CN111223355A - Musical instrument fingering correction device, system and method and musical instrument - Google Patents
Musical instrument fingering correction device, system and method and musical instrument Download PDFInfo
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- CN111223355A CN111223355A CN202010045833.5A CN202010045833A CN111223355A CN 111223355 A CN111223355 A CN 111223355A CN 202010045833 A CN202010045833 A CN 202010045833A CN 111223355 A CN111223355 A CN 111223355A
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Abstract
The invention discloses a fingering correcting device, a fingering correcting system, a fingering correcting method and a musical instrument, wherein the device comprises an LED lamp group, a voice module and a control module; the LED lamp bank comprises a plurality of LEDs, the LEDs correspond to keys of the musical instrument, and a user bounces down the corresponding keys according to the lighted LEDs; the voice module is used for collecting the sound of the currently pressed key, collecting the beat duration of the current note and judging whether the current note is matched with the sound of the currently pressed key; if the current musical note is matched with the sound of the currently pressed key, the control module calculates and obtains playing speed according to the beat duration of the musical note; the voice module acquires the playing speed and judges whether the playing speed is within an error range, and if the playing speed exceeds the error range, the control module controls the LED lamp set to keep displaying the position of the current note. The invention improves the efficiency of musical instrument practice.
Description
Technical Field
The invention relates to the technical field of musical instrument learning, in particular to a device, a system and a method for correcting fingering of a musical instrument and the musical instrument.
Background
In the process of learning musical instruments, music score knowledge is boring to learn and can cause trouble to users, and in the process of practicing musical instruments, the input time and the labor are wasted due to the fact that the musical instruments need to be trained, so that the music score learning and the music score backing become headache. Wherein, the basic practice for practicing the musical instrument is fingering practice, and fingering errors can affect the efficiency of musical instrument practice.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a fingering correction device, system, method and musical instrument for improving the efficiency of musical instrument practice.
The technical scheme of the invention is as follows:
a fingering correcting device for musical instruments comprises an LED lamp group, a voice module and a control module;
the LED lamp bank comprises a plurality of LEDs, the LEDs correspond to keys of the musical instrument, and a user bounces down the corresponding keys according to the lighted LEDs;
the voice module is used for collecting the sound of the currently pressed key, collecting the beat duration of the current note and judging whether the current note is matched with the sound of the currently pressed key;
if the current musical note is matched with the sound of the currently pressed key, the control module calculates and obtains playing speed according to the beat duration of the musical note; the voice module acquires the playing speed and judges whether the playing speed is within an error range, and if the playing speed exceeds the error range, the control module controls the LED lamp set to keep displaying the position of the current note.
According to the further arrangement of the invention, the LEDs are arranged in an array, each row of LEDs is arranged corresponding to the key, and the LEDs corresponding to the key of the note are correspondingly lightened according to the rhythm of the music and the sequence of the note.
According to the further arrangement of the invention, the control module sets the time length for lighting the LED according to the beat time length of the note.
According to the further arrangement of the invention, the LED lamp bank has an automatic dimming mode and a manual dimming mode, when the voice module detects that the current note is not matched with the sound of the currently pressed key or detects that the current playing speed is not within an error range, the LED lamp bank keeps the position display of the current beat note, and the brightness of the LED corresponding to the current note is increased through the automatic dimming mode or the manual dimming mode of the LED lamp bank.
According to a further arrangement of the present invention, the voice module includes a voice acquisition unit and a voice processing unit;
the acquisition unit is used for acquiring the sound of the currently pressed key and acquiring the beat duration of the current note;
the voice processing unit is used for identifying whether the collected key sound conforms to the sound of the corresponding key of the current note;
wherein the voice processing unit stores correct key audio in advance.
A fingering correcting system for musical instruments comprises a mobile terminal and a fingering correcting device for musical instruments; the device for correcting the fingering of the musical instrument further comprises a Bluetooth module, and the mobile terminal is connected with the device for correcting the fingering of the musical instrument in a Bluetooth mode to control the device for correcting the fingering of the musical instrument.
A musical instrument fingering correction method applied to the musical instrument fingering correction device comprises the following steps:
collecting the sound of the currently pressed key and the beat duration of the current note through the voice module, and judging whether the current note is matched with the sound of the currently pressed key;
if the current note is matched with the sound of the currently pressed key, the control module calculates and obtains playing speed according to the beat duration;
the voice module judges whether the playing speed is within an error range; and if the error range is exceeded, the control module controls the LED lamp group to keep displaying the position of the current note.
In a further aspect of the present invention, the step of determining whether the current note matches the sound of the currently pressed key further includes:
and if the current musical note is not matched with the sound of the currently pressed key, the control module controls the LED lamp group to keep displaying the position of the current musical note.
Further, the step of determining whether the current note matches the sound of the currently depressed key may further include:
the correct key audio is stored in the voice module in advance.
A musical instrument includes an instrument body and the fingering correcting device.
The invention provides a device, a system and a method for correcting fingering of a musical instrument and the musical instrument, wherein the device comprises an LED lamp set, a voice module and a control module; the LED lamp bank comprises a plurality of LEDs, the LEDs correspond to keys of the musical instrument, and a user bounces down the corresponding keys according to the lighted LEDs; the voice module is used for collecting the sound of the currently pressed key, collecting the beat duration of the current note and judging whether the current note is matched with the sound of the currently pressed key; if the current musical note is matched with the sound of the currently pressed key, the control module calculates and obtains playing speed according to the beat duration of the musical note; the voice module acquires the playing speed and judges whether the playing speed is within an error range, and if the playing speed exceeds the error range, the control module controls the LED lamp set to keep displaying the position of the current note. The invention improves the efficiency of musical instrument practice.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of the fingering correction device of the musical instrument according to the present invention.
Fig. 2 is a schematic diagram of a first beat of an instrument in the present invention.
Fig. 3 is a schematic diagram of a second beat of an instrument in the present invention.
FIG. 4 is a schematic diagram of the fingering correction system of the musical instrument according to the present invention.
Fig. 5 is a schematic diagram of a mobile terminal wechat applet song selection interface in the present invention.
Fig. 6 is a schematic view of an operation interface of the mobile terminal wechat applet in the present invention.
Fig. 7 is a schematic diagram of a correction reminding window after a mobile terminal wechat applet is popped up mistakenly.
Fig. 8 is a schematic diagram of a mobile terminal wechat applet selecting a dimming mode window in accordance with the present invention.
FIG. 9 is a schematic diagram of a mobile terminal wechat applet music platform in the invention.
FIG. 10 is a flow chart of a method for correcting fingering of an instrument according to the present invention.
Detailed Description
The inventor finds that the trouble of learning music score knowledge is always experienced in the process of learning musical instruments (pianos, organs, accordion and electronic organs), the learning of music scores and the learning of music scores are both troublesome in the process of practicing the musical instruments, the investment time for practicing the musical instruments is long, the labor is wasted, if one product can solve the problems, people can play the musical instruments without learning and without the need of music scores, and therefore the interest of people in the musical instruments is greatly improved.
The invention provides a fingering correcting device, a fingering correcting system, a fingering correcting method and a musical instrument, wherein the device can improve the interestingness of practicing the musical instrument, save the practicing time of people, recognize the playing effect of people, judge the right and wrong playing in real time, has a correcting and reminding function, helps people to quickly master the correct fingering of playing the musical instrument, achieves the effect of twice the result with half the effort, and has great commercial value. In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiments and claims, the terms "a" and "an" can mean "one or more" unless the article is specifically limited.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a preferred embodiment of a fingering correction device for a musical instrument.
As shown in fig. 1 and 2, a fingering correction device 100 for a musical instrument 10, the musical instrument 10 includes a musical instrument body 20 and keys 30 disposed on the musical instrument body, and the fingering correction device 100 includes a LED light group 102, a voice module 103, a control module 101, a bluetooth module 104 and a power module 105. Wherein, the LED light set 102 includes a plurality of LEDs 1023, the LEDs 1023 correspond to the keys 30 of the musical instrument 10, and the user pops down the corresponding keys 30 according to the lit LEDs 2023. The voice module 103 is configured to collect the sound of the currently pressed key 30 and the beat duration of the current note, and determine whether the current note is matched with the sound of the currently pressed key 30. If the current note is matched with the sound of the currently pressed key 30, the control module 101 calculates and obtains the playing speed according to the beat duration of the note; the voice module 103 obtains the playing speed and judges whether the playing speed is within an error range, if the playing speed exceeds the error range, the control module 101 controls the LED lamp set to keep displaying the position of the current note, and the LED lamp set 102 continues to display the current note downwards until the voice module 103 recognizes a correct organ sound and a correct beat duration. Therefore, the invention enables the user to know the correct and wrong playing in real time, and timely correct the wrong playing, and the LED lamp set 102 has the visual reminding function, so that the playing and practicing effects can be improved, and the musical instrument practicing efficiency is improved. In addition, the bluetooth module 104 of the present invention may be connected to an intelligent terminal to transmit data, so that the musical instrument fingering correction apparatus 100 may be controlled by the intelligent terminal. It should be noted that the instrument fingering correction device 100 exists independently of the instrument 10, so that power can be supplied to the device through the power module 105.
Referring to fig. 2, in a further implementation manner of an embodiment, the LEDs 1023 are arranged in an array, and each row of LEDs is arranged corresponding to the keys 30, and the LEDs 1023 corresponding to the note keys 30 are correspondingly lighted according to the rhythm of the music and the sequence of the notes.
Specifically, the LED lamp set 102 further includes an LED driving chip 1021, a photo resistor 1022, and a plurality of LED arrays, in one implementation, the LED arrays are arranged in 17 × 4. The position of each row of the LED matrix corresponds to the keys 30 of the musical instrument 10, and the LED1023 plays a role of the cue key 30, and accordingly lights the LED1023 corresponding to the note key 30 according to the rhythm of the music and the sequence of the notes. Wherein, the LED1023 corresponding to the note button 30 which can be played or ready to be played is lighted up according to the rhythm of the music and the sequence of the notes.
Referring to fig. 2, the prompt function of the LED light set is specifically described in the following with an embodiment.
As shown in fig. 2, the LED indicator light in the first row is the note indicator light of the current tempo, the second beat note indicator light in the second row, the LED indicator light in the third row and the LED indicator light in the fourth row indicate the same content, and so on. In specific implementation, the LEDs in the first row are all green to indicate that playing can be performed, and the LEDs in the second row, the LEDs in the third row and the LEDs in the fourth row are all yellow to indicate that playing is ready. What the user needs to play is the key that the green LED of the first row lights up, while keeping track of the position of the yellow LED in advance in preparation for playing the next note. It should be noted that the first row of LEDs refers to the bottom row of the LED lamp group 102, and the second row of LEDs, the third row of LEDs, and the fourth row of LEDs are arranged in sequence from top to bottom.
Example of playing songs: playing song "little star", after beginning to play, LED1023 lights up in order, the first several beats are 1(do),1(do),5(sol),5(sol),6(la),6(la),5(sol), so the first four beats 1(do),1(do),5(sol),5(sol), the first row of LEDs lights up the 9 th (ordered from left to right) green LED, the corresponding is the key 1(do) on the musical instrument 10, the second row of LEDs lights up the 9 th yellow LED, the corresponding is the key 1(do) on the musical instrument 10, the third row of LEDs lights up the 11 th yellow LED, the corresponding is the key 5(do) on the musical instrument 10, the fourth row of LEDs lights up the 11 th yellow LED, the corresponding is the key 5(do) on the musical instrument 10. As shown in fig. 3, when the correct playing of the beat is finished, the display of the next beat is displayed, and the content indicated by the LEDs can be pushed as described above, which indicates 1(do),5(sol),5(sol), and 6 (la).
In a further implementation manner of an embodiment, the control module 101 sets the time length for which the LED is turned on according to the beat time length of the note. Specifically, the control module 101 strictly sets the lighting duration of the LEDs at regular time according to the beat of the musical note, and the user can easily play a complete music according to the corresponding keys of the lighted LEDs, and the prompt with multiple rows of LEDs makes the finger react for more time, makes the brain memorize more time, and is more beneficial to improving the playing effect.
Specifically, the control module 101 is a stm32F1 main control chip, which can precisely control the timing to reach the microsecond level, and can strictly time the LEDs to light up according to the beat duration. The music is generally in the speed of 60 to 120bpm, that is, the beats per minute is 60 to 120 beats, and about 80 beats is the most common. The present invention sets the brightness of 120bpm as the basis, i.e. 120 beats per minute, one beat in 0.5 second, and the LED light-up time is 0.5 second. When the rhythm required by the music is different, the lighting time of the LED is proportionally calculated according to the beat requirement of the music. The lighting time is not the time of the key when the user plays the music, but the time of the sound of the music after the music note is played, for example, the beat is 1 second, and after the user correctly plays the key, the sound of the music is continued for one second, and then the music note of the next beat is continuously played.
