CN103928021A - Electroacoustic erhu - Google Patents
Electroacoustic erhu Download PDFInfo
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- CN103928021A CN103928021A CN201410176082.5A CN201410176082A CN103928021A CN 103928021 A CN103928021 A CN 103928021A CN 201410176082 A CN201410176082 A CN 201410176082A CN 103928021 A CN103928021 A CN 103928021A
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Abstract
The invention discloses an electroacoustic erhu. The electroacoustic erhu comprises a structural component, a tone detection device, a tone storage device, a loudness detection device, a bowing detection device, a sound effect processing device and a central controller, wherein the tone detection device, the tone storage device, the loudness detection device, the bowing detection device, the sound effect processing device and the central controller are arranged on the structural component. The central controller comprises an audio frequency selection module, a bowing detection module, a loudness detection module and a sound effect processing module. When the electroacoustic erhu is used, a user presses a button and draws a bow so as to input tone, loudness and bowing information, then a system calls out a corresponding audio frequency from the tone storage device according to the input information, the audio frequency is output after corresponding sound effect processing is conducted on the audio frequency, the whole process is electronized completely, and the system is low in cost.
Description
Technical field
The invention belongs to information detection, audio process field, relate to a kind of electroacoustic urheen electronic system that can gather user's playing information and audio processing that has.
Background technology
The electroacoustic urheen in front two generations of main flow in the market.First generation electroacoustic urheen only adds loudspeaker on the basis of former urheen; The second generation is transferred to effect device after gathering urheen voice signal by acoustic pickup, and output electrical signals after treatment, plays by power amplifier.The tonequality of the electroacoustic urheen in front two generations all be unable to do without the material of former urheen itself, also just cannot break away from high tone quality and equal expensive this market discipline.
The invention enables the tonequality of urheen to break away from the constraint of material, the urheen standard pronunciation file of high tone quality is got up by recording and storing, electroacoustic urheen, from operating to electronization completely, can significantly be reduced to the great number cost of electroacoustic urheen.
Summary of the invention
Technical matters: the present invention seeks to provides for user the electroacoustic urheen that a kind of electronic degree is higher, cost is lower.
Technical scheme: electroacoustic urheen of the present invention, comprise structure member, be arranged on tone detecting device, tone color memory storage, loudness pick-up unit, bowing pick-up unit, sound-effect processing equipment and central controller on structure member, it is characterized in that, central controller comprises that audio frequency chooses module, bowing detection module, loudness detection module and audio processing module;
Tone detecting device is made up of button and Hall element, gather respectively user's fingering and hand position, confirm urheen tone information, and be transferred to audio frequency and choose module;
Tone color memory storage is in order to store the standard pronunciation file of each tone of urheen;
String internal tension size when loudness pick-up unit is gathered user and played by pressure transducer, and be transferred to loudness detection module;
Bowing pick-up unit gathers the acceleration of the bow of user's performance by acceleration transducer, and is transferred to bowing detection module;
Audio frequency is chosen module, detects the urheen tone information obtaining according to tone detecting device, transfers corresponding standard pronunciation file transfer to sound-effect processing equipment from tone color memory storage;
Bowing detection module, detects the bow acceleration information obtaining according to bowing pick-up unit, judge whether user is drawing bow, thus determine urheen whether in playing state, and by the playing state communication of urheen to audio processing module;
Loudness detection module, detects by loudness pick-up unit the string internal tension size data obtaining and is converted to Erhu playing loudness data, is then transferred to audio processing module;
Audio processing module, according to the playing state information of urheen with play loudness data control sound-effect processing equipment: when urheen is during in non-playing state, send out-of-work order to sound-effect processing equipment; When urheen is during in playing state, send the order of starting working to sound-effect processing equipment, and to its transmission Erhu playing loudness data;
Sound-effect processing equipment, the out-of-work order sending according to audio processing module, stops external output audio signal; The order of starting working and the Erhu playing loudness data that send according to audio processing module, amplify backward external transmission by the sound signal of the standard pronunciation file of tone color memory storage output according to Erhu playing loudness data.
In preferred version of the present invention, electroacoustic urheen also comprises acoustics, and sound-effect processing equipment is transferred to acoustics after sound signal is amplified and externally plays.
In preferred version of the present invention, in tone color memory storage, the standard pronunciation file of each tone is with coding form name storage; Tone detecting device is confirmed urheen tone information according to same coding rule and is given coding, then coding transmission chosen to module to audio frequency; Audio frequency is chosen module and from tone color memory storage, is transferred standard pronunciation file according to the coding receiving.
