CN103150940B - A kind of keyboard instrument teaching system and teaching method - Google Patents
A kind of keyboard instrument teaching system and teaching method Download PDFInfo
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Abstract
The invention provides a kind of keyboard instrument teaching system and teaching method, comprise information acquisition unit, signal processing unit and information output unit.System of the present invention has multiple-working mode, comprises the optimum fingering pattern of prompting, revises fingering pattern, evaluation model, teaching pattern.Multiple-working mode is selected for user, has prompting fingering, corrects fingering, evaluates, the function of teaching demonstration.System of the present invention is widely used in various keyboard kind musical instrument, comprises the keyboard instruments such as piano, mellotron, accordion, pipe organ.Native system has powerful tutorial function, and using method is simple, flexible, has boundless application prospect.
Description
Technical field
The present invention relates to musical instrument teach technique, be specifically related to a kind of keyboard instrument teaching system and teaching method.
Background technology
Musical instrument is liked by numerous people is popular, but for new hand, musical instrument plays training spended time length and somewhat expensive; For teacher, traditional teaching pattern seems inefficiency, and therefore the exploitation of intelligent teaching system is necessary.US Patent No. 20120064498A1 reports a kind of based on computer implemented interactively musical instrument teaching system, it is made up of musical instrument, interface, computing machine, need inside musical instrument to embed visual cues device, computing machine is by providing the control signal of teaching while software receipt interface signal, control the visual cues device inside musical instrument, the visual signal prompt of performance hint for user, to reach the function of teaching.But the musical instrument teaching system that this invention relates to needs to add visual cues device, such as guitar, need to increase corresponding visual cues device at each root string of guitar, therefore needing to transform musical instrument itself to realize interactively teaching, cannot apply to widely in existing musical instrument.
US Patent No. 2005005761A1 reports a kind of system of teaching music, it achieve the visual instruction that musical instrument is played, but in the process realized, pilot lamp is positioned at the place near musical instrument, as shown in Fig. 1 of the Figure of description of patent, pilot lamp is positioned at the top of keys of musical instrument.Because the indicator signal of vision is not presented on the button of musical instrument exactly, play in process and need artificially signal designation to be carried out corresponding with corresponding button, add the learning difficulty of player.In addition, such realization also needs a large amount of pilot lamp to be embedded into musical instrument surface, is difficult to apply to widely in existing musical instrument.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of keyboard instrument teaching system and teaching method are provided.
The present invention adopts following technical scheme to realize:
A kind of keyboard instrument teaching system, is characterized in that: described system comprises information acquisition unit, signal processing unit and information output unit.
The fingering when basic functional principle of system of the present invention is information acquisition unit collection user's shoegaze and the operational order of user, the information that signal processing unit processes information acquisition unit collects, the signal that information output unit Received signal strength processing unit sends, thus export corresponding information.
The information collected for gathering external information, and is sent to signal processing unit with aspect by described information acquisition unit.Described external information comprises music information, the spatial coordinated information of human body, pressure information, acoustic information.
The spatial coordinated information of described human body is the volume coordinate of human body.Described volume coordinate is the spatial coordinate (x, y, z) of 3D or the planimetric coordinates (x, y) of 2D, and described human body refers to the human organ playing keyboard instrument, comprises finger, toe etc.This information both may be used for analyzing fingering can also as the space vector of user; Such as, people sees projection device interface, space out, and system by identifying that human body is in the position at interface, space, thus obtains command information; Such as, people sees that projection device is to the interface on wall, interface has a button, and finger point gets on, and system identification is positioned on this button to finger, then system makes corresponding behavior for the operation that this button is corresponding.
The pressure information of described collection is the dynamics size of user's button.
Described acoustic information is the phonetic order of user; Such as, people sounds, and tells that systematic evaluation arrives certain mode of operation, so the sound of system identification people, is switched to corresponding mode of operation;
The signal that described signal processing unit sends for receiving information acquisition unit, and process, the signal after process is sent to signal output unit;
Described information output unit is used for the signal that Received signal strength processing unit sends, and signal is converted to corresponding information.Described information comprises visual information, pressure information, acoustic information.
The visual information of described prompting is the picture cues information of system; The picture cues information of described system comprises project out space community face and the indication information that directly projects out on key.Such as, the space community face that projects out is on wall, and interface, space demonstrates fingering prompting interface, evaluate interface, report an error interface, operation interface etc.Such as project the laser of different colours out on key, prompting fingering.
The acoustic information of described prompting is the information of voice prompt of system; The information of voice prompt of described system comprises the duty of current system and the evaluation to user.Such as, when user's shoegaze, human body servicing unit is sounded, and current volume size is described, the duties such as mode of operation; After user has played, human body servicing unit is sounded, and evaluates the height that user plays level.
The pressure information of described prompting is the pressure that human body servicing unit feeds back to human body; Such as, when user is by button or the button to mistake and when pointing out fingering inconsistent, apply an acting force to human body, obstruction user button, user knows that button is wrong.
Described keyboard instrument be have stationary arrangement order key and each key has the musical instrument of fixing pitch.
Described keyboard instrument comprises piano, pipe organ, accordion or mellotron.
Described information acquisition unit can comprise following three kinds of building forms:
(1) music harvester and image collecting device;
(2) music harvester and human body servicing unit;
(3) music harvester, image collecting device and human body servicing unit.
Described information output unit can comprise following two kinds of building forms:
(1) projection arrangement;
(2) projection arrangement and human body servicing unit.