The invention also has the real-time correction reminding function for the playing tempo of the user. The playing speed of the user can be collected and processed by the voice module 103, the playing speed of the user is calculated through a beat duration algorithm, if the beat of the user is wrong, too fast playing or too slow playing occurs, and the playing speed is not within the error range of the algorithm result, a beat correction reminding function can be triggered, the control module 101 can lock the LED lamp set 102, the display position of the LED lamp set 102 cannot be changed, and the position display of the current beat note is always kept. And the LED lamp bank can suddenly increase certain brightness, so that a user can intuitively know the beat of the user who plays the music in error and needs to correct the music in time.
Specific examples of setting the lighting time duration of the LED lamp set 102 are that when the music rhythm is 60bpm, the corresponding LED1023 lighting time duration of a note of one beat is 1 second, which is 2 times of the basic time duration (120 bpm); when the music rhythm is 80bpm, the LED lighting time is 0.75 seconds which is 1.5 times of the basic time (120bpm), and so on. Referring to fig. 2, when the tempo of the user playing is incorrect, the note tempo represented by the first row in fig. 2 should be 120bpm, the duration is 0.5s, and if the time for the user playing is 1s, the beat duration misplay correction reminder is triggered, and the user can observe that the LED light group automatically increases a certain brightness, and then the note of the current tempo needs to be played again. As shown in fig. 3, when the duration of the current beat played by the user is correct, the correction reminding function is released, the brightness of the LED1023 is restored to the state before enhancement, and the LED lamp set 102 displays the next beat.
In a further implementation manner of an embodiment, the LED lamp set 102 has an automatic dimming mode and a manual dimming mode, and when the voice module 103 detects that the current note does not match the sound of the currently pressed key or detects that the current playing speed is not within an error range, the LED lamp set keeps the position display of the current beat note, and increases the brightness of the LED corresponding to the current note through the automatic dimming mode or the manual dimming mode of the LED lamp set.
In the prior art, the brightness of the LED is not controllable, however, in actual use, due to scene change or light change, the single LED brightness is not suitable for users to use. Sometimes, the light is too bright, and the brightness of the LED is relatively too low, so that the LED is difficult to distinguish and analyze clearly; when the light is too dark, the LED is too bright, and the use experience is very dazzling. In addition, everyone has different sensitivity to light, and the adult uses the light with higher brightness, while the child uses the light with not too high brightness, which may hurt eyes.
Therefore, the invention provides an innovative method for controlling the brightness of the LED lamp set, and by adopting the novel high-brightness LED lamp, the LED lamp set 102 has two modes of adjusting the brightness of the LED, namely an automatic dimming mode and a manual dimming mode. It is explained here that in both modes, there is a function of automatic brightness enhancement of the LED in the error correction reminding mechanism. This function is also visually, giving the user a more obvious reminder. The automatic enhancement function is to continuously increase certain brightness based on the brightness of the current LED, play a role in prompting without hurting eyes, and enable a user to realize playing errors to correct in real time.
In a specific implementation manner of an embodiment, the voice module 103 includes a voice acquisition unit and a voice processing unit. The collecting unit is used for collecting the sound of currently pressed keys and collecting the beat duration of current notes, and the voice processing unit is used for identifying whether the collected sound of the keys accords with the current notes or not and judging the sound of the corresponding keys. Wherein the voice processing unit stores correct key audio in advance.
Specifically, the acquisition unit comprises a voice collector, and the voice processing unit is a voice processing chip. The voice module 103 is the core of the real-time feedback mechanism for user playing, and the function of the module is to collect the key sounds of the user playing in real time, and then calculate the data of the collected voice through the voice processing chip, and then judge whether the voice accords with the sounds of the keys to be played through a special voice recognition algorithm (prior art).