In preferred version of the present invention, bowing detection module determine urheen whether the concrete grammar in playing state be: the speed data that is bow by the acceleration information Integral Transformation of bow, if the speed of bow is non-vanishing, judges that urheen is in playing state; Otherwise urheen is in non-playing state.
In preferred version of the present invention, audio processing module is also carried out the control of filtering noise reduction according to user's demand to sound-effect processing equipment: in the time that user need to carry out filtering noise reduction process to sound signal, send the order of opening filtering decrease of noise functions to sound-effect processing equipment; In the time that user does not need sound signal to carry out filtering noise reduction, send the order of closing filtering decrease of noise functions to sound-effect processing equipment.
When sound-effect processing equipment receives the order of opening filtering decrease of noise functions, after sound signal is amplified, then carry out the backward outer transmission of filtering noise reduction; While receiving the order of closing filtering decrease of noise functions, directly outwards transmission after sound signal being amplified.
Tone detecting device, tone color memory storage, loudness pick-up unit, bowing pick-up unit are connected central controller with sound-effect processing equipment; Central processing unit output control signal is to tone detecting device, tone color memory storage, loudness pick-up unit, bowing pick-up unit and sound-effect processing equipment.
First tone detecting device, loudness pick-up unit and bowing pick-up unit collection user's performance operation information is transferred to central controller, and tone color memory storage provides the sound signal of primary standard sound; Then, the software section of central controller is transferred to sound-effect processing equipment after user's performance operation information is processed together with original audio signal; Finally, sound-effect processing equipment to sound equipment, is externally play audio signal transmission after treatment.This scheme makes the whole playing procedure electronization of electroacoustic urheen, and has reduced the cost of electroacoustic urheen.
In electroacoustic urheen of the present invention, the audio files storage of each tone, in tone color memory storage, makes the front tonequality of audio processing of electroacoustic urheen obtain guarantee, thereby has avoided that urheen material is had to high request, has further reduced the cost of manufacture of electroacoustic urheen.
Beneficial effect: the present invention compared with prior art, has the following advantages:
The present invention contrasts existing electroacoustic urheen on market, has the advantages that electronic degree is high, cost of manufacture is low.Existing electroacoustic urheen on market, be all on the basis of wooden urheen, increase electroacoustic urheen effect device, as domestic Dunhuang 09A electroacoustic urheen and Roland EH-10A electroacoustic urheen etc., so the tonequality of the existing electroacoustic urheen on market still depends on the material of wooden urheen.The present invention's electronization degree height is not only embodied in audio and processes, playing information collection of the present invention, tone color storage are also all able to electronization, so do not need wooden urheen as carrier, thereby make the present invention require to reduce to material, thereby reduce costs, for amateurish urheen fan provides convenience.
Brief description of the drawings
Fig. 1 is the theory structure schematic diagram of electroacoustic urheen of the present invention.
Fig. 2 is the schematic appearance of electroacoustic urheen of the present invention.
Fig. 3 is the button slide block schematic diagram of electroacoustic urheen of the present invention.
Fig. 4 is the bow schematic diagram of electroacoustic urheen of the present invention.
Fig. 5 is the sound-effect processing equipment workflow diagram of electroacoustic urheen of the present invention.
Fig. 6 is the bow state detection module process flow diagram of electroacoustic urheen of the present invention.
Fig. 7 is the audio processing module process flow diagram of electroacoustic urheen of the present invention.
Embodiment
Be described in further details of the present invention below in conjunction with Figure of description and embodiment:
In the present embodiment, structure member is audio amplifier and the qin bar of imitative primary urheen, and control system is arranged in urheen audio amplifier, and control system connects and controls acoustics.Control system is made up of tone detecting device, tone color memory storage, loudness pick-up unit, bowing pick-up unit, sound-effect processing equipment and central controller, and as shown in Figure 1, wherein each device is connected with central controller principle schematic.