The music information collected, for gathering music information, is converted to signal by described music harvester, and this signal is sent to signal processing unit;
Described music harvester to gather music information, and the music information collected is converted to signal, and this signal is sent to the device of signal processing unit; Described music harvester possesses camera function, sound-recording function, scan function, communication function, includes but not limited to desktop computer, notebook computer or mobile intelligent terminal.
The equipment possessing camera function can be Digital Video, digital camera; Having sound-recording function equipment can be recording pen, microphone; The equipment with scan function can be scanner, scanner; The equipment with communication function can be wireless aps, wireless bridge, wireless network card, antenna.
Described music information includes but not limited to that paper score, electronic music etc. can by the information of visual identity, real-time music, voice, live concerts, TV programme recording etc. can by the information of Auditory identification, and MIDI, MP3, WAV etc. can by the standard audio format files of signal processing unit.
Described image collecting device is used for human body image information to be converted to signal, and is sent to signal processing unit, includes but not limited to have the desktop computer of image collecting function, notebook computer or mobile intelligent terminal.
Described human body servicing unit can gather the spatial coordinated information of human body, pressure information, acoustic information above-mentioned information is converted to signal is sent to signal processing unit as required; Can also the signal that sends of Received signal strength processing unit be converted into acoustic information, the pressure information of feedback.
Described human body servicing unit can comprise information acquisition module and/or message output module.When human body servicing unit belongs to information acquisition unit, human body servicing unit comprises information acquisition module; When human body servicing unit belongs to information output unit, human body servicing unit comprises message output module; When human body servicing unit had not only belonged to information acquisition unit but also belonged to information output unit, human body servicing unit had comprised information acquisition module and message output module.
Described information acquisition module is the module that physical message can be converted to signal, includes but not limited to gyro sensor, pressure transducer, sound transducer etc.; Described message output module is the module that signal can be converted to physical message, includes but not limited to sound generator and pressure generator etc.Described gyro sensor is the device spatial coordinated information of human body being converted to electric signal; Described pressure transducer is device pressure information being converted to electric signal; Described sound transducer is device acoustic information being converted to electric signal; Described tactile generator is the device converting electrical signals to pressure; Sound generator is the device converting electrical signals to acoustic information.
Described human body servicing unit pattern can be shell-like thing (as gloves, footmuff, headgear etc.), pad (as touch pads, wrist pad etc.), the paster etc. that forms seal ring or half seal ring ribbon (as hand strap, tape, waistband, wrist strap etc.), can be affixed on skin surface.
Such as, ghost gloves can gather the pressure information of human hands and ancon, and can feed back to the corresponding pressure of people.
Piano gloves (Piano Hands) have sounding effect, have on it and knock in any plane, and this sound converting piano to that knocks then can play back by hand.
Described projection arrangement is used for the signal of Received signal strength processing unit transmission and is converted into visual information.
Described projection arrangement is a kind of a kind of device that can convert electrical signals to the visual information projected.Described visual information can be 2D visual information, 3D visual information or laser.Described projection arrangement comprises laser, DLP projector, 3D projector, 2D projector, at least one the desktop computer with projecting function, notebook computer or mobile intelligent terminal.Described mobile intelligent terminal is of portable form intelligent terminal, includes but not limited to various smart mobile phone, panel computer (as iPad etc.), palm PC, intelligent handheld device.
The signal that described signal processing unit sends for receiving information acquisition unit, and process, the signal after process is sent to signal output unit;
Described signal processing unit be can carry out calculating, analyze, store, equipment that signal transacting and signal send, described signal processing unit includes but not limited to computing machine, server, mobile intelligent terminal.
Described mobile intelligent terminal to gather external information, can carry out calculating, treatment and analysis, and the portable set of information transmission can be carried out between different terminals, include but not limited to smart mobile phone, PDA, notebook computer, net book, panel computer, palm PC, intelligent handheld device, Pocket PC, Tablet PC.
System of the present invention can provide multiple-working mode, comprises the optimum fingering pattern of prompting, revises fingering pattern, evaluation model, teaching pattern.
The optimum fingering pattern of described prompting refer to work in this mode play in process, system prompt plays the optimum fingering of keyboard instrument;
Described correction fingering pattern refer to work in this mode play in process, the mistake of system prompt piano, and the playing way of correcting a mistake;
Described evaluation model refer to work in this mode play in process, after the performance situation of system Real-Time Evaluation user and/or work have played a first song in this mode, system has revalued the performance situation of user;
Described teaching pattern is by imparting knowledge to students in the signal processing unit built-in tutoring system in inside and/or by music harvester importing tutoring system, by any one in the optimum fingering pattern of prompting, correction fingering pattern and evaluation model or combination in any in the process of playing, user is imparted knowledge to students.
Keyboard instrument teaching system provided by the invention can realize the switching to mode of operation, such as, what current teaching method adopted is the optimum fingering pattern of prompting, user is by sending operational order, through signal processing unit processes, change mode of operation for revising fingering pattern, thus realize the switching of mode of operation.
The present invention also provides the teaching method of keyboard instrument teaching system, it is characterized in that comprising the following steps:
Information Monitoring: information acquisition unit Information Monitoring, and the information collected is sent to signal processing unit with aspect.
Signal transacting: signal processing unit receives the signal that information acquisition unit sends, row relax of going forward side by side, is sent to signal output unit by the signal after process;
Feedback information: the signal that Received signal strength processing unit sends, and signal is converted to corresponding information.
Based on above-mentioned 3 basic steps, carrying out combination according to the logical relation of work can realize multiple-working mode.The teaching method of present system has multiple-working mode, comprises the optimum fingering pattern of prompting, correction fingering pattern, law enforcement evaluation model and teaching pattern.
The optimum fingering pattern of described prompting comprises the following steps:
(1) arrange: the operational order gathering user, the signal that process operational order is corresponding, feedback operation information;
(2) Acquire and process of music information: gather music information, the signal that process music information is corresponding, provides the optimum fingering information of initial prompting
(3) periodic duty: circulation performs the step of Information Monitoring, signal transacting, feedback information successively;
Particularly, the setting up procedure of described step (1) can comprise the following steps:
Gather the operational order of user: user sends space vector and/or phonetic order, and information process unit gathers above-mentioned instruction corresponding informance, is sent to signal processing unit with aspect.
The signal that process operational order is corresponding: signal processing unit Received signal strength also processes, and sends treated signal to information output unit.
Feedback operation information: information output unit Received signal strength and the feedback information corresponding to mode of operation.
Particularly, the Acquire and process process of the music information of described step (2) can comprise the following steps:
Gather music information: the music harvester in information process unit gathers music information, music information is converted to signal, is sent to signal processing unit.
The signal that process music information is corresponding: signal processing unit receives the signal that music harvester sends, by processing this signal, draw the optimum play fingering for this music information, and this fingering is stored in signal processing unit according to playing sequential packet with the form of program coding; The program coding of first group is sent to information output unit in the mode of signal.
Provide the optimum fingering information of initial prompting: information output unit Received signal strength, export the optimum fingering information of prompting.
Such as, projection arrangement Received signal strength is translated into the 3D visual information of projection, indicates key corresponding to this group coding with different colours, is the optimum fingering of prompting; Such as, human body servicing unit Received signal strength is translated into acoustic information, directly points out user with what fingering button; Human body servicing unit Received signal strength is translated into pressure information, applies pressure hinder user press and point out inconsistent button to finger; Such as, projection arrangement Received signal strength is translated into the laser of projection, indicates key corresponding to this group coding with different colours, is the optimum fingering of prompting;
Particularly, the On The Cycle Working Process of described step (3) can comprise the following steps:
Information Monitoring: user plays keyboard instrument according to the optimum fingering of prompting, information acquisition unit gathers spatial coordinated information and/or the pressure information of human body when user plays keyboard instrument, and this information is input to signal processing unit with aspect.
If user sends space vector and/or phonetic order in this cyclic process, information acquisition unit can gather this instruction equally, and with aspect to signal processing unit, and turn back in the setting steps of step (1).
Signal transacting: signal processing unit receives the signal that information acquisition unit sends, and processes, analyze and then draw the fingering that user is current further to this signal; Then from program coding, obtain the optimum fingering of current prompt, the optimum fingering of actual key information current for user and current prompt compared, and judges according to comparison result:
If the current button of user is consistent with the optimum fingering of current prompt, then points out next group fingering, next program coding organized is sent to information output unit in the mode of signal; And transmit an acknowledgment signal to information output unit, information output unit receives this signal, corresponding information can be sent and inform that user plays correctly.
If the optimum fingering of the button that user is current and current prompt is inconsistent, then still point out current group of fingering, keep the program coding of current group to be sent to information output unit in the mode of signal; And send error signal to information output unit, information output unit receives this signal, corresponding information can be sent and inform that the optimum fingering of which button that user is current and current prompt is inconsistent.
Feedback information: the signal that information output unit Received signal strength processing unit sends, and be converted into corresponding information and export.
Above-mentioned three steps circulate successively and perform thus the function of the optimum fingering of realization prompting.
Fingering has two physical quantitys to determine, one is the position (x, y) of finger presses, and another is the dynamics F of finger presses.
As preferably, analyze in signal transacting step in described step (3) and show that the method for the current fingering of user is: with the spatial coordinated information (x of the human body collected, y, z) based on, the acquisition time interval of combining information collecting unit
calculate, first order derivative on time t or pluriderivative are done to coordinate figure, and with above-mentioned coordinate figure, and based on first order derivative or pluriderivative, carry out processing the planimetric coordinates information (x drawing finger presses, y) and the force value F of finger presses, draw by analyzing corresponding physical quantity the fingering that user is current.
Show that the method for the current fingering of user is as analyzing in the signal transacting step in preferably described step (3): with the spatial coordinated information (x of human body, y, z) the planimetric coordinates information (x, y) calculating finger presses is carried out based on; The force value F of finger presses is directly drawn based on the pressure information collected.
Described correction fingering pattern comprises the following steps:
(1) arrange: the operational order gathering user, the signal that process operational order is corresponding, feedback operation information;
(2) Acquire and process of music information: gather music information, the signal that process music information is corresponding.
(3) periodic duty: circulation performs the step of Information Monitoring, signal transacting, feedback information successively;
Gather the operational order of user: user sends space vector and/or phonetic order, and information process unit gathers above-mentioned instruction corresponding informance, is sent to signal processing unit with aspect.
The signal that process operational order is corresponding: signal processing unit Received signal strength also processes, and sends treated signal to information output unit.
Feedback operation information: information output unit Received signal strength and the feedback information corresponding to mode of operation.
Particularly, the Acquire and process process of the music information of described step (2) can comprise the following steps:
Gather music information: the music harvester in information process unit gathers music information, music information is converted to signal, is sent to signal processing unit.
The signal that process music information is corresponding: signal processing unit receives the signal that music harvester sends, by processing this signal, this music information is converted to standard music score, and this standard music score is stored in signal processing unit according to playing sequential packet with the form of program coding; Using the comparison reference of program coding corresponding for first group of standard music score as user's button.
Particularly, the On The Cycle Working Process of described step (3) can comprise the following steps:
Information Monitoring: user plays keyboard instrument, information acquisition unit gathers spatial coordinated information and/or the pressure information of human body when user plays keyboard instrument, and this information is input to signal processing unit with aspect.
If user sends space vector and/or phonetic order in this cyclic process, information acquisition unit can gather this instruction equally, and with aspect to signal processing unit, and turn back in the setting steps of step (1).
Signal transacting: signal processing unit receives the signal that information acquisition unit sends, and processes, analyze and then draw the fingering that user is current further to this signal; Then from program coding, obtain current standard music score, actual key information current for user and current standard music score compared, and judges according to comparison result:
If the current button of user is consistent with current standard music score, then switch the comparison reference of program coding corresponding to next group standard music score as next group button of user; And transmit an acknowledgment signal to information output unit, information output unit receives this signal, corresponding information can be sent and inform that user plays correctly.
If the button that user is current and current standard music score inconsistent, then still using program coding corresponding to current group of standard music score as the comparison reference of next group button of user; And send error signal to information output unit, information output unit receives this signal, corresponding information can be sent and inform which key bullet mistake of user and correct key position.
Feedback information: the signal that information output unit Received signal strength processing unit sends, and be converted into corresponding information and export.
Above-mentioned three steps circulate successively and perform thus the function of realization correction fingering.
Described evaluation model comprises the following steps:
(1) arrange: the operational order gathering user, the signal that process operational order is corresponding, feedback operation information;
(2) Acquire and process of music information: gather music information, the signal that process music information is corresponding.
(3) periodic duty: circulation performs the step of Information Monitoring, signal transacting, feedback information successively;
Gather the operational order of user: user sends space vector and/or phonetic order, and information process unit gathers above-mentioned instruction corresponding informance, is sent to signal processing unit with aspect.
The signal that process operational order is corresponding: signal processing unit Received signal strength also processes, and sends treated signal to information output unit.
Feedback operation information: information output unit Received signal strength and the feedback information corresponding to mode of operation.
Particularly, the Acquire and process process of the music information of described step (2) can comprise the following steps:
Gather music information: the music harvester in information process unit gathers music information, music information is converted to signal, is sent to signal processing unit.
The signal that process music information is corresponding: signal processing unit receives the signal that music harvester sends, by processing this signal, this music information is converted to standard music score, and this standard music score is stored in signal processing unit according to playing sequential packet with the form of program coding; Using the comparison reference of program coding corresponding for first group of standard music score as user's button.
Particularly, the On The Cycle Working Process of described step (3) can comprise the following steps:
Information Monitoring: user plays keyboard instrument, information acquisition unit gathers spatial coordinated information and/or the pressure information of human body when user plays keyboard instrument, and this information is input to signal processing unit with aspect.
If user sends space vector and/or phonetic order in this cyclic process, information acquisition unit can gather this instruction equally, and with aspect to signal processing unit, and turn back in the setting steps of step (1).
Signal transacting: signal processing unit receives the signal that information acquisition unit sends, and processes, analyze and then draw the fingering that user is current further and this fingering is stored in signal processing unit in the mode of program coding this signal; Switch the comparison reference of program coding corresponding to next group standard music score as next group button of user; Then from program coding, obtain current standard music score, actual key information current for user and current standard music score are compared, make real-time evaluation in conjunction with the evaluation system being stored in signal processing unit inside, send corresponding evaluation information to information output unit.
If after user has played current title, the program coding that namely the standard music score of reference is corresponding as a comparison has been switched to latter end.Program coding corresponding with the play fingering of the user's current title being stored in signal processing unit for program coding corresponding for current title standard music score is compared, make the complete evaluation of user being played to current title in conjunction with the evaluation system being stored in signal processing unit inside, send corresponding evaluation information to information output unit.
Feedback information: the signal that information output unit Received signal strength processing unit sends, and be converted into corresponding information and export.
Above-mentioned three steps circulate successively and perform thus the function of realization evaluation fingering.
Described teaching pattern is by imparting knowledge to students in the signal processing unit built-in tutoring system in inside and/or by music harvester importing tutoring system, by any one in the optimum fingering pattern of prompting, correction fingering pattern and evaluation model or combination in any in the process of playing, user is imparted knowledge to students.In described tutoring system, user can select some ready-made music score to practise, and piano also can be allowed automatically to provide suitable exercise music score according to user's present level.To point out optimum fingering pattern to indicate user or to carry out error correction to revise fingering pattern to user in the process of playing.
Method of the present invention can realize the switching to mode of operation, and such as, what current teaching method adopted is the optimum fingering pattern of prompting, user is by sending operational order, through signal processing unit processes, change mode of operation for revising fingering pattern, thus realize the switching of mode of operation.Switching in step (1) setting steps of mode of operation completes.
The invention has the beneficial effects as follows:
1. the present invention gathers music signal in several ways, as passed through scanning music score, recording, shooting or adopting the mode of existing standard audio format file to gather music signal;
2. system of the present invention can be applicable to various keyboard kind musical instrument, applied range;
3. system bulk of the present invention is little, is easy to carry, and does not need to be arranged on keyboard instrument, can not change this body structure of keyboard instrument, affect voice effect;
4. method provided by the invention is simple, easily operates, can meet the needs of different levels user, have good applicability, be beneficial to universal;
The invention provides multiple-working mode, there is the function of prompting, teaching, error correction, evaluation, be conducive to the performance level promoting user, be applicable to the user of different levels, have broad application prospects.
