CN201408533Y

CN201408533Y - Flexible mellotron

Info

Publication number: CN201408533Y
Application number: CN2009201306678U
Authority: CN
Inventors: 李兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-17
Filing date: 2009-04-17
Publication date: 2010-02-17
Anticipated expiration: 2019-04-17

Abstract

The utility model discloses a flexible mellotron which comprises a keyboard made of flexible material, and a keyboard matrix thin film switch arranged between an upper cover and a lower cover and usedfor receiving key signals. The flexible mellotron further comprises a control box (12) arranged on one side of the keyboard; and a driving circuit for controlling the keyboard matrix thin film switch, a USB interface connected with a computer, an audio frequency input interface and a circumscribed audio output interface or the interface of a loudspeaker are arranged in the control box (12). The flexible mellotron can be connected with the computer, and the computer is used for recording and editing played music; and the utility model allows external equipment to employ the loudspeaker of themellotron.

Description

A kind of flexible electronic qin

Technical field

The utility model relates to musical instrument, relates in particular to a kind of flexible electronic qin.

Background technology

For solving the characteristics that piano and ordinary electronic qin are heavy and can not carry, people use silica gel material to produce folding mellotron.This mellotron has loudspeaker and audio output interface, can fold to put in the packaging bag after curling to carry, and can play after the expansion.But this kind mellotron does not have USB interface, can not connect computer, can't and edit the music of playing with computer record; Absence of audio input interface, external unit can not use the loudspeaker of mellotron to come audio plays.

Summary of the invention

The purpose of this utility model is in order to solve the problems of the technologies described above, to propose a kind of flexible electronic qin with USB interface and audio input interface.

The technical scheme that the utility model proposes is a kind of flexible electronic qin of structure, comprise the keyboard matrix thin film switch that is used to receive the key signal between the keyboard made from flexible material, the loam cake that is arranged on keyboard and the lower cover, be arranged on the control enclosure of described keyboard one side, be provided with the interface of the driving circuit of supervisory keyboard matrix film switch, the USB interface that is connected with computer, audio input interface and external audio frequency output interface or loudspeaker in the described control enclosure.

Described driving circuit can adopt the integrated circuit of band digitizing instrumental interface function.

Described driving circuit can also adopt the single-chip microcomputer of band digitizing instrumental interface software.

Described driving circuit can also can also be powered by external direct current power supply by described USB interface power supply by being arranged on the lithium ion battery power supply in the control enclosure.

Described keyboard adopts silica gel material, and is designed to waterproof construction.

Compared with the prior art, the utility model has USB interface and audio input interface, can be connected with computer, with the melody of computer record and editor's performance; Can also allow external unit to use the loudspeaker of mellotron.Simultaneously the utility model keyboard adopts totally-enclosed full waterproof construction, has that volume is little, in light weight, a dustproof and waterproof, folding portable advantage; In addition, knock the mellotron silent, do not influence other people work or rest.

Description of drawings

Below in conjunction with drawings and Examples, the utility model is described in detail, wherein:

Fig. 1 is the outside drawing of the utility model preferred embodiment;

Fig. 2 is the outside drawing of the utility model preferred embodiment control enclosure;

Fig. 3 is the utility model preferred embodiment usb circuit figure;

Fig. 4 is the utility model preferred embodiment audio input interface circuit diagram;

Fig. 5 is the single-chip microcomputer internal storage unit principle of work synoptic diagram of the utility model preferred embodiment;

Fig. 6 reads theory diagram for the instruction of the utility model preferred embodiment.

Embodiment

The flexible electronic qin of the utility model design comprises: the keyboard matrix thin film switch that is used to receive the key signal between keyboard, the loam cake that is arranged on keyboard and the lower cover made from flexible material, be arranged on the control enclosure 12 of described keyboard one side, be provided with the interface of the driving circuit of supervisory keyboard matrix film switch, the USB interface that is connected with computer, audio input interface and external audio frequency output interface or loudspeaker in the described control enclosure 12.Driving circuit adopts the single-chip microcomputer of band digitizing instrumental interface (MIDI) software.In other embodiments, driving circuit adopts the integrated circuit of band MIDI function.

Fig. 1 is the outside drawing of the utility model preferred embodiment, and keyboard adopts silica gel material, and is designed to waterproof construction.For catering to most people's custom, control enclosure 12 is located at the right side of keyboard.Mellotron has light and thin characteristics, and the thickness is no more than 22mm.

Fig. 2 is the outside drawing of the utility model preferred embodiment control enclosure 12, and as can be seen from the figure control enclosure 12 panels are provided with loudspeaker 1, display screen 2, fader 3, some function keys 4; Control enclosure 12 right plates are provided with power switch 5, USB interface 6,3.5mm audio input interface 7, earphone socket 8,3.5mm audio output interface 9, DC power input interface 10.Loudspeaker 1 is used for audio plays.Display screen 2 is used for showing musical instrument, rhythm and volume.Fader 3 is used for regulating volume.Function key 4 is used for selecting sound sound, rhythm and demonstration melody.Power switch 5 is controlled powering on of circuit of electronic organ or is cut off the power supply.USB interface 6 can directly connect computer.3.5mm audio input interface 7 can allow the external unit of MP3 and so on use the mellotron boombox.Can external earphone by earphone socket 8.3.5mm audio output interface 9 can connect most stereo sets on the market.Control enclosure 12 is equipped with lithium ion battery, can power with lithium ion battery, also can USB interface power, can also select external AC (100-240V) to power through the d-c transformer transformation, than only using alkaline battery to have more economic environmental protection in the prior art, while electric power is durable more.Control enclosure 12 bodies adopt the ABS plastic rubber material to make.

Fig. 3 is the utility model preferred embodiment usb circuit figure, and external direct current power supply can provide electric energy to single-chip microcomputer, and storage unit converts midi interface to the Universal USB interface by the contact of single-chip processor i/o mouth control module.

Fig. 4 is the utility model preferred embodiment audio input interface circuit diagram, its principle of work be input port through R101 R102 R103 input impedance network enter voicefrequency circuit, the back is by the loudspeaker plays music.

Fig. 5 is the single-chip microcomputer internal storage unit principle of work synoptic diagram of the utility model preferred embodiment, and the DC power supply provides electric energy to single-chip microcomputer.Storage unit is by single-chip processor i/o mouth control module contact key, and signal is played in storage.Storage unit is got in touch by single-chip microcomputer MIDI I/O port and USB interface 6 and computer, and single-chip microcomputer has OUT16 output channel (16CHANNEL), observes the MIDI communication standard, and the melody of performance mails to computer by this passage, editing in computer.Storage unit is sent the MIDI data by single-chip microcomputer D/A port, after the circuit conversion of D/A conversion becomes simulating signal by the loudspeaker plays music.128 kinds of sound sound of memory cell, 128 kinds of rhythm and 60 first demonstration melodies.

Fig. 6 reads theory diagram for the instruction of the utility model preferred embodiment, and after the mellotron energized, system begins initialization, and this part comprises: tone color initialization, rhythm initialization and volume initialization.Whether system's detection USB port connects computer after the initialization, generates MIDI equipment automatically if connected the computer single-chip microcomputer, carries out MIDI with computer and communicates by letter.Carry out keyboard scan after detecting USB port, this part comprises to the scanning of white-black key that is key with to the scanning of function key on the control enclosure 12.The player plays signal by knocking the white-black key input, produces note sequence number Midi Out; The player carries out musical instrument setting, rhythm setting, volume setting and recording by function key and is provided with.Carry out display operation to carrying out after the keyboard scan, this part comprises: musical instrument shows, rhythm shows and volume shows.Carry out acoustic processing behind the display operation, system looks into waveform form WaveTable according to note sequence number, current musical instrument and volume and obtains corresponding simulated audio signal, and by loudspeaker sound signal is played back.Get back to the flow process front then again and detect USB port, the operation that goes round and begins again.

Claims

1, a kind of flexible electronic qin, comprise the keyboard matrix thin film switch that is used to receive the key signal between the keyboard made from flexible material, the loam cake that is arranged on keyboard and the lower cover, it is characterized in that: also comprise the control enclosure (12) that is arranged on described keyboard one side, be provided with the interface of the driving circuit of supervisory keyboard matrix film switch, the USB interface that is connected with computer, audio input interface and external audio frequency output interface or loudspeaker in the described control enclosure (12).

2, flexible electronic qin as claimed in claim 1 is characterized in that: described driving circuit adopts the integrated circuit of band digitizing instrumental interface function.

3, flexible electronic qin as claimed in claim 1 is characterized in that: described driving circuit adopts the single-chip microcomputer of band digitizing instrumental interface software.

4, as claim 2 or 3 described flexible electronic qins, it is characterized in that: described driving circuit is powered by the lithium ion battery that is arranged in the control enclosure (12), or by described USB interface power supply, or the external direct current power supply power supply.

5, flexible electronic qin as claimed in claim 1 is characterized in that: described keyboard adopts silica gel material, and is designed to waterproof construction.