Hardware components is mainly divided into lower device:
1, tone detecting device
The tone of urheen is determined by a position and the fingering of player's left hand, as shown in Figure 2, on the qin bar of electroacoustic urheen, there are six Hall element A, B, C, D, E, F, for detection of player's a position information, there is a guide rail parallel with qin bar on Erhu music instrument bar side, on guide rail, have a slide block M, Fig. 3 is slide block M schematic diagram, and slide block M is for detection of user's fingering.The concrete steps of pitch detection are as follows:
(1) as shown in Figure 2, between Hall element A, B, be first position, between Hall element B, C, be second, between Hall element C, D, be the 3rd position, between Hall element D, E, be the 4th position, between Hall element E, F, be the 5th; As shown in Figure 3, button P1, P2, P3, P4, the respectively corresponding place of P5 are first to the 5th sound of position.In the time that the magnet T on slide block passes through any one Hall element, hall element output voltage produces level to be changed; In the time pressing any one button of sliding block, on slide block, corresponding button output level becomes low level.
(2) player is initialized as to first position position, if detect there is level and change in Hall element B output, and player place is second position position; Player is current is second position position, if detect, level variation occurs in Hall element C output, and player place is the 3rd position position, if detect, when level variation occurs in Hall element B output, player place is first position position; Player is current is the 3rd position position, if detect, level variation occurs in Hall element D output, and player place is the 4th position position, if detect, when level variation occurs in Hall element C output, player place is second position; The like, can confirm player position information.
(3), if player is button P1 by button, as shown in Figure 3, slide block output level Q1, Q2, Q3, Q4, Q5 are respectively low, high, high, high, high; If player is button P2 by button, slide block output level Q1, Q2, Q3, Q4, Q5 are respectively high and low, high, high, high; The rest may be inferred, can confirm player's fingering information.
The tone information of the Erhu playing that detection is obtained converts reference numeral to.If detect the Pn key that obtains the step-by-step of player institute and be set to m handle, urheen tone information reference numeral is " mn ".This numbered transmission is chosen to module to the audio frequency of central controller.
2, tone color memory storage
The audio file of each tone of urheen of tone color memory device stores high-quality, audio file to each tone is numbered, if the corresponding urheen m of this audio file handle, n sound, be numbered " mn ", the tone color memory module by numbered transmission to central controller.Tone color memory storage can be selected chip I SD4004.
3, bowing pick-up unit
The bowing of urheen is by the Determines of user's push-and-pull bow, as shown in Figure 4, acceleration transducer MPU6050 is arranged on bow, play brief acceleration sensor player and detect in real time the acceleration magnitude of bow, and the acceleration information of bow is transferred to the bowing detection module of central controller.
4, loudness pick-up unit
The loudness of urheen sounding draws the dynamics of string to determine by user, and loudness pick-up unit detects the pulling force of string inside by pressure transducer, thereby determines the dynamics that user draws string.As shown in Figure 2, electroacoustic urheen string is fixed on pressure transducer K, player is in the time drawing bow, bow can make the string of urheen produce deformation, thereby make string produce pulling force to pressure transducer K and cause pressure transducer K deformation, pressure transducer K is the audio processing module to central controller by the data transmission detecting, these data have reflected the Tensity size of string inside.Pressure transducer can be chosen the bridge type pressure transducer using HX711 chip as AD chip.
(5) sound-effect processing equipment
Sound-effect processing equipment reads the order of whether working, the data of Erhu playing loudness size and the order of whether opening filtering decrease of noise functions of the audio processing module output in central controller, and the standard pronunciation file of tone color memory storage output.If read the out-of-work order that audio processing module sends, stop externally exporting audio sound signal after treatment; If do not read the out-of-work order that audio processing module sends, the sound signal of the standard pronunciation file of tone color memory storage output is amplified according to the data of Erhu playing loudness size, as shown in table 1, if the data of Erhu playing loudness size are 3, the sound signal of standard pronunciation file is amplified to 3 times.If read the order of opening filtering decrease of noise functions that audio processing module sends, the sound signal after amplifying is carried out being transferred to acoustics after filtering noise reduction; If do not read audio processing module send the order of opening filtering decrease of noise functions, by through amplification after audio signal transmission to sound equipment.Particular flow sheet is shown in Fig. 5.Sound-effect processing equipment can adopt WM8731 chip.
(6) acoustics
Acoustics receives the audio urheen sound signal after treatment of sound-effect processing equipment output, and externally plays.
Software for Design part comprises with lower module:
(1) audio frequency is chosen module
Audio frequency is chosen module and is detected and obtain the numbering that urheen tone information is corresponding according to tone detecting device, transfers the standard pronunciation file of corresponding numbering from tone color memory storage, is transferred to sound-effect processing equipment.Audio frequency is chosen module and can in programmable logic device (PLD) (FPGA), be realized by Verilog language.
(2) loudness detection module
Loudness detection module receives the pulling force information of the string inside that loudness pick-up unit records, and pulling force information is converted to the loudness information that player plays is transferred to audio processing module.If pressure transducer is chosen the bridge type pressure transducer using HX711 chip as AD chip, the loudness size data corresponding relation of pulling force data and performance is as shown in table 1.Loudness detection module can be realized by Verilog language in programmable logic device (PLD) (FPGA).
The corresponding table of loudness data of table 1 pulling force data and performance
| Sensors A D chip HX711 output data (sexadecimal) | Loudness data |
| 000000～400000 | 0 |
| 400001～500000 | 0.5 |
| 500001～600000 | 1.0 |
| 600001～700000 | 1.5 |
| 700001～800000 | 2.0 |
| 800001～900000 | 2.5 |
| 900001～A00000 | 3.0 |
| A00001～FFFFFF | 3.5 |
(3) bowing detection module
The acceleration information of the bow that bowing detection module records according to bowing pick-up unit, carries out integration and obtains the speed data of bow to the acceleration information of bow.Judge the state of bow, if the speed of bow is non-vanishing, bow is in playing state; If the speed of bow is zero, bow is in non-playing state.Then by the status information transmission of bow to audio processing module.Particular flow sheet is shown in Fig. 6.Bowing detection module can be realized by Verilog language in programmable logic device (PLD) (FPGA).
(4) audio processing module
Audio processing module reads bowing detection module and detects the playing state information of the urheen obtaining and loudness detection module and detect the data of the Erhu playing loudness size obtaining.If read urheen in non-playing state, send out-of-work order to sound-effect processing equipment; If read urheen in playing state, by the data transmission of Erhu playing loudness size to sound-effect processing equipment.Audio processing module can also send according to user's demand the order of whether opening filtering decrease of noise functions to sound-effect processing equipment.Particular flow sheet is shown in Fig. 7.Audio processing module can realize by Verilog language in programmable logic device (PLD) (FPGA).
The workflow of electroacoustic urheen of the present invention is as follows:
User inputs tone information by left hand key; Transport bow input string pulling force size data and bow acceleration information by the right hand.Central processing unit calls respective standard sound file transfer to sound-effect processing equipment from tone color memory module according to tone information, central controller is processed string pulling force size data and bow acceleration information respectively and is converted to loudness information and bow status information, and is transferred to sound-effect processing equipment; Sound-effect processing equipment carries out, after audio processing, being transferred to sound equipment to standard pronunciation file according to loudness information and bow stick status information; Sound equipment is externally play.
Above-mentioned specific embodiment is only preferred embodiment of the present invention, is not used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim scope change and replace, all should serve as protection scope of the present invention.
Claims (5)
1. an electroacoustic urheen, comprise structure member, be arranged on tone detecting device, tone color memory storage, loudness pick-up unit, bowing pick-up unit, sound-effect processing equipment and central controller on described structure member, it is characterized in that, described central controller comprises that audio frequency chooses module, bowing detection module, loudness detection module and audio processing module;
Described tone detecting device is made up of button and Hall element, gather respectively user's fingering and hand position, confirm urheen tone information, and be transferred to audio frequency and choose module;
Described tone color memory storage is in order to store the standard pronunciation file of each tone of urheen;
String internal tension size when described loudness pick-up unit is gathered user and played by pressure transducer, and be transferred to loudness detection module;
Described bowing pick-up unit gathers the acceleration of the bow of user's performance by acceleration transducer, and is transferred to bowing detection module;
Described audio frequency is chosen module, detects the urheen tone information obtaining according to tone detecting device, transfers corresponding standard pronunciation file transfer to sound-effect processing equipment from tone color memory storage;
Described bowing detection module, detects the bow acceleration information obtaining according to bowing pick-up unit, judge whether user is drawing bow, thus determine urheen whether in playing state, and by the playing state communication of urheen to audio processing module;
Described loudness detection module, detects by loudness pick-up unit the string internal tension size data obtaining and is converted to Erhu playing loudness data, is then transferred to audio processing module;
Described audio processing module, according to the playing state information of urheen with play loudness data control sound-effect processing equipment: when urheen is during in non-playing state, send out-of-work order to sound-effect processing equipment; When urheen is during in playing state, send the order of starting working to sound-effect processing equipment, and to its transmission Erhu playing loudness data;
Described sound-effect processing equipment, the out-of-work order sending according to audio processing module, stops external output audio signal; The order of starting working and the Erhu playing loudness data that send according to audio processing module, amplify backward external transmission by the sound signal of the standard pronunciation file of tone color memory storage output according to Erhu playing loudness data.