Accompanying drawing explanation
Fig. 1 is the block diagram of system of keyboard instrument teaching system of the present invention;
Fig. 2 is the structure composition schematic diagram of keyboard instrument teaching system of the present invention;
Fig. 3 is the block diagram of system of embodiment 1;
Fig. 4 is camera head Information Monitoring schematic diagram of the present invention;
Fig. 5 is the optimum fingering pattern workflow diagram of prompting of the present invention;
Fig. 6 is correction fingering pattern workflow diagram of the present invention;
Fig. 7 is evaluation model workflow diagram of the present invention.；
Fig. 8 is the block diagram of system of embodiment 2;
Fig. 9 is the block diagram of system of embodiment 3.
Wherein: 1 is image collecting device, 2 is human body servicing unit, and 3 is projection arrangement, and 4 is signal processing unit, and 5 is music harvester, and 6 is piano, and 7 is key, and 8 is fingers.
Embodiment
Describe the present invention in detail according to drawings and embodiments below.
As depicted in figs. 1 and 2, keyboard instrument teaching system of the present invention comprises information acquisition unit, signal processing unit and information output unit.
The information collected for gathering external information, and is sent to signal processing unit with aspect by described information acquisition unit.Described external information comprises music information, the spatial coordinated information of human body, pressure information, acoustic information.
The signal that described signal processing unit sends for receiving information acquisition unit, and process, the signal after process is sent to signal output unit;
Described information output unit is used for the signal that Received signal strength processing unit sends, and signal is converted to corresponding information.Described information comprises visual information, pressure information, acoustic information.
Described information acquisition unit composition has following three kinds:
(1) music harvester and image collecting device;
(2) music harvester and human body servicing unit;
(3) music harvester, image collecting device and human body servicing unit;
Described information output unit composition has following two kinds:
(1) projection arrangement;
(2) projection arrangement, human body servicing unit;
Keyboard instrument teaching system of the present invention comprises following several building form:
Embodiment 1
The block diagram of system of the present invention as shown in Figure 3.
For with finger piano, by the mode identification fingering of image with receive operational order, the mode of picture of publishing picture to project carries out teaching, can use following scheme:
System of the present invention comprises information acquisition unit, signal processing unit and information output unit.
Information acquisition unit is made up of music harvester and image collecting device.Music harvester is for gathering music information, and image collecting device is for gathering the spatial coordinated information of human body.
The schematic diagram of image acquisition device information as shown in Figure 4.
Information output unit is projection arrangement.Projection arrangement is for exporting the visual information of prompting.
Described information acquisition unit gathers the spatial coordinated information of music information, human body, and described information output unit exports the visual information of prompting.
During system works projection arrangement directly by the image projection of operation interface on wall, time user needs selection or the switching carrying out mode of operation, can directly at the enterprising line operate of the operation interface projected, transmit operation instruction, to system, realizes selection or the switching of mode of operation.
With regard to the optimum fingering of described prompting, system of the present invention can realize following effect:
User is in the process of shoegaze, and system is pointed out according to song that user plays, and is specially the optimum fingering information of display reminding on the image that projects out.The play fingering of simultaneity factor identification user, judges whether consistent with pointing out optimum fingering, and according to the corresponding information of judgement prompting on the image projected.
The optimum fingering pattern workflow diagram of prompting of the present invention as shown in Figure 5;
The optimum fingering pattern of described prompting comprises the following steps:
(1) arrange: the operational order gathering user, the signal that process operational order is corresponding, feedback operation information;
(2) Acquire and process of music information: gather music information, the signal that process music information is corresponding, provides the optimum fingering information of initial prompting
(3) periodic duty: circulation performs the step of Information Monitoring, signal transacting, feedback information successively;
Particularly, the setting up procedure of described step (1) can comprise the following steps:
Gather the operational order of user: user sends space vector, and information process unit gathers above-mentioned instruction corresponding informance, is sent to signal processing unit with aspect.
The signal that process operational order is corresponding: signal processing unit Received signal strength also processes, and sends treated signal to information output unit.
Feedback operation information: information output unit Received signal strength and the feedback information corresponding to mode of operation.
Particularly, the Acquire and process process of the music information of described step (2) can comprise the following steps:
Gather music information: the music harvester in information process unit gathers music information, music information is converted to signal, is sent to signal processing unit.
The signal that process music information is corresponding: signal processing unit receives the signal that music harvester sends, by processing this signal, draw the optimum play fingering for this music information, and this fingering is stored in signal processing unit according to playing sequential packet with the form of program coding; The program coding of first group is sent to information output unit in the mode of signal.
Provide the optimum fingering information of initial prompting: information output unit Received signal strength, export the optimum fingering information of prompting.
Particularly, the On The Cycle Working Process of described step (3) can comprise the following steps:
Information Monitoring: user plays keyboard instrument according to the optimum fingering of prompting, information acquisition unit gathers the spatial coordinated information of human body when user plays keyboard instrument, and this information is input to signal processing unit with aspect.
If user sends space vector in this cyclic process, information acquisition unit can gather this instruction equally, and with aspect to signal processing unit, and turn back in the setting steps of step (1).
Signal transacting: signal processing unit receives the signal that information acquisition unit sends, and processes, analyze and then draw the fingering that user is current further to this signal; Then from program coding, obtain the optimum fingering of current prompt, the optimum fingering of actual key information current for user and current prompt compared, and judges according to comparison result:
If the current button of user is consistent with the optimum fingering of current prompt, then points out next group fingering, next program coding organized is sent to information output unit in the mode of signal; And transmit an acknowledgment signal to information output unit, information output unit receives this signal, corresponding information can be sent and inform that user plays correctly.
If the optimum fingering of the button that user is current and current prompt is inconsistent, then still point out current group of fingering, keep the program coding of current group to be sent to information output unit in the mode of signal; And send error signal to information output unit, information output unit receives this signal, corresponding information can be sent and inform that the optimum fingering of which button that user is current and current prompt is inconsistent.
Feedback information: the signal that information output unit Received signal strength processing unit sends, and be converted into corresponding information and export.
Above-mentioned three steps circulate successively and perform thus the function of the optimum fingering of realization prompting.
Fingering has two physical quantitys to determine, one is the position (x, y) of finger presses, and another is the dynamics F of finger presses.
Analyze in signal transacting step in described step (3) and show that the method for the current fingering of user is: based on the spatial coordinated information of the human body collected (x, y, z), the acquisition time interval of combining information collecting unit
calculate, first order derivative on time t or pluriderivative are done to coordinate figure, and with above-mentioned coordinate figure, and based on first order derivative or pluriderivative, carry out processing the planimetric coordinates information (x drawing finger presses, y) and the force value F of finger presses, draw by analyzing corresponding physical quantity the fingering that user is current.
Particularly, signal processing unit is according to the height coordinate z in the spatial coordinated information physical quantity of finger and acquisition time interval
calculate the force value F of finger presses.First the pressing speed of current time finger is calculated
, utilize formula
can be regarded as out the pressing speed of finger
, wherein,
represent the present level coordinate figure of finger,
represent the height coordinate value of the previous moment of finger.
Afterwards according to finger presses speed
and acquisition time interval
calculate the force value F of finger presses.Utilize formula
, F=ma can be regarded as out the force value F of finger presses.Wherein
represent the current press speed of finger,
represent the pressing speed of the previous moment of finger, a represents the pressing acceleration that finger is current, and m represents the quality of key, and m presets according to the quality of actual key.
The planimetric coordinates information (x, y) of finger presses can directly obtain.
With regard to described correction fingering pattern, system of the present invention can realize following effect:
User, in the process of shoegaze, knows the play fingering of system other user, and this fingering and song that user plays is compared, and judges whether to play wrong, and points out corresponding information on the image projected according to judging.
Correction fingering pattern workflow diagram of the present invention as shown in Figure 6;
Described correction fingering pattern comprises the following steps:
(1) arrange: the operational order gathering user, the signal that process operational order is corresponding, feedback operation information;
(2) Acquire and process of music information: gather music information, the signal that process music information is corresponding.
(3) periodic duty: circulation performs the step of Information Monitoring, signal transacting, feedback information successively;
Gather the operational order of user: user sends space vector, and information process unit gathers above-mentioned instruction corresponding informance, is sent to signal processing unit with aspect.
The signal that process operational order is corresponding: signal processing unit Received signal strength also processes, and sends treated signal to information output unit.
Feedback operation information: information output unit Received signal strength and the feedback information corresponding to mode of operation.
Particularly, the Acquire and process process of the music information of described step (2) can comprise the following steps:
Gather music information: the music harvester in information process unit gathers music information, music information is converted to signal, is sent to signal processing unit.
The signal that process music information is corresponding: signal processing unit receives the signal that music harvester sends, by processing this signal, this music information is converted to standard music score, and this standard music score is stored in signal processing unit according to playing sequential packet with the form of program coding; Using the comparison reference of program coding corresponding for first group of standard music score as user's button.
Particularly, the On The Cycle Working Process of described step (3) can comprise the following steps:
Information Monitoring: user plays keyboard instrument, information acquisition unit gathers the spatial coordinated information of human body when user plays keyboard instrument, and this information is input to signal processing unit with aspect.
If user sends space vector and/or phonetic order in this cyclic process, information acquisition unit can gather this instruction equally, and with aspect to signal processing unit, and turn back in the setting steps of step (1).
Signal transacting: signal processing unit receives the signal that information acquisition unit sends, and processes, analyze and then draw the fingering that user is current further to this signal; Then from program coding, obtain current standard music score, actual key information current for user and current standard music score compared, and judges according to comparison result:
If the current button of user is consistent with current standard music score, then switch the comparison reference of program coding corresponding to next group standard music score as next group button of user; And transmit an acknowledgment signal to information output unit, information output unit receives this signal, corresponding information can be sent and inform that user plays correctly.
If the button that user is current and current standard music score inconsistent, then still using program coding corresponding to current group of standard music score as the comparison reference of next group button of user; And send error signal to information output unit, information output unit receives this signal, corresponding information can be sent and inform which key bullet mistake of user and correct key position.
Feedback information: the signal that information output unit Received signal strength processing unit sends, and be converted into corresponding information and export.
Above-mentioned three steps circulate successively and perform thus the function of realization correction fingering.
With regard to described evaluation fingering pattern, system of the present invention can realize following effect:
User is in the process of shoegaze, the play fingering of system identification user, this fingering and song that user plays are compared, and make real-time evaluation, by the information of evaluation on the image projected, after user's current title is played, system makes total evaluation, by the information of evaluation on the image projected.
