CN1555045A - Passive electric string musical instrument - Google Patents
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- CN1555045A CN1555045A CNA2003101234427A CN200310123442A CN1555045A CN 1555045 A CN1555045 A CN 1555045A CN A2003101234427 A CNA2003101234427 A CN A2003101234427A CN 200310123442 A CN200310123442 A CN 200310123442A CN 1555045 A CN1555045 A CN 1555045A
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Abstract
The passive electric string music instrument consists of two parts of music instrument and passive circuit. It has piezoelectric string vibration sensor, impedance matcher, timbre converter, earphone, piezoelectric ceramic chip, resonant cavity, damping rubber cushion and shielded wires. The piezoelectric string vibration sensor picks up the vibration of the string to produce audio current, i. e., converts the vibration of the string into corresponding audio current to drive the earphone directly without needing amplifier and power source. Owing to the impedance matching and timbre conversion functions, the earphone is driven to send satisfactory timbre. The music instrument is also provided with muting function to prevent the interference to neighbor. The string music instrument may be used in silent performance, monitoring, interactive communication, etc.
Description
Technical field: do not need to the present invention relates to power supply power supply and a kind of passive electrical stringed musical instrument that can the conversion tone color.
Background technology: national stringed instrument, as urheen, matouqin, Chinese fiddle etc., the West bowed stringed instrument, as violin, viola, violoncello, shellfish violin, pull out stringed musical instrument, as wooden guitar etc., utilization is drawn when playing and is rubbed between the bow and string, or pull out string string is vibrated, utilize qin chamber resonance phenomenon, send the musical sound of soft grace.When practicing qin, unpleasant to hear sound can be sent,, also environmental noise can be produced when being not suitable for the occasion performance waiting in the dead of night even practice to certain degree as the beginner.Particularly as the musical instrument music teaching, the sound of generation not only disturbs the teaching in contiguous classroom, and disturbs the resolving ability of piano practicer to pitch.Therefore, need a kind of quiet electroacoustic stringed musical instrument, promptly draw when playing, the sound of musical instrument that mechanical vibration produce is very weak, can hear loud performance sound of musical instrument with earphone.
Chinese patent notification number ZL00212889.6 name is called " multi-functional electroacoustic urheen ", this application case discloses the qin bar and has been provided with the movable very heavy assembly that is used for seven grades of modified tones, multi-functional electroacoustic urheen is characterized in that electroacoustic equipment adopts pairing sound circuit, one the tunnel is traditional tone color, and another road adds effect device.Defective that exists in the prior art and deficiency, be that the electroacoustic urheen utilizes sensor to change vibrations of strings into electric signal, its faint electric signal is not enough to directly drive the earphone sounding, also need amplifying circuit and power amplifier, electroacoustic urheen cost is increased, not as traditional urheen carries, convenient maintenance.In addition, amplifying circuit and power amplifier all need power supply power supply, particularly use AC power that the performance place is restricted, and have lost traditional urheen and have been easy to carry and play characteristics easily, and the beginner is difficult to grasp and uses.Also there are some unsafe factors, when particularly children use, the danger that electric shock takes place arranged; When using battery, need consumed power during performance, change battery and make troubles, waste battery also pollutes the environment.In addition, the cost of multi-functional electroacoustic urheen is unfavorable for that middle and primary schools' musical instrument music teaching and home entertaining use, and also are difficult to popularize.Up to the present, on market, yet there are no the electroacoustic stringed musical instrument that just can utilize the earphone playback without the power supply power supply.