2. electroacoustic urheen according to claim 1, is characterized in that, this urheen also comprises acoustics, and described sound-effect processing equipment is transferred to acoustics after sound signal is amplified and externally plays.
3. electroacoustic urheen according to claim 1, is characterized in that, in described tone color memory storage, the standard pronunciation file of each tone is stored with coding form; Described tone detecting device is confirmed urheen tone information according to same coding rule and is given coding, then coding transmission chosen to module to audio frequency; Described audio frequency is chosen module and from tone color memory storage, is transferred standard pronunciation file according to the coding receiving.
4. according to the electroacoustic urheen described in claim 1,2 or 3, it is characterized in that, described bowing detection module determine urheen whether the concrete grammar in playing state be: the speed data that is bow by the acceleration information Integral Transformation of bow, if the speed of bow is non-vanishing, judge that urheen is in playing state; Otherwise urheen is in non-playing state.
5. according to the electroacoustic urheen described in claim 1,2 or 3, it is characterized in that, described audio processing module is also carried out the control of filtering noise reduction according to user's demand to sound-effect processing equipment: in the time that user need to carry out filtering noise reduction process to sound signal, send the order of opening filtering decrease of noise functions to sound-effect processing equipment; In the time that user does not need sound signal to carry out filtering noise reduction, send the order of closing filtering decrease of noise functions to sound-effect processing equipment;
When described sound-effect processing equipment receives the order of opening filtering decrease of noise functions, after sound signal is amplified, then carry out the backward outer transmission of filtering noise reduction; While receiving the order of closing filtering decrease of noise functions, directly outwards transmission after sound signal being amplified.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410176082.5A CN103928021B (en) | 2014-04-28 | 2014-04-28 | A kind of electroacoustic urheen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410176082.5A CN103928021B (en) | 2014-04-28 | 2014-04-28 | A kind of electroacoustic urheen |
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| CN103928021A true CN103928021A (en) | 2014-07-16 |
| CN103928021B CN103928021B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410176082.5A Expired - Fee Related CN103928021B (en) | 2014-04-28 | 2014-04-28 | A kind of electroacoustic urheen |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106875931A (en) * | 2017-04-07 | 2017-06-20 | 壹零（北京）乐器有限公司 | Sound effect control device and intelligent musical instrument |
| CN107945618A (en) * | 2018-01-18 | 2018-04-20 | 牡丹江师范学院 | A kind of urheen fingering training device |
| WO2019213911A1 (en) * | 2018-05-10 | 2019-11-14 | 深圳配天智能技术研究院有限公司 | Simulation device for bowed string instrument |
| CN112216260A (en) * | 2020-10-12 | 2021-01-12 | 中北大学 | Electronic erhu system |
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| CN202601180U (en) * | 2012-05-30 | 2012-12-12 | 邱文 | Electronic sound pick-up for urheen |
| CN202796035U (en) * | 2012-07-17 | 2013-03-13 | 徐海涛 | Electric urheen sensor device |
| JP5232532B2 (en) * | 2008-05-27 | 2013-07-10 | ローランド株式会社 | controller |
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| CN86103647A (en) * | 1986-04-24 | 1987-10-21 | 浙江省平阳县工业科学技术开发中心 | Electronic Hu Qin |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106875931A (en) * | 2017-04-07 | 2017-06-20 | 壹零（北京）乐器有限公司 | Sound effect control device and intelligent musical instrument |
| CN107945618A (en) * | 2018-01-18 | 2018-04-20 | 牡丹江师范学院 | A kind of urheen fingering training device |
| WO2019213911A1 (en) * | 2018-05-10 | 2019-11-14 | 深圳配天智能技术研究院有限公司 | Simulation device for bowed string instrument |
| CN111684519A (en) * | 2018-05-10 | 2020-09-18 | 深圳配天智能技术研究院有限公司 | Simulation device for bowed stringed instrument |
| CN111684519B (en) * | 2018-05-10 | 2024-01-12 | 深圳配天机器人技术有限公司 | Simulation device for bowstring musical instrument |
| CN112216260A (en) * | 2020-10-12 | 2021-01-12 | 中北大学 | Electronic erhu system |
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| CN103928021B (en) | 2016-08-17 |
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