Evaluation model workflow diagram of the present invention as shown in Figure 7;
Described evaluation model comprises the following steps:
(1) arrange: the operational order gathering user, the signal that process operational order is corresponding, feedback operation information;
(2) Acquire and process of music information: gather music information, the signal that process music information is corresponding.
(3) periodic duty: circulation performs the step of Information Monitoring, signal transacting, feedback information successively;
Gather the operational order of user: user sends space vector and/or phonetic order, and information process unit gathers above-mentioned instruction corresponding informance, is sent to signal processing unit with aspect.
The signal that process operational order is corresponding: signal processing unit Received signal strength also processes, and sends treated signal to information output unit.
Feedback operation information: information output unit Received signal strength and the feedback information corresponding to mode of operation.
Particularly, the Acquire and process process of the music information of described step (2) can comprise the following steps:
Gather music information: the music harvester in information process unit gathers music information, music information is converted to signal, is sent to signal processing unit.
The signal that process music information is corresponding: signal processing unit receives the signal that music harvester sends, by processing this signal, this music information is converted to standard music score, and this standard music score is stored in signal processing unit according to playing sequential packet with the form of program coding; Using the comparison reference of program coding corresponding for first group of standard music score as user's button.
Particularly, the On The Cycle Working Process of described step (3) can comprise the following steps:
Information Monitoring: user plays keyboard instrument, information acquisition unit gathers spatial coordinated information and/or the pressure information of human body when user plays keyboard instrument, and this information is input to signal processing unit with aspect.
If user sends space vector and/or phonetic order in this cyclic process, information acquisition unit can gather this instruction equally, and with aspect to signal processing unit, and turn back in the setting steps of step (1).
Signal transacting: signal processing unit receives the signal that information acquisition unit sends, and processes, analyze and then draw the fingering that user is current further and this fingering is stored in signal processing unit in the mode of program coding this signal; Switch the comparison reference of program coding corresponding to next group standard music score as next group button of user; Then from program coding, obtain current standard music score, actual key information current for user and current standard music score are compared, make real-time evaluation in conjunction with the evaluation system being stored in signal processing unit inside, send corresponding evaluation information to information output unit.
If after user has played current title, the program coding that namely the standard music score of reference is corresponding as a comparison has been switched to latter end.Program coding corresponding with the play fingering of the user's current title being stored in signal processing unit for program coding corresponding for current title standard music score is compared, make the complete evaluation of user being played to current title in conjunction with the evaluation system being stored in signal processing unit inside, send corresponding evaluation information to information output unit.
Feedback information: the signal that information output unit Received signal strength processing unit sends, and be converted into corresponding information and export.
Above-mentioned three steps circulate successively and perform thus the function of realization evaluation fingering.
Embodiment 2
For with finger piano, by the mode identification fingering of image with receive operational order, audibly receive operational order, with the picture of publishing picture that projects, sound, mode finger being applied to pressure carries out teaching, can use following scheme:
The block diagram of system of the present invention as shown in Figure 8.
Keyboard instrument teaching system of the present invention comprises information acquisition unit, signal processing unit and information output unit.
Information acquisition unit comprises music harvester and image collecting device.
Information output unit is projection arrangement, human body servicing unit, and wherein the message output module of human body servicing unit comprises sound generator and pressure generator.
Described information acquisition unit gathers the spatial coordinated information of music information, human body, and described information output unit exports visual information, the acoustic information of prompting and the pressure information of prompting of pointing out.
During system works projection arrangement directly by the image projection of operation interface on wall, time user needs selection or the switching carrying out mode of operation, can directly at the enterprising line operate of the operation interface projected, transmit operation instruction, to system, realizes selection or the switching of mode of operation.
With regard to the optimum fingering of described prompting, system of the present invention can realize following effect:
User is in the process of shoegaze, and system is pointed out according to song that user plays, and is specially: the optimum fingering information of display reminding on the image that projection device goes out; Human body servicing unit applies pressure to finger and hinders user to press directly to point out user with what fingering button with pointing out inconsistent button and sound.System identifies the play fingering of user simultaneously, judge whether with point out consistent, and according to the corresponding information of judgement prompting on the image projected, and prompting of sounding.
With regard to described correction fingering pattern, system of the present invention can realize following effect:
User is in the process of shoegaze, the play fingering of the other user of knowledge system, and this fingering and song that user plays being compared, judges whether to play wrong, and according to the corresponding information of judgement prompting on the image projected, and prompting of sounding.
With regard to described evaluation fingering pattern, system of the present invention can realize following effect:
User is in the process of shoegaze, and the play fingering of system identification user, compares this fingering and song that user plays, and makes real-time evaluation, by the information of evaluation to the image projected and prompting of sounding.After user's current title is played, system makes total evaluation, by the information of evaluation on the image projected, and prompting of sounding.
If time user needs the switching carrying out mode of operation, can directly at the enterprising line operate of the image projected, transmit operation instruction, to system, realizes the switching of mode of operation.
Embodiment 3
For with finger piano, by the mode identification fingering of image with receive operational order, with the picture of publishing picture that projects, sound, mode finger being applied to pressure carries out teaching, can use following scheme:
The block diagram of system of the present invention as shown in Figure 9.
System comprises information acquisition unit, signal processing unit and information output unit.
Information acquisition unit comprises music harvester, image collecting device and human body servicing unit.Wherein the information acquisition module of human body servicing unit comprises sound transducer and pressure transducer.
