CN101329863B - Photoelectric control transposer for electric guitar - Google Patents
Photoelectric control transposer for electric guitar Download PDFInfo
- Publication number
- CN101329863B CN101329863B CN2008100484540A CN200810048454A CN101329863B CN 101329863 B CN101329863 B CN 101329863B CN 2008100484540 A CN2008100484540 A CN 2008100484540A CN 200810048454 A CN200810048454 A CN 200810048454A CN 101329863 B CN101329863 B CN 101329863B
- Authority
- CN
- China
- Prior art keywords
- infrared
- circuit
- electric guitar
- control
- audio
- 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
- Electrophonic Musical Instruments (AREA)
Abstract
The invention relates to a photoelectric control electric guitar pitch shifter which comprises an AF (audio frequency) pitch shifter circuit and an AF pitch shifter control circuit. The pitch shifter is characterized in that: the AF pitch shifter control circuit comprises a control coding circuit and a photo-electric sensing control module connected with the control coding circuit. The photo-electric sensing control module comprises an infrared-emitting diode, an infrared-receiving diode in corresponding arrangement as well as a sensing block provided with a narrow and long sensing groove which is provided with the infrared-emitting diode and the infrared-receiving diode at two sides correspondingly. The pitch shifter of the invention has the beneficial effects that: 1. people who play the electric guitar can control and change the pitch of the electric guitar conveniently only by moving fingers on the sensing groove in the non-contact photo-electric sensing control module, thereby enhancing the playing effect of the electric guitar further; 2. the pitch shifter can be directly inserted in the output end of the electric guitar to fulfill the function of pitch shifting without changing the structure of the electric guitar; the operation is simple and the application is convenient.
Description
Technology neck city
The present invention relates to a kind of photoelectric control transposer for electric guitar, this device can be regulated transposer for electric guitar through the noncontact induction control of finger and modify tone, and the tone of electric guitar output audio is changed.
Background technology
Electric guitar is to use electrophonic musical instrument comparatively widely, the sound signal of its output to need to carry out follow-up playback through the special-purpose audio amplifier of electric guitar at present.Electric guitar contains the audio signal output circuit; The electric guitar that has the modified tone function need be provided with the audio pitch shifting device; Be connected between the input port of tone playing equipment such as the special-purpose audio amplifier of electric guitar Audio output port and follow-up electric guitar; On an electric guitar, just can play out multiple different tones like this, make the playing function of electric guitar be improved.Yet; Existing electric guitar audio pitch shifting device is wanted to regulate and the high low pitch that changes output audio is mostly realized through changing mechanical switch; Such regulative mode makes very difficulty of the performance personnel want arbitrarily and accurately to change electric guitar output in the process of playing tone; This has brought inconvenience not only for the actual use of electric guitar, and influences the playing effect of electric guitar to a certain extent.
Summary of the invention
Technical matters to be solved by this invention is the deficiency that exists to above-mentioned prior art and a kind of photoelectric control transposer for electric guitar that is installed on the electric guitar is provided; It can and regulate transposer for electric guitar through noncontact induction mode control, thus be implemented in the playing procedure of electric guitar convenient and change the output tone of electric guitar accurately.
The present invention for the technical scheme that problem adopted of the above-mentioned proposition of solution is: include audio pitch shifting device circuit and audio pitch shifting device control circuit, its difference is that described audio pitch shifting device control circuit comprises control coding circuit and the optoelectronic induction control module of joining with the control coding circuit.
Press such scheme; Described optoelectronic induction control module comprises infrared-emitting diode and the infrared emission drive circuit that is disposed; Corresponding infrared receiving diode that is provided with and the infrared reception amplifying circuit that is disposed; Also comprise the sensor block that offers long and narrow induction groove, correspondence is installed infrared-emitting diode and infrared receiving diode in the long and narrow induction groove both sides of sensor block.