Summary of the invention: the objective of the invention is to improve that prior art does not have quiet electroacoustic stringed musical instrument and active urheen is dangerous, the shortcoming of consumed power, provide and utilize piezoelectric type string vibration transducer, the mechanical vibration of string are converted into tone currents, directly drive the earphone sounding, become a kind of power supply that do not need and power, and have a kind of passive electrical stringed musical instrument of mute function.Technical matters to be solved by this invention is that the electroacoustic stringed musical instrument does not need the power supply power supply, that is to say to cancel required amplifying circuit and the power amplifier of electroacoustic stringed musical instrument, thereby has just saved the power supply powerup issue yet.Have problems thereupon and be: must increase sensor and change vibrations of strings the intensity of electric signal into, so that there are enough electric power directly to drive the earphone sounding.For this reason, the present invention utilizes output voltage can reach the piezoelectric type string vibration transducer of 300mV, the mechanical vibration of string are converted into tone currents, improve electric energy transmitting efficient by impedance matching box, and, improved the intensity of resonance current by the LC shunt-resonant circuit in the tamber transformation circuit, make earphone obtain the 20mW electric power, drive earphone and send loud sound, become a kind of power supply that do not need and power, and have the passive electrical stringed musical instrument of conversion tone color and mute function.For achieving the above object, the present invention takes following design proposal:
The present invention is made up of qin body and passive electric circuit two parts.The passive electric circuit part is made up of piezoelectric type string vibration transducer, impedance matching box, circuit output.Piezoelectric type string vibration transducer is made up of piezoelectric ceramic piece, resonator cavity, damping rubber cushion and shielded lead.Impedance matching box adopts the audio-frequency transformer (AFT) that has the primary and secondary winding.Piezoelectric ceramic piece is fixed on the resonator cavity, resonator cavity is bonded on the damping rubber cushion, make it directly not contact with the qin chamber, the damping rubber cushion is bonded on the dividing plate of qin chamber internal fixation, and the piezoelectric type string vibration transducer of impedance matching audio-frequency transformer (AFT) and connection is drawn shielding wire and is connected lead.
Piezoelectric type string vibration transducer of the present invention is installed on the inboard partition of qin chamber, is fixed on an end of close qin sign indicating number in the qin chamber.Described piezoelectric type string vibration transducer picks up vibrations of strings, utilizes the piezoelectric effect of piezoelectric ceramic piece to produce tone currents; It not only is converted to vibrations of strings corresponding tone currents, and produces and can directly drive the required electric energy of earphone sounding, thereby no longer needs amplifier and electric supply installation, is the topmost feature of the present invention place.
The audio-frequency transformer (AFT) that the impedance matching box utilization has primary and secondary coil winding carries out impedance conversion, and the primary coil two ends of audio-frequency transformer (AFT) link to each other with piezoelectric ceramic piece, and the secondary coil of audio-frequency transformer (AFT) links to each other with the earphone two ends.Because piezoelectric ceramic piece impedance 10k Ω when it utilizes piezoelectric effect as the tone currents source, presents high impedance, that is to say internal resistance of source height, and earphone is Low ESR 32 Ω, if piezoelectric ceramic piece is directly in parallel with earphone, impedance does not match, and makes that electric energy transmitting efficient is low.That is to say that the electric energy of piezoelectric ceramic piece output is most of to be consumed on the high impedance that is presented in piezoelectric ceramic piece inside, the resulting electric energy of earphone reduces, and can not produce enough playback volumes.The present invention utilizes audio-frequency transformer (AFT) to realize impedance matching, can make low-impedance earphone obtain the electric current of enough driving earphone sounding from the piezoelectric ceramic piece power generating device of high impedance, therefore no longer need extra amplifier and the required electric supply installation of amplifier, become a kind of passive electrical stringed musical instrument that does not need power supply, this is another feature of the present invention.In addition, the passive electrical stringed musical instrument can without power supply, have characteristics easy to use as the traditional strings musical instrument.
The present invention increases the tamber transformation device in circuit, the tamber transformation device is made up of audio-frequency transformer (AFT) primary coil, tamber transformation switch and capacitor, utilizes the tamber transformation switch to select different capacitors to select tone color.The tamber transformation device utilizes as the capacitor of the primary coil of the audio-frequency transformer (AFT) of impedance matching box and tamber transformation forms the shunt-resonant circuit, has tone color bandpass filtering function.Utilize the tamber transformation switch to connect capacitor respectively, because the capacitor value difference, tone color bandpass filtering effect is also different, can produce tone color deepness with distinct contrast, mellow and full and bright tone color respectively.The tamber transformation device utilizes impedance matching box coil and capacitor parallel connection, have impedance matching and tamber transformation function concurrently, particularly the LC resonant tank produces parallel resonance, the circuit of this impedance and tamber transformation unification has increased the intensity of output current, promoting the earphone sounding and can obtain satisfied volume, is one of feature of the present invention.The present invention has simplified circuit because impedance matching and tone color varying circuit are integrated, has reduced cost.
When passive electrical stringed musical instrument of the present invention utilizes the earphone playback, both can satisfy player's monitoring, externally not sound again, have mute function.In addition, described receiver J-Horner also can be used as the line signal delivery outlet, is input to sound amplifier, has sound amplification function.
Why this passive electrical stringed musical instrument is without the power supply power supply, and its reason has following three aspects:
1. piezoelectric type string vibration transducer adopts mechanical energy-electric energy energy transducer piezoelectric ceramic piece highly sensitive, good linearity, picks up the tone currents of the mechanical vibration output 300mV of string, has created inherent condition for directly driving the earphone sounding.Piezoelectric ceramic piece is fixed on the resonator cavity of injection moulding, can make its free vibration, can not weaken the tone currents of piezoelectric type string vibration transducer output.
2. adopt the impedance matching audio-frequency transformer (AFT), carry out impedance matching, the current source piezoelectric ceramic piece output as high internal impedance is complementary with low-impedance earphone load, improve the tone currents transfer efficiency, make earphone obtain the 20mW electric power, produce satisfied volume.
3. by impedance matching audio-frequency transformer (AFT) primary coil and capacitor C
1～C
3Deng forming bandpass filtering tamber transformation circuit, owing to its parallel resonance characteristic, can improve the amplitude of resonance current, also be to make earphone obtain one of reason of satisfied volume.
In addition, circuit design is succinct, and some components and parts are public, and adopts the little dacron terylene condenser of dielectric loss, so that reduce the tone currents output loss.
The advantage that the present invention has:
1. passive electrical stringed musical instrument employing output voltage under common playing strength can reach the piezoelectric type string vibration transducer of 300mV, utilize impedance matching box to improve electric energy transmitting efficient, and the shunt-resonant circuit by tamber transformation, improve the intensity of resonance current, make earphone obtain the 20mW electric power, drive earphone and send clear and legible sound, become a kind of passive electrical stringed musical instrument that does not need the power supply power supply.
2. the passive electrical stringed musical instrument does not have amplifying circuit and amplifier, without power supply power supply, has simple in structurely, and cost is low, is convenient to make, and portably uses, easy to maintenance, helps the universal of primary school and middle school Music teaching and national musical instruments.
3. the passive electrical stringed musical instrument has mute function, sounds hardly during exercise, avoids the mutual interference of practitioner's phase or bothers the neighbour, is applicable to that music audio-visual classroom musical instrument teaching, home entertaining use, and also can be used for the specialty performance and uses.
4. the passive electrical stringed musical instrument has the tamber transformation function, can select required bright, mellow and full and dull tone color according to player's hobby or melody performance needs, can also produce the effect that simulates stereo.
5. the passive electrical stringed musical instrument does not use AC power or battery, safety and environmental protection.
6. piezoelectric type string vibration transducer, impedance matching box, tamber transformation device technology can be used for the urheen kind bowed instrument in the passive electrical stringed musical instrument, be used on high Hu, middle Hu, Da Hu and the low Hu, the West bowed stringed instrument, as violin, viola, violoncello, shellfish violin, pull out stringed musical instrument, as wooden guitar etc., dial (hitting) stringed musical instrument, as liuqin, yu-kin, children's Chinese lute, adult's Chinese lute, Ruan, trichord, seven-stringed plucked instrument in some ways similar to the zither (zither), dulcimer etc.
7. the passive electrical stringed musical instrument utilizes line signal output can carry out noiseless performance electric signal transmission, and teacher monitors, interaction, recording and playback, is particularly suitable for the primary school and middle school Music audio-visual classroom and uses.