Information output unit is projection arrangement, human body servicing unit.Wherein the message output module of human body servicing unit comprises sound generator and pressure generator.
Now information acquisition unit can collect music information, the spatial coordinated information of human body, acoustic information, pressure information.Information output unit exports visual information, the acoustic information of prompting and the pressure information of prompting of prompting.
During system works projection arrangement directly by the image projection of operation interface on wall, time user needs selection or the switching carrying out mode of operation, can directly at the enterprising line operate of the operation interface projected, transmit operation instruction, to system, realizes selection or the switching of mode of operation.Also selection or the switching of mode of operation can be carried out by direct control system of sounding.
With regard to the optimum fingering of described prompting, system of the present invention can realize following effect:
User is in the process of shoegaze, and system is pointed out according to song that user plays, and is specially: the optimum fingering information of display reminding on the image that projection device goes out; Human body servicing unit applies pressure to finger and hinders user to press directly to point out user with what fingering button with pointing out inconsistent button and sound.System identifies the play fingering of user simultaneously, judge whether with point out consistent, and according to the corresponding information of judgement prompting on the image projected, and prompting of sounding.
The method of the play fingering of described identification user is: the planimetric coordinates information (x, y) directly drawing finger presses based on the plane space coordinate information of human body; The force value F of finger presses is directly drawn based on the pressure information collected.
With regard to described correction fingering pattern, system of the present invention can realize following effect:
User is in the process of shoegaze, the play fingering of the other user of knowledge system, and this fingering and song that user plays being compared, judges whether to play wrong, and according to the corresponding information of judgement prompting on the image projected, and prompting of sounding.
Above-mentioned mode of operation is only not used in for illustration of the present invention and limits the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Claims (9)
1. a keyboard instrument teaching system, is characterized in that: described system comprises information acquisition unit, signal processing unit and information output unit, wherein:
The information collected for gathering external information, and is sent to signal processing unit with aspect by described information acquisition unit;
Described external information comprises music information, the spatial coordinated information of human body;
The spatial coordinated information of described human body is the volume coordinate of human body, and described volume coordinate is three-dimensional spatial coordinate (x, y, z);
The signal that described signal processing unit sends for receiving information acquisition unit, and process, the signal after process is sent to signal output unit;
Described information output unit is used for the signal that Received signal strength processing unit sends, and signal is converted to corresponding information;
Described information comprises visual information, pressure information, acoustic information;
Described system has multiple-working mode, and described mode of operation comprises the optimum fingering pattern of prompting, revises fingering pattern, evaluation model;
In described multiple-working mode, signal processing unit receives the signal that information acquisition unit sends, and processes, analyze and then draw the fingering that user is current further to this signal;
Described fingering is determined by two physical quantitys, and one is the position (x, y) of finger presses, and another is the dynamics force value F of finger presses;
Described force value F draws mode: with the spatial coordinated information (x of human body, y, z) based on the height coordinate z in physical quantity, the acquisition time interval of delta t of combining information collecting unit calculates, first order derivative on time t or pluriderivative are done to coordinate figure, and according to above-mentioned coordinate figure, and the quality m of first order derivative or pluriderivative and musical instrument key calculates the force value F of human body.
2. keyboard instrument teaching system according to claim 1, is characterized in that: described information acquisition unit comprises music harvester, also comprises image collecting device.
3. keyboard instrument teaching system according to claim 2, is characterized in that: described information output unit is projection arrangement or projection arrangement and human body servicing unit.
4. keyboard instrument teaching system according to claim 1, is characterized in that: described keyboard instrument be have stationary arrangement order key and each key has the musical instrument of fixing pitch, comprise piano, pipe organ, accordion or mellotron.
5. keyboard instrument teaching system according to claim 2, it is characterized in that: described music harvester to gather music information, the music information collected is converted to signal, and this signal being sent to the device of signal processing unit, described music harvester is desktop computer or the mobile intelligent terminal with camera function, sound-recording function, scan function and communication function.
6. keyboard instrument teaching system according to claim 2, it is characterized in that: described image collecting device is used for human body image information to be converted to signal, and being sent to signal processing unit, described image collecting device is desktop computer or the mobile intelligent terminal with image collecting function.
7. keyboard instrument teaching system according to claim 3, it is characterized in that: described projection arrangement is a kind of a kind of device that can convert electrical signals to the visual information projected, described projection arrangement is selected from laser, DLP projector, has desktop computer or the mobile intelligent terminal of projecting function.
8. the keyboard instrument teaching system according to any one of claim 5-7, it is characterized in that: described mobile intelligent terminal is for can catch external information, can carry out calculating, treatment and analysis, and the portable set of information transmission can be carried out between different terminals.
9. a teaching method for keyboard instrument teaching system described in claim 3, is characterized in that comprising the following steps:
(1) Information Monitoring: the spatial coordinated information of image acquisition device human body, is input to signal processing unit by this information with aspect; Music harvester gathers music information, the music information collected is converted to signal, and this signal is sent to signal processing unit; The spatial coordinated information of described human body is the volume coordinate of human body, and described volume coordinate is three-dimensional spatial coordinate (x, y, z);
(2) signal transacting: signal processing unit receives the signal sent from image collecting device and music harvester, processes this signal, and the signal after process is sent to human body servicing unit and projection arrangement;
(3) feedback information: the signal that human body servicing unit Received signal strength processing unit sends also is converted into acoustic information, pressure information; The signal that projection arrangement Received signal strength processing unit sends also is converted into visual information.
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