Wherein, the correct key audio can be recorded in advance and stored in the voice processing chip for the voice module 103 to judge and compare. The collected voice data are judged to belong to the keys 30 through a key classification algorithm, then the keys 30 with the correct tempo are compared, if the two keys are inconsistent, a real-time correction function is triggered, the display position of the LED lamp set 102 cannot be changed, and the position display of the current beat of notes is kept all the time. And the LED lamp set 102 will suddenly increase a certain brightness, so that the user can more intuitively know that the user has flicked the mistake and needs to correct the mistake in time.
Meanwhile, after the voice module 103 collects the piano tones, the voice module processes a section of audio data, identifies the time point of the change of the piano tones, compares the required duration of the current beat with the required duration of the current beat through time calculation processing, determines whether the required duration is within an error range, and triggers a correction reminding function if the playing duration of the user is out of the error range, similar to the correction reminding of the playing key error. Until the user plays the playing key, the voice module can recognize the correct piano sound and the correct beat duration, the LED lamp set continues to be displayed downwards, and the brightness of the LED lamp set 102 returns to the proper value again. Through the feedback mechanism, the user can obtain more standard guidance in the playing process to form more stable muscle memory.
The device presents the situation: as illustrated by the specific example above, referring to fig. 2, when the LED light set 102 presents fig. 2, it indicates that the user needs to correctly play the 9 th key 1(do) of the musical instrument, if the mistake is recorded and identified by the voice module 103, and then the mistake is fed back to the control module 101 to lock the LED light set 102, the LED light set 102 will not be changed, and remains as shown in fig. 2. When the user plays correctly again, the voice module 103 determines that the correct audio frequency is met, as shown in fig. 3, the locked LED lamp set 102 is released after the current beat is played, and the LED lamp set 102 continues to display the prompt of the next beat.
In one embodiment, the instrument fingering correction device 100 of the present invention has two power supply modes. One is to use the tall and erect line power supply, and power interface is microUSB interface, supplies power for this device. And the second battery supplies power to the lithium battery, wherein the battery is a 3.7V lithium battery, the voltage is increased to 5V through the boosting module, and then the voltage is reduced to 3.3V to supply power to the main control chip. Through adopting the lithium cell power supply for the time spent does not need the power connection line at ordinary times, is fairly portable when being hand-held type. The available ann of user is tall and erect line and is charged and make this device have the function of charging. The device is provided with two LED indicating lamps for prompting that the battery is charged or fully charged, and when the battery is lower than a certain value, the device can automatically give an alarm for prompting that the battery is out of charge, so as to remind a user of charging. In addition, the power management module is also provided with a protection circuit for preventing reverse connection, overcharge, overdischarge and short circuit of the battery so as to prevent the lithium battery from being damaged and reduce the damage of the equipment caused by misoperation of a user.
Referring to fig. 4, the present invention further provides a fingering correction system for musical instruments, which includes a mobile terminal 200 and the fingering correction device 100; wherein the mobile terminal 200 is bluetooth-connected with the musical instrument fingering correction device 100 to control the musical instrument fingering correction device 100. The mobile terminal 200 may be an intelligent terminal such as a mobile phone client, a tablet computer, and the like. The following is a detailed description of the bluetooth connection between the mobile phone client and the fingering correction device.
Referring to fig. 5 to 9, in an implementation manner, the visual interface of the mobile phone client is based on a wechat applet. The user can use the WeChat of oneself to open the applet, selects bluetooth to connect to our musical instrument fingering and corrects the device and just can accomplish the control to the device, and the applet is the visual interface that the error correction was reminded simultaneously.
Specifically, the user may select a preferred music in a select music interface of the mobile applet. After the song is selected, operation buttons such as start playing, pause and the like appear when the corresponding playing operation interface is entered. The user can select to click to play or pause, and also can select to start playing from a certain place in the music, so that the method is very flexible. The user may choose to start playing from the beginning or may choose a certain segment of the music track to enhance the exercise. During the music practice, the correction reminding function of the applet automatically runs in the background, waiting for triggering. If the user plays the mistake, the device sends a mistake feedback instruction to the mobile phone applet through the Bluetooth module, the widget interface can show the window (including LED lamp bank simulation display picture and mistake reminding characters) that the mistake was corrected, the display of the simulation LED lamp bank of visual interface is consistent with the display of equipment, but the position of a red light is increased, for example, the 7 th LED that counts from left to right in the first line LED plays the mistake, then the LED can light the red light, so as to be used for instructing the user to play the wrong key, the user contrasts the position of wrong key and correct key, the user learns oneself and plays the mistake and corrects with this. When the device identifies the correct playing organ sound, a correct instruction is sent, the correction reminding window of the visual interface disappears, and the user can continue playing downwards.
Further, a dimming mode button is arranged on an interface of the small program, and two modes of automatic dimming and manual dimming of the LED lamp set can be selected on the mobile phone client. Wherein, the automatic dimming mode: after the automatic dimming mode is selected on the mobile phone client, the main control chip of the device reads the resistance value of the photosensitive resistor through an ADC (analog/digital converter), the resistance value changes along with the influence of the light intensity, and after the chip reads the numerical value, the chip processes data to calculate the optimal PWM (pulse width modulation) output so as to control the LED to achieve the most suitable brightness of naked eyes, thereby realizing automatic dimming. Manual dimming mode: when the automatic dimming is not suitable for the requirements of a user, a manual dimming mode can be selected at a mobile phone client, a button for adjusting the brightness can appear on a visual interface, the brightness of the user is improved or reduced according to the use habit of the user, and the principle is to send a corresponding instruction to equipment through Bluetooth, so that the PWM (pulse width modulation) output is changed, and the LED is controlled to achieve the self-adaptive brightness of the user.
In specific implementation, a user clicks a window for entering a selection mode, and can click an automatic dimming button to enter an automatic dimming mode. Of course, a manual dimming button may be clicked, and the interface may present buttons for increasing and decreasing brightness for the user to operate.
Furthermore, a music platform is arranged on the small program on the mobile phone client. Because the traditional technology does not increase the function of music, when the product is formed, only the programmed music data can be fixedly burnt, and the music with limited quantity can hardly meet the pursuit of a user for the practice of new music. The invention can continuously update and release newly-edited music by setting a music platform on the mobile phone applet, and users can practice by finding the released music in the music library according to own preference. The user can also release own original works to the platform, and other users can obtain the original works free of charge or obtain the original works paid for, so that the creation enthusiasm of the user is stimulated, and more high-quality music is stimulated to emerge. On a music platform, the music which is updated day by day has greater attraction to users, and the users can have more and wider music choices, thereby greatly increasing the playing fun.
In a further implementation manner of one embodiment, the bluetooth module is a data transmission module between the instrument fingering correction device and the mobile phone client, and the user can achieve real-time control over the equipment through mobile phone bluetooth. The user can select the music on the mobile phone client, the data packet of the music can be transmitted to the equipment through the Bluetooth after confirmation, and the data can be transmitted to the LED lamp bank after being processed by the equipment main control chip, so that the lighting sequence of the LEDs is controlled, and the user can follow the bullets according to the prompt of the LEDs. In addition, the Bluetooth module is responsible for information transmission in a feedback mechanism, and when a bullet error correction signal of the equipment main control chip is received, the Bluetooth module sends bullet error information to the mobile phone client.
Referring to fig. 10, the present invention further provides a method for correcting fingering of a musical instrument, which is applied to the device for correcting fingering of a musical instrument, and comprises the following steps:
s100, collecting the sound of a currently pressed key and the beat duration of a current note through the voice module, and judging whether the current note is matched with the sound of the currently pressed key;
s200, if the current note is matched with the sound of the currently pressed key, the control module calculates and obtains playing speed according to the beat duration;
s300, the voice module judges whether the playing speed is within an error range; and if the error range is exceeded, the control module controls the LED lamp group to keep displaying the position of the current note.
The step of judging whether the current note is matched with the sound of the currently pressed key further comprises:
s101, if the current note is not matched with the sound of the currently pressed key, the control module controls the LED lamp group to keep displaying the position of the current note.
The step further includes, before the step of judging whether the current note matches the sound of the currently depressed key:
s102, storing correct key audios into the voice module in advance.
The invention also provides an instrument or a musical instrument, which comprises an instrument body and the instrument fingering correcting device. As described above, the details are not repeated herein.
In summary, the device, the system, the method and the musical instrument for fingering correction of the musical instrument provided by the invention comprise an LED lamp set, a voice module and a control module; the LED lamp bank comprises a plurality of LEDs, the LEDs correspond to keys of the musical instrument, and a user bounces down the corresponding keys according to the lighted LEDs; the voice module is used for collecting the sound of the currently pressed key, collecting the beat duration of the current note and judging whether the current note is matched with the sound of the currently pressed key; if the current musical note is matched with the sound of the currently pressed key, the control module calculates and obtains playing speed according to the beat duration of the musical note; the voice module acquires the playing speed and judges whether the playing speed is within an error range, and if the playing speed exceeds the error range, the control module controls the LED lamp set to keep displaying the position of the current note. The LED lamp set can enable the prompt function to be more sufficient, the brightness of the LED is more appropriate, and the LED lamp set is independent of the existence of musical instruments, small and convenient. The voice module feedback mechanism enables a user to know the correct and wrong playing of the user in real time, such as error real-time correction, LED lamp group visual reminding and small program interface reminding, and the playing exercise effect is improved. The equipment is designed with a power management module, so that the service life of the equipment is prolonged. The mobile phone client is controlled by the WeChat small program, so that the method is simple and convenient, and the selectable music is richer.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A fingering correcting device for musical instruments is characterized by comprising an LED lamp group, a voice module and a control module;
the LED lamp bank comprises a plurality of LEDs, the LEDs correspond to keys of the musical instrument, and a user bounces down the corresponding keys according to the lighted LEDs;
the voice module is used for collecting the sound of the currently pressed key, collecting the beat duration of the current note and judging whether the current note is matched with the sound of the currently pressed key;
if the current musical note is matched with the sound of the currently pressed key, the control module calculates and obtains playing speed according to the beat duration of the musical note; the voice module acquires the playing speed and judges whether the playing speed is within an error range, and if the playing speed exceeds the error range, the control module controls the LED lamp set to keep displaying the position of the current note.
2. The device for correcting fingering of musical instrument according to claim 1, wherein the LEDs are arranged in an array, and each row of LEDs is arranged corresponding to a key, and the LEDs corresponding to the keys of the notes are correspondingly lighted up according to the rhythm of the music and the sequence of the notes.
3. The musical instrument fingering correction device according to claim 2, wherein the control module sets a time period for which the LED is turned on according to a beat time period of a note.
4. The musical instrument fingering correcting device according to claim 1, wherein the LED lamp set has an automatic dimming mode and a manual dimming mode, and when the voice module detects that the current note does not match the sound of the currently pressed key or detects that the current playing speed is not within an error range, the LED lamp set maintains the position display of the current beat note and increases the brightness of the LED corresponding to the current note through the automatic dimming mode or the manual dimming mode of the LED lamp set.
5. The musical instrument fingering correction device according to claim 1, wherein the voice module includes a voice acquisition unit and a voice processing unit;
the acquisition unit is used for acquiring the sound of the currently pressed key and acquiring the beat duration of the current note;
the voice processing unit is used for identifying whether the collected key sound conforms to the sound of the key corresponding to the current note;
wherein the voice processing unit stores correct key audio in advance.
6. An instrument fingering correction system comprising a mobile terminal and the instrument fingering correction apparatus of any one of claims 1-5; the device for correcting the fingering of the musical instrument further comprises a Bluetooth module, and the mobile terminal is connected with the device for correcting the fingering of the musical instrument through Bluetooth to control the device for correcting the fingering of the musical instrument.
7. An instrumental fingering correction method applied to the instrumental fingering correction device according to any one of claims 1 to 5, comprising:
acquiring the sound of a currently pressed key and the beat duration of a current note through the voice module, and judging whether the current note is matched with the sound of the currently pressed key;
if the current note is matched with the sound of the currently pressed key, the control module calculates and obtains playing speed according to the beat duration;
the voice module judges whether the playing speed is within an error range; and if the error range is exceeded, the control module controls the LED lamp group to keep displaying the position of the current note.
8. The musical instrument fingering correction method according to claim 7, wherein the step of judging whether the current note matches the sound of the currently depressed key further comprises:
and if the current musical note is not matched with the sound of the currently pressed key, the control module controls the LED lamp group to keep displaying the position of the current musical note.
9. The musical instrument fingering correction method according to claim 7, wherein said step, before said step of judging whether or not the current note matches the sound of the currently depressed key, further comprises:
the correct key audio is stored in the voice module in advance.
10. An instrument comprising an instrument body and an instrument fingering correction device according to any one of claims 1 to 5.
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