Description of drawings:
Fig. 1 is a structural representation of the present invention
Fig. 2 is a structural representation of the present invention
Fig. 3 is circuit theory diagrams
Fig. 4 is circuit theory diagrams
Among the figure: damping rubber pad 1 piezoelectric ceramic piece 2 bridges 3 resonators 4 qin holders 5 pegs 6 very heavy 7 strings, 8 qin bars, 9 bows 10 qin chambeies 11 tamber transformation switching knobs, 12 additional receiver J-Horner head 13 additional earphone 14 piezoelectric type string vibrating sensors are drawn shielding wire 15 qin chamber coverings 16 string fixed screws 17 dividing plates 18 circuit boards 19 circuit board fixed screws 20 capacitors 21 impedance matching audio-frequency transformers 22 tamber transformation switches 23 receiver J-Horner seats 24 qin chambeies flower window dividing plate 25 and are connected wire 26 qin chambeies decoration cylinder 27
Embodiment:
Embodiment 1: the present invention is made up of qin body and passive electric circuit two parts.The qin body is urheen or high Hu, middle Hu, Da Hu, hangs down Hu, violin, viola, violoncello, shellfish violin, wooden guitar, liuqin, yu-kin, Chinese lute, Ruan, trichord, seven-stringed plucked instrument in some ways similar to the zither (zither), dulcimer organ body etc.The passive electric circuit part is made up of piezoelectric type string vibration transducer BZ, impedance matching box, circuit output.Piezoelectric type string vibration transducer BZ is made up of piezoelectric ceramic piece 2, resonator cavity 4, damping rubber cushion 1 and shielded lead.Impedance matching box adopts the audio-frequency transformer (AFT) B that has the primary and secondary winding.Piezoelectric ceramic piece 2 is fixed on the resonator cavity 4, resonator cavity 4 is bonded on the damping rubber cushion 1, make it directly not contact with the qin chamber of above-mentioned qin body, damping rubber cushion 1 is bonded on the dividing plate 18 of qin chamber internal fixation, and the piezoelectric type string vibration transducer BZ of impedance matching audio-frequency transformer (AFT) B and connection draws shielding wire and is connected lead.
Embodiment 2: as shown in Figure 1, the present invention is made up of qin body and passive electric circuit two parts.The qin body is high Chinese fiddle body, and the qin body mainly includes qin bar 9, peg 6, string 5, very heavy 7, qin chamber 11, cylinder 27, qin chamber covering 16, qin holder 5, qin sign indicating number 3 and bow 10 are decorated in the qin chamber.As shown in Figure 3, the passive electric circuit part is exported and is added earphone and form by piezoelectric type string vibration transducer BZ, impedance matching box, tamber transformation device, circuit.Piezoelectric type string vibration transducer BZ is made up of piezoelectric ceramic piece 2, resonator cavity 4, damping rubber cushion 1 and shielded lead.Impedance matching box adopts the audio-frequency transformer (AFT) B that has the primary and secondary winding.The tamber transformation device is made up of the primary coil of impedance matching box and shnt capacitor or 2 capacitors and tamber transformation switch at least.This embodiment 3 capacitor C in parallel
1, C
2, C
3, described connection lead inserts receiver J-Horner seat CZ, and the tamber transformation switch is the single-pole triple-throw (SPTT) switch S.
In Fig. 1, the qin chamber covering 16 that covers on the qin chamber has been thrown off, can see passive electric circuit part components and parts damping rubber cushion 1, piezoelectric ceramic piece 2, resonator cavity 4 and tamber transformation switching knob 12 and additional earphone 14.
Fig. 2 is the A-A sectional view of Fig. 1, is passive electric circuit components and parts scheme of installations.In Fig. 2, string 8 through qin sign indicating numbers 3 after, its terminal is enclosed within on the string fixed screw 17 in the qin holder 5, after string was by peg 6 tensions, qin sign indicating number 3 just was pressed on the qin chamber covering 16.Therefore what qin chamber covering 16 was close to below is piezoelectric ceramic piece 2, is drawing when playing, and the vibration of string 8 is passed on the piezoelectric ceramic piece 2 by qin sign indicating number 3 and qin chamber covering 16, causes the mechanical vibration of piezoelectric ceramic piece 2.Piezoelectric ceramic piece 2 is fixed on the plastics resonator cavity 4, because resonator cavity 4 is hollow, makes the vibration of the piezoelectric ceramic piece 2 that is fixed in the above unaffected.Resonator cavity 4 is bonded on the flexible damping rubber cushion 1, makes it and does not directly contact with qin chamber 11, and absorption and blocking effect owing to 1 pair of vibration of damping rubber cushion prevent qin chamber 11 effect of vibing, and just might keep drawing the mute function when playing.Damping rubber cushion 1 is bonded on the dividing plate 18 of qin chamber 11 internal fixation, to prevent the slippage of damping rubber cushion 1.Circuit board 19 is fixed on the dividing plate 18 by circuit board fixed screw 20, has the piezoelectric type string vibration transducer of capacitor 21, impedance matching audio-frequency transformer (AFT) 22 and connection to draw shielding wire 15 and be connected lead 26 on the plate.Connecting lead 26 couples together circuit board 19 and tamber transformation switch 23, receiver J-Horner seat 24.In Fig. 2,9 times halves of qin bar are inserted on the fixed orifice in qin chamber 11, and it is solid on qin chamber 11 that qin holder 5 utilizes string fixed screw 17 to twist.It is the extensions in qin chamber 11 that cylinder 27 is decorated in the qin chamber, and qin chamber flower window dividing plate 25 is fixed on the qin chamber and decorates on the cylinder 27.Be fixed with tamber transformation switch 23, receiver J-Horner seat 24 on the qin chamber flower window dividing plate 25, tamber transformation switching knob 12 is fixed on the circular shaft of tamber transformation switch 23, and the additional receiver J-Horner head 13 of additional earphone 14 is plugged on the receiver J-Horner seat 24.Receiver J-Horner seat 24 has the effect of line signal delivery outlet concurrently, can the line signal of output be amplified in case of necessity, connects the expander playback.
Piezoelectric type string vibration transducer, promptly the piezoelectric type string vibration transducer BZ among Fig. 3 draws shielding wire 15 by the piezoelectric ceramic piece among Fig. 22, resonator cavity 4, damping rubber cushion 1 and piezoelectric type string vibration transducer and forms.The function of piezoelectric type string vibration transducer BZ is the mechanical vibration of picking up string 8, transforms mechanical energy into electricity, and produces corresponding tone currents and changes, and obtain certain electric power and can directly drive the earphone sounding.
Impedance matching box is born by the impedance matching audio-frequency transformer (AFT) B among Fig. 3, its primary coil L1 two ends and impedance are that the piezoelectric type string vibration transducer BZ of 10k Ω links to each other, its secondary coil L2 is a double winding, is that the receiver J-Horner seat 24 of the additional earphone 14 of 2 * 32 Ω links to each other with impedance respectively.The effect of impedance matching box is that the output of the piezoelectric type string vibration transducer BZ tone currents of high impedance is complementary with low-impedance additional earphone 14 loads, improve current delivery efficient, the power that makes piezoelectric type string vibration transducer BZ output drive the earphone sounding is fully used as far as possible, make earphone obtain the 20mW driving power, can obtain satisfied earphone playback volume.
The tamber transformation device is by the impedance matching audio-frequency transformer (AFT) B primary coil L among Fig. 3
1, capacitor C
1, C
2, C
3, the single-pole triple-throw (SPTT) switch S forms.When the single-pole triple-throw (SPTT) switch S is thrown at contact S
1The time, impedance matching audio-frequency transformer (AFT) B primary coil L
1With capacitor C
1Be in parallel, form parallel resonance, form bandpass filtering.Because capacitor C
1Electric capacity less, parallel resonance frequency is higher, thereby filtered tone color is bright.In like manner, throw at contact S when the single-pole triple-throw (SPTT) switch S
2The time, produce mellow and full tone color; When the single-pole triple-throw (SPTT) switch S is thrown at contact S
3The time, because capacitor C
3Electric capacity is bigger, gives birth to dull tone color.Certainly, this tamber transformation device circuit removes and impedance matching audio-frequency transformer (AFT) B primary coil L
1, capacitor C
1, C
2, C
3Outside the relating to parameters, also relevant with the reflected impedance of the capacitive reactance of piezoelectric type string vibration transducer BZ output, coupling audio-frequency transformer (AFT) B primary and secondary coil.Obviously, this tone color filtering circuit need not the power supply power supply, is passive tone color filtering circuit.
Output circuit is by the impedance matching audio-frequency transformer (AFT) B double winding secondary coil L among Fig. 3
2, the additional earphone 14 among receiver J-Horner seat CZ and Fig. 1 additional receiver J-Horner head 13 be inserted in receiver J-Horner seat 24 among Fig. 2, just the receiver J-Horner seat CZ among Fig. 3.Receiver J-Horner seat CZ is the stereophone socket, two contact J
1And J
2Respectively with impedance matching audio-frequency transformer (AFT) B double winding secondary coil L
2Two ends link to each other, and its center head links to each other with receiver J-Horner seat 24 public land ends.When external stereo additional earphone 14, because the tone currents phase place that left and right sides earphone is obtained is opposite, the effect that can obtain simulating stereo, when particularly receiving the stereo amplification device by the signal of receiver J-Horner seat 24 outputs, since about two stereo speaker playback phase places opposite, because the different sound waves of playback frequency produce also difference of Overlay in air, can produce source of sound and locate dimly discernible indefinitely, simulate stereosonic effect.
Can prefabricated or conversion tone color by the single-pole triple-throw (SPTT) switch S in the tamber transformation device, include brightly, mellow and full and dull three kinds of tone colors are added because the earphone tone currents phase place that obtained in the left and right sides is opposite, the effect that generation simulates stereo can be improved tone color dullness and acoustics.
Embodiment 3: with embodiment 2 structures different be that the qin body is a Chinese lute qin body, piezoelectric ceramic piece contacts with the string of Chinese lute qin body, passive electric circuit is identical with embodiment 2.
Embodiment 4: the structure at many strings such as seven-stringed plucked instrument in some ways similar to the zither (zither), dulcimers, and adopt at least 2 above-mentioned passive electric circuits to contain corresponding piezoelectric ceramic piece, be installed in respectively under the qin sign indicating number on the qin body.
Claims (7)
1, a kind of passive electrical stringed musical instrument is made up of qin body and passive electric circuit two parts, it is characterized in that: the passive electric circuit part is by piezoelectric type string vibration transducer, impedance matching box is formed, piezoelectric type string vibration transducer is by piezoelectric ceramic piece, resonator cavity, damping rubber cushion and shielded lead are formed, impedance matching box adopts the audio-frequency transformer (AFT) that has the primary and secondary winding, piezoelectric ceramic piece is fixed on the resonator cavity, resonator cavity is bonded on the damping rubber cushion, make it directly not contact with the qin chamber, the damping rubber cushion is bonded on the dividing plate of qin chamber internal fixation, and the piezoelectric type string vibration transducer of impedance matching audio-frequency transformer (AFT) and connection is drawn shielding wire and is connected lead.
2, a kind of passive electrical stringed musical instrument according to claim 1, it is characterized in that: passive electric circuit partly has the tamber transformation device, and the tamber transformation device connects capacitor by the audio-frequency transformer (AFT) primary coil.
3, a kind of passive electrical stringed musical instrument according to claim 1 and 2, it is characterized in that: passive electric circuit partly has the tamber transformation device, the tamber transformation device is connected by 2 capacitors of parallel connection of primary windings and the tamber transformation switch of impedance matching box at least, the primary coil two ends of impedance matching audio-frequency transformer (AFT) link to each other with piezoelectric type string vibration transducer, and impedance matching audio-frequency transformer (AFT) primary coil and capacitor are in parallel.
4, a kind of passive electrical stringed musical instrument according to claim 1 and 2 is characterized in that: described connection lead is connected with receiver J-Horner seat on being fixed on the qin chamber.
5, a kind of passive electrical stringed musical instrument according to claim 3 is characterized in that: described connection lead is connected with receiver J-Horner seat on being fixed on the qin chamber.
6, a kind of passive electrical stringed musical instrument according to claim 1 and 2 is characterized in that: adopt at least 2 above-mentioned passive electric circuits to contain corresponding piezoelectric ceramic piece, be installed in respectively under the qin sign indicating number on the qin body.
7, a kind of passive electrical stringed musical instrument according to claim 3 is characterized in that: adopt at least 2 above-mentioned passive electric circuits to contain corresponding piezoelectric ceramic piece, be installed in respectively under the qin sign indicating number on the qin body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101234427A CN100390858C (en) | 2003-12-29 | 2003-12-29 | A passive electric string instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101234427A CN100390858C (en) | 2003-12-29 | 2003-12-29 | A passive electric string instrument |
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| CN1555045A true CN1555045A (en) | 2004-12-15 |
| CN100390858C CN100390858C (en) | 2008-05-28 |
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| CNB2003101234427A Expired - Fee Related CN100390858C (en) | 2003-12-29 | 2003-12-29 | A passive electric string instrument |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344996B (en) * | 2007-07-10 | 2010-06-16 | 洛阳师范学院 | An electronic auxiliary teaching system for stringed music |
| CN1855221B (en) * | 2005-04-28 | 2011-07-06 | 雅马哈株式会社 | Changer and stringed instrument equipped with the same |
| US7982125B2 (en) | 2005-04-28 | 2011-07-19 | Yamaha Corporation | Transducer and stringed musical instrument including the same |
| CN102496362A (en) * | 2011-11-21 | 2012-06-13 | 中国科学院半导体研究所 | Equipment and method for voice monitoring |
| CN103578457A (en) * | 2012-07-31 | 2014-02-12 | 李凤明 | Passive interchangeable electronic plate Erhu head |
| CN104575474A (en) * | 2013-10-10 | 2015-04-29 | 曾平蔚 | Electronic musical instrument trigger inductive switch two-in-one detection method and device |
| CN104756180A (en) * | 2014-09-02 | 2015-07-01 | 片山一朗 | Pickup unit of string instrument |
| CN106098043A (en) * | 2016-06-12 | 2016-11-09 | 中北大学 | A kind of electronic violin and its implementation |
| CN106560890A (en) * | 2017-01-03 | 2017-04-12 | 许昌义 | Vibration isolation type sound pickup unit of string instrument |
| CN113763911A (en) * | 2020-06-18 | 2021-12-07 | 陈岳 | An electronic percussion melody instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN86207742U (en) * | 1986-09-29 | 1987-06-24 | 肖沛 | Radio-electronic vocal converter |
| AU2426300A (en) * | 1999-02-02 | 2000-08-25 | Guitron Corporation, The | Electronic stringed musical instrument |
| JP2001132070A (en) * | 1999-11-08 | 2001-05-15 | Inax Corp | Toilet bowl construction |
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2003
- 2003-12-29 CN CNB2003101234427A patent/CN100390858C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855221B (en) * | 2005-04-28 | 2011-07-06 | 雅马哈株式会社 | Changer and stringed instrument equipped with the same |
| US7982125B2 (en) | 2005-04-28 | 2011-07-19 | Yamaha Corporation | Transducer and stringed musical instrument including the same |
| CN101344996B (en) * | 2007-07-10 | 2010-06-16 | 洛阳师范学院 | An electronic auxiliary teaching system for stringed music |
| CN102496362A (en) * | 2011-11-21 | 2012-06-13 | 中国科学院半导体研究所 | Equipment and method for voice monitoring |
| CN103578457A (en) * | 2012-07-31 | 2014-02-12 | 李凤明 | Passive interchangeable electronic plate Erhu head |
| CN104575474A (en) * | 2013-10-10 | 2015-04-29 | 曾平蔚 | Electronic musical instrument trigger inductive switch two-in-one detection method and device |
| CN104575474B (en) * | 2013-10-10 | 2018-02-06 | 深圳市咪发发科技有限公司 | Electronic musical instrument triggers the method and device of the two-in-one detection of inductive switch |
| CN104756180A (en) * | 2014-09-02 | 2015-07-01 | 片山一朗 | Pickup unit of string instrument |
| CN106098043A (en) * | 2016-06-12 | 2016-11-09 | 中北大学 | A kind of electronic violin and its implementation |
| CN106560890A (en) * | 2017-01-03 | 2017-04-12 | 许昌义 | Vibration isolation type sound pickup unit of string instrument |
| CN113763911A (en) * | 2020-06-18 | 2021-12-07 | 陈岳 | An electronic percussion melody instrument |
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|---|---|
| CN100390858C (en) | 2008-05-28 |
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