Press such scheme; Described optoelectronic induction control module comprises 3 infrared-emitting diode D1, D2, D3 and the infrared emission drive circuit that is disposed; Corresponding 3 infrared receiving diode D4, D5, D6 that are provided with and the infrared reception amplifying circuit that is disposed; Also comprise the sensor block that offers long and narrow induction groove, correspondence is installed 3 infrared-emitting diode D1, D2, D3 and 3 infrared receiving diode D4, D5, D6 in the long and narrow induction groove both sides of sensor block.
Press such scheme, described sensor block is installed in the front or the side of electric guitar qin body.
Press such scheme, described control coding circuit is made up of single-chip microcomputer U1 (MCU) and peripheral resistance, electric capacity.
Press such scheme; Described audio pitch shifting device circuit is made up of modified tone chip U2 (IC) and peripheral circuit; Audio pitch shifting device circuit control end links to each other with the output terminal of control coding circuit; Audio pitch shifting device circuit is provided with audio input interface and audio output interface, and audio input interface and audio output interface join with the Audio output port of electric guitar and the special-purpose audio amplifier tone playing equipment of electric guitar input port respectively.
The course of work of the present invention is: sensor block is a noncontact infrared induction module; During performance when needs change tone; The player is through pointing occupy-place and displacement different in the induction groove of sensor block; Can change the photosignal of induction in the groove, make the optoelectronic induction control module detect the variation of command signal, and the command signal that changes is sent to the control coding circuit encodes; Coded signal is delivered to audio pitch shifting device circuit control modified tone circuit operate as normal; The electric guitar signal of playing modifies tone by the instruction that modifies tone to the audio pitch shifting device through the sound signal input circuit, and the electric guitar signal that has changed tone is transported to audio output circuit through audio pitch shifting device output interface and exports to follow-up playback circuit, promptly accomplishes the task of changing electric guitar output tone in the playing procedure.
Beneficial effect of the present invention is:
1, the performance personnel only need to point in the process of playing electric guitar in the induction groove of non-contact optoelectronic induction control module, to move conveniently to control and change electric guitar and export tone, and the playing effect of electric guitar is further enhanced;
2, direct grafting transposer on the electric guitar output port can be realized the function that modifies tone, and need not to change the structure of electric guitar, and is simple to operate, easy to use.
Description of drawings
Fig. 1 is the circuit block diagram of one embodiment of the invention.
Fig. 2 is the audio pitch shifting device control circuit schematic diagram of one embodiment of the invention.
Fig. 3 is the audio pitch shifting device circuit theory diagrams of one embodiment of the invention.
Fig. 4 is the optoelectronic induction control module vertical view of one embodiment of the invention.
Fig. 5 is the optoelectronic induction control module positive view of one embodiment of the invention.
Embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing, include audio pitch shifting device circuit and audio pitch shifting device control circuit, described audio pitch shifting device control circuit comprises control coding circuit and the optoelectronic induction control module that links to each other with the control coding circuit.Described optoelectronic induction control load module comprises 3 infrared-emitting diode D1, D2, D3 and the infrared emission drive circuit that is disposed; Infrared emission drive circuit is linked to each other and constitutes with infrared-emitting diode D1, D2, D3 respectively by 3 triode Q1, Q2, Q3; Wherein the collector of each triode links to each other with each infrared-emitting diode D1, D2, D3 through resistance R 3, R5, R7 respectively; The positive pole of each infrared-emitting diode connects with power supply; The base stage of each triode is joined the grounded emitter of each triode through the single-chip microcomputer U1 (MCU) of resistance R 2, R4, R6 and control coding circuit respectively; Corresponding 3 infrared-emitting diode D1, D2, D3 are provided with 3 infrared receiving diode D4, D5, D6; Each infrared receiving diode disposes infrared reception amplifying circuit; Infrared reception amplifying circuit is linked to each other and constitutes with infrared receiving diode D4, D5, D6 respectively by 3 triode Q4, Q5, Q6; Wherein the collector of each triode joins with the signal input part of single-chip microcomputer U1 respectively and connects with power supply through resistance R 8, R10, R12 respectively simultaneously; The base stage of each triode connects with power supply through infrared receiving diode D4, D5, D6 respectively, ground connection after linking to each other with each emitter through resistance R 9, R11, R13 respectively simultaneously; The optoelectronic induction control module also comprises the sensor block 1 that offers long and narrow induction groove 3, and correspondence is installed 3 infrared-emitting diode D1, D2, D3 and 3 infrared receiving diode D4, D5, D6 in the long and narrow induction groove both sides of sensor block.Described sensor block pastes the front of electric guitar qin body 2 through viscose glue or double faced adhesive tape.Described control coding circuit is made up of single-chip microcomputer U1 (MCU) and peripheral resistance R 1, capacitor C 1, C2.Control signal through behind the MCU coding outputs to audio pitch shifting device circuit through joint J2.Described audio pitch shifting device circuit is made up of modified tone chip U2 (IC) and peripheral circuit, and the signal input end and the interface CON3 of the chip that wherein modifies tone join, and to modified tone chip U2, controls modified tone chip operate as normal through interface CON3 input control signal; Audio pitch shifting device circuit is provided with audio input interface CON1, arrives modified tone chip U2 the 6th pin, and connects with modified tone chip U2 the 5th pin through resistance R 14 through capacitor C 3, resistance R 15 through interface CON1; Audio output signal is exported to audio output interface CON2 through resistance R 17, R18, capacitor C 4, C5 and resistance R 21 by modified tone chip U2 the 9th pin; Audio input interface and audio output interface join with the Audio output port of electric guitar and the special-purpose audio amplifier tone playing equipment of electric guitar input port respectively.The peripheral circuit of modified tone chip also comprises resistance R 19, the R20 that is connected between the 12nd, 13,14 pin, direct earth capacitance C6, C7, C8, and the other end of capacitor C 7, C8 and power supply line join; In addition, on the line of power supply and modified tone chip U2 the 7th pin, be connected to resistance R 16 and LED.
The use of present embodiment and circuit working process are: D1 and D4, D2 and D5, D3 and D6 respectively form the infrared ray transmitting-receiving to pipe; Each controls certain interval range; Do not pass through the infrared light material through finger or other and block change to the infrared light flux between pipe, thereby change the signal of infrared receiver tube, this signal passes to the relevant pin position of single-chip microcomputer after Q4, Q5, Q6 amplify; Single-chip microcomputer U1 is through the variation of software detection to relevant pin position signal; Accomplish required control function corresponding codes through operations such as detection, computings, send the audio pitch shifting device to through single-chip microcomputer U1 pin 9,10,11, audio pitch shifting receives corresponding control change sign indicating number back and does relevant modified tone work.As: finger is managed passing through D2, D5 pipe to managing right interval up to D3, D6 by D1, D4, and single-chip microcomputer detects finger and moved to height by low, sends the control signal (as sending out 1,0,0 yard the first time) that rises an accent to transposer after the process computing; As: finger by D3, D6 pipe to through D2, D5 pipe to up to D1, the right interval of D4 pipe, monolithic detect finger by height to harmonic motion, through after the computing to transposer send an accent falls and control signal (as sending out 0 for the first time; 1,0 yard), this moment as: two fingers are moved by D2, D5 pipe subtend D1, D4 pipe and D3, the right interval of D6 pipe respectively simultaneously; Single-chip microcomputer detects finger and is moved to two limits by the centre; Through sending the control signal (as sending out 0,1,1 yard) that resets to transposer after the computing.
One embodiment of the invention modified tone coding and modified tone amount are seen table 1:
Table 1 modifies tone and encodes and the modified tone amount
Claims (6)
1. a photoelectric control transposer for electric guitar includes audio pitch shifting device circuit and audio pitch shifting device control circuit, it is characterized in that described audio pitch shifting device control circuit comprises control coding circuit and the optoelectronic induction control module of joining with the control coding circuit; Described optoelectronic induction control module comprises infrared-emitting diode and the infrared emission drive circuit that is disposed; Corresponding infrared receiving diode that is provided with and the infrared reception amplifying circuit that is disposed; Also comprise the sensor block that offers long and narrow induction groove, correspondence is installed infrared-emitting diode and infrared receiving diode in the long and narrow induction groove both sides of sensor block; Described optoelectronic induction control module comprises 3 infrared-emitting diode D1, D2, D3 and the infrared emission drive circuit that is disposed; Corresponding 3 infrared receiving diode D4, D5, D6 that are provided with and the infrared reception amplifying circuit that is disposed; Also comprise the sensor block that offers long and narrow induction groove, correspondence is installed 3 infrared-emitting diode D1, D2, D3 and 3 infrared receiving diode D4, D5, D6 in the long and narrow induction groove both sides of sensor block.
2. by the described photoelectric control transposer for electric guitar of claim 1, it is characterized in that described sensor block is installed in the front or the side of electric guitar qin body.
3. by the described photoelectric control transposer for electric guitar of claim 1, it is characterized in that described control coding circuit is made up of single-chip microcomputer U1 and peripheral resistance, electric capacity.
4. by the described photoelectric control transposer for electric guitar of claim 1; It is characterized in that described audio pitch shifting device circuit is made up of modified tone chip U2 and peripheral circuit; Audio pitch shifting device circuit control end links to each other with the output terminal of control coding circuit; Audio pitch shifting device circuit is provided with audio input interface and audio output interface, and audio input interface and audio output interface are connected with the input port of the Audio output port of electric guitar and the follow-up special-purpose audio amplifier tone playing equipment of electric guitar respectively.
5. by the described photoelectric control transposer for electric guitar of claim 1; It is characterized in that described infrared emission drive circuit is linked to each other and constitutes with infrared-emitting diode D1, D2, D3 respectively by 3 triode Q1, Q2, Q3; Wherein the collector of each triode links to each other with each infrared-emitting diode D1, D2, D3 through resistance R 3, R5, R7 respectively; The positive pole of each infrared-emitting diode connects with power supply; The base stage of each triode is joined through the single-chip microprocessor MCU of resistance R 2, R4, R6 and control coding circuit respectively, the grounded emitter of each triode; Corresponding 3 infrared-emitting diode D1, D2, D3 are provided with 3 infrared receiving diode D4, D5, D6; Each infrared receiving diode disposes infrared reception amplifying circuit; Infrared reception amplifying circuit is linked to each other and constitutes with infrared receiving diode D4, D5, D6 respectively by 3 triode Q4, Q5, Q6; Wherein the collector of each triode joins with the signal input part of single-chip microprocessor MCU respectively and connects with power supply through resistance R 8, R10, R12 respectively simultaneously; The base stage of each triode connects with power supply through infrared receiving diode D4, D5, D6 respectively, ground connection after linking to each other with each emitter through resistance R 9, R11, R13 respectively simultaneously.
6. by the described photoelectric control transposer for electric guitar of claim 4; The signal input end and the interface CON3 that it is characterized in that the modified tone chip U2 of described audio pitch shifting device circuit join; To modified tone chip U2, control modified tone chip operate as normal through interface CON3 input control signal; Audio pitch shifting device circuit is provided with audio input interface CON1, arrives modified tone chip the 6th pin, and connects with modified tone chip the 5th pin through resistance R 14 through capacitor C 3, resistance R 15 through interface CON1; Audio output signal is exported to audio output interface CON2 through resistance R 17, R18, capacitor C 4, C5 and resistance R 21 by modified tone chip the 9th pin; Audio input interface is connected with the special-purpose audio amplifier tone playing equipment of electric guitar input port with the Audio output port of electric guitar respectively with audio output interface; The peripheral circuit of modified tone chip also comprises resistance R 19, the R20 that is connected between the 12nd, 13,14 pin; Direct earth capacitance C6, C7, C8, the other end of capacitor C 7, C8 and power supply line join; In addition, on the line of power supply and modified tone chip IC the 7th pin, be connected to resistance R 16 and LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100484540A CN101329863B (en) | 2008-07-18 | 2008-07-18 | Photoelectric control transposer for electric guitar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100484540A CN101329863B (en) | 2008-07-18 | 2008-07-18 | Photoelectric control transposer for electric guitar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101329863A CN101329863A (en) | 2008-12-24 |
| CN101329863B true CN101329863B (en) | 2012-08-22 |
Family
ID=40205635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100484540A Expired - Fee Related CN101329863B (en) | 2008-07-18 | 2008-07-18 | Photoelectric control transposer for electric guitar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101329863B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011079465A1 (en) * | 2009-12-31 | 2011-07-07 | 孙亚凯 | Infrared induction electric guitar |
| CN102355215B (en) * | 2011-05-20 | 2013-10-02 | 武汉艾立卡电子有限公司 | Non-contact audio equipment volume controller and control method thereof |
| JP7396014B2 (en) * | 2019-12-13 | 2023-12-12 | ヤマハ株式会社 | Setting device and controls |
| CN115359770A (en) * | 2022-08-23 | 2022-11-18 | 深圳市戴乐体感科技有限公司 | Intelligent guitar and tone-changing control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2088731U (en) * | 1991-03-06 | 1991-11-13 | 彭东交 | Simple guitar finger board tone modifier |
| CN2337644Y (en) * | 1997-12-09 | 1999-09-08 | 温向前 | Multi-function stereo electric guitar |
| CN2666083Y (en) * | 2003-12-12 | 2004-12-22 | 赖荣模 | Infrared inductive dimmer |
-
2008
- 2008-07-18 CN CN2008100484540A patent/CN101329863B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2088731U (en) * | 1991-03-06 | 1991-11-13 | 彭东交 | Simple guitar finger board tone modifier |
| CN2337644Y (en) * | 1997-12-09 | 1999-09-08 | 温向前 | Multi-function stereo electric guitar |
| CN2666083Y (en) * | 2003-12-12 | 2004-12-22 | 赖荣模 | Infrared inductive dimmer |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平7-64555A 1995.03.10 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101329863A (en) | 2008-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101329863B (en) | Photoelectric control transposer for electric guitar | |
| CN203838219U (en) | Isolation detecting device for analog electric signals | |
| CN201680907U (en) | Dual-purpose optical power meter | |
| CN203813780U (en) | Power line carrier wave communication device | |
| CN101436882A (en) | Power-line carrier communication circuit | |
| CN206743523U (en) | Audio signal detection switch circuit and audio frequency apparatus | |
| CN202513907U (en) | Broadband frequency-voltage converting circuit | |
| CN201828264U (en) | Continuous laser detector | |
| CN207321519U (en) | A kind of intelligent sound box based on wireless communication module | |
| CN204577071U (en) | Assembled keyboard | |
| CN205377830U (en) | Analog output circuit | |
| CN207251582U (en) | Possesses the I O multiplexing port control circuit of button detection function | |
| CN208189935U (en) | A kind of lamplight brightness can be with the data line of sound variation | |
| CN207124633U (en) | A kind of reverse transmitter modules of the RFOG of photoreceiver | |
| CN209015118U (en) | A kind of infrared signal receiving circuit, processing circuit and infrared touch panel | |
| CN203596003U (en) | Light touch screen control circuit, device and system | |
| CN208459808U (en) | The gas detection system of digital signal and analog signal can be inputted simultaneously | |
| CN206490875U (en) | A kind of photoelectric detection system | |
| CN103257726B (en) | Wireless photoelectric input pen | |
| CN206788589U (en) | Multi-functional mobile phone light aid | |
| CN207819882U (en) | A kind of level switch module | |
| CN2508317Y (en) | Rotary radio remote controller | |
| CN203572501U (en) | Enhanced long distance digital quantity output proximity sensor | |
| CN208156029U (en) | Test the speed display and radium-shine lamp control device | |
| CN201094030Y (en) | Double analog deflection proportion type photoelectric sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20180718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |