Y (en) | 1996-07-17 |
Family
ID=33883705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95242835 Expired - Fee Related CN2231433Y (en) | 1995-03-07 | 1995-03-07 | Electronic musical instrument for micro computer teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2231433Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107545806A (en) * | 2016-08-12 | 2018-01-05 | 小叶子（北京）科技有限公司 | A kind of intelligent music tutoring system |
-
1995
- 1995-03-07 CN CN 95242835 patent/CN2231433Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107545806A (en) * | 2016-08-12 | 2018-01-05 | 小叶子（北京）科技有限公司 | A kind of intelligent music tutoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201514710U (en) | Self-learning keyboard music instrument MIDI teaching system | |
| CN102568261A (en) | Auxiliary musical instrument learning machine | |
| CN201994051U (en) | Keyboard-instrument auxiliary device | |
| CN203325261U (en) | Electronic music score | |
| CN202917045U (en) | Piano teaching auxiliary device | |
| CN2231433Y (en) | Electronic musical instrument for micro computer teaching | |
| CN201449666U (en) | Touch-control electronic teaching device | |
| GB2139797A (en) | Bar code recording and reproducing system | |
| CN2149001Y (en) | Musical composition playing prompting equipment | |
| JP2720305B2 (en) | Robot fingering performance device with few keys electronic piano | |
| CN2924681Y (en) | Music electronic demonstrating board | |
| CN205609199U (en) | Piano teaching board | |
| CN2186422Y (en) | Promting instrument for musical composition playing | |
| CN209183048U (en) | A kind of intelligent piano system prompting fingering | |
| CN215895956U (en) | Module unit for realizing different trills according to force | |
| CN2816957Y (en) | Infant voice literacy-learning machine | |
| CN2145426Y (en) | Program-controlled electronic organ | |
| CN1212577C (en) | Method of making karaoke possess sing leading function | |
| CN220913894U (en) | Intelligent musical instrument of simulation bowstring musical instrument class | |
| CN211044643U (en) | Keyboard musical instrument playing prompting learning device | |
| JP3245305U (en) | New sheet music translator | |
| CN202373163U (en) | Bispectrum reading and recognizing device | |
| Lim et al. | An electronic keyboard instrument using PC MIDI and USB interface | |
| CN201570138U (en) | Music electric teaching board | |
| CN201465339U (en) | Assistant teaching instrument for electronic